ffplay.c

   1 /*
   2  * Copyright (c) 2003 Fabrice Bellard
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 /**
  22  * @file
  23  * simple media player based on the FFmpeg libraries
  24  */
  25
  26 #include "config.h"
  27 #include <inttypes.h>
  28 #include <math.h>
  29 #include <limits.h>
  30 #include <signal.h>
  31 #include <stdint.h>
  32
  33 #include "libavutil/avstring.h"
  34 #include "libavutil/colorspace.h"
  35 #include "libavutil/mathematics.h"
  36 #include "libavutil/pixdesc.h"
  37 #include "libavutil/imgutils.h"
  38 #include "libavutil/dict.h"
  39 #include "libavutil/parseutils.h"
  40 #include "libavutil/samplefmt.h"
  41 #include "libavutil/avassert.h"
  42 #include "libavutil/time.h"
  43 #include "libavformat/avformat.h"
  44 #include "libavdevice/avdevice.h"
  45 #include "libswscale/swscale.h"
  46 #include "libavutil/opt.h"
  47 #include "libavcodec/avfft.h"
  48 #include "libswresample/swresample.h"
  49
  50 #if CONFIG_AVFILTER
  51 # include "libavfilter/avcodec.h"
  52 # include "libavfilter/avfilter.h"
  53 # include "libavfilter/buffersink.h"
  54 # include "libavfilter/buffersrc.h"
  55 #endif
  56
  57 #include <SDL.h>
  58 #include <SDL_thread.h>
  59
  60 #include "cmdutils.h"
  61
  62 #include <assert.h>
  63
  64 const char program_name[] = "ffplay";
  65 const int program_birth_year = 2003;
  66
  67 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
  68 #define MIN_FRAMES 5
  69
  70 /* Minimum SDL audio buffer size, in samples. */
  71 #define SDL_AUDIO_MIN_BUFFER_SIZE 512
  72 /* Calculate actual buffer size keeping in mind not cause too frequent audio callbacks */
  73 #define SDL_AUDIO_MAX_CALLBACKS_PER_SEC 30
  74
  75 /* no AV sync correction is done if below the minimum AV sync threshold */
  76 #define AV_SYNC_THRESHOLD_MIN 0.04
  77 /* AV sync correction is done if above the maximum AV sync threshold */
  78 #define AV_SYNC_THRESHOLD_MAX 0.1
  79 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
  80 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
  81 /* no AV correction is done if too big error */
  82 #define AV_NOSYNC_THRESHOLD 10.0
  83
  84 /* maximum audio speed change to get correct sync */
  85 #define SAMPLE_CORRECTION_PERCENT_MAX 10
  86
  87 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
  88 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
  89 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
  90 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
  91
  92 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
  93 #define AUDIO_DIFF_AVG_NB   20
  94
  95 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
  96 #define REFRESH_RATE 0.01
  97
  98 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
  99 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
 100 #define SAMPLE_ARRAY_SIZE (8 * 65536)
 101
 102 #define CURSOR_HIDE_DELAY 1000000
 103
 104 static int64_t sws_flags = SWS_BICUBIC;
 105
 106 typedef struct MyAVPacketList {
 107     AVPacket pkt;
 108     struct MyAVPacketList *next;
 109     int serial;
 110 } MyAVPacketList;
 111
 112 typedef struct PacketQueue {
 113     MyAVPacketList *first_pkt, *last_pkt;
 114     int nb_packets;
 115     int size;
 116     int abort_request;
 117     int serial;
 118     SDL_mutex *mutex;
 119     SDL_cond *cond;
 120 } PacketQueue;
 121
 122 #define VIDEO_PICTURE_QUEUE_SIZE 3
 123 #define SUBPICTURE_QUEUE_SIZE 16
 124 #define FRAME_QUEUE_SIZE FFMAX(VIDEO_PICTURE_QUEUE_SIZE, SUBPICTURE_QUEUE_SIZE)
 125
 126 typedef struct AudioParams {
 127     int freq;
 128     int channels;
 129     int64_t channel_layout;
 130     enum AVSampleFormat fmt;
 131     int frame_size;
 132     int bytes_per_sec;
 133 } AudioParams;
 134
 135 typedef struct Clock {
 136     double pts;           /* clock base */
 137     double pts_drift;     /* clock base minus time at which we updated the clock */
 138     double last_updated;
 139     double speed;
 140     int serial;           /* clock is based on a packet with this serial */
 141     int paused;
 142     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
 143 } Clock;
 144
 145 /* Common struct for handling all types of decoded data and allocated render buffers. */
 146 typedef struct Frame {
 147     AVFrame *frame;
 148     AVSubtitle sub;
 149     int serial;
 150     double pts;           /* presentation timestamp for the frame */
 151     double duration;      /* estimated duration of the frame */
 152     int64_t pos;          /* byte position of the frame in the input file */
 153     SDL_Overlay *bmp;
 154     int allocated;
 155     int reallocate;
 156     int width;
 157     int height;
 158     AVRational sar;
 159 } Frame;
 160
 161 typedef struct FrameQueue {
 162     Frame queue[FRAME_QUEUE_SIZE];
 163     int rindex;
 164     int windex;
 165     int size;
 166     int max_size;
 167     int keep_last;
 168     int rindex_shown;
 169     SDL_mutex *mutex;
 170     SDL_cond *cond;
 171     PacketQueue *pktq;
 172 } FrameQueue;
 173
 174 enum {
 175     AV_SYNC_AUDIO_MASTER, /* default choice */
 176     AV_SYNC_VIDEO_MASTER,
 177     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
 178 };
 179
 180 typedef struct Decoder {
 181     AVPacket pkt;
 182     AVPacket pkt_temp;
 183     PacketQueue *queue;
 184     AVCodecContext *avctx;
 185     int pkt_serial;
 186     int finished;
 187     int flushed;
 188     int packet_pending;
 189     SDL_cond *empty_queue_cond;
 190     int64_t start_pts;
 191     AVRational start_pts_tb;
 192     int64_t next_pts;
 193     AVRational next_pts_tb;
 194 } Decoder;
 195
 196 typedef struct VideoState {
 197     SDL_Thread *read_tid;
 198     SDL_Thread *video_tid;
 199     AVInputFormat *iformat;
 200     int no_background;
 201     int abort_request;
 202     int force_refresh;
 203     int paused;
 204     int last_paused;
 205     int queue_attachments_req;
 206     int seek_req;
 207     int seek_flags;
 208     int64_t seek_pos;
 209     int64_t seek_rel;
 210     int read_pause_return;
 211     AVFormatContext *ic;
 212     int realtime;
 213
 214     Clock audclk;
 215     Clock vidclk;
 216     Clock extclk;
 217
 218     FrameQueue pictq;
 219     FrameQueue subpq;
 220
 221     Decoder auddec;
 222     Decoder viddec;
 223     Decoder subdec;
 224
 225     int audio_stream;
 226
 227     int av_sync_type;
 228
 229     double audio_clock;
 230     int audio_clock_serial;
 231     double audio_diff_cum; /* used for AV difference average computation */
 232     double audio_diff_avg_coef;
 233     double audio_diff_threshold;
 234     int audio_diff_avg_count;
 235     AVStream *audio_st;
 236     PacketQueue audioq;
 237     int audio_hw_buf_size;
 238     uint8_t silence_buf[SDL_AUDIO_MIN_BUFFER_SIZE];
 239     uint8_t *audio_buf;
 240     uint8_t *audio_buf1;
 241     unsigned int audio_buf_size; /* in bytes */
 242     unsigned int audio_buf1_size;
 243     int audio_buf_index; /* in bytes */
 244     int audio_write_buf_size;
 245     int audio_buf_frames_pending;
 246     int audio_last_serial;
 247     struct AudioParams audio_src;
 248 #if CONFIG_AVFILTER
 249     struct AudioParams audio_filter_src;
 250 #endif
 251     struct AudioParams audio_tgt;
 252     struct SwrContext *swr_ctx;
 253     int frame_drops_early;
 254     int frame_drops_late;
 255     AVFrame *frame;
 256
 257     enum ShowMode {
 258         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
 259     } show_mode;
 260     int16_t sample_array[SAMPLE_ARRAY_SIZE];
 261     int sample_array_index;
 262     int last_i_start;
 263     RDFTContext *rdft;
 264     int rdft_bits;
 265     FFTSample *rdft_data;
 266     int xpos;
 267     double last_vis_time;
 268
 269     SDL_Thread *subtitle_tid;
 270     int subtitle_stream;
 271     AVStream *subtitle_st;
 272     PacketQueue subtitleq;
 273
 274     double frame_timer;
 275     double frame_last_returned_time;
 276     double frame_last_filter_delay;
 277     int video_stream;
 278     AVStream *video_st;
 279     PacketQueue videoq;
 280     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
 281 #if !CONFIG_AVFILTER
 282     struct SwsContext *img_convert_ctx;
 283 #endif
 284     SDL_Rect last_display_rect;
 285
 286     char filename[1024];
 287     int width, height, xleft, ytop;
 288     int step;
 289
 290 #if CONFIG_AVFILTER
 291     int vfilter_idx;
 292     AVFilterContext *in_video_filter;   // the first filter in the video chain
 293     AVFilterContext *out_video_filter;  // the last filter in the video chain
 294     AVFilterContext *in_audio_filter;   // the first filter in the audio chain
 295     AVFilterContext *out_audio_filter;  // the last filter in the audio chain
 296     AVFilterGraph *agraph;              // audio filter graph
 297 #endif
 298
 299     int last_video_stream, last_audio_stream, last_subtitle_stream;
 300
 301     SDL_cond *continue_read_thread;
 302 } VideoState;
 303
 304 /* options specified by the user */
 305 static AVInputFormat *file_iformat;
 306 static const char *input_filename;
 307 static const char *window_title;
 308 static int fs_screen_width;
 309 static int fs_screen_height;
 310 static int default_width  = 640;
 311 static int default_height = 480;
 312 static int screen_width  = 0;
 313 static int screen_height = 0;
 314 static int audio_disable;
 315 static int video_disable;
 316 static int subtitle_disable;
 317 static int wanted_stream[AVMEDIA_TYPE_NB] = {
 318     [AVMEDIA_TYPE_AUDIO]    = -1,
 319     [AVMEDIA_TYPE_VIDEO]    = -1,
 320     [AVMEDIA_TYPE_SUBTITLE] = -1,
 321 };
 322 static int seek_by_bytes = -1;
 323 static int display_disable;
 324 static int show_status = 1;
 325 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
 326 static int64_t start_time = AV_NOPTS_VALUE;
 327 static int64_t duration = AV_NOPTS_VALUE;
 328 static int workaround_bugs = 1;
 329 static int fast = 0;
 330 static int genpts = 0;
 331 static int lowres = 0;
 332 static int decoder_reorder_pts = -1;
 333 static int autoexit;
 334 static int exit_on_keydown;
 335 static int exit_on_mousedown;
 336 static int loop = 1;
 337 static int framedrop = -1;
 338 static int infinite_buffer = -1;
 339 static enum ShowMode show_mode = SHOW_MODE_NONE;
 340 static const char *audio_codec_name;
 341 static const char *subtitle_codec_name;
 342 static const char *video_codec_name;
 343 double rdftspeed = 0.02;
 344 static int64_t cursor_last_shown;
 345 static int cursor_hidden = 0;
 346 #if CONFIG_AVFILTER
 347 static const char **vfilters_list = NULL;
 348 static int nb_vfilters = 0;
 349 static char *afilters = NULL;
 350 #endif
 351 static int autorotate = 1;
 352
 353 /* current context */
 354 static int is_full_screen;
 355 static int64_t audio_callback_time;
 356
 357 static AVPacket flush_pkt;
 358
 359 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
 360 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
 361
 362 static SDL_Surface *screen;
 363
 364 #if CONFIG_AVFILTER
 365 static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
 366 {
 367     GROW_ARRAY(vfilters_list, nb_vfilters);
 368     vfilters_list[nb_vfilters - 1] = arg;
 369     return 0;
 370 }
 371 #endif
 372
 373 static inline
 374 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
 375                    enum AVSampleFormat fmt2, int64_t channel_count2)
 376 {
 377     /* If channel count == 1, planar and non-planar formats are the same */
 378     if (channel_count1 == 1 && channel_count2 == 1)
 379         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
 380     else
 381         return channel_count1 != channel_count2 || fmt1 != fmt2;
 382 }
 383
 384 static inline
 385 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
 386 {
 387     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
 388         return channel_layout;
 389     else
 390         return 0;
 391 }
 392
 393 static void free_picture(Frame *vp);
 394
 395 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
 396 {
 397     MyAVPacketList *pkt1;
 398
 399     if (q->abort_request)
 400        return -1;
 401
 402     pkt1 = av_malloc(sizeof(MyAVPacketList));
 403     if (!pkt1)
 404         return -1;
 405     pkt1->pkt = *pkt;
 406     pkt1->next = NULL;
 407     if (pkt == &flush_pkt)
 408         q->serial++;
 409     pkt1->serial = q->serial;
 410
 411     if (!q->last_pkt)
 412         q->first_pkt = pkt1;
 413     else
 414         q->last_pkt->next = pkt1;
 415     q->last_pkt = pkt1;
 416     q->nb_packets++;
 417     q->size += pkt1->pkt.size + sizeof(*pkt1);
 418     /* XXX: should duplicate packet data in DV case */
 419     SDL_CondSignal(q->cond);
 420     return 0;
 421 }
 422
 423 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
 424 {
 425     int ret;
 426
 427     /* duplicate the packet */
 428     if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
 429         return -1;
 430
 431     SDL_LockMutex(q->mutex);
 432     ret = packet_queue_put_private(q, pkt);
 433     SDL_UnlockMutex(q->mutex);
 434
 435     if (pkt != &flush_pkt && ret < 0)
 436         av_free_packet(pkt);
 437
 438     return ret;
 439 }
 440
 441 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
 442 {
 443     AVPacket pkt1, *pkt = &pkt1;
 444     av_init_packet(pkt);
 445     pkt->data = NULL;
 446     pkt->size = 0;
 447     pkt->stream_index = stream_index;
 448     return packet_queue_put(q, pkt);
 449 }
 450
 451 /* packet queue handling */
 452 static void packet_queue_init(PacketQueue *q)
 453 {
 454     memset(q, 0, sizeof(PacketQueue));
 455     q->mutex = SDL_CreateMutex();
 456     q->cond = SDL_CreateCond();
 457     q->abort_request = 1;
 458 }
 459
 460 static void packet_queue_flush(PacketQueue *q)
 461 {
 462     MyAVPacketList *pkt, *pkt1;
 463
 464     SDL_LockMutex(q->mutex);
 465     for (pkt = q->first_pkt; pkt; pkt = pkt1) {
 466         pkt1 = pkt->next;
 467         av_free_packet(&pkt->pkt);
 468         av_freep(&pkt);
 469     }
 470     q->last_pkt = NULL;
 471     q->first_pkt = NULL;
 472     q->nb_packets = 0;
 473     q->size = 0;
 474     SDL_UnlockMutex(q->mutex);
 475 }
 476
 477 static void packet_queue_destroy(PacketQueue *q)
 478 {
 479     packet_queue_flush(q);
 480     SDL_DestroyMutex(q->mutex);
 481     SDL_DestroyCond(q->cond);
 482 }
 483
 484 static void packet_queue_abort(PacketQueue *q)
 485 {
 486     SDL_LockMutex(q->mutex);
 487
 488     q->abort_request = 1;
 489
 490     SDL_CondSignal(q->cond);
 491
 492     SDL_UnlockMutex(q->mutex);
 493 }
 494
 495 static void packet_queue_start(PacketQueue *q)
 496 {
 497     SDL_LockMutex(q->mutex);
 498     q->abort_request = 0;
 499     packet_queue_put_private(q, &flush_pkt);
 500     SDL_UnlockMutex(q->mutex);
 501 }
 502
 503 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
 504 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
 505 {
 506     MyAVPacketList *pkt1;
 507     int ret;
 508
 509     SDL_LockMutex(q->mutex);
 510
 511     for (;;) {
 512         if (q->abort_request) {
 513             ret = -1;
 514             break;
 515         }
 516
 517         pkt1 = q->first_pkt;
 518         if (pkt1) {
 519             q->first_pkt = pkt1->next;
 520             if (!q->first_pkt)
 521                 q->last_pkt = NULL;
 522             q->nb_packets--;
 523             q->size -= pkt1->pkt.size + sizeof(*pkt1);
 524             *pkt = pkt1->pkt;
 525             if (serial)
 526                 *serial = pkt1->serial;
 527             av_free(pkt1);
 528             ret = 1;
 529             break;
 530         } else if (!block) {
 531             ret = 0;
 532             break;
 533         } else {
 534             SDL_CondWait(q->cond, q->mutex);
 535         }
 536     }
 537     SDL_UnlockMutex(q->mutex);
 538     return ret;
 539 }
 540
 541 static void decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, SDL_cond *empty_queue_cond) {
 542     memset(d, 0, sizeof(Decoder));
 543     d->avctx = avctx;
 544     d->queue = queue;
 545     d->empty_queue_cond = empty_queue_cond;
 546     d->start_pts = AV_NOPTS_VALUE;
 547 }
 548
 549 static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) {
 550     int got_frame = 0;
 551
 552     d->flushed = 0;
 553
 554     do {
 555         int ret = -1;
 556
 557         if (d->queue->abort_request)
 558             return -1;
 559
 560         if (!d->packet_pending || d->queue->serial != d->pkt_serial) {
 561             AVPacket pkt;
 562             do {
 563                 if (d->queue->nb_packets == 0)
 564                     SDL_CondSignal(d->empty_queue_cond);
 565                 if (packet_queue_get(d->queue, &pkt, 1, &d->pkt_serial) < 0)
 566                     return -1;
 567                 if (pkt.data == flush_pkt.data) {
 568                     avcodec_flush_buffers(d->avctx);
 569                     d->finished = 0;
 570                     d->flushed = 1;
 571                     d->next_pts = d->start_pts;
 572                     d->next_pts_tb = d->start_pts_tb;
 573                 }
 574             } while (pkt.data == flush_pkt.data || d->queue->serial != d->pkt_serial);
 575             av_free_packet(&d->pkt);
 576             d->pkt_temp = d->pkt = pkt;
 577             d->packet_pending = 1;
 578         }
 579
 580         switch (d->avctx->codec_type) {
 581             case AVMEDIA_TYPE_VIDEO:
 582                 ret = avcodec_decode_video2(d->avctx, frame, &got_frame, &d->pkt_temp);
 583                 if (got_frame) {
 584                     if (decoder_reorder_pts == -1) {
 585                         frame->pts = av_frame_get_best_effort_timestamp(frame);
 586                     } else if (decoder_reorder_pts) {
 587                         frame->pts = frame->pkt_pts;
 588                     } else {
 589                         frame->pts = frame->pkt_dts;
 590                     }
 591                 }
 592                 break;
 593             case AVMEDIA_TYPE_AUDIO:
 594                 ret = avcodec_decode_audio4(d->avctx, frame, &got_frame, &d->pkt_temp);
 595                 if (got_frame) {
 596                     AVRational tb = (AVRational){1, frame->sample_rate};
 597                     if (frame->pts != AV_NOPTS_VALUE)
 598                         frame->pts = av_rescale_q(frame->pts, d->avctx->time_base, tb);
 599                     else if (frame->pkt_pts != AV_NOPTS_VALUE)
 600                         frame->pts = av_rescale_q(frame->pkt_pts, av_codec_get_pkt_timebase(d->avctx), tb);
 601                     else if (d->next_pts != AV_NOPTS_VALUE)
 602                         frame->pts = av_rescale_q(d->next_pts, d->next_pts_tb, tb);
 603                     if (frame->pts != AV_NOPTS_VALUE) {
 604                         d->next_pts = frame->pts + frame->nb_samples;
 605                         d->next_pts_tb = tb;
 606                     }
 607                 }
 608                 break;
 609             case AVMEDIA_TYPE_SUBTITLE:
 610                 ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, &d->pkt_temp);
 611                 break;
 612         }
 613
 614         if (ret < 0) {
 615             d->packet_pending = 0;
 616         } else {
 617             d->pkt_temp.dts =
 618             d->pkt_temp.pts = AV_NOPTS_VALUE;
 619             if (d->pkt_temp.data) {
 620                 if (d->avctx->codec_type != AVMEDIA_TYPE_AUDIO)
 621                     ret = d->pkt_temp.size;
 622                 d->pkt_temp.data += ret;
 623                 d->pkt_temp.size -= ret;
 624                 if (d->pkt_temp.size <= 0)
 625                     d->packet_pending = 0;
 626             } else {
 627                 if (!got_frame) {
 628                     d->packet_pending = 0;
 629                     d->finished = d->pkt_serial;
 630                 }
 631             }
 632         }
 633     } while (!got_frame && !d->finished);
 634
 635     return got_frame;
 636 }
 637
 638 static void decoder_destroy(Decoder *d) {
 639     av_free_packet(&d->pkt);
 640 }
 641
 642 static void frame_queue_unref_item(Frame *vp)
 643 {
 644     av_frame_unref(vp->frame);
 645     avsubtitle_free(&vp->sub);
 646 }
 647
 648 static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
 649 {
 650     int i;
 651     memset(f, 0, sizeof(FrameQueue));
 652     if (!(f->mutex = SDL_CreateMutex()))
 653         return AVERROR(ENOMEM);
 654     if (!(f->cond = SDL_CreateCond()))
 655         return AVERROR(ENOMEM);
 656     f->pktq = pktq;
 657     f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
 658     f->keep_last = !!keep_last;
 659     for (i = 0; i < f->max_size; i++)
 660         if (!(f->queue[i].frame = av_frame_alloc()))
 661             return AVERROR(ENOMEM);
 662     return 0;
 663 }
 664
 665 static void frame_queue_destory(FrameQueue *f)
 666 {
 667     int i;
 668     for (i = 0; i < f->max_size; i++) {
 669         Frame *vp = &f->queue[i];
 670         frame_queue_unref_item(vp);
 671         av_frame_free(&vp->frame);
 672         free_picture(vp);
 673     }
 674     SDL_DestroyMutex(f->mutex);
 675     SDL_DestroyCond(f->cond);
 676 }
 677
 678 static void frame_queue_signal(FrameQueue *f)
 679 {
 680     SDL_LockMutex(f->mutex);
 681     SDL_CondSignal(f->cond);
 682     SDL_UnlockMutex(f->mutex);
 683 }
 684
 685 static Frame *frame_queue_peek(FrameQueue *f)
 686 {
 687     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
 688 }
 689
 690 static Frame *frame_queue_peek_next(FrameQueue *f)
 691 {
 692     return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
 693 }
 694
 695 static Frame *frame_queue_peek_last(FrameQueue *f)
 696 {
 697     return &f->queue[f->rindex];
 698 }
 699
 700 static Frame *frame_queue_peek_writable(FrameQueue *f)
 701 {
 702     /* wait until we have space to put a new frame */
 703     SDL_LockMutex(f->mutex);
 704     while (f->size >= f->max_size &&
 705            !f->pktq->abort_request) {
 706         SDL_CondWait(f->cond, f->mutex);
 707     }
 708     SDL_UnlockMutex(f->mutex);
 709
 710     if (f->pktq->abort_request)
 711         return NULL;
 712
 713     return &f->queue[f->windex];
 714 }
 715
 716 static void frame_queue_push(FrameQueue *f)
 717 {
 718     if (++f->windex == f->max_size)
 719         f->windex = 0;
 720     SDL_LockMutex(f->mutex);
 721     f->size++;
 722     SDL_UnlockMutex(f->mutex);
 723 }
 724
 725 static void frame_queue_next(FrameQueue *f)
 726 {
 727     if (f->keep_last && !f->rindex_shown) {
 728         f->rindex_shown = 1;
 729         return;
 730     }
 731     frame_queue_unref_item(&f->queue[f->rindex]);
 732     if (++f->rindex == f->max_size)
 733         f->rindex = 0;
 734     SDL_LockMutex(f->mutex);
 735     f->size--;
 736     SDL_CondSignal(f->cond);
 737     SDL_UnlockMutex(f->mutex);
 738 }
 739
 740 /* jump back to the previous frame if available by resetting rindex_shown */
 741 static int frame_queue_prev(FrameQueue *f)
 742 {
 743     int ret = f->rindex_shown;
 744     f->rindex_shown = 0;
 745     return ret;
 746 }
 747
 748 /* return the number of undisplayed frames in the queue */
 749 static int frame_queue_nb_remaining(FrameQueue *f)
 750 {
 751     return f->size - f->rindex_shown;
 752 }
 753
 754 /* return last shown position */
 755 static int64_t frame_queue_last_pos(FrameQueue *f)
 756 {
 757     Frame *fp = &f->queue[f->rindex];
 758     if (f->rindex_shown && fp->serial == f->pktq->serial)
 759         return fp->pos;
 760     else
 761         return -1;
 762 }
 763
 764 static inline void fill_rectangle(SDL_Surface *screen,
 765                                   int x, int y, int w, int h, int color, int update)
 766 {
 767     SDL_Rect rect;
 768     rect.x = x;
 769     rect.y = y;
 770     rect.w = w;
 771     rect.h = h;
 772     SDL_FillRect(screen, &rect, color);
 773     if (update && w > 0 && h > 0)
 774         SDL_UpdateRect(screen, x, y, w, h);
 775 }
 776
 777 /* draw only the border of a rectangle */
 778 static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
 779 {
 780     int w1, w2, h1, h2;
 781
 782     /* fill the background */
 783     w1 = x;
 784     if (w1 < 0)
 785         w1 = 0;
 786     w2 = width - (x + w);
 787     if (w2 < 0)
 788         w2 = 0;
 789     h1 = y;
 790     if (h1 < 0)
 791         h1 = 0;
 792     h2 = height - (y + h);
 793     if (h2 < 0)
 794         h2 = 0;
 795     fill_rectangle(screen,
 796                    xleft, ytop,
 797                    w1, height,
 798                    color, update);
 799     fill_rectangle(screen,
 800                    xleft + width - w2, ytop,
 801                    w2, height,
 802                    color, update);
 803     fill_rectangle(screen,
 804                    xleft + w1, ytop,
 805                    width - w1 - w2, h1,
 806                    color, update);
 807     fill_rectangle(screen,
 808                    xleft + w1, ytop + height - h2,
 809                    width - w1 - w2, h2,
 810                    color, update);
 811 }
 812
 813 #define ALPHA_BLEND(a, oldp, newp, s)\
 814 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
 815
 816 #define RGBA_IN(r, g, b, a, s)\
 817 {\
 818     unsigned int v = ((const uint32_t *)(s))[0];\
 819     a = (v >> 24) & 0xff;\
 820     r = (v >> 16) & 0xff;\
 821     g = (v >> 8) & 0xff;\
 822     b = v & 0xff;\
 823 }
 824
 825 #define YUVA_IN(y, u, v, a, s, pal)\
 826 {\
 827     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
 828     a = (val >> 24) & 0xff;\
 829     y = (val >> 16) & 0xff;\
 830     u = (val >> 8) & 0xff;\
 831     v = val & 0xff;\
 832 }
 833
 834 #define YUVA_OUT(d, y, u, v, a)\
 835 {\
 836     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
 837 }
 838
 839
 840 #define BPP 1
 841
 842 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
 843 {
 844     int wrap, wrap3, width2, skip2;
 845     int y, u, v, a, u1, v1, a1, w, h;
 846     uint8_t *lum, *cb, *cr;
 847     const uint8_t *p;
 848     const uint32_t *pal;
 849     int dstx, dsty, dstw, dsth;
 850
 851     dstw = av_clip(rect->w, 0, imgw);
 852     dsth = av_clip(rect->h, 0, imgh);
 853     dstx = av_clip(rect->x, 0, imgw - dstw);
 854     dsty = av_clip(rect->y, 0, imgh - dsth);
 855     lum = dst->data[0] + dsty * dst->linesize[0];
 856     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
 857     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
 858
 859     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
 860     skip2 = dstx >> 1;
 861     wrap = dst->linesize[0];
 862     wrap3 = rect->pict.linesize[0];
 863     p = rect->pict.data[0];
 864     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
 865
 866     if (dsty & 1) {
 867         lum += dstx;
 868         cb += skip2;
 869         cr += skip2;
 870
 871         if (dstx & 1) {
 872             YUVA_IN(y, u, v, a, p, pal);
 873             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 874             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 875             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 876             cb++;
 877             cr++;
 878             lum++;
 879             p += BPP;
 880         }
 881         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
 882             YUVA_IN(y, u, v, a, p, pal);
 883             u1 = u;
 884             v1 = v;
 885             a1 = a;
 886             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 887
 888             YUVA_IN(y, u, v, a, p + BPP, pal);
 889             u1 += u;
 890             v1 += v;
 891             a1 += a;
 892             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 893             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 894             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 895             cb++;
 896             cr++;
 897             p += 2 * BPP;
 898             lum += 2;
 899         }
 900         if (w) {
 901             YUVA_IN(y, u, v, a, p, pal);
 902             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 903             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 904             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 905             p++;
 906             lum++;
 907         }
 908         p += wrap3 - dstw * BPP;
 909         lum += wrap - dstw - dstx;
 910         cb += dst->linesize[1] - width2 - skip2;
 911         cr += dst->linesize[2] - width2 - skip2;
 912     }
 913     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
 914         lum += dstx;
 915         cb += skip2;
 916         cr += skip2;
 917
 918         if (dstx & 1) {
 919             YUVA_IN(y, u, v, a, p, pal);
 920             u1 = u;
 921             v1 = v;
 922             a1 = a;
 923             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 924             p += wrap3;
 925             lum += wrap;
 926             YUVA_IN(y, u, v, a, p, pal);
 927             u1 += u;
 928             v1 += v;
 929             a1 += a;
 930             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 931             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 932             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 933             cb++;
 934             cr++;
 935             p += -wrap3 + BPP;
 936             lum += -wrap + 1;
 937         }
 938         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
 939             YUVA_IN(y, u, v, a, p, pal);
 940             u1 = u;
 941             v1 = v;
 942             a1 = a;
 943             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 944
 945             YUVA_IN(y, u, v, a, p + BPP, pal);
 946             u1 += u;
 947             v1 += v;
 948             a1 += a;
 949             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 950             p += wrap3;
 951             lum += wrap;
 952
 953             YUVA_IN(y, u, v, a, p, pal);
 954             u1 += u;
 955             v1 += v;
 956             a1 += a;
 957             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 958
 959             YUVA_IN(y, u, v, a, p + BPP, pal);
 960             u1 += u;
 961             v1 += v;
 962             a1 += a;
 963             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 964
 965             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
 966             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
 967
 968             cb++;
 969             cr++;
 970             p += -wrap3 + 2 * BPP;
 971             lum += -wrap + 2;
 972         }
 973         if (w) {
 974             YUVA_IN(y, u, v, a, p, pal);
 975             u1 = u;
 976             v1 = v;
 977             a1 = a;
 978             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 979             p += wrap3;
 980             lum += wrap;
 981             YUVA_IN(y, u, v, a, p, pal);
 982             u1 += u;
 983             v1 += v;
 984             a1 += a;
 985             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 986             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 987             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 988             cb++;
 989             cr++;
 990             p += -wrap3 + BPP;
 991             lum += -wrap + 1;
 992         }
 993         p += wrap3 + (wrap3 - dstw * BPP);
 994         lum += wrap + (wrap - dstw - dstx);
 995         cb += dst->linesize[1] - width2 - skip2;
 996         cr += dst->linesize[2] - width2 - skip2;
 997     }
 998     /* handle odd height */
 999     if (h) {
1000         lum += dstx;
1001         cb += skip2;
1002         cr += skip2;
1003
1004         if (dstx & 1) {
1005             YUVA_IN(y, u, v, a, p, pal);
1006             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
1007             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
1008             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
1009             cb++;
1010             cr++;
1011             lum++;
1012             p += BPP;
1013         }
1014         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
1015             YUVA_IN(y, u, v, a, p, pal);
1016             u1 = u;
1017             v1 = v;
1018             a1 = a;
1019             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
1020
1021             YUVA_IN(y, u, v, a, p + BPP, pal);
1022             u1 += u;
1023             v1 += v;
1024             a1 += a;
1025             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
1026             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
1027             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
1028             cb++;
1029             cr++;
1030             p += 2 * BPP;
1031             lum += 2;
1032         }
1033         if (w) {
1034             YUVA_IN(y, u, v, a, p, pal);
1035             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
1036             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
1037             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
1038         }
1039     }
1040 }
1041
1042 static void free_picture(Frame *vp)
1043 {
1044      if (vp->bmp) {
1045          SDL_FreeYUVOverlay(vp->bmp);
1046          vp->bmp = NULL;
1047      }
1048 }
1049
1050 static void calculate_display_rect(SDL_Rect *rect,
1051                                    int scr_xleft, int scr_ytop, int scr_width, int scr_height,
1052                                    int pic_width, int pic_height, AVRational pic_sar)
1053 {
1054     float aspect_ratio;
1055     int width, height, x, y;
1056
1057     if (pic_sar.num == 0)
1058         aspect_ratio = 0;
1059     else
1060         aspect_ratio = av_q2d(pic_sar);
1061
1062     if (aspect_ratio <= 0.0)
1063         aspect_ratio = 1.0;
1064     aspect_ratio *= (float)pic_width / (float)pic_height;
1065
1066     /* XXX: we suppose the screen has a 1.0 pixel ratio */
1067     height = scr_height;
1068     width = ((int)rint(height * aspect_ratio)) & ~1;
1069     if (width > scr_width) {
1070         width = scr_width;
1071         height = ((int)rint(width / aspect_ratio)) & ~1;
1072     }
1073     x = (scr_width - width) / 2;
1074     y = (scr_height - height) / 2;
1075     rect->x = scr_xleft + x;
1076     rect->y = scr_ytop  + y;
1077     rect->w = FFMAX(width,  1);
1078     rect->h = FFMAX(height, 1);
1079 }
1080
1081 static void video_image_display(VideoState *is)
1082 {
1083     Frame *vp;
1084     Frame *sp;
1085     AVPicture pict;
1086     SDL_Rect rect;
1087     int i;
1088
1089     vp = frame_queue_peek(&is->pictq);
1090     if (vp->bmp) {
1091         if (is->subtitle_st) {
1092             if (frame_queue_nb_remaining(&is->subpq) > 0) {
1093                 sp = frame_queue_peek(&is->subpq);
1094
1095                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
1096                     SDL_LockYUVOverlay (vp->bmp);
1097
1098                     pict.data[0] = vp->bmp->pixels[0];
1099                     pict.data[1] = vp->bmp->pixels[2];
1100                     pict.data[2] = vp->bmp->pixels[1];
1101
1102                     pict.linesize[0] = vp->bmp->pitches[0];
1103                     pict.linesize[1] = vp->bmp->pitches[2];
1104                     pict.linesize[2] = vp->bmp->pitches[1];
1105
1106                     for (i = 0; i < sp->sub.num_rects; i++)
1107                         blend_subrect(&pict, sp->sub.rects[i],
1108                                       vp->bmp->w, vp->bmp->h);
1109
1110                     SDL_UnlockYUVOverlay (vp->bmp);
1111                 }
1112             }
1113         }
1114
1115         calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
1116
1117         SDL_DisplayYUVOverlay(vp->bmp, &rect);
1118
1119         if (rect.x != is->last_display_rect.x || rect.y != is->last_display_rect.y || rect.w != is->last_display_rect.w || rect.h != is->last_display_rect.h || is->force_refresh) {
1120             int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
1121             fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
1122             is->last_display_rect = rect;
1123         }
1124     }
1125 }
1126
1127 static inline int compute_mod(int a, int b)
1128 {
1129     return a < 0 ? a%b + b : a%b;
1130 }
1131
1132 static void video_audio_display(VideoState *s)
1133 {
1134     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
1135     int ch, channels, h, h2, bgcolor, fgcolor;
1136     int64_t time_diff;
1137     int rdft_bits, nb_freq;
1138
1139     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
1140         ;
1141     nb_freq = 1 << (rdft_bits - 1);
1142
1143     /* compute display index : center on currently output samples */
1144     channels = s->audio_tgt.channels;
1145     nb_display_channels = channels;
1146     if (!s->paused) {
1147         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
1148         n = 2 * channels;
1149         delay = s->audio_write_buf_size;
1150         delay /= n;
1151
1152         /* to be more precise, we take into account the time spent since
1153            the last buffer computation */
1154         if (audio_callback_time) {
1155             time_diff = av_gettime_relative() - audio_callback_time;
1156             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
1157         }
1158
1159         delay += 2 * data_used;
1160         if (delay < data_used)
1161             delay = data_used;
1162
1163         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
1164         if (s->show_mode == SHOW_MODE_WAVES) {
1165             h = INT_MIN;
1166             for (i = 0; i < 1000; i += channels) {
1167                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
1168                 int a = s->sample_array[idx];
1169                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
1170                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
1171                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
1172                 int score = a - d;
1173                 if (h < score && (b ^ c) < 0) {
1174                     h = score;
1175                     i_start = idx;
1176                 }
1177             }
1178         }
1179
1180         s->last_i_start = i_start;
1181     } else {
1182         i_start = s->last_i_start;
1183     }
1184
1185     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
1186     if (s->show_mode == SHOW_MODE_WAVES) {
1187         fill_rectangle(screen,
1188                        s->xleft, s->ytop, s->width, s->height,
1189                        bgcolor, 0);
1190
1191         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
1192
1193         /* total height for one channel */
1194         h = s->height / nb_display_channels;
1195         /* graph height / 2 */
1196         h2 = (h * 9) / 20;
1197         for (ch = 0; ch < nb_display_channels; ch++) {
1198             i = i_start + ch;
1199             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
1200             for (x = 0; x < s->width; x++) {
1201                 y = (s->sample_array[i] * h2) >> 15;
1202                 if (y < 0) {
1203                     y = -y;
1204                     ys = y1 - y;
1205                 } else {
1206                     ys = y1;
1207                 }
1208                 fill_rectangle(screen,
1209                                s->xleft + x, ys, 1, y,
1210                                fgcolor, 0);
1211                 i += channels;
1212                 if (i >= SAMPLE_ARRAY_SIZE)
1213                     i -= SAMPLE_ARRAY_SIZE;
1214             }
1215         }
1216
1217         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
1218
1219         for (ch = 1; ch < nb_display_channels; ch++) {
1220             y = s->ytop + ch * h;
1221             fill_rectangle(screen,
1222                            s->xleft, y, s->width, 1,
1223                            fgcolor, 0);
1224         }
1225         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
1226     } else {
1227         nb_display_channels= FFMIN(nb_display_channels, 2);
1228         if (rdft_bits != s->rdft_bits) {
1229             av_rdft_end(s->rdft);
1230             av_free(s->rdft_data);
1231             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
1232             s->rdft_bits = rdft_bits;
1233             s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
1234         }
1235         {
1236             FFTSample *data[2];
1237             for (ch = 0; ch < nb_display_channels; ch++) {
1238                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
1239                 i = i_start + ch;
1240                 for (x = 0; x < 2 * nb_freq; x++) {
1241                     double w = (x-nb_freq) * (1.0 / nb_freq);
1242                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1243                     i += channels;
1244                     if (i >= SAMPLE_ARRAY_SIZE)
1245                         i -= SAMPLE_ARRAY_SIZE;
1246                 }
1247                 av_rdft_calc(s->rdft, data[ch]);
1248             }
1249             /* Least efficient way to do this, we should of course
1250              * directly access it but it is more than fast enough. */
1251             for (y = 0; y < s->height; y++) {
1252                 double w = 1 / sqrt(nb_freq);
1253                 int a = sqrt(w * sqrt(data[0][2 * y + 0] * data[0][2 * y + 0] + data[0][2 * y + 1] * data[0][2 * y + 1]));
1254                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
1255                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
1256                 a = FFMIN(a, 255);
1257                 b = FFMIN(b, 255);
1258                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
1259
1260                 fill_rectangle(screen,
1261                             s->xpos, s->height-y, 1, 1,
1262                             fgcolor, 0);
1263             }
1264         }
1265         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
1266         if (!s->paused)
1267             s->xpos++;
1268         if (s->xpos >= s->width)
1269             s->xpos= s->xleft;
1270     }
1271 }
1272
1273 static void stream_close(VideoState *is)
1274 {
1275     /* XXX: use a special url_shutdown call to abort parse cleanly */
1276     is->abort_request = 1;
1277     SDL_WaitThread(is->read_tid, NULL);
1278     packet_queue_destroy(&is->videoq);
1279     packet_queue_destroy(&is->audioq);
1280     packet_queue_destroy(&is->subtitleq);
1281
1282     /* free all pictures */
1283     frame_queue_destory(&is->pictq);
1284     frame_queue_destory(&is->subpq);
1285     SDL_DestroyCond(is->continue_read_thread);
1286 #if !CONFIG_AVFILTER
1287     sws_freeContext(is->img_convert_ctx);
1288 #endif
1289     av_free(is);
1290 }
1291
1292 static void do_exit(VideoState *is)
1293 {
1294     if (is) {
1295         stream_close(is);
1296     }
1297     av_lockmgr_register(NULL);
1298     uninit_opts();
1299 #if CONFIG_AVFILTER
1300     av_freep(&vfilters_list);
1301 #endif
1302     avformat_network_deinit();
1303     if (show_status)
1304         printf("\n");
1305     SDL_Quit();
1306     av_log(NULL, AV_LOG_QUIET, "%s", "");
1307     exit(0);
1308 }
1309
1310 static void sigterm_handler(int sig)
1311 {
1312     exit(123);
1313 }
1314
1315 static void set_default_window_size(int width, int height, AVRational sar)
1316 {
1317     SDL_Rect rect;
1318     calculate_display_rect(&rect, 0, 0, INT_MAX, height, width, height, sar);
1319     default_width  = rect.w;
1320     default_height = rect.h;
1321 }
1322
1323 static int video_open(VideoState *is, int force_set_video_mode, Frame *vp)
1324 {
1325     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
1326     int w,h;
1327
1328     if (is_full_screen) flags |= SDL_FULLSCREEN;
1329     else                flags |= SDL_RESIZABLE;
1330
1331     if (vp && vp->width)
1332         set_default_window_size(vp->width, vp->height, vp->sar);
1333
1334     if (is_full_screen && fs_screen_width) {
1335         w = fs_screen_width;
1336         h = fs_screen_height;
1337     } else if (!is_full_screen && screen_width) {
1338         w = screen_width;
1339         h = screen_height;
1340     } else {
1341         w = default_width;
1342         h = default_height;
1343     }
1344     w = FFMIN(16383, w);
1345     if (screen && is->width == screen->w && screen->w == w
1346        && is->height== screen->h && screen->h == h && !force_set_video_mode)
1347         return 0;
1348     screen = SDL_SetVideoMode(w, h, 0, flags);
1349     if (!screen) {
1350         av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
1351         do_exit(is);
1352     }
1353     if (!window_title)
1354         window_title = input_filename;
1355     SDL_WM_SetCaption(window_title, window_title);
1356
1357     is->width  = screen->w;
1358     is->height = screen->h;
1359
1360     return 0;
1361 }
1362
1363 /* display the current picture, if any */
1364 static void video_display(VideoState *is)
1365 {
1366     if (!screen)
1367         video_open(is, 0, NULL);
1368     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1369         video_audio_display(is);
1370     else if (is->video_st)
1371         video_image_display(is);
1372 }
1373
1374 static double get_clock(Clock *c)
1375 {
1376     if (*c->queue_serial != c->serial)
1377         return NAN;
1378     if (c->paused) {
1379         return c->pts;
1380     } else {
1381         double time = av_gettime_relative() / 1000000.0;
1382         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1383     }
1384 }
1385
1386 static void set_clock_at(Clock *c, double pts, int serial, double time)
1387 {
1388     c->pts = pts;
1389     c->last_updated = time;
1390     c->pts_drift = c->pts - time;
1391     c->serial = serial;
1392 }
1393
1394 static void set_clock(Clock *c, double pts, int serial)
1395 {
1396     double time = av_gettime_relative() / 1000000.0;
1397     set_clock_at(c, pts, serial, time);
1398 }
1399
1400 static void set_clock_speed(Clock *c, double speed)
1401 {
1402     set_clock(c, get_clock(c), c->serial);
1403     c->speed = speed;
1404 }
1405
1406 static void init_clock(Clock *c, int *queue_serial)
1407 {
1408     c->speed = 1.0;
1409     c->paused = 0;
1410     c->queue_serial = queue_serial;
1411     set_clock(c, NAN, -1);
1412 }
1413
1414 static void sync_clock_to_slave(Clock *c, Clock *slave)
1415 {
1416     double clock = get_clock(c);
1417     double slave_clock = get_clock(slave);
1418     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1419         set_clock(c, slave_clock, slave->serial);
1420 }
1421
1422 static int get_master_sync_type(VideoState *is) {
1423     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1424         if (is->video_st)
1425             return AV_SYNC_VIDEO_MASTER;
1426         else
1427             return AV_SYNC_AUDIO_MASTER;
1428     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1429         if (is->audio_st)
1430             return AV_SYNC_AUDIO_MASTER;
1431         else
1432             return AV_SYNC_EXTERNAL_CLOCK;
1433     } else {
1434         return AV_SYNC_EXTERNAL_CLOCK;
1435     }
1436 }
1437
1438 /* get the current master clock value */
1439 static double get_master_clock(VideoState *is)
1440 {
1441     double val;
1442
1443     switch (get_master_sync_type(is)) {
1444         case AV_SYNC_VIDEO_MASTER:
1445             val = get_clock(&is->vidclk);
1446             break;
1447         case AV_SYNC_AUDIO_MASTER:
1448             val = get_clock(&is->audclk);
1449             break;
1450         default:
1451             val = get_clock(&is->extclk);
1452             break;
1453     }
1454     return val;
1455 }
1456
1457 static void check_external_clock_speed(VideoState *is) {
1458    if (is->video_stream >= 0 && is->videoq.nb_packets <= MIN_FRAMES / 2 ||
1459        is->audio_stream >= 0 && is->audioq.nb_packets <= MIN_FRAMES / 2) {
1460        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1461    } else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
1462               (is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
1463        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1464    } else {
1465        double speed = is->extclk.speed;
1466        if (speed != 1.0)
1467            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1468    }
1469 }
1470
1471 /* seek in the stream */
1472 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1473 {
1474     if (!is->seek_req) {
1475         is->seek_pos = pos;
1476         is->seek_rel = rel;
1477         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1478         if (seek_by_bytes)
1479             is->seek_flags |= AVSEEK_FLAG_BYTE;
1480         is->seek_req = 1;
1481         SDL_CondSignal(is->continue_read_thread);
1482     }
1483 }
1484
1485 /* pause or resume the video */
1486 static void stream_toggle_pause(VideoState *is)
1487 {
1488     if (is->paused) {
1489         is->frame_timer += av_gettime_relative() / 1000000.0 + is->vidclk.pts_drift - is->vidclk.pts;
1490         if (is->read_pause_return != AVERROR(ENOSYS)) {
1491             is->vidclk.paused = 0;
1492         }
1493         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1494     }
1495     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1496     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1497 }
1498
1499 static void toggle_pause(VideoState *is)
1500 {
1501     stream_toggle_pause(is);
1502     is->step = 0;
1503 }
1504
1505 static void step_to_next_frame(VideoState *is)
1506 {
1507     /* if the stream is paused unpause it, then step */
1508     if (is->paused)
1509         stream_toggle_pause(is);
1510     is->step = 1;
1511 }
1512
1513 static double compute_target_delay(double delay, VideoState *is)
1514 {
1515     double sync_threshold, diff;
1516
1517     /* update delay to follow master synchronisation source */
1518     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1519         /* if video is slave, we try to correct big delays by
1520            duplicating or deleting a frame */
1521         diff = get_clock(&is->vidclk) - get_master_clock(is);
1522
1523         /* skip or repeat frame. We take into account the
1524            delay to compute the threshold. I still don't know
1525            if it is the best guess */
1526         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1527         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1528             if (diff <= -sync_threshold)
1529                 delay = FFMAX(0, delay + diff);
1530             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1531                 delay = delay + diff;
1532             else if (diff >= sync_threshold)
1533                 delay = 2 * delay;
1534         }
1535     }
1536
1537     av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
1538             delay, -diff);
1539
1540     return delay;
1541 }
1542
1543 static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
1544     if (vp->serial == nextvp->serial) {
1545         double duration = nextvp->pts - vp->pts;
1546         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1547             return vp->duration;
1548         else
1549             return duration;
1550     } else {
1551         return 0.0;
1552     }
1553 }
1554
1555 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1556     /* update current video pts */
1557     set_clock(&is->vidclk, pts, serial);
1558     sync_clock_to_slave(&is->extclk, &is->vidclk);
1559 }
1560
1561 /* called to display each frame */
1562 static void video_refresh(void *opaque, double *remaining_time)
1563 {
1564     VideoState *is = opaque;
1565     double time;
1566
1567     Frame *sp, *sp2;
1568
1569     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1570         check_external_clock_speed(is);
1571
1572     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1573         time = av_gettime_relative() / 1000000.0;
1574         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1575             video_display(is);
1576             is->last_vis_time = time;
1577         }
1578         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1579     }
1580
1581     if (is->video_st) {
1582         int redisplay = 0;
1583         if (is->force_refresh)
1584             redisplay = frame_queue_prev(&is->pictq);
1585 retry:
1586         if (frame_queue_nb_remaining(&is->pictq) == 0) {
1587             // nothing to do, no picture to display in the queue
1588         } else {
1589             double last_duration, duration, delay;
1590             Frame *vp, *lastvp;
1591
1592             /* dequeue the picture */
1593             lastvp = frame_queue_peek_last(&is->pictq);
1594             vp = frame_queue_peek(&is->pictq);
1595
1596             if (vp->serial != is->videoq.serial) {
1597                 frame_queue_next(&is->pictq);
1598                 redisplay = 0;
1599                 goto retry;
1600             }
1601
1602             if (lastvp->serial != vp->serial && !redisplay)
1603                 is->frame_timer = av_gettime_relative() / 1000000.0;
1604
1605             if (is->paused)
1606                 goto display;
1607
1608             /* compute nominal last_duration */
1609             last_duration = vp_duration(is, lastvp, vp);
1610             if (redisplay)
1611                 delay = 0.0;
1612             else
1613                 delay = compute_target_delay(last_duration, is);
1614
1615             time= av_gettime_relative()/1000000.0;
1616             if (time < is->frame_timer + delay && !redisplay) {
1617                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1618                 return;
1619             }
1620
1621             is->frame_timer += delay;
1622             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1623                 is->frame_timer = time;
1624
1625             SDL_LockMutex(is->pictq.mutex);
1626             if (!redisplay && !isnan(vp->pts))
1627                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1628             SDL_UnlockMutex(is->pictq.mutex);
1629
1630             if (frame_queue_nb_remaining(&is->pictq) > 1) {
1631                 Frame *nextvp = frame_queue_peek_next(&is->pictq);
1632                 duration = vp_duration(is, vp, nextvp);
1633                 if(!is->step && (redisplay || framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1634                     if (!redisplay)
1635                         is->frame_drops_late++;
1636                     frame_queue_next(&is->pictq);
1637                     redisplay = 0;
1638                     goto retry;
1639                 }
1640             }
1641
1642             if (is->subtitle_st) {
1643                     while (frame_queue_nb_remaining(&is->subpq) > 0) {
1644                         sp = frame_queue_peek(&is->subpq);
1645
1646                         if (frame_queue_nb_remaining(&is->subpq) > 1)
1647                             sp2 = frame_queue_peek_next(&is->subpq);
1648                         else
1649                             sp2 = NULL;
1650
1651                         if (sp->serial != is->subtitleq.serial
1652                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1653                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1654                         {
1655                             frame_queue_next(&is->subpq);
1656                         } else {
1657                             break;
1658                         }
1659                     }
1660             }
1661
1662 display:
1663             /* display picture */
1664             if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
1665                 video_display(is);
1666
1667             frame_queue_next(&is->pictq);
1668
1669             if (is->step && !is->paused)
1670                 stream_toggle_pause(is);
1671         }
1672     }
1673     is->force_refresh = 0;
1674     if (show_status) {
1675         static int64_t last_time;
1676         int64_t cur_time;
1677         int aqsize, vqsize, sqsize;
1678         double av_diff;
1679
1680         cur_time = av_gettime_relative();
1681         if (!last_time || (cur_time - last_time) >= 30000) {
1682             aqsize = 0;
1683             vqsize = 0;
1684             sqsize = 0;
1685             if (is->audio_st)
1686                 aqsize = is->audioq.size;
1687             if (is->video_st)
1688                 vqsize = is->videoq.size;
1689             if (is->subtitle_st)
1690                 sqsize = is->subtitleq.size;
1691             av_diff = 0;
1692             if (is->audio_st && is->video_st)
1693                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1694             else if (is->video_st)
1695                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1696             else if (is->audio_st)
1697                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1698             av_log(NULL, AV_LOG_INFO,
1699                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1700                    get_master_clock(is),
1701                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1702                    av_diff,
1703                    is->frame_drops_early + is->frame_drops_late,
1704                    aqsize / 1024,
1705                    vqsize / 1024,
1706                    sqsize,
1707                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1708                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1709             fflush(stdout);
1710             last_time = cur_time;
1711         }
1712     }
1713 }
1714
1715 /* allocate a picture (needs to do that in main thread to avoid
1716    potential locking problems */
1717 static void alloc_picture(VideoState *is)
1718 {
1719     Frame *vp;
1720     int64_t bufferdiff;
1721
1722     vp = &is->pictq.queue[is->pictq.windex];
1723
1724     free_picture(vp);
1725
1726     video_open(is, 0, vp);
1727
1728     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1729                                    SDL_YV12_OVERLAY,
1730                                    screen);
1731     bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
1732     if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
1733         /* SDL allocates a buffer smaller than requested if the video
1734          * overlay hardware is unable to support the requested size. */
1735         av_log(NULL, AV_LOG_FATAL,
1736                "Error: the video system does not support an image\n"
1737                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1738                         "to reduce the image size.\n", vp->width, vp->height );
1739         do_exit(is);
1740     }
1741
1742     SDL_LockMutex(is->pictq.mutex);
1743     vp->allocated = 1;
1744     SDL_CondSignal(is->pictq.cond);
1745     SDL_UnlockMutex(is->pictq.mutex);
1746 }
1747
1748 static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
1749     int i, width, height;
1750     Uint8 *p, *maxp;
1751     for (i = 0; i < 3; i++) {
1752         width  = bmp->w;
1753         height = bmp->h;
1754         if (i > 0) {
1755             width  >>= 1;
1756             height >>= 1;
1757         }
1758         if (bmp->pitches[i] > width) {
1759             maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
1760             for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
1761                 *(p+1) = *p;
1762         }
1763     }
1764 }
1765
1766 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1767 {
1768     Frame *vp;
1769
1770 #if defined(DEBUG_SYNC) && 0
1771     printf("frame_type=%c pts=%0.3f\n",
1772            av_get_picture_type_char(src_frame->pict_type), pts);
1773 #endif
1774
1775     if (!(vp = frame_queue_peek_writable(&is->pictq)))
1776         return -1;
1777
1778     vp->sar = src_frame->sample_aspect_ratio;
1779
1780     /* alloc or resize hardware picture buffer */
1781     if (!vp->bmp || vp->reallocate || !vp->allocated ||
1782         vp->width  != src_frame->width ||
1783         vp->height != src_frame->height) {
1784         SDL_Event event;
1785
1786         vp->allocated  = 0;
1787         vp->reallocate = 0;
1788         vp->width = src_frame->width;
1789         vp->height = src_frame->height;
1790
1791         /* the allocation must be done in the main thread to avoid
1792            locking problems. */
1793         event.type = FF_ALLOC_EVENT;
1794         event.user.data1 = is;
1795         SDL_PushEvent(&event);
1796
1797         /* wait until the picture is allocated */
1798         SDL_LockMutex(is->pictq.mutex);
1799         while (!vp->allocated && !is->videoq.abort_request) {
1800             SDL_CondWait(is->pictq.cond, is->pictq.mutex);
1801         }
1802         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1803         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1804             while (!vp->allocated && !is->abort_request) {
1805                 SDL_CondWait(is->pictq.cond, is->pictq.mutex);
1806             }
1807         }
1808         SDL_UnlockMutex(is->pictq.mutex);
1809
1810         if (is->videoq.abort_request)
1811             return -1;
1812     }
1813
1814     /* if the frame is not skipped, then display it */
1815     if (vp->bmp) {
1816         AVPicture pict = { { 0 } };
1817
1818         /* get a pointer on the bitmap */
1819         SDL_LockYUVOverlay (vp->bmp);
1820
1821         pict.data[0] = vp->bmp->pixels[0];
1822         pict.data[1] = vp->bmp->pixels[2];
1823         pict.data[2] = vp->bmp->pixels[1];
1824
1825         pict.linesize[0] = vp->bmp->pitches[0];
1826         pict.linesize[1] = vp->bmp->pitches[2];
1827         pict.linesize[2] = vp->bmp->pitches[1];
1828
1829 #if CONFIG_AVFILTER
1830         // FIXME use direct rendering
1831         av_picture_copy(&pict, (AVPicture *)src_frame,
1832                         src_frame->format, vp->width, vp->height);
1833 #else
1834         av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1835         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1836             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1837             AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1838         if (!is->img_convert_ctx) {
1839             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1840             exit(1);
1841         }
1842         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1843                   0, vp->height, pict.data, pict.linesize);
1844 #endif
1845         /* workaround SDL PITCH_WORKAROUND */
1846         duplicate_right_border_pixels(vp->bmp);
1847         /* update the bitmap content */
1848         SDL_UnlockYUVOverlay(vp->bmp);
1849
1850         vp->pts = pts;
1851         vp->duration = duration;
1852         vp->pos = pos;
1853         vp->serial = serial;
1854
1855         /* now we can update the picture count */
1856         frame_queue_push(&is->pictq);
1857     }
1858     return 0;
1859 }
1860
1861 static int get_video_frame(VideoState *is, AVFrame *frame)
1862 {
1863     int got_picture;
1864
1865     if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
1866         return -1;
1867
1868     if (got_picture) {
1869         double dpts = NAN;
1870
1871         if (frame->pts != AV_NOPTS_VALUE)
1872             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1873
1874         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1875
1876         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1877             if (frame->pts != AV_NOPTS_VALUE) {
1878                 double diff = dpts - get_master_clock(is);
1879                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1880                     diff - is->frame_last_filter_delay < 0 &&
1881                     is->viddec.pkt_serial == is->vidclk.serial &&
1882                     is->videoq.nb_packets) {
1883                     is->frame_drops_early++;
1884                     av_frame_unref(frame);
1885                     got_picture = 0;
1886                 }
1887             }
1888         }
1889     }
1890
1891     return got_picture;
1892 }
1893
1894 #if CONFIG_AVFILTER
1895 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1896                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1897 {
1898     int ret, i;
1899     int nb_filters = graph->nb_filters;
1900     AVFilterInOut *outputs = NULL, *inputs = NULL;
1901
1902     if (filtergraph) {
1903         outputs = avfilter_inout_alloc();
1904         inputs  = avfilter_inout_alloc();
1905         if (!outputs || !inputs) {
1906             ret = AVERROR(ENOMEM);
1907             goto fail;
1908         }
1909
1910         outputs->name       = av_strdup("in");
1911         outputs->filter_ctx = source_ctx;
1912         outputs->pad_idx    = 0;
1913         outputs->next       = NULL;
1914
1915         inputs->name        = av_strdup("out");
1916         inputs->filter_ctx  = sink_ctx;
1917         inputs->pad_idx     = 0;
1918         inputs->next        = NULL;
1919
1920         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1921             goto fail;
1922     } else {
1923         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1924             goto fail;
1925     }
1926
1927     /* Reorder the filters to ensure that inputs of the custom filters are merged first */
1928     for (i = 0; i < graph->nb_filters - nb_filters; i++)
1929         FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
1930
1931     ret = avfilter_graph_config(graph, NULL);
1932 fail:
1933     avfilter_inout_free(&outputs);
1934     avfilter_inout_free(&inputs);
1935     return ret;
1936 }
1937
1938 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1939 {
1940     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
1941     char sws_flags_str[128];
1942     char buffersrc_args[256];
1943     int ret;
1944     AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
1945     AVCodecContext *codec = is->video_st->codec;
1946     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1947
1948     av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1949     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1950     graph->scale_sws_opts = av_strdup(sws_flags_str);
1951
1952     snprintf(buffersrc_args, sizeof(buffersrc_args),
1953              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1954              frame->width, frame->height, frame->format,
1955              is->video_st->time_base.num, is->video_st->time_base.den,
1956              codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
1957     if (fr.num && fr.den)
1958         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1959
1960     if ((ret = avfilter_graph_create_filter(&filt_src,
1961                                             avfilter_get_by_name("buffer"),
1962                                             "ffplay_buffer", buffersrc_args, NULL,
1963                                             graph)) < 0)
1964         goto fail;
1965
1966     ret = avfilter_graph_create_filter(&filt_out,
1967                                        avfilter_get_by_name("buffersink"),
1968                                        "ffplay_buffersink", NULL, NULL, graph);
1969     if (ret < 0)
1970         goto fail;
1971
1972     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1973         goto fail;
1974
1975     last_filter = filt_out;
1976
1977 /* Note: this macro adds a filter before the lastly added filter, so the
1978  * processing order of the filters is in reverse */
1979 #define INSERT_FILT(name, arg) do {                                         \
1980     AVFilterContext *filt_ctx;                                              \
1981                                                                             \
1982     ret = avfilter_graph_create_filter(&filt_ctx,                           \
1983                                        avfilter_get_by_name(name),          \
1984                                        "ffplay_" name, arg, NULL, graph);   \
1985     if (ret < 0)                                                            \
1986         goto fail;                                                          \
1987                                                                             \
1988     ret = avfilter_link(filt_ctx, 0, last_filter, 0);                       \
1989     if (ret < 0)                                                            \
1990         goto fail;                                                          \
1991                                                                             \
1992     last_filter = filt_ctx;                                                 \
1993 } while (0)
1994
1995     /* SDL YUV code is not handling odd width/height for some driver
1996      * combinations, therefore we crop the picture to an even width/height. */
1997     INSERT_FILT("crop", "floor(in_w/2)*2:floor(in_h/2)*2");
1998
1999     if (autorotate) {
2000         AVDictionaryEntry *rotate_tag = av_dict_get(is->video_st->metadata, "rotate", NULL, 0);
2001         if (rotate_tag && *rotate_tag->value && strcmp(rotate_tag->value, "0")) {
2002             if (!strcmp(rotate_tag->value, "90")) {
2003                 INSERT_FILT("transpose", "clock");
2004             } else if (!strcmp(rotate_tag->value, "180")) {
2005                 INSERT_FILT("hflip", NULL);
2006                 INSERT_FILT("vflip", NULL);
2007             } else if (!strcmp(rotate_tag->value, "270")) {
2008                 INSERT_FILT("transpose", "cclock");
2009             } else {
2010                 char rotate_buf[64];
2011                 snprintf(rotate_buf, sizeof(rotate_buf), "%s*PI/180", rotate_tag->value);
2012                 INSERT_FILT("rotate", rotate_buf);
2013             }
2014         }
2015     }
2016
2017     if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
2018         goto fail;
2019
2020     is->in_video_filter  = filt_src;
2021     is->out_video_filter = filt_out;
2022
2023 fail:
2024     return ret;
2025 }
2026
2027 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
2028 {
2029     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
2030     int sample_rates[2] = { 0, -1 };
2031     int64_t channel_layouts[2] = { 0, -1 };
2032     int channels[2] = { 0, -1 };
2033     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
2034     char aresample_swr_opts[512] = "";
2035     AVDictionaryEntry *e = NULL;
2036     char asrc_args[256];
2037     int ret;
2038
2039     avfilter_graph_free(&is->agraph);
2040     if (!(is->agraph = avfilter_graph_alloc()))
2041         return AVERROR(ENOMEM);
2042
2043     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
2044         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
2045     if (strlen(aresample_swr_opts))
2046         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
2047     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
2048
2049     ret = snprintf(asrc_args, sizeof(asrc_args),
2050                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
2051                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
2052                    is->audio_filter_src.channels,
2053                    1, is->audio_filter_src.freq);
2054     if (is->audio_filter_src.channel_layout)
2055         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
2056                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
2057
2058     ret = avfilter_graph_create_filter(&filt_asrc,
2059                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
2060                                        asrc_args, NULL, is->agraph);
2061     if (ret < 0)
2062         goto end;
2063
2064
2065     ret = avfilter_graph_create_filter(&filt_asink,
2066                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
2067                                        NULL, NULL, is->agraph);
2068     if (ret < 0)
2069         goto end;
2070
2071     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
2072         goto end;
2073     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
2074         goto end;
2075
2076     if (force_output_format) {
2077         channel_layouts[0] = is->audio_tgt.channel_layout;
2078         channels       [0] = is->audio_tgt.channels;
2079         sample_rates   [0] = is->audio_tgt.freq;
2080         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
2081             goto end;
2082         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2083             goto end;
2084         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2085             goto end;
2086         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
2087             goto end;
2088     }
2089
2090
2091     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
2092         goto end;
2093
2094     is->in_audio_filter  = filt_asrc;
2095     is->out_audio_filter = filt_asink;
2096
2097 end:
2098     if (ret < 0)
2099         avfilter_graph_free(&is->agraph);
2100     return ret;
2101 }
2102 #endif  /* CONFIG_AVFILTER */
2103
2104 static int video_thread(void *arg)
2105 {
2106     VideoState *is = arg;
2107     AVFrame *frame = av_frame_alloc();
2108     double pts;
2109     double duration;
2110     int ret;
2111     AVRational tb = is->video_st->time_base;
2112     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
2113
2114 #if CONFIG_AVFILTER
2115     AVFilterGraph *graph = avfilter_graph_alloc();
2116     AVFilterContext *filt_out = NULL, *filt_in = NULL;
2117     int last_w = 0;
2118     int last_h = 0;
2119     enum AVPixelFormat last_format = -2;
2120     int last_serial = -1;
2121     int last_vfilter_idx = 0;
2122 #endif
2123
2124     for (;;) {
2125         while (is->paused && !is->videoq.abort_request)
2126             SDL_Delay(10);
2127
2128         ret = get_video_frame(is, frame);
2129         if (ret < 0)
2130             goto the_end;
2131         if (!ret)
2132             continue;
2133
2134 #if CONFIG_AVFILTER
2135         if (   last_w != frame->width
2136             || last_h != frame->height
2137             || last_format != frame->format
2138             || last_serial != is->viddec.pkt_serial
2139             || last_vfilter_idx != is->vfilter_idx) {
2140             av_log(NULL, AV_LOG_DEBUG,
2141                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
2142                    last_w, last_h,
2143                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
2144                    frame->width, frame->height,
2145                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
2146             avfilter_graph_free(&graph);
2147             graph = avfilter_graph_alloc();
2148             if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
2149                 SDL_Event event;
2150                 event.type = FF_QUIT_EVENT;
2151                 event.user.data1 = is;
2152                 SDL_PushEvent(&event);
2153                 goto the_end;
2154             }
2155             filt_in  = is->in_video_filter;
2156             filt_out = is->out_video_filter;
2157             last_w = frame->width;
2158             last_h = frame->height;
2159             last_format = frame->format;
2160             last_serial = is->viddec.pkt_serial;
2161             last_vfilter_idx = is->vfilter_idx;
2162             frame_rate = filt_out->inputs[0]->frame_rate;
2163         }
2164
2165         ret = av_buffersrc_add_frame(filt_in, frame);
2166         if (ret < 0)
2167             goto the_end;
2168
2169         while (ret >= 0) {
2170             is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2171
2172             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2173             if (ret < 0) {
2174                 if (ret == AVERROR_EOF)
2175                     is->viddec.finished = is->viddec.pkt_serial;
2176                 ret = 0;
2177                 break;
2178             }
2179
2180             is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2181             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2182                 is->frame_last_filter_delay = 0;
2183             tb = filt_out->inputs[0]->time_base;
2184 #endif
2185             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2186             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2187             ret = queue_picture(is, frame, pts, duration, av_frame_get_pkt_pos(frame), is->viddec.pkt_serial);
2188             av_frame_unref(frame);
2189 #if CONFIG_AVFILTER
2190         }
2191 #endif
2192
2193         if (ret < 0)
2194             goto the_end;
2195     }
2196  the_end:
2197 #if CONFIG_AVFILTER
2198     avfilter_graph_free(&graph);
2199 #endif
2200     av_frame_free(&frame);
2201     return 0;
2202 }
2203
2204 static int subtitle_thread(void *arg)
2205 {
2206     VideoState *is = arg;
2207     Frame *sp;
2208     int got_subtitle;
2209     double pts;
2210     int i, j;
2211     int r, g, b, y, u, v, a;
2212
2213     for (;;) {
2214         while (is->paused && !is->subtitleq.abort_request) {
2215             SDL_Delay(10);
2216         }
2217
2218         if (!(sp = frame_queue_peek_writable(&is->subpq)))
2219             return 0;
2220
2221         if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
2222             break;
2223
2224         pts = 0;
2225
2226         if (got_subtitle && sp->sub.format == 0) {
2227             if (sp->sub.pts != AV_NOPTS_VALUE)
2228                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2229             sp->pts = pts;
2230             sp->serial = is->subdec.pkt_serial;
2231
2232             for (i = 0; i < sp->sub.num_rects; i++)
2233             {
2234                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
2235                 {
2236                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
2237                     y = RGB_TO_Y_CCIR(r, g, b);
2238                     u = RGB_TO_U_CCIR(r, g, b, 0);
2239                     v = RGB_TO_V_CCIR(r, g, b, 0);
2240                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
2241                 }
2242             }
2243
2244             /* now we can update the picture count */
2245             frame_queue_push(&is->subpq);
2246         } else if (got_subtitle) {
2247             avsubtitle_free(&sp->sub);
2248         }
2249     }
2250     return 0;
2251 }
2252
2253 /* copy samples for viewing in editor window */
2254 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2255 {
2256     int size, len;
2257
2258     size = samples_size / sizeof(short);
2259     while (size > 0) {
2260         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2261         if (len > size)
2262             len = size;
2263         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2264         samples += len;
2265         is->sample_array_index += len;
2266         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2267             is->sample_array_index = 0;
2268         size -= len;
2269     }
2270 }
2271
2272 /* return the wanted number of samples to get better sync if sync_type is video
2273  * or external master clock */
2274 static int synchronize_audio(VideoState *is, int nb_samples)
2275 {
2276     int wanted_nb_samples = nb_samples;
2277
2278     /* if not master, then we try to remove or add samples to correct the clock */
2279     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2280         double diff, avg_diff;
2281         int min_nb_samples, max_nb_samples;
2282
2283         diff = get_clock(&is->audclk) - get_master_clock(is);
2284
2285         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2286             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2287             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2288                 /* not enough measures to have a correct estimate */
2289                 is->audio_diff_avg_count++;
2290             } else {
2291                 /* estimate the A-V difference */
2292                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2293
2294                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2295                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2296                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2297                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2298                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
2299                 }
2300                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2301                         diff, avg_diff, wanted_nb_samples - nb_samples,
2302                         is->audio_clock, is->audio_diff_threshold);
2303             }
2304         } else {
2305             /* too big difference : may be initial PTS errors, so
2306                reset A-V filter */
2307             is->audio_diff_avg_count = 0;
2308             is->audio_diff_cum       = 0;
2309         }
2310     }
2311
2312     return wanted_nb_samples;
2313 }
2314
2315 /**
2316  * Decode one audio frame and return its uncompressed size.
2317  *
2318  * The processed audio frame is decoded, converted if required, and
2319  * stored in is->audio_buf, with size in bytes given by the return
2320  * value.
2321  */
2322 static int audio_decode_frame(VideoState *is)
2323 {
2324     int data_size, resampled_data_size;
2325     int64_t dec_channel_layout;
2326     int got_frame = 0;
2327     av_unused double audio_clock0;
2328     int wanted_nb_samples;
2329     AVRational tb;
2330     int ret;
2331     int reconfigure;
2332
2333     if (!is->frame)
2334         if (!(is->frame = av_frame_alloc()))
2335             return AVERROR(ENOMEM);
2336
2337     for (;;) {
2338         if (is->audioq.serial != is->auddec.pkt_serial)
2339             is->audio_buf_frames_pending = got_frame = 0;
2340
2341         if (!got_frame)
2342             av_frame_unref(is->frame);
2343
2344         if (is->paused)
2345             return -1;
2346
2347         while (is->audio_buf_frames_pending || got_frame) {
2348             if (!is->audio_buf_frames_pending) {
2349                 got_frame = 0;
2350                 tb = (AVRational){1, is->frame->sample_rate};
2351
2352 #if CONFIG_AVFILTER
2353                 dec_channel_layout = get_valid_channel_layout(is->frame->channel_layout, av_frame_get_channels(is->frame));
2354
2355                 reconfigure =
2356                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2357                                    is->frame->format, av_frame_get_channels(is->frame))    ||
2358                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2359                     is->audio_filter_src.freq           != is->frame->sample_rate ||
2360                     is->auddec.pkt_serial               != is->audio_last_serial;
2361
2362                 if (reconfigure) {
2363                     char buf1[1024], buf2[1024];
2364                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2365                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2366                     av_log(NULL, AV_LOG_DEBUG,
2367                            "Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
2368                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, is->audio_last_serial,
2369                            is->frame->sample_rate, av_frame_get_channels(is->frame), av_get_sample_fmt_name(is->frame->format), buf2, is->auddec.pkt_serial);
2370
2371                     is->audio_filter_src.fmt            = is->frame->format;
2372                     is->audio_filter_src.channels       = av_frame_get_channels(is->frame);
2373                     is->audio_filter_src.channel_layout = dec_channel_layout;
2374                     is->audio_filter_src.freq           = is->frame->sample_rate;
2375                     is->audio_last_serial               = is->auddec.pkt_serial;
2376
2377                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2378                         return ret;
2379                 }
2380
2381                 if ((ret = av_buffersrc_add_frame(is->in_audio_filter, is->frame)) < 0)
2382                     return ret;
2383 #endif
2384             }
2385 #if CONFIG_AVFILTER
2386             if ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, is->frame, 0)) < 0) {
2387                 if (ret == AVERROR(EAGAIN)) {
2388                     is->audio_buf_frames_pending = 0;
2389                     continue;
2390                 }
2391                 if (ret == AVERROR_EOF)
2392                     is->auddec.finished = is->auddec.pkt_serial;
2393                 return ret;
2394             }
2395             is->audio_buf_frames_pending = 1;
2396             tb = is->out_audio_filter->inputs[0]->time_base;
2397 #endif
2398
2399             data_size = av_samples_get_buffer_size(NULL, av_frame_get_channels(is->frame),
2400                                                    is->frame->nb_samples,
2401                                                    is->frame->format, 1);
2402
2403             dec_channel_layout =
2404                 (is->frame->channel_layout && av_frame_get_channels(is->frame) == av_get_channel_layout_nb_channels(is->frame->channel_layout)) ?
2405                 is->frame->channel_layout : av_get_default_channel_layout(av_frame_get_channels(is->frame));
2406             wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
2407
2408             if (is->frame->format        != is->audio_src.fmt            ||
2409                 dec_channel_layout       != is->audio_src.channel_layout ||
2410                 is->frame->sample_rate   != is->audio_src.freq           ||
2411                 (wanted_nb_samples       != is->frame->nb_samples && !is->swr_ctx)) {
2412                 swr_free(&is->swr_ctx);
2413                 is->swr_ctx = swr_alloc_set_opts(NULL,
2414                                                  is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2415                                                  dec_channel_layout,           is->frame->format, is->frame->sample_rate,
2416                                                  0, NULL);
2417                 if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2418                     av_log(NULL, AV_LOG_ERROR,
2419                            "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2420                             is->frame->sample_rate, av_get_sample_fmt_name(is->frame->format), av_frame_get_channels(is->frame),
2421                             is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2422                     break;
2423                 }
2424                 is->audio_src.channel_layout = dec_channel_layout;
2425                 is->audio_src.channels       = av_frame_get_channels(is->frame);
2426                 is->audio_src.freq = is->frame->sample_rate;
2427                 is->audio_src.fmt = is->frame->format;
2428             }
2429
2430             if (is->swr_ctx) {
2431                 const uint8_t **in = (const uint8_t **)is->frame->extended_data;
2432                 uint8_t **out = &is->audio_buf1;
2433                 int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate + 256;
2434                 int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2435                 int len2;
2436                 if (out_size < 0) {
2437                     av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2438                     break;
2439                 }
2440                 if (wanted_nb_samples != is->frame->nb_samples) {
2441                     if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / is->frame->sample_rate,
2442                                                 wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate) < 0) {
2443                         av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2444                         break;
2445                     }
2446                 }
2447                 av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2448                 if (!is->audio_buf1)
2449                     return AVERROR(ENOMEM);
2450                 len2 = swr_convert(is->swr_ctx, out, out_count, in, is->frame->nb_samples);
2451                 if (len2 < 0) {
2452                     av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2453                     break;
2454                 }
2455                 if (len2 == out_count) {
2456                     av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2457                     swr_init(is->swr_ctx);
2458                 }
2459                 is->audio_buf = is->audio_buf1;
2460                 resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2461             } else {
2462                 is->audio_buf = is->frame->data[0];
2463                 resampled_data_size = data_size;
2464             }
2465
2466             audio_clock0 = is->audio_clock;
2467             /* update the audio clock with the pts */
2468             if (is->frame->pts != AV_NOPTS_VALUE)
2469                 is->audio_clock = is->frame->pts * av_q2d(tb) + (double) is->frame->nb_samples / is->frame->sample_rate;
2470             else
2471                 is->audio_clock = NAN;
2472             is->audio_clock_serial = is->auddec.pkt_serial;
2473 #ifdef DEBUG
2474             {
2475                 static double last_clock;
2476                 printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2477                        is->audio_clock - last_clock,
2478                        is->audio_clock, audio_clock0);
2479                 last_clock = is->audio_clock;
2480             }
2481 #endif
2482             return resampled_data_size;
2483         }
2484
2485         if ((got_frame = decoder_decode_frame(&is->auddec, is->frame, NULL)) < 0)
2486             return -1;
2487
2488         if (is->auddec.flushed)
2489             is->audio_buf_frames_pending = 0;
2490     }
2491 }
2492
2493 /* prepare a new audio buffer */
2494 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2495 {
2496     VideoState *is = opaque;
2497     int audio_size, len1;
2498
2499     audio_callback_time = av_gettime_relative();
2500
2501     while (len > 0) {
2502         if (is->audio_buf_index >= is->audio_buf_size) {
2503            audio_size = audio_decode_frame(is);
2504            if (audio_size < 0) {
2505                 /* if error, just output silence */
2506                is->audio_buf      = is->silence_buf;
2507                is->audio_buf_size = sizeof(is->silence_buf) / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2508            } else {
2509                if (is->show_mode != SHOW_MODE_VIDEO)
2510                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2511                is->audio_buf_size = audio_size;
2512            }
2513            is->audio_buf_index = 0;
2514         }
2515         len1 = is->audio_buf_size - is->audio_buf_index;
2516         if (len1 > len)
2517             len1 = len;
2518         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2519         len -= len1;
2520         stream += len1;
2521         is->audio_buf_index += len1;
2522     }
2523     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2524     /* Let's assume the audio driver that is used by SDL has two periods. */
2525     if (!isnan(is->audio_clock)) {
2526         set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / is->audio_tgt.bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
2527         sync_clock_to_slave(&is->extclk, &is->audclk);
2528     }
2529 }
2530
2531 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2532 {
2533     SDL_AudioSpec wanted_spec, spec;
2534     const char *env;
2535     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2536     static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2537     int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2538
2539     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2540     if (env) {
2541         wanted_nb_channels = atoi(env);
2542         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2543     }
2544     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2545         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2546         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2547     }
2548     wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2549     wanted_spec.channels = wanted_nb_channels;
2550     wanted_spec.freq = wanted_sample_rate;
2551     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2552         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2553         return -1;
2554     }
2555     while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2556         next_sample_rate_idx--;
2557     wanted_spec.format = AUDIO_S16SYS;
2558     wanted_spec.silence = 0;
2559     wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
2560     wanted_spec.callback = sdl_audio_callback;
2561     wanted_spec.userdata = opaque;
2562     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2563         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2564                wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2565         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2566         if (!wanted_spec.channels) {
2567             wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2568             wanted_spec.channels = wanted_nb_channels;
2569             if (!wanted_spec.freq) {
2570                 av_log(NULL, AV_LOG_ERROR,
2571                        "No more combinations to try, audio open failed\n");
2572                 return -1;
2573             }
2574         }
2575         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2576     }
2577     if (spec.format != AUDIO_S16SYS) {
2578         av_log(NULL, AV_LOG_ERROR,
2579                "SDL advised audio format %d is not supported!\n", spec.format);
2580         return -1;
2581     }
2582     if (spec.channels != wanted_spec.channels) {
2583         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2584         if (!wanted_channel_layout) {
2585             av_log(NULL, AV_LOG_ERROR,
2586                    "SDL advised channel count %d is not supported!\n", spec.channels);
2587             return -1;
2588         }
2589     }
2590
2591     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2592     audio_hw_params->freq = spec.freq;
2593     audio_hw_params->channel_layout = wanted_channel_layout;
2594     audio_hw_params->channels =  spec.channels;
2595     audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2596     audio_hw_params->bytes_per_sec = av_samples_get_buffer_size(NULL, audio_hw_params->channels, audio_hw_params->freq, audio_hw_params->fmt, 1);
2597     if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2598         av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2599         return -1;
2600     }
2601     return spec.size;
2602 }
2603
2604 /* open a given stream. Return 0 if OK */
2605 static int stream_component_open(VideoState *is, int stream_index)
2606 {
2607     AVFormatContext *ic = is->ic;
2608     AVCodecContext *avctx;
2609     AVCodec *codec;
2610     const char *forced_codec_name = NULL;
2611     AVDictionary *opts;
2612     AVDictionaryEntry *t = NULL;
2613     int sample_rate, nb_channels;
2614     int64_t channel_layout;
2615     int ret;
2616     int stream_lowres = lowres;
2617
2618     if (stream_index < 0 || stream_index >= ic->nb_streams)
2619         return -1;
2620     avctx = ic->streams[stream_index]->codec;
2621
2622     codec = avcodec_find_decoder(avctx->codec_id);
2623
2624     switch(avctx->codec_type){
2625         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2626         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2627         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2628     }
2629     if (forced_codec_name)
2630         codec = avcodec_find_decoder_by_name(forced_codec_name);
2631     if (!codec) {
2632         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2633                                       "No codec could be found with name '%s'\n", forced_codec_name);
2634         else                   av_log(NULL, AV_LOG_WARNING,
2635                                       "No codec could be found with id %d\n", avctx->codec_id);
2636         return -1;
2637     }
2638
2639     avctx->codec_id = codec->id;
2640     avctx->workaround_bugs   = workaround_bugs;
2641     if(stream_lowres > av_codec_get_max_lowres(codec)){
2642         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2643                 av_codec_get_max_lowres(codec));
2644         stream_lowres = av_codec_get_max_lowres(codec);
2645     }
2646     av_codec_set_lowres(avctx, stream_lowres);
2647
2648     if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2649     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2650     if(codec->capabilities & CODEC_CAP_DR1)
2651         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2652
2653     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2654     if (!av_dict_get(opts, "threads", NULL, 0))
2655         av_dict_set(&opts, "threads", "auto", 0);
2656     if (stream_lowres)
2657         av_dict_set_int(&opts, "lowres", stream_lowres, 0);
2658     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2659         av_dict_set(&opts, "refcounted_frames", "1", 0);
2660     if (avcodec_open2(avctx, codec, &opts) < 0)
2661         return -1;
2662     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2663         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2664         return AVERROR_OPTION_NOT_FOUND;
2665     }
2666
2667     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2668     switch (avctx->codec_type) {
2669     case AVMEDIA_TYPE_AUDIO:
2670 #if CONFIG_AVFILTER
2671         {
2672             AVFilterLink *link;
2673
2674             is->audio_filter_src.freq           = avctx->sample_rate;
2675             is->audio_filter_src.channels       = avctx->channels;
2676             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2677             is->audio_filter_src.fmt            = avctx->sample_fmt;
2678             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2679                 return ret;
2680             link = is->out_audio_filter->inputs[0];
2681             sample_rate    = link->sample_rate;
2682             nb_channels    = link->channels;
2683             channel_layout = link->channel_layout;
2684         }
2685 #else
2686         sample_rate    = avctx->sample_rate;
2687         nb_channels    = avctx->channels;
2688         channel_layout = avctx->channel_layout;
2689 #endif
2690
2691         /* prepare audio output */
2692         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2693             return ret;
2694         is->audio_hw_buf_size = ret;
2695         is->audio_src = is->audio_tgt;
2696         is->audio_buf_size  = 0;
2697         is->audio_buf_index = 0;
2698
2699         /* init averaging filter */
2700         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2701         is->audio_diff_avg_count = 0;
2702         /* since we do not have a precise anough audio fifo fullness,
2703            we correct audio sync only if larger than this threshold */
2704         is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
2705
2706         is->audio_stream = stream_index;
2707         is->audio_st = ic->streams[stream_index];
2708
2709         packet_queue_start(&is->audioq);
2710         decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread);
2711         if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
2712             is->auddec.start_pts = is->audio_st->start_time;
2713             is->auddec.start_pts_tb = is->audio_st->time_base;
2714         }
2715         SDL_PauseAudio(0);
2716         break;
2717     case AVMEDIA_TYPE_VIDEO:
2718         is->video_stream = stream_index;
2719         is->video_st = ic->streams[stream_index];
2720
2721         packet_queue_start(&is->videoq);
2722         decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread);
2723         is->video_tid = SDL_CreateThread(video_thread, is);
2724         is->queue_attachments_req = 1;
2725         break;
2726     case AVMEDIA_TYPE_SUBTITLE:
2727         is->subtitle_stream = stream_index;
2728         is->subtitle_st = ic->streams[stream_index];
2729
2730         packet_queue_start(&is->subtitleq);
2731         decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread);
2732         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2733         break;
2734     default:
2735         break;
2736     }
2737     return 0;
2738 }
2739
2740 static void stream_component_close(VideoState *is, int stream_index)
2741 {
2742     AVFormatContext *ic = is->ic;
2743     AVCodecContext *avctx;
2744
2745     if (stream_index < 0 || stream_index >= ic->nb_streams)
2746         return;
2747     avctx = ic->streams[stream_index]->codec;
2748
2749     switch (avctx->codec_type) {
2750     case AVMEDIA_TYPE_AUDIO:
2751         packet_queue_abort(&is->audioq);
2752
2753         SDL_CloseAudio();
2754
2755         decoder_destroy(&is->auddec);
2756         packet_queue_flush(&is->audioq);
2757         swr_free(&is->swr_ctx);
2758         av_freep(&is->audio_buf1);
2759         is->audio_buf1_size = 0;
2760         is->audio_buf = NULL;
2761         av_frame_free(&is->frame);
2762
2763         if (is->rdft) {
2764             av_rdft_end(is->rdft);
2765             av_freep(&is->rdft_data);
2766             is->rdft = NULL;
2767             is->rdft_bits = 0;
2768         }
2769 #if CONFIG_AVFILTER
2770         avfilter_graph_free(&is->agraph);
2771 #endif
2772         break;
2773     case AVMEDIA_TYPE_VIDEO:
2774         packet_queue_abort(&is->videoq);
2775
2776         /* note: we also signal this mutex to make sure we deblock the
2777            video thread in all cases */
2778         frame_queue_signal(&is->pictq);
2779
2780         SDL_WaitThread(is->video_tid, NULL);
2781
2782         decoder_destroy(&is->viddec);
2783         packet_queue_flush(&is->videoq);
2784         break;
2785     case AVMEDIA_TYPE_SUBTITLE:
2786         packet_queue_abort(&is->subtitleq);
2787
2788         /* note: we also signal this mutex to make sure we deblock the
2789            video thread in all cases */
2790         frame_queue_signal(&is->subpq);
2791
2792         SDL_WaitThread(is->subtitle_tid, NULL);
2793
2794         decoder_destroy(&is->subdec);
2795         packet_queue_flush(&is->subtitleq);
2796         break;
2797     default:
2798         break;
2799     }
2800
2801     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2802     avcodec_close(avctx);
2803     switch (avctx->codec_type) {
2804     case AVMEDIA_TYPE_AUDIO:
2805         is->audio_st = NULL;
2806         is->audio_stream = -1;
2807         break;
2808     case AVMEDIA_TYPE_VIDEO:
2809         is->video_st = NULL;
2810         is->video_stream = -1;
2811         break;
2812     case AVMEDIA_TYPE_SUBTITLE:
2813         is->subtitle_st = NULL;
2814         is->subtitle_stream = -1;
2815         break;
2816     default:
2817         break;
2818     }
2819 }
2820
2821 static int decode_interrupt_cb(void *ctx)
2822 {
2823     VideoState *is = ctx;
2824     return is->abort_request;
2825 }
2826
2827 static int is_realtime(AVFormatContext *s)
2828 {
2829     if(   !strcmp(s->iformat->name, "rtp")
2830        || !strcmp(s->iformat->name, "rtsp")
2831        || !strcmp(s->iformat->name, "sdp")
2832     )
2833         return 1;
2834
2835     if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
2836                  || !strncmp(s->filename, "udp:", 4)
2837                 )
2838     )
2839         return 1;
2840     return 0;
2841 }
2842
2843 /* this thread gets the stream from the disk or the network */
2844 static int read_thread(void *arg)
2845 {
2846     VideoState *is = arg;
2847     AVFormatContext *ic = NULL;
2848     int err, i, ret;
2849     int st_index[AVMEDIA_TYPE_NB];
2850     AVPacket pkt1, *pkt = &pkt1;
2851     int eof = 0;
2852     int64_t stream_start_time;
2853     int pkt_in_play_range = 0;
2854     AVDictionaryEntry *t;
2855     AVDictionary **opts;
2856     int orig_nb_streams;
2857     SDL_mutex *wait_mutex = SDL_CreateMutex();
2858
2859     memset(st_index, -1, sizeof(st_index));
2860     is->last_video_stream = is->video_stream = -1;
2861     is->last_audio_stream = is->audio_stream = -1;
2862     is->last_subtitle_stream = is->subtitle_stream = -1;
2863
2864     ic = avformat_alloc_context();
2865     ic->interrupt_callback.callback = decode_interrupt_cb;
2866     ic->interrupt_callback.opaque = is;
2867     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2868     if (err < 0) {
2869         print_error(is->filename, err);
2870         ret = -1;
2871         goto fail;
2872     }
2873     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2874         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2875         ret = AVERROR_OPTION_NOT_FOUND;
2876         goto fail;
2877     }
2878     is->ic = ic;
2879
2880     if (genpts)
2881         ic->flags |= AVFMT_FLAG_GENPTS;
2882
2883     av_format_inject_global_side_data(ic);
2884
2885     opts = setup_find_stream_info_opts(ic, codec_opts);
2886     orig_nb_streams = ic->nb_streams;
2887
2888     err = avformat_find_stream_info(ic, opts);
2889     if (err < 0) {
2890         av_log(NULL, AV_LOG_WARNING,
2891                "%s: could not find codec parameters\n", is->filename);
2892         ret = -1;
2893         goto fail;
2894     }
2895     for (i = 0; i < orig_nb_streams; i++)
2896         av_dict_free(&opts[i]);
2897     av_freep(&opts);
2898
2899     if (ic->pb)
2900         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
2901
2902     if (seek_by_bytes < 0)
2903         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2904
2905     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2906
2907     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2908         window_title = av_asprintf("%s - %s", t->value, input_filename);
2909
2910     /* if seeking requested, we execute it */
2911     if (start_time != AV_NOPTS_VALUE) {
2912         int64_t timestamp;
2913
2914         timestamp = start_time;
2915         /* add the stream start time */
2916         if (ic->start_time != AV_NOPTS_VALUE)
2917             timestamp += ic->start_time;
2918         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2919         if (ret < 0) {
2920             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2921                     is->filename, (double)timestamp / AV_TIME_BASE);
2922         }
2923     }
2924
2925     is->realtime = is_realtime(ic);
2926
2927     for (i = 0; i < ic->nb_streams; i++)
2928         ic->streams[i]->discard = AVDISCARD_ALL;
2929     if (!video_disable)
2930         st_index[AVMEDIA_TYPE_VIDEO] =
2931             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2932                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2933     if (!audio_disable)
2934         st_index[AVMEDIA_TYPE_AUDIO] =
2935             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2936                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2937                                 st_index[AVMEDIA_TYPE_VIDEO],
2938                                 NULL, 0);
2939     if (!video_disable && !subtitle_disable)
2940         st_index[AVMEDIA_TYPE_SUBTITLE] =
2941             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2942                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2943                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2944                                  st_index[AVMEDIA_TYPE_AUDIO] :
2945                                  st_index[AVMEDIA_TYPE_VIDEO]),
2946                                 NULL, 0);
2947     if (show_status) {
2948         av_dump_format(ic, 0, is->filename, 0);
2949     }
2950
2951     is->show_mode = show_mode;
2952     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2953         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
2954         AVCodecContext *avctx = st->codec;
2955         AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
2956         if (avctx->width)
2957             set_default_window_size(avctx->width, avctx->height, sar);
2958     }
2959
2960     /* open the streams */
2961     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2962         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2963     }
2964
2965     ret = -1;
2966     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2967         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2968     }
2969     if (is->show_mode == SHOW_MODE_NONE)
2970         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2971
2972     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2973         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2974     }
2975
2976     if (is->video_stream < 0 && is->audio_stream < 0) {
2977         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
2978                is->filename);
2979         ret = -1;
2980         goto fail;
2981     }
2982
2983     if (infinite_buffer < 0 && is->realtime)
2984         infinite_buffer = 1;
2985
2986     for (;;) {
2987         if (is->abort_request)
2988             break;
2989         if (is->paused != is->last_paused) {
2990             is->last_paused = is->paused;
2991             if (is->paused)
2992                 is->read_pause_return = av_read_pause(ic);
2993             else
2994                 av_read_play(ic);
2995         }
2996 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2997         if (is->paused &&
2998                 (!strcmp(ic->iformat->name, "rtsp") ||
2999                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
3000             /* wait 10 ms to avoid trying to get another packet */
3001             /* XXX: horrible */
3002             SDL_Delay(10);
3003             continue;
3004         }
3005 #endif
3006         if (is->seek_req) {
3007             int64_t seek_target = is->seek_pos;
3008             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
3009             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
3010 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
3011 //      of the seek_pos/seek_rel variables
3012
3013             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
3014             if (ret < 0) {
3015                 av_log(NULL, AV_LOG_ERROR,
3016                        "%s: error while seeking\n", is->ic->filename);
3017             } else {
3018                 if (is->audio_stream >= 0) {
3019                     packet_queue_flush(&is->audioq);
3020                     packet_queue_put(&is->audioq, &flush_pkt);
3021                 }
3022                 if (is->subtitle_stream >= 0) {
3023                     packet_queue_flush(&is->subtitleq);
3024                     packet_queue_put(&is->subtitleq, &flush_pkt);
3025                 }
3026                 if (is->video_stream >= 0) {
3027                     packet_queue_flush(&is->videoq);
3028                     packet_queue_put(&is->videoq, &flush_pkt);
3029                 }
3030                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
3031                    set_clock(&is->extclk, NAN, 0);
3032                 } else {
3033                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
3034                 }
3035             }
3036             is->seek_req = 0;
3037             is->queue_attachments_req = 1;
3038             eof = 0;
3039             if (is->paused)
3040                 step_to_next_frame(is);
3041         }
3042         if (is->queue_attachments_req) {
3043             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
3044                 AVPacket copy;
3045                 if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
3046                     goto fail;
3047                 packet_queue_put(&is->videoq, &copy);
3048                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3049             }
3050             is->queue_attachments_req = 0;
3051         }
3052
3053         /* if the queue are full, no need to read more */
3054         if (infinite_buffer<1 &&
3055               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
3056             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
3057                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request
3058                     || (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC))
3059                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
3060             /* wait 10 ms */
3061             SDL_LockMutex(wait_mutex);
3062             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3063             SDL_UnlockMutex(wait_mutex);
3064             continue;
3065         }
3066         if (!is->paused &&
3067             (!is->audio_st || is->auddec.finished == is->audioq.serial) &&
3068             (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
3069             if (loop != 1 && (!loop || --loop)) {
3070                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
3071             } else if (autoexit) {
3072                 ret = AVERROR_EOF;
3073                 goto fail;
3074             }
3075         }
3076         if (eof) {
3077             if (is->video_stream >= 0)
3078                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
3079             if (is->audio_stream >= 0)
3080                 packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
3081             if (is->subtitle_stream >= 0)
3082                 packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
3083             SDL_Delay(10);
3084             eof=0;
3085             continue;
3086         }
3087         ret = av_read_frame(ic, pkt);
3088         if (ret < 0) {
3089             if (ret == AVERROR_EOF || avio_feof(ic->pb))
3090                 eof = 1;
3091             if (ic->pb && ic->pb->error)
3092                 break;
3093             SDL_LockMutex(wait_mutex);
3094             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3095             SDL_UnlockMutex(wait_mutex);
3096             continue;
3097         }
3098         /* check if packet is in play range specified by user, then queue, otherwise discard */
3099         stream_start_time = ic->streams[pkt->stream_index]->start_time;
3100         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
3101                 (pkt->pts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
3102                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
3103                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
3104                 <= ((double)duration / 1000000);
3105         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
3106             packet_queue_put(&is->audioq, pkt);
3107         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
3108                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
3109             packet_queue_put(&is->videoq, pkt);
3110         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
3111             packet_queue_put(&is->subtitleq, pkt);
3112         } else {
3113             av_free_packet(pkt);
3114         }
3115     }
3116     /* wait until the end */
3117     while (!is->abort_request) {
3118         SDL_Delay(100);
3119     }
3120
3121     ret = 0;
3122  fail:
3123     /* close each stream */
3124     if (is->audio_stream >= 0)
3125         stream_component_close(is, is->audio_stream);
3126     if (is->video_stream >= 0)
3127         stream_component_close(is, is->video_stream);
3128     if (is->subtitle_stream >= 0)
3129         stream_component_close(is, is->subtitle_stream);
3130     if (is->ic) {
3131         avformat_close_input(&is->ic);
3132     }
3133
3134     if (ret != 0) {
3135         SDL_Event event;
3136
3137         event.type = FF_QUIT_EVENT;
3138         event.user.data1 = is;
3139         SDL_PushEvent(&event);
3140     }
3141     SDL_DestroyMutex(wait_mutex);
3142     return 0;
3143 }
3144
3145 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3146 {
3147     VideoState *is;
3148
3149     is = av_mallocz(sizeof(VideoState));
3150     if (!is)
3151         return NULL;
3152     av_strlcpy(is->filename, filename, sizeof(is->filename));
3153     is->iformat = iformat;
3154     is->ytop    = 0;
3155     is->xleft   = 0;
3156
3157     /* start video display */
3158     if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
3159         goto fail;
3160     if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
3161         goto fail;
3162
3163     packet_queue_init(&is->videoq);
3164     packet_queue_init(&is->audioq);
3165     packet_queue_init(&is->subtitleq);
3166
3167     is->continue_read_thread = SDL_CreateCond();
3168
3169     init_clock(&is->vidclk, &is->videoq.serial);
3170     init_clock(&is->audclk, &is->audioq.serial);
3171     init_clock(&is->extclk, &is->extclk.serial);
3172     is->audio_clock_serial = -1;
3173     is->audio_last_serial = -1;
3174     is->av_sync_type = av_sync_type;
3175     is->read_tid     = SDL_CreateThread(read_thread, is);
3176     if (!is->read_tid) {
3177 fail:
3178         stream_close(is);
3179         return NULL;
3180     }
3181     return is;
3182 }
3183
3184 static void stream_cycle_channel(VideoState *is, int codec_type)
3185 {
3186     AVFormatContext *ic = is->ic;
3187     int start_index, stream_index;
3188     int old_index;
3189     AVStream *st;
3190     AVProgram *p = NULL;
3191     int nb_streams = is->ic->nb_streams;
3192
3193     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3194         start_index = is->last_video_stream;
3195         old_index = is->video_stream;
3196     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3197         start_index = is->last_audio_stream;
3198         old_index = is->audio_stream;
3199     } else {
3200         start_index = is->last_subtitle_stream;
3201         old_index = is->subtitle_stream;
3202     }
3203     stream_index = start_index;
3204
3205     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3206         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3207         if (p) {
3208             nb_streams = p->nb_stream_indexes;
3209             for (start_index = 0; start_index < nb_streams; start_index++)
3210                 if (p->stream_index[start_index] == stream_index)
3211                     break;
3212             if (start_index == nb_streams)
3213                 start_index = -1;
3214             stream_index = start_index;
3215         }
3216     }
3217
3218     for (;;) {
3219         if (++stream_index >= nb_streams)
3220         {
3221             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3222             {
3223                 stream_index = -1;
3224                 is->last_subtitle_stream = -1;
3225                 goto the_end;
3226             }
3227             if (start_index == -1)
3228                 return;
3229             stream_index = 0;
3230         }
3231         if (stream_index == start_index)
3232             return;
3233         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3234         if (st->codec->codec_type == codec_type) {
3235             /* check that parameters are OK */
3236             switch (codec_type) {
3237             case AVMEDIA_TYPE_AUDIO:
3238                 if (st->codec->sample_rate != 0 &&
3239                     st->codec->channels != 0)
3240                     goto the_end;
3241                 break;
3242             case AVMEDIA_TYPE_VIDEO:
3243             case AVMEDIA_TYPE_SUBTITLE:
3244                 goto the_end;
3245             default:
3246                 break;
3247             }
3248         }
3249     }
3250  the_end:
3251     if (p && stream_index != -1)
3252         stream_index = p->stream_index[stream_index];
3253     av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3254            av_get_media_type_string(codec_type),
3255            old_index,
3256            stream_index);
3257
3258     stream_component_close(is, old_index);
3259     stream_component_open(is, stream_index);
3260 }
3261
3262
3263 static void toggle_full_screen(VideoState *is)
3264 {
3265 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
3266     /* OS X needs to reallocate the SDL overlays */
3267     int i;
3268     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
3269         is->pictq.queue[i].reallocate = 1;
3270 #endif
3271     is_full_screen = !is_full_screen;
3272     video_open(is, 1, NULL);
3273 }
3274
3275 static void toggle_audio_display(VideoState *is)
3276 {
3277     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
3278     int next = is->show_mode;
3279     do {
3280         next = (next + 1) % SHOW_MODE_NB;
3281     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3282     if (is->show_mode != next) {
3283         fill_rectangle(screen,
3284                     is->xleft, is->ytop, is->width, is->height,
3285                     bgcolor, 1);
3286         is->force_refresh = 1;
3287         is->show_mode = next;
3288     }
3289 }
3290
3291 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3292     double remaining_time = 0.0;
3293     SDL_PumpEvents();
3294     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS)) {
3295         if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3296             SDL_ShowCursor(0);
3297             cursor_hidden = 1;
3298         }
3299         if (remaining_time > 0.0)
3300             av_usleep((int64_t)(remaining_time * 1000000.0));
3301         remaining_time = REFRESH_RATE;
3302         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3303             video_refresh(is, &remaining_time);
3304         SDL_PumpEvents();
3305     }
3306 }
3307
3308 static void seek_chapter(VideoState *is, int incr)
3309 {
3310     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3311     int i;
3312
3313     if (!is->ic->nb_chapters)
3314         return;
3315
3316     /* find the current chapter */
3317     for (i = 0; i < is->ic->nb_chapters; i++) {
3318         AVChapter *ch = is->ic->chapters[i];
3319         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3320             i--;
3321             break;
3322         }
3323     }
3324
3325     i += incr;
3326     i = FFMAX(i, 0);
3327     if (i >= is->ic->nb_chapters)
3328         return;
3329
3330     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3331     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3332                                  AV_TIME_BASE_Q), 0, 0);
3333 }
3334
3335 /* handle an event sent by the GUI */
3336 static void event_loop(VideoState *cur_stream)
3337 {
3338     SDL_Event event;
3339     double incr, pos, frac;
3340
3341     for (;;) {
3342         double x;
3343         refresh_loop_wait_event(cur_stream, &event);
3344         switch (event.type) {
3345         case SDL_KEYDOWN:
3346             if (exit_on_keydown) {
3347                 do_exit(cur_stream);
3348                 break;
3349             }
3350             switch (event.key.keysym.sym) {
3351             case SDLK_ESCAPE:
3352             case SDLK_q:
3353                 do_exit(cur_stream);
3354                 break;
3355             case SDLK_f:
3356                 toggle_full_screen(cur_stream);
3357                 cur_stream->force_refresh = 1;
3358                 break;
3359             case SDLK_p:
3360             case SDLK_SPACE:
3361                 toggle_pause(cur_stream);
3362                 break;
3363             case SDLK_s: // S: Step to next frame
3364                 step_to_next_frame(cur_stream);
3365                 break;
3366             case SDLK_a:
3367                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3368                 break;
3369             case SDLK_v:
3370                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3371                 break;
3372             case SDLK_c:
3373                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3374                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3375                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3376                 break;
3377             case SDLK_t:
3378                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3379                 break;
3380             case SDLK_w:
3381 #if CONFIG_AVFILTER
3382                 if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3383                     if (++cur_stream->vfilter_idx >= nb_vfilters)
3384                         cur_stream->vfilter_idx = 0;
3385                 } else {
3386                     cur_stream->vfilter_idx = 0;
3387                     toggle_audio_display(cur_stream);
3388                 }
3389 #else
3390                 toggle_audio_display(cur_stream);
3391 #endif
3392                 break;
3393             case SDLK_PAGEUP:
3394                 if (cur_stream->ic->nb_chapters <= 1) {
3395                     incr = 600.0;
3396                     goto do_seek;
3397                 }
3398                 seek_chapter(cur_stream, 1);
3399                 break;
3400             case SDLK_PAGEDOWN:
3401                 if (cur_stream->ic->nb_chapters <= 1) {
3402                     incr = -600.0;
3403                     goto do_seek;
3404                 }
3405                 seek_chapter(cur_stream, -1);
3406                 break;
3407             case SDLK_LEFT:
3408                 incr = -10.0;
3409                 goto do_seek;
3410             case SDLK_RIGHT:
3411                 incr = 10.0;
3412                 goto do_seek;
3413             case SDLK_UP:
3414                 incr = 60.0;
3415                 goto do_seek;
3416             case SDLK_DOWN:
3417                 incr = -60.0;
3418             do_seek:
3419                     if (seek_by_bytes) {
3420                         pos = -1;
3421                         if (pos < 0 && cur_stream->video_stream >= 0)
3422                             pos = frame_queue_last_pos(&cur_stream->pictq);
3423                         if (pos < 0 && cur_stream->audio_stream >= 0 && cur_stream->frame)
3424                             pos = av_frame_get_pkt_pos(cur_stream->frame);
3425                         if (pos < 0)
3426                             pos = avio_tell(cur_stream->ic->pb);
3427                         if (cur_stream->ic->bit_rate)
3428                             incr *= cur_stream->ic->bit_rate / 8.0;
3429                         else
3430                             incr *= 180000.0;
3431                         pos += incr;
3432                         stream_seek(cur_stream, pos, incr, 1);
3433                     } else {
3434                         pos = get_master_clock(cur_stream);
3435                         if (isnan(pos))
3436                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3437                         pos += incr;
3438                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3439                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3440                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3441                     }
3442                 break;
3443             default:
3444                 break;
3445             }
3446             break;
3447         case SDL_VIDEOEXPOSE:
3448             cur_stream->force_refresh = 1;
3449             break;
3450         case SDL_MOUSEBUTTONDOWN:
3451             if (exit_on_mousedown) {
3452                 do_exit(cur_stream);
3453                 break;
3454             }
3455         case SDL_MOUSEMOTION:
3456             if (cursor_hidden) {
3457                 SDL_ShowCursor(1);
3458                 cursor_hidden = 0;
3459             }
3460             cursor_last_shown = av_gettime_relative();
3461             if (event.type == SDL_MOUSEBUTTONDOWN) {
3462                 x = event.button.x;
3463             } else {
3464                 if (event.motion.state != SDL_PRESSED)
3465                     break;
3466                 x = event.motion.x;
3467             }
3468                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3469                     uint64_t size =  avio_size(cur_stream->ic->pb);
3470                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3471                 } else {
3472                     int64_t ts;
3473                     int ns, hh, mm, ss;
3474                     int tns, thh, tmm, tss;
3475                     tns  = cur_stream->ic->duration / 1000000LL;
3476                     thh  = tns / 3600;
3477                     tmm  = (tns % 3600) / 60;
3478                     tss  = (tns % 60);
3479                     frac = x / cur_stream->width;
3480                     ns   = frac * tns;
3481                     hh   = ns / 3600;
3482                     mm   = (ns % 3600) / 60;
3483                     ss   = (ns % 60);
3484                     av_log(NULL, AV_LOG_INFO,
3485                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3486                             hh, mm, ss, thh, tmm, tss);
3487                     ts = frac * cur_stream->ic->duration;
3488                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3489                         ts += cur_stream->ic->start_time;
3490                     stream_seek(cur_stream, ts, 0, 0);
3491                 }
3492             break;
3493         case SDL_VIDEORESIZE:
3494                 screen = SDL_SetVideoMode(FFMIN(16383, event.resize.w), event.resize.h, 0,
3495                                           SDL_HWSURFACE|(is_full_screen?SDL_FULLSCREEN:SDL_RESIZABLE)|SDL_ASYNCBLIT|SDL_HWACCEL);
3496                 if (!screen) {
3497                     av_log(NULL, AV_LOG_FATAL, "Failed to set video mode\n");
3498                     do_exit(cur_stream);
3499                 }
3500                 screen_width  = cur_stream->width  = screen->w;
3501                 screen_height = cur_stream->height = screen->h;
3502                 cur_stream->force_refresh = 1;
3503             break;
3504         case SDL_QUIT:
3505         case FF_QUIT_EVENT:
3506             do_exit(cur_stream);
3507             break;
3508         case FF_ALLOC_EVENT:
3509             alloc_picture(event.user.data1);
3510             break;
3511         default:
3512             break;
3513         }
3514     }
3515 }
3516
3517 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3518 {
3519     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3520     return opt_default(NULL, "video_size", arg);
3521 }
3522
3523 static int opt_width(void *optctx, const char *opt, const char *arg)
3524 {
3525     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3526     return 0;
3527 }
3528
3529 static int opt_height(void *optctx, const char *opt, const char *arg)
3530 {
3531     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3532     return 0;
3533 }
3534
3535 static int opt_format(void *optctx, const char *opt, const char *arg)
3536 {
3537     file_iformat = av_find_input_format(arg);
3538     if (!file_iformat) {
3539         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3540         return AVERROR(EINVAL);
3541     }
3542     return 0;
3543 }
3544
3545 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3546 {
3547     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3548     return opt_default(NULL, "pixel_format", arg);
3549 }
3550
3551 static int opt_sync(void *optctx, const char *opt, const char *arg)
3552 {
3553     if (!strcmp(arg, "audio"))
3554         av_sync_type = AV_SYNC_AUDIO_MASTER;
3555     else if (!strcmp(arg, "video"))
3556         av_sync_type = AV_SYNC_VIDEO_MASTER;
3557     else if (!strcmp(arg, "ext"))
3558         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3559     else {
3560         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3561         exit(1);
3562     }
3563     return 0;
3564 }
3565
3566 static int opt_seek(void *optctx, const char *opt, const char *arg)
3567 {
3568     start_time = parse_time_or_die(opt, arg, 1);
3569     return 0;
3570 }
3571
3572 static int opt_duration(void *optctx, const char *opt, const char *arg)
3573 {
3574     duration = parse_time_or_die(opt, arg, 1);
3575     return 0;
3576 }
3577
3578 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3579 {
3580     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3581                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3582                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3583                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3584     return 0;
3585 }
3586
3587 static void opt_input_file(void *optctx, const char *filename)
3588 {
3589     if (input_filename) {
3590         av_log(NULL, AV_LOG_FATAL,
3591                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3592                 filename, input_filename);
3593         exit(1);
3594     }
3595     if (!strcmp(filename, "-"))
3596         filename = "pipe:";
3597     input_filename = filename;
3598 }
3599
3600 static int opt_codec(void *optctx, const char *opt, const char *arg)
3601 {
3602    const char *spec = strchr(opt, ':');
3603    if (!spec) {
3604        av_log(NULL, AV_LOG_ERROR,
3605               "No media specifier was specified in '%s' in option '%s'\n",
3606                arg, opt);
3607        return AVERROR(EINVAL);
3608    }
3609    spec++;
3610    switch (spec[0]) {
3611    case 'a' :    audio_codec_name = arg; break;
3612    case 's' : subtitle_codec_name = arg; break;
3613    case 'v' :    video_codec_name = arg; break;
3614    default:
3615        av_log(NULL, AV_LOG_ERROR,
3616               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3617        return AVERROR(EINVAL);
3618    }
3619    return 0;
3620 }
3621
3622 static int dummy;
3623
3624 static const OptionDef options[] = {
3625 #include "cmdutils_common_opts.h"
3626     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3627     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3628     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3629     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3630     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3631     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3632     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3633     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
3634     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
3635     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
3636     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3637     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3638     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3639     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3640     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3641     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3642     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3643     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { &workaround_bugs }, "workaround bugs", "" },
3644     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3645     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3646     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3647     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3648     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3649     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3650     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3651     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3652     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3653     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3654     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3655     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3656 #if CONFIG_AVFILTER
3657     { "vf", OPT_EXPERT | HAS_ARG, { .func_arg = opt_add_vfilter }, "set video filters", "filter_graph" },
3658     { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
3659 #endif
3660     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
3661     { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3662     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
3663     { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
3664     { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
3665     { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
3666     { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
3667     { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
3668     { "autorotate", OPT_BOOL, { &autorotate }, "automatically rotate video", "" },
3669     { NULL, },
3670 };
3671
3672 static void show_usage(void)
3673 {
3674     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3675     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3676     av_log(NULL, AV_LOG_INFO, "\n");
3677 }
3678
3679 void show_help_default(const char *opt, const char *arg)
3680 {
3681     av_log_set_callback(log_callback_help);
3682     show_usage();
3683     show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
3684     show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
3685     printf("\n");
3686     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3687     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3688 #if !CONFIG_AVFILTER
3689     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3690 #else
3691     show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
3692 #endif
3693     printf("\nWhile playing:\n"
3694            "q, ESC              quit\n"
3695            "f                   toggle full screen\n"
3696            "p, SPC              pause\n"
3697            "a                   cycle audio channel in the current program\n"
3698            "v                   cycle video channel\n"
3699            "t                   cycle subtitle channel in the current program\n"
3700            "c                   cycle program\n"
3701            "w                   cycle video filters or show modes\n"
3702            "s                   activate frame-step mode\n"
3703            "left/right          seek backward/forward 10 seconds\n"
3704            "down/up             seek backward/forward 1 minute\n"
3705            "page down/page up   seek backward/forward 10 minutes\n"
3706            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3707            );
3708 }
3709
3710 static int lockmgr(void **mtx, enum AVLockOp op)
3711 {
3712    switch(op) {
3713       case AV_LOCK_CREATE:
3714           *mtx = SDL_CreateMutex();
3715           if(!*mtx)
3716               return 1;
3717           return 0;
3718       case AV_LOCK_OBTAIN:
3719           return !!SDL_LockMutex(*mtx);
3720       case AV_LOCK_RELEASE:
3721           return !!SDL_UnlockMutex(*mtx);
3722       case AV_LOCK_DESTROY:
3723           SDL_DestroyMutex(*mtx);
3724           return 0;
3725    }
3726    return 1;
3727 }
3728
3729 /* Called from the main */
3730 int main(int argc, char **argv)
3731 {
3732     int flags;
3733     VideoState *is;
3734     char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy";
3735
3736     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3737     parse_loglevel(argc, argv, options);
3738
3739     /* register all codecs, demux and protocols */
3740 #if CONFIG_AVDEVICE
3741     avdevice_register_all();
3742 #endif
3743 #if CONFIG_AVFILTER
3744     avfilter_register_all();
3745 #endif
3746     av_register_all();
3747     avformat_network_init();
3748
3749     init_opts();
3750
3751     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
3752     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
3753
3754     show_banner(argc, argv, options);
3755
3756     parse_options(NULL, argc, argv, options, opt_input_file);
3757
3758     if (!input_filename) {
3759         show_usage();
3760         av_log(NULL, AV_LOG_FATAL, "An input file must be specified\n");
3761         av_log(NULL, AV_LOG_FATAL,
3762                "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3763         exit(1);
3764     }
3765
3766     if (display_disable) {
3767         video_disable = 1;
3768     }
3769     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3770     if (audio_disable)
3771         flags &= ~SDL_INIT_AUDIO;
3772     if (display_disable)
3773         SDL_putenv(dummy_videodriver); /* For the event queue, we always need a video driver. */
3774 #if !defined(_WIN32) && !defined(__APPLE__)
3775     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3776 #endif
3777     if (SDL_Init (flags)) {
3778         av_log(NULL, AV_LOG_FATAL, "Could not initialize SDL - %s\n", SDL_GetError());
3779         av_log(NULL, AV_LOG_FATAL, "(Did you set the DISPLAY variable?)\n");
3780         exit(1);
3781     }
3782
3783     if (!display_disable) {
3784         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3785         fs_screen_width = vi->current_w;
3786         fs_screen_height = vi->current_h;
3787     }
3788
3789     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3790     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3791     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3792
3793     if (av_lockmgr_register(lockmgr)) {
3794         av_log(NULL, AV_LOG_FATAL, "Could not initialize lock manager!\n");
3795         do_exit(NULL);
3796     }
3797
3798     av_init_packet(&flush_pkt);
3799     flush_pkt.data = (uint8_t *)&flush_pkt;
3800
3801     is = stream_open(input_filename, file_iformat);
3802     if (!is) {
3803         av_log(NULL, AV_LOG_FATAL, "Failed to initialize VideoState!\n");
3804         do_exit(NULL);
3805     }
3806
3807     event_loop(is);
3808
3809     /* never returns */
3810
3811     return 0;
3812 }