ffplay.c

   1 /*
   2  * ffplay : Simple Media Player based on the FFmpeg libraries
   3  * Copyright (c) 2003 Fabrice Bellard
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 #include "config.h"
  23 #include <inttypes.h>
  24 #include <math.h>
  25 #include <limits.h>
  26 #include "libavutil/avstring.h"
  27 #include "libavutil/colorspace.h"
  28 #include "libavutil/mathematics.h"
  29 #include "libavutil/pixdesc.h"
  30 #include "libavutil/imgutils.h"
  31 #include "libavutil/dict.h"
  32 #include "libavutil/parseutils.h"
  33 #include "libavutil/samplefmt.h"
  34 #include "libavutil/avassert.h"
  35 #include "libavformat/avformat.h"
  36 #include "libavdevice/avdevice.h"
  37 #include "libswscale/swscale.h"
  38 #include "libavcodec/audioconvert.h"
  39 #include "libavutil/opt.h"
  40 #include "libavcodec/avfft.h"
  41
  42 #if CONFIG_AVFILTER
  43 # include "libavfilter/avcodec.h"
  44 # include "libavfilter/avfilter.h"
  45 # include "libavfilter/avfiltergraph.h"
  46 # include "libavfilter/vsink_buffer.h"
  47 #endif
  48
  49 #include <SDL.h>
  50 #include <SDL_thread.h>
  51
  52 #include "cmdutils.h"
  53
  54 #include <unistd.h>
  55 #include <assert.h>
  56
  57 const char program_name[] = "ffplay";
  58 const int program_birth_year = 2003;
  59
  60 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
  61 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
  62 #define MIN_FRAMES 5
  63
  64 /* SDL audio buffer size, in samples. Should be small to have precise
  65    A/V sync as SDL does not have hardware buffer fullness info. */
  66 #define SDL_AUDIO_BUFFER_SIZE 1024
  67
  68 /* no AV sync correction is done if below the AV sync threshold */
  69 #define AV_SYNC_THRESHOLD 0.01
  70 /* no AV correction is done if too big error */
  71 #define AV_NOSYNC_THRESHOLD 10.0
  72
  73 #define FRAME_SKIP_FACTOR 0.05
  74
  75 /* maximum audio speed change to get correct sync */
  76 #define SAMPLE_CORRECTION_PERCENT_MAX 10
  77
  78 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
  79 #define AUDIO_DIFF_AVG_NB   20
  80
  81 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
  82 #define SAMPLE_ARRAY_SIZE (2*65536)
  83
  84 static int sws_flags = SWS_BICUBIC;
  85
  86 typedef struct PacketQueue {
  87     AVPacketList *first_pkt, *last_pkt;
  88     int nb_packets;
  89     int size;
  90     int abort_request;
  91     SDL_mutex *mutex;
  92     SDL_cond *cond;
  93 } PacketQueue;
  94
  95 #define VIDEO_PICTURE_QUEUE_SIZE 2
  96 #define SUBPICTURE_QUEUE_SIZE 4
  97
  98 typedef struct VideoPicture {
  99     double pts;                                  ///<presentation time stamp for this picture
 100     double target_clock;                         ///<av_gettime() time at which this should be displayed ideally
 101     double duration;                             ///<expected duration of the frame
 102     int64_t pos;                                 ///<byte position in file
 103     SDL_Overlay *bmp;
 104     int width, height; /* source height & width */
 105     int allocated;
 106     enum PixelFormat pix_fmt;
 107
 108 #if CONFIG_AVFILTER
 109     AVFilterBufferRef *picref;
 110 #endif
 111 } VideoPicture;
 112
 113 typedef struct SubPicture {
 114     double pts; /* presentation time stamp for this picture */
 115     AVSubtitle sub;
 116 } SubPicture;
 117
 118 enum {
 119     AV_SYNC_AUDIO_MASTER, /* default choice */
 120     AV_SYNC_VIDEO_MASTER,
 121     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
 122 };
 123
 124 typedef struct VideoState {
 125     SDL_Thread *read_tid;
 126     SDL_Thread *video_tid;
 127     SDL_Thread *refresh_tid;
 128     AVInputFormat *iformat;
 129     int no_background;
 130     int abort_request;
 131     int paused;
 132     int last_paused;
 133     int seek_req;
 134     int seek_flags;
 135     int64_t seek_pos;
 136     int64_t seek_rel;
 137     int read_pause_return;
 138     AVFormatContext *ic;
 139
 140     int audio_stream;
 141
 142     int av_sync_type;
 143     double external_clock; /* external clock base */
 144     int64_t external_clock_time;
 145
 146     double audio_clock;
 147     double audio_diff_cum; /* used for AV difference average computation */
 148     double audio_diff_avg_coef;
 149     double audio_diff_threshold;
 150     int audio_diff_avg_count;
 151     AVStream *audio_st;
 152     PacketQueue audioq;
 153     int audio_hw_buf_size;
 154     /* samples output by the codec. we reserve more space for avsync
 155        compensation */
 156     DECLARE_ALIGNED(16,uint8_t,audio_buf1)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
 157     DECLARE_ALIGNED(16,uint8_t,audio_buf2)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
 158     uint8_t *audio_buf;
 159     unsigned int audio_buf_size; /* in bytes */
 160     int audio_buf_index; /* in bytes */
 161     int audio_write_buf_size;
 162     AVPacket audio_pkt_temp;
 163     AVPacket audio_pkt;
 164     enum AVSampleFormat audio_src_fmt;
 165     AVAudioConvert *reformat_ctx;
 166     double audio_current_pts;
 167     double audio_current_pts_drift;
 168
 169     enum ShowMode {
 170         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
 171     } show_mode;
 172     int16_t sample_array[SAMPLE_ARRAY_SIZE];
 173     int sample_array_index;
 174     int last_i_start;
 175     RDFTContext *rdft;
 176     int rdft_bits;
 177     FFTSample *rdft_data;
 178     int xpos;
 179
 180     SDL_Thread *subtitle_tid;
 181     int subtitle_stream;
 182     int subtitle_stream_changed;
 183     AVStream *subtitle_st;
 184     PacketQueue subtitleq;
 185     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
 186     int subpq_size, subpq_rindex, subpq_windex;
 187     SDL_mutex *subpq_mutex;
 188     SDL_cond *subpq_cond;
 189
 190     double frame_timer;
 191     double frame_last_pts;
 192     double frame_last_delay;
 193     double video_clock;                          ///<pts of last decoded frame / predicted pts of next decoded frame
 194     int video_stream;
 195     AVStream *video_st;
 196     PacketQueue videoq;
 197     double video_current_pts;                    ///<current displayed pts (different from video_clock if frame fifos are used)
 198     double video_current_pts_drift;              ///<video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
 199     int64_t video_current_pos;                   ///<current displayed file pos
 200     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
 201     int pictq_size, pictq_rindex, pictq_windex;
 202     SDL_mutex *pictq_mutex;
 203     SDL_cond *pictq_cond;
 204 #if !CONFIG_AVFILTER
 205     struct SwsContext *img_convert_ctx;
 206 #endif
 207
 208     char filename[1024];
 209     int width, height, xleft, ytop;
 210     int step;
 211
 212 #if CONFIG_AVFILTER
 213     AVFilterContext *out_video_filter;          ///<the last filter in the video chain
 214 #endif
 215
 216     float skip_frames;
 217     float skip_frames_index;
 218     int refresh;
 219 } VideoState;
 220
 221 static int opt_help(const char *opt, const char *arg);
 222
 223 /* options specified by the user */
 224 static AVInputFormat *file_iformat;
 225 static const char *input_filename;
 226 static const char *window_title;
 227 static int fs_screen_width;
 228 static int fs_screen_height;
 229 static int screen_width = 0;
 230 static int screen_height = 0;
 231 static int audio_disable;
 232 static int video_disable;
 233 static int wanted_stream[AVMEDIA_TYPE_NB]={
 234     [AVMEDIA_TYPE_AUDIO]=-1,
 235     [AVMEDIA_TYPE_VIDEO]=-1,
 236     [AVMEDIA_TYPE_SUBTITLE]=-1,
 237 };
 238 static int seek_by_bytes=-1;
 239 static int display_disable;
 240 static int show_status = 1;
 241 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
 242 static int64_t start_time = AV_NOPTS_VALUE;
 243 static int64_t duration = AV_NOPTS_VALUE;
 244 static int thread_count = 1;
 245 static int workaround_bugs = 1;
 246 static int fast = 0;
 247 static int genpts = 0;
 248 static int lowres = 0;
 249 static int idct = FF_IDCT_AUTO;
 250 static enum AVDiscard skip_frame= AVDISCARD_DEFAULT;
 251 static enum AVDiscard skip_idct= AVDISCARD_DEFAULT;
 252 static enum AVDiscard skip_loop_filter= AVDISCARD_DEFAULT;
 253 static int error_recognition = FF_ER_CAREFUL;
 254 static int error_concealment = 3;
 255 static int decoder_reorder_pts= -1;
 256 static int autoexit;
 257 static int exit_on_keydown;
 258 static int exit_on_mousedown;
 259 static int loop=1;
 260 static int framedrop=-1;
 261 static enum ShowMode show_mode = SHOW_MODE_NONE;
 262
 263 static int rdftspeed=20;
 264 #if CONFIG_AVFILTER
 265 static char *vfilters = NULL;
 266 #endif
 267
 268 /* current context */
 269 static int is_full_screen;
 270 static int64_t audio_callback_time;
 271
 272 static AVPacket flush_pkt;
 273
 274 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
 275 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
 276 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
 277
 278 static SDL_Surface *screen;
 279
 280 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
 281 {
 282     AVPacketList *pkt1;
 283
 284     /* duplicate the packet */
 285     if (pkt!=&flush_pkt && av_dup_packet(pkt) < 0)
 286         return -1;
 287
 288     pkt1 = av_malloc(sizeof(AVPacketList));
 289     if (!pkt1)
 290         return -1;
 291     pkt1->pkt = *pkt;
 292     pkt1->next = NULL;
 293
 294
 295     SDL_LockMutex(q->mutex);
 296
 297     if (!q->last_pkt)
 298
 299         q->first_pkt = pkt1;
 300     else
 301         q->last_pkt->next = pkt1;
 302     q->last_pkt = pkt1;
 303     q->nb_packets++;
 304     q->size += pkt1->pkt.size + sizeof(*pkt1);
 305     /* XXX: should duplicate packet data in DV case */
 306     SDL_CondSignal(q->cond);
 307
 308     SDL_UnlockMutex(q->mutex);
 309     return 0;
 310 }
 311
 312 /* packet queue handling */
 313 static void packet_queue_init(PacketQueue *q)
 314 {
 315     memset(q, 0, sizeof(PacketQueue));
 316     q->mutex = SDL_CreateMutex();
 317     q->cond = SDL_CreateCond();
 318     packet_queue_put(q, &flush_pkt);
 319 }
 320
 321 static void packet_queue_flush(PacketQueue *q)
 322 {
 323     AVPacketList *pkt, *pkt1;
 324
 325     SDL_LockMutex(q->mutex);
 326     for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
 327         pkt1 = pkt->next;
 328         av_free_packet(&pkt->pkt);
 329         av_freep(&pkt);
 330     }
 331     q->last_pkt = NULL;
 332     q->first_pkt = NULL;
 333     q->nb_packets = 0;
 334     q->size = 0;
 335     SDL_UnlockMutex(q->mutex);
 336 }
 337
 338 static void packet_queue_end(PacketQueue *q)
 339 {
 340     packet_queue_flush(q);
 341     SDL_DestroyMutex(q->mutex);
 342     SDL_DestroyCond(q->cond);
 343 }
 344
 345 static void packet_queue_abort(PacketQueue *q)
 346 {
 347     SDL_LockMutex(q->mutex);
 348
 349     q->abort_request = 1;
 350
 351     SDL_CondSignal(q->cond);
 352
 353     SDL_UnlockMutex(q->mutex);
 354 }
 355
 356 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
 357 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
 358 {
 359     AVPacketList *pkt1;
 360     int ret;
 361
 362     SDL_LockMutex(q->mutex);
 363
 364     for(;;) {
 365         if (q->abort_request) {
 366             ret = -1;
 367             break;
 368         }
 369
 370         pkt1 = q->first_pkt;
 371         if (pkt1) {
 372             q->first_pkt = pkt1->next;
 373             if (!q->first_pkt)
 374                 q->last_pkt = NULL;
 375             q->nb_packets--;
 376             q->size -= pkt1->pkt.size + sizeof(*pkt1);
 377             *pkt = pkt1->pkt;
 378             av_free(pkt1);
 379             ret = 1;
 380             break;
 381         } else if (!block) {
 382             ret = 0;
 383             break;
 384         } else {
 385             SDL_CondWait(q->cond, q->mutex);
 386         }
 387     }
 388     SDL_UnlockMutex(q->mutex);
 389     return ret;
 390 }
 391
 392 static inline void fill_rectangle(SDL_Surface *screen,
 393                                   int x, int y, int w, int h, int color)
 394 {
 395     SDL_Rect rect;
 396     rect.x = x;
 397     rect.y = y;
 398     rect.w = w;
 399     rect.h = h;
 400     SDL_FillRect(screen, &rect, color);
 401 }
 402
 403 #define ALPHA_BLEND(a, oldp, newp, s)\
 404 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
 405
 406 #define RGBA_IN(r, g, b, a, s)\
 407 {\
 408     unsigned int v = ((const uint32_t *)(s))[0];\
 409     a = (v >> 24) & 0xff;\
 410     r = (v >> 16) & 0xff;\
 411     g = (v >> 8) & 0xff;\
 412     b = v & 0xff;\
 413 }
 414
 415 #define YUVA_IN(y, u, v, a, s, pal)\
 416 {\
 417     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
 418     a = (val >> 24) & 0xff;\
 419     y = (val >> 16) & 0xff;\
 420     u = (val >> 8) & 0xff;\
 421     v = val & 0xff;\
 422 }
 423
 424 #define YUVA_OUT(d, y, u, v, a)\
 425 {\
 426     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
 427 }
 428
 429
 430 #define BPP 1
 431
 432 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
 433 {
 434     int wrap, wrap3, width2, skip2;
 435     int y, u, v, a, u1, v1, a1, w, h;
 436     uint8_t *lum, *cb, *cr;
 437     const uint8_t *p;
 438     const uint32_t *pal;
 439     int dstx, dsty, dstw, dsth;
 440
 441     dstw = av_clip(rect->w, 0, imgw);
 442     dsth = av_clip(rect->h, 0, imgh);
 443     dstx = av_clip(rect->x, 0, imgw - dstw);
 444     dsty = av_clip(rect->y, 0, imgh - dsth);
 445     lum = dst->data[0] + dsty * dst->linesize[0];
 446     cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
 447     cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
 448
 449     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
 450     skip2 = dstx >> 1;
 451     wrap = dst->linesize[0];
 452     wrap3 = rect->pict.linesize[0];
 453     p = rect->pict.data[0];
 454     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
 455
 456     if (dsty & 1) {
 457         lum += dstx;
 458         cb += skip2;
 459         cr += skip2;
 460
 461         if (dstx & 1) {
 462             YUVA_IN(y, u, v, a, p, pal);
 463             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 464             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 465             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 466             cb++;
 467             cr++;
 468             lum++;
 469             p += BPP;
 470         }
 471         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
 472             YUVA_IN(y, u, v, a, p, pal);
 473             u1 = u;
 474             v1 = v;
 475             a1 = a;
 476             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 477
 478             YUVA_IN(y, u, v, a, p + BPP, pal);
 479             u1 += u;
 480             v1 += v;
 481             a1 += a;
 482             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 483             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 484             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 485             cb++;
 486             cr++;
 487             p += 2 * BPP;
 488             lum += 2;
 489         }
 490         if (w) {
 491             YUVA_IN(y, u, v, a, p, pal);
 492             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 493             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 494             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 495             p++;
 496             lum++;
 497         }
 498         p += wrap3 - dstw * BPP;
 499         lum += wrap - dstw - dstx;
 500         cb += dst->linesize[1] - width2 - skip2;
 501         cr += dst->linesize[2] - width2 - skip2;
 502     }
 503     for(h = dsth - (dsty & 1); h >= 2; h -= 2) {
 504         lum += dstx;
 505         cb += skip2;
 506         cr += skip2;
 507
 508         if (dstx & 1) {
 509             YUVA_IN(y, u, v, a, p, pal);
 510             u1 = u;
 511             v1 = v;
 512             a1 = a;
 513             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 514             p += wrap3;
 515             lum += wrap;
 516             YUVA_IN(y, u, v, a, p, pal);
 517             u1 += u;
 518             v1 += v;
 519             a1 += a;
 520             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 521             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 522             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 523             cb++;
 524             cr++;
 525             p += -wrap3 + BPP;
 526             lum += -wrap + 1;
 527         }
 528         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
 529             YUVA_IN(y, u, v, a, p, pal);
 530             u1 = u;
 531             v1 = v;
 532             a1 = a;
 533             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 534
 535             YUVA_IN(y, u, v, a, p + BPP, pal);
 536             u1 += u;
 537             v1 += v;
 538             a1 += a;
 539             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 540             p += wrap3;
 541             lum += wrap;
 542
 543             YUVA_IN(y, u, v, a, p, pal);
 544             u1 += u;
 545             v1 += v;
 546             a1 += a;
 547             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 548
 549             YUVA_IN(y, u, v, a, p + BPP, pal);
 550             u1 += u;
 551             v1 += v;
 552             a1 += a;
 553             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 554
 555             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
 556             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
 557
 558             cb++;
 559             cr++;
 560             p += -wrap3 + 2 * BPP;
 561             lum += -wrap + 2;
 562         }
 563         if (w) {
 564             YUVA_IN(y, u, v, a, p, pal);
 565             u1 = u;
 566             v1 = v;
 567             a1 = a;
 568             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 569             p += wrap3;
 570             lum += wrap;
 571             YUVA_IN(y, u, v, a, p, pal);
 572             u1 += u;
 573             v1 += v;
 574             a1 += a;
 575             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 576             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
 577             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
 578             cb++;
 579             cr++;
 580             p += -wrap3 + BPP;
 581             lum += -wrap + 1;
 582         }
 583         p += wrap3 + (wrap3 - dstw * BPP);
 584         lum += wrap + (wrap - dstw - dstx);
 585         cb += dst->linesize[1] - width2 - skip2;
 586         cr += dst->linesize[2] - width2 - skip2;
 587     }
 588     /* handle odd height */
 589     if (h) {
 590         lum += dstx;
 591         cb += skip2;
 592         cr += skip2;
 593
 594         if (dstx & 1) {
 595             YUVA_IN(y, u, v, a, p, pal);
 596             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 597             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 598             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 599             cb++;
 600             cr++;
 601             lum++;
 602             p += BPP;
 603         }
 604         for(w = dstw - (dstx & 1); w >= 2; w -= 2) {
 605             YUVA_IN(y, u, v, a, p, pal);
 606             u1 = u;
 607             v1 = v;
 608             a1 = a;
 609             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 610
 611             YUVA_IN(y, u, v, a, p + BPP, pal);
 612             u1 += u;
 613             v1 += v;
 614             a1 += a;
 615             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
 616             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
 617             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
 618             cb++;
 619             cr++;
 620             p += 2 * BPP;
 621             lum += 2;
 622         }
 623         if (w) {
 624             YUVA_IN(y, u, v, a, p, pal);
 625             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
 626             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
 627             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
 628         }
 629     }
 630 }
 631
 632 static void free_subpicture(SubPicture *sp)
 633 {
 634     avsubtitle_free(&sp->sub);
 635 }
 636
 637 static void video_image_display(VideoState *is)
 638 {
 639     VideoPicture *vp;
 640     SubPicture *sp;
 641     AVPicture pict;
 642     float aspect_ratio;
 643     int width, height, x, y;
 644     SDL_Rect rect;
 645     int i;
 646
 647     vp = &is->pictq[is->pictq_rindex];
 648     if (vp->bmp) {
 649 #if CONFIG_AVFILTER
 650          if (vp->picref->video->sample_aspect_ratio.num == 0)
 651              aspect_ratio = 0;
 652          else
 653              aspect_ratio = av_q2d(vp->picref->video->sample_aspect_ratio);
 654 #else
 655
 656         /* XXX: use variable in the frame */
 657         if (is->video_st->sample_aspect_ratio.num)
 658             aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
 659         else if (is->video_st->codec->sample_aspect_ratio.num)
 660             aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
 661         else
 662             aspect_ratio = 0;
 663 #endif
 664         if (aspect_ratio <= 0.0)
 665             aspect_ratio = 1.0;
 666         aspect_ratio *= (float)vp->width / (float)vp->height;
 667
 668         if (is->subtitle_st) {
 669             if (is->subpq_size > 0) {
 670                 sp = &is->subpq[is->subpq_rindex];
 671
 672                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
 673                     SDL_LockYUVOverlay (vp->bmp);
 674
 675                     pict.data[0] = vp->bmp->pixels[0];
 676                     pict.data[1] = vp->bmp->pixels[2];
 677                     pict.data[2] = vp->bmp->pixels[1];
 678
 679                     pict.linesize[0] = vp->bmp->pitches[0];
 680                     pict.linesize[1] = vp->bmp->pitches[2];
 681                     pict.linesize[2] = vp->bmp->pitches[1];
 682
 683                     for (i = 0; i < sp->sub.num_rects; i++)
 684                         blend_subrect(&pict, sp->sub.rects[i],
 685                                       vp->bmp->w, vp->bmp->h);
 686
 687                     SDL_UnlockYUVOverlay (vp->bmp);
 688                 }
 689             }
 690         }
 691
 692
 693         /* XXX: we suppose the screen has a 1.0 pixel ratio */
 694         height = is->height;
 695         width = ((int)rint(height * aspect_ratio)) & ~1;
 696         if (width > is->width) {
 697             width = is->width;
 698             height = ((int)rint(width / aspect_ratio)) & ~1;
 699         }
 700         x = (is->width - width) / 2;
 701         y = (is->height - height) / 2;
 702         is->no_background = 0;
 703         rect.x = is->xleft + x;
 704         rect.y = is->ytop  + y;
 705         rect.w = FFMAX(width,  1);
 706         rect.h = FFMAX(height, 1);
 707         SDL_DisplayYUVOverlay(vp->bmp, &rect);
 708     }
 709 }
 710
 711 static inline int compute_mod(int a, int b)
 712 {
 713     return a < 0 ? a%b + b : a%b;
 714 }
 715
 716 static void video_audio_display(VideoState *s)
 717 {
 718     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
 719     int ch, channels, h, h2, bgcolor, fgcolor;
 720     int16_t time_diff;
 721     int rdft_bits, nb_freq;
 722
 723     for(rdft_bits=1; (1<<rdft_bits)<2*s->height; rdft_bits++)
 724         ;
 725     nb_freq= 1<<(rdft_bits-1);
 726
 727     /* compute display index : center on currently output samples */
 728     channels = s->audio_st->codec->channels;
 729     nb_display_channels = channels;
 730     if (!s->paused) {
 731         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
 732         n = 2 * channels;
 733         delay = s->audio_write_buf_size;
 734         delay /= n;
 735
 736         /* to be more precise, we take into account the time spent since
 737            the last buffer computation */
 738         if (audio_callback_time) {
 739             time_diff = av_gettime() - audio_callback_time;
 740             delay -= (time_diff * s->audio_st->codec->sample_rate) / 1000000;
 741         }
 742
 743         delay += 2*data_used;
 744         if (delay < data_used)
 745             delay = data_used;
 746
 747         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
 748         if (s->show_mode == SHOW_MODE_WAVES) {
 749             h= INT_MIN;
 750             for(i=0; i<1000; i+=channels){
 751                 int idx= (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
 752                 int a= s->sample_array[idx];
 753                 int b= s->sample_array[(idx + 4*channels)%SAMPLE_ARRAY_SIZE];
 754                 int c= s->sample_array[(idx + 5*channels)%SAMPLE_ARRAY_SIZE];
 755                 int d= s->sample_array[(idx + 9*channels)%SAMPLE_ARRAY_SIZE];
 756                 int score= a-d;
 757                 if(h<score && (b^c)<0){
 758                     h= score;
 759                     i_start= idx;
 760                 }
 761             }
 762         }
 763
 764         s->last_i_start = i_start;
 765     } else {
 766         i_start = s->last_i_start;
 767     }
 768
 769     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
 770     if (s->show_mode == SHOW_MODE_WAVES) {
 771         fill_rectangle(screen,
 772                        s->xleft, s->ytop, s->width, s->height,
 773                        bgcolor);
 774
 775         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
 776
 777         /* total height for one channel */
 778         h = s->height / nb_display_channels;
 779         /* graph height / 2 */
 780         h2 = (h * 9) / 20;
 781         for(ch = 0;ch < nb_display_channels; ch++) {
 782             i = i_start + ch;
 783             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
 784             for(x = 0; x < s->width; x++) {
 785                 y = (s->sample_array[i] * h2) >> 15;
 786                 if (y < 0) {
 787                     y = -y;
 788                     ys = y1 - y;
 789                 } else {
 790                     ys = y1;
 791                 }
 792                 fill_rectangle(screen,
 793                                s->xleft + x, ys, 1, y,
 794                                fgcolor);
 795                 i += channels;
 796                 if (i >= SAMPLE_ARRAY_SIZE)
 797                     i -= SAMPLE_ARRAY_SIZE;
 798             }
 799         }
 800
 801         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
 802
 803         for(ch = 1;ch < nb_display_channels; ch++) {
 804             y = s->ytop + ch * h;
 805             fill_rectangle(screen,
 806                            s->xleft, y, s->width, 1,
 807                            fgcolor);
 808         }
 809         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
 810     }else{
 811         nb_display_channels= FFMIN(nb_display_channels, 2);
 812         if(rdft_bits != s->rdft_bits){
 813             av_rdft_end(s->rdft);
 814             av_free(s->rdft_data);
 815             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
 816             s->rdft_bits= rdft_bits;
 817             s->rdft_data= av_malloc(4*nb_freq*sizeof(*s->rdft_data));
 818         }
 819         {
 820             FFTSample *data[2];
 821             for(ch = 0;ch < nb_display_channels; ch++) {
 822                 data[ch] = s->rdft_data + 2*nb_freq*ch;
 823                 i = i_start + ch;
 824                 for(x = 0; x < 2*nb_freq; x++) {
 825                     double w= (x-nb_freq)*(1.0/nb_freq);
 826                     data[ch][x]= s->sample_array[i]*(1.0-w*w);
 827                     i += channels;
 828                     if (i >= SAMPLE_ARRAY_SIZE)
 829                         i -= SAMPLE_ARRAY_SIZE;
 830                 }
 831                 av_rdft_calc(s->rdft, data[ch]);
 832             }
 833             //least efficient way to do this, we should of course directly access it but its more than fast enough
 834             for(y=0; y<s->height; y++){
 835                 double w= 1/sqrt(nb_freq);
 836                 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]));
 837                 int b= (nb_display_channels == 2 ) ? sqrt(w*sqrt(data[1][2*y+0]*data[1][2*y+0]
 838                        + data[1][2*y+1]*data[1][2*y+1])) : a;
 839                 a= FFMIN(a,255);
 840                 b= FFMIN(b,255);
 841                 fgcolor = SDL_MapRGB(screen->format, a, b, (a+b)/2);
 842
 843                 fill_rectangle(screen,
 844                             s->xpos, s->height-y, 1, 1,
 845                             fgcolor);
 846             }
 847         }
 848         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
 849         s->xpos++;
 850         if(s->xpos >= s->width)
 851             s->xpos= s->xleft;
 852     }
 853 }
 854
 855 static void stream_close(VideoState *is)
 856 {
 857     VideoPicture *vp;
 858     int i;
 859     /* XXX: use a special url_shutdown call to abort parse cleanly */
 860     is->abort_request = 1;
 861     SDL_WaitThread(is->read_tid, NULL);
 862     SDL_WaitThread(is->refresh_tid, NULL);
 863
 864     /* free all pictures */
 865     for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
 866         vp = &is->pictq[i];
 867 #if CONFIG_AVFILTER
 868         if (vp->picref) {
 869             avfilter_unref_buffer(vp->picref);
 870             vp->picref = NULL;
 871         }
 872 #endif
 873         if (vp->bmp) {
 874             SDL_FreeYUVOverlay(vp->bmp);
 875             vp->bmp = NULL;
 876         }
 877     }
 878     SDL_DestroyMutex(is->pictq_mutex);
 879     SDL_DestroyCond(is->pictq_cond);
 880     SDL_DestroyMutex(is->subpq_mutex);
 881     SDL_DestroyCond(is->subpq_cond);
 882 #if !CONFIG_AVFILTER
 883     if (is->img_convert_ctx)
 884         sws_freeContext(is->img_convert_ctx);
 885 #endif
 886     av_free(is);
 887 }
 888
 889 static void do_exit(VideoState *is)
 890 {
 891     if (is) {
 892         stream_close(is);
 893     }
 894     av_lockmgr_register(NULL);
 895     uninit_opts();
 896 #if CONFIG_AVFILTER
 897     avfilter_uninit();
 898 #endif
 899     if (show_status)
 900         printf("\n");
 901     SDL_Quit();
 902     av_log(NULL, AV_LOG_QUIET, "%s", "");
 903     exit(0);
 904 }
 905
 906 static int video_open(VideoState *is){
 907     int flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
 908     int w,h;
 909
 910     if(is_full_screen) flags |= SDL_FULLSCREEN;
 911     else               flags |= SDL_RESIZABLE;
 912
 913     if (is_full_screen && fs_screen_width) {
 914         w = fs_screen_width;
 915         h = fs_screen_height;
 916     } else if(!is_full_screen && screen_width){
 917         w = screen_width;
 918         h = screen_height;
 919 #if CONFIG_AVFILTER
 920     }else if (is->out_video_filter && is->out_video_filter->inputs[0]){
 921         w = is->out_video_filter->inputs[0]->w;
 922         h = is->out_video_filter->inputs[0]->h;
 923 #else
 924     }else if (is->video_st && is->video_st->codec->width){
 925         w = is->video_st->codec->width;
 926         h = is->video_st->codec->height;
 927 #endif
 928     } else {
 929         w = 640;
 930         h = 480;
 931     }
 932     if(screen && is->width == screen->w && screen->w == w
 933        && is->height== screen->h && screen->h == h)
 934         return 0;
 935
 936 #ifndef __APPLE__
 937     screen = SDL_SetVideoMode(w, h, 0, flags);
 938 #else
 939     /* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
 940     screen = SDL_SetVideoMode(w, h, 24, flags);
 941 #endif
 942     if (!screen) {
 943         fprintf(stderr, "SDL: could not set video mode - exiting\n");
 944         do_exit(is);
 945     }
 946     if (!window_title)
 947         window_title = input_filename;
 948     SDL_WM_SetCaption(window_title, window_title);
 949
 950     is->width = screen->w;
 951     is->height = screen->h;
 952
 953     return 0;
 954 }
 955
 956 /* display the current picture, if any */
 957 static void video_display(VideoState *is)
 958 {
 959     if(!screen)
 960         video_open(is);
 961     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
 962         video_audio_display(is);
 963     else if (is->video_st)
 964         video_image_display(is);
 965 }
 966
 967 static int refresh_thread(void *opaque)
 968 {
 969     VideoState *is= opaque;
 970     while(!is->abort_request){
 971         SDL_Event event;
 972         event.type = FF_REFRESH_EVENT;
 973         event.user.data1 = opaque;
 974         if(!is->refresh){
 975             is->refresh=1;
 976             SDL_PushEvent(&event);
 977         }
 978         //FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
 979         usleep(is->audio_st && is->show_mode != SHOW_MODE_VIDEO ? rdftspeed*1000 : 5000);
 980     }
 981     return 0;
 982 }
 983
 984 /* get the current audio clock value */
 985 static double get_audio_clock(VideoState *is)
 986 {
 987     if (is->paused) {
 988         return is->audio_current_pts;
 989     } else {
 990         return is->audio_current_pts_drift + av_gettime() / 1000000.0;
 991     }
 992 }
 993
 994 /* get the current video clock value */
 995 static double get_video_clock(VideoState *is)
 996 {
 997     if (is->paused) {
 998         return is->video_current_pts;
 999     } else {
1000         return is->video_current_pts_drift + av_gettime() / 1000000.0;
1001     }
1002 }
1003
1004 /* get the current external clock value */
1005 static double get_external_clock(VideoState *is)
1006 {
1007     int64_t ti;
1008     ti = av_gettime();
1009     return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
1010 }
1011
1012 /* get the current master clock value */
1013 static double get_master_clock(VideoState *is)
1014 {
1015     double val;
1016
1017     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1018         if (is->video_st)
1019             val = get_video_clock(is);
1020         else
1021             val = get_audio_clock(is);
1022     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1023         if (is->audio_st)
1024             val = get_audio_clock(is);
1025         else
1026             val = get_video_clock(is);
1027     } else {
1028         val = get_external_clock(is);
1029     }
1030     return val;
1031 }
1032
1033 /* seek in the stream */
1034 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1035 {
1036     if (!is->seek_req) {
1037         is->seek_pos = pos;
1038         is->seek_rel = rel;
1039         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1040         if (seek_by_bytes)
1041             is->seek_flags |= AVSEEK_FLAG_BYTE;
1042         is->seek_req = 1;
1043     }
1044 }
1045
1046 /* pause or resume the video */
1047 static void stream_toggle_pause(VideoState *is)
1048 {
1049     if (is->paused) {
1050         is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1051         if(is->read_pause_return != AVERROR(ENOSYS)){
1052             is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
1053         }
1054         is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
1055     }
1056     is->paused = !is->paused;
1057 }
1058
1059 static double compute_target_time(double frame_current_pts, VideoState *is)
1060 {
1061     double delay, sync_threshold, diff;
1062
1063     /* compute nominal delay */
1064     delay = frame_current_pts - is->frame_last_pts;
1065     if (delay <= 0 || delay >= 10.0) {
1066         /* if incorrect delay, use previous one */
1067         delay = is->frame_last_delay;
1068     } else {
1069         is->frame_last_delay = delay;
1070     }
1071     is->frame_last_pts = frame_current_pts;
1072
1073     /* update delay to follow master synchronisation source */
1074     if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1075          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1076         /* if video is slave, we try to correct big delays by
1077            duplicating or deleting a frame */
1078         diff = get_video_clock(is) - get_master_clock(is);
1079
1080         /* skip or repeat frame. We take into account the
1081            delay to compute the threshold. I still don't know
1082            if it is the best guess */
1083         sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1084         if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1085             if (diff <= -sync_threshold)
1086                 delay = 0;
1087             else if (diff >= sync_threshold)
1088                 delay = 2 * delay;
1089         }
1090     }
1091     is->frame_timer += delay;
1092
1093     av_dlog(NULL, "video: delay=%0.3f pts=%0.3f A-V=%f\n",
1094             delay, frame_current_pts, -diff);
1095
1096     return is->frame_timer;
1097 }
1098
1099 /* called to display each frame */
1100 static void video_refresh(void *opaque)
1101 {
1102     VideoState *is = opaque;
1103     VideoPicture *vp;
1104
1105     SubPicture *sp, *sp2;
1106
1107     if (is->video_st) {
1108 retry:
1109         if (is->pictq_size == 0) {
1110             //nothing to do, no picture to display in the que
1111         } else {
1112             double time= av_gettime()/1000000.0;
1113             double next_target;
1114             /* dequeue the picture */
1115             vp = &is->pictq[is->pictq_rindex];
1116
1117             if(time < vp->target_clock)
1118                 return;
1119             /* update current video pts */
1120             is->video_current_pts = vp->pts;
1121             is->video_current_pts_drift = is->video_current_pts - time;
1122             is->video_current_pos = vp->pos;
1123             if(is->pictq_size > 1){
1124                 VideoPicture *nextvp= &is->pictq[(is->pictq_rindex+1)%VIDEO_PICTURE_QUEUE_SIZE];
1125                 assert(nextvp->target_clock >= vp->target_clock);
1126                 next_target= nextvp->target_clock;
1127             }else{
1128                 next_target= vp->target_clock + vp->duration;
1129             }
1130             if((framedrop>0 || (framedrop && is->audio_st)) && time > next_target){
1131                 is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
1132                 if(is->pictq_size > 1 || time > next_target + 0.5){
1133                     /* update queue size and signal for next picture */
1134                     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1135                         is->pictq_rindex = 0;
1136
1137                     SDL_LockMutex(is->pictq_mutex);
1138                     is->pictq_size--;
1139                     SDL_CondSignal(is->pictq_cond);
1140                     SDL_UnlockMutex(is->pictq_mutex);
1141                     goto retry;
1142                 }
1143             }
1144
1145             if(is->subtitle_st) {
1146                 if (is->subtitle_stream_changed) {
1147                     SDL_LockMutex(is->subpq_mutex);
1148
1149                     while (is->subpq_size) {
1150                         free_subpicture(&is->subpq[is->subpq_rindex]);
1151
1152                         /* update queue size and signal for next picture */
1153                         if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1154                             is->subpq_rindex = 0;
1155
1156                         is->subpq_size--;
1157                     }
1158                     is->subtitle_stream_changed = 0;
1159
1160                     SDL_CondSignal(is->subpq_cond);
1161                     SDL_UnlockMutex(is->subpq_mutex);
1162                 } else {
1163                     if (is->subpq_size > 0) {
1164                         sp = &is->subpq[is->subpq_rindex];
1165
1166                         if (is->subpq_size > 1)
1167                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1168                         else
1169                             sp2 = NULL;
1170
1171                         if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1172                                 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1173                         {
1174                             free_subpicture(sp);
1175
1176                             /* update queue size and signal for next picture */
1177                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1178                                 is->subpq_rindex = 0;
1179
1180                             SDL_LockMutex(is->subpq_mutex);
1181                             is->subpq_size--;
1182                             SDL_CondSignal(is->subpq_cond);
1183                             SDL_UnlockMutex(is->subpq_mutex);
1184                         }
1185                     }
1186                 }
1187             }
1188
1189             /* display picture */
1190             if (!display_disable)
1191                 video_display(is);
1192
1193             /* update queue size and signal for next picture */
1194             if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1195                 is->pictq_rindex = 0;
1196
1197             SDL_LockMutex(is->pictq_mutex);
1198             is->pictq_size--;
1199             SDL_CondSignal(is->pictq_cond);
1200             SDL_UnlockMutex(is->pictq_mutex);
1201         }
1202     } else if (is->audio_st) {
1203         /* draw the next audio frame */
1204
1205         /* if only audio stream, then display the audio bars (better
1206            than nothing, just to test the implementation */
1207
1208         /* display picture */
1209         if (!display_disable)
1210             video_display(is);
1211     }
1212     if (show_status) {
1213         static int64_t last_time;
1214         int64_t cur_time;
1215         int aqsize, vqsize, sqsize;
1216         double av_diff;
1217
1218         cur_time = av_gettime();
1219         if (!last_time || (cur_time - last_time) >= 30000) {
1220             aqsize = 0;
1221             vqsize = 0;
1222             sqsize = 0;
1223             if (is->audio_st)
1224                 aqsize = is->audioq.size;
1225             if (is->video_st)
1226                 vqsize = is->videoq.size;
1227             if (is->subtitle_st)
1228                 sqsize = is->subtitleq.size;
1229             av_diff = 0;
1230             if (is->audio_st && is->video_st)
1231                 av_diff = get_audio_clock(is) - get_video_clock(is);
1232             printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1233                    get_master_clock(is),
1234                    av_diff,
1235                    FFMAX(is->skip_frames-1, 0),
1236                    aqsize / 1024,
1237                    vqsize / 1024,
1238                    sqsize,
1239                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1240                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1241             fflush(stdout);
1242             last_time = cur_time;
1243         }
1244     }
1245 }
1246
1247 /* allocate a picture (needs to do that in main thread to avoid
1248    potential locking problems */
1249 static void alloc_picture(void *opaque)
1250 {
1251     VideoState *is = opaque;
1252     VideoPicture *vp;
1253
1254     vp = &is->pictq[is->pictq_windex];
1255
1256     if (vp->bmp)
1257         SDL_FreeYUVOverlay(vp->bmp);
1258
1259 #if CONFIG_AVFILTER
1260     if (vp->picref)
1261         avfilter_unref_buffer(vp->picref);
1262     vp->picref = NULL;
1263
1264     vp->width   = is->out_video_filter->inputs[0]->w;
1265     vp->height  = is->out_video_filter->inputs[0]->h;
1266     vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1267 #else
1268     vp->width   = is->video_st->codec->width;
1269     vp->height  = is->video_st->codec->height;
1270     vp->pix_fmt = is->video_st->codec->pix_fmt;
1271 #endif
1272
1273     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1274                                    SDL_YV12_OVERLAY,
1275                                    screen);
1276     if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1277         /* SDL allocates a buffer smaller than requested if the video
1278          * overlay hardware is unable to support the requested size. */
1279         fprintf(stderr, "Error: the video system does not support an image\n"
1280                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1281                         "to reduce the image size.\n", vp->width, vp->height );
1282         do_exit(is);
1283     }
1284
1285     SDL_LockMutex(is->pictq_mutex);
1286     vp->allocated = 1;
1287     SDL_CondSignal(is->pictq_cond);
1288     SDL_UnlockMutex(is->pictq_mutex);
1289 }
1290
1291 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1292 {
1293     VideoPicture *vp;
1294     double frame_delay, pts = pts1;
1295
1296     /* compute the exact PTS for the picture if it is omitted in the stream
1297      * pts1 is the dts of the pkt / pts of the frame */
1298     if (pts != 0) {
1299         /* update video clock with pts, if present */
1300         is->video_clock = pts;
1301     } else {
1302         pts = is->video_clock;
1303     }
1304     /* update video clock for next frame */
1305     frame_delay = av_q2d(is->video_st->codec->time_base);
1306     /* for MPEG2, the frame can be repeated, so we update the
1307        clock accordingly */
1308     frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1309     is->video_clock += frame_delay;
1310
1311 #if defined(DEBUG_SYNC) && 0
1312     printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1313            av_get_picture_type_char(src_frame->pict_type), pts, pts1);
1314 #endif
1315
1316     /* wait until we have space to put a new picture */
1317     SDL_LockMutex(is->pictq_mutex);
1318
1319     if(is->pictq_size>=VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1320         is->skip_frames= FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0-FRAME_SKIP_FACTOR));
1321
1322     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1323            !is->videoq.abort_request) {
1324         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1325     }
1326     SDL_UnlockMutex(is->pictq_mutex);
1327
1328     if (is->videoq.abort_request)
1329         return -1;
1330
1331     vp = &is->pictq[is->pictq_windex];
1332
1333     vp->duration = frame_delay;
1334
1335     /* alloc or resize hardware picture buffer */
1336     if (!vp->bmp ||
1337 #if CONFIG_AVFILTER
1338         vp->width  != is->out_video_filter->inputs[0]->w ||
1339         vp->height != is->out_video_filter->inputs[0]->h) {
1340 #else
1341         vp->width != is->video_st->codec->width ||
1342         vp->height != is->video_st->codec->height) {
1343 #endif
1344         SDL_Event event;
1345
1346         vp->allocated = 0;
1347
1348         /* the allocation must be done in the main thread to avoid
1349            locking problems */
1350         event.type = FF_ALLOC_EVENT;
1351         event.user.data1 = is;
1352         SDL_PushEvent(&event);
1353
1354         /* wait until the picture is allocated */
1355         SDL_LockMutex(is->pictq_mutex);
1356         while (!vp->allocated && !is->videoq.abort_request) {
1357             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1358         }
1359         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1360         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1361             while (!vp->allocated) {
1362                 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1363             }
1364         }
1365         SDL_UnlockMutex(is->pictq_mutex);
1366
1367         if (is->videoq.abort_request)
1368             return -1;
1369     }
1370
1371     /* if the frame is not skipped, then display it */
1372     if (vp->bmp) {
1373         AVPicture pict;
1374 #if CONFIG_AVFILTER
1375         if(vp->picref)
1376             avfilter_unref_buffer(vp->picref);
1377         vp->picref = src_frame->opaque;
1378 #endif
1379
1380         /* get a pointer on the bitmap */
1381         SDL_LockYUVOverlay (vp->bmp);
1382
1383         memset(&pict,0,sizeof(AVPicture));
1384         pict.data[0] = vp->bmp->pixels[0];
1385         pict.data[1] = vp->bmp->pixels[2];
1386         pict.data[2] = vp->bmp->pixels[1];
1387
1388         pict.linesize[0] = vp->bmp->pitches[0];
1389         pict.linesize[1] = vp->bmp->pitches[2];
1390         pict.linesize[2] = vp->bmp->pitches[1];
1391
1392 #if CONFIG_AVFILTER
1393         //FIXME use direct rendering
1394         av_picture_copy(&pict, (AVPicture *)src_frame,
1395                         vp->pix_fmt, vp->width, vp->height);
1396 #else
1397         sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1398         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1399             vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1400             PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1401         if (is->img_convert_ctx == NULL) {
1402             fprintf(stderr, "Cannot initialize the conversion context\n");
1403             exit(1);
1404         }
1405         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1406                   0, vp->height, pict.data, pict.linesize);
1407 #endif
1408         /* update the bitmap content */
1409         SDL_UnlockYUVOverlay(vp->bmp);
1410
1411         vp->pts = pts;
1412         vp->pos = pos;
1413
1414         /* now we can update the picture count */
1415         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1416             is->pictq_windex = 0;
1417         SDL_LockMutex(is->pictq_mutex);
1418         vp->target_clock= compute_target_time(vp->pts, is);
1419
1420         is->pictq_size++;
1421         SDL_UnlockMutex(is->pictq_mutex);
1422     }
1423     return 0;
1424 }
1425
1426 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1427 {
1428     int got_picture, i;
1429
1430     if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1431         return -1;
1432
1433     if (pkt->data == flush_pkt.data) {
1434         avcodec_flush_buffers(is->video_st->codec);
1435
1436         SDL_LockMutex(is->pictq_mutex);
1437         //Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1438         for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1439             is->pictq[i].target_clock= 0;
1440         }
1441         while (is->pictq_size && !is->videoq.abort_request) {
1442             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1443         }
1444         is->video_current_pos = -1;
1445         SDL_UnlockMutex(is->pictq_mutex);
1446
1447         is->frame_last_pts = AV_NOPTS_VALUE;
1448         is->frame_last_delay = 0;
1449         is->frame_timer = (double)av_gettime() / 1000000.0;
1450         is->skip_frames = 1;
1451         is->skip_frames_index = 0;
1452         return 0;
1453     }
1454
1455     avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt);
1456
1457     if (got_picture) {
1458         if (decoder_reorder_pts == -1) {
1459             *pts = frame->best_effort_timestamp;
1460         } else if (decoder_reorder_pts) {
1461             *pts = frame->pkt_pts;
1462         } else {
1463             *pts = frame->pkt_dts;
1464         }
1465
1466         if (*pts == AV_NOPTS_VALUE) {
1467             *pts = 0;
1468         }
1469
1470         is->skip_frames_index += 1;
1471         if(is->skip_frames_index >= is->skip_frames){
1472             is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1473             return 1;
1474         }
1475
1476     }
1477     return 0;
1478 }
1479
1480 #if CONFIG_AVFILTER
1481 typedef struct {
1482     VideoState *is;
1483     AVFrame *frame;
1484     int use_dr1;
1485 } FilterPriv;
1486
1487 static int input_get_buffer(AVCodecContext *codec, AVFrame *pic)
1488 {
1489     AVFilterContext *ctx = codec->opaque;
1490     AVFilterBufferRef  *ref;
1491     int perms = AV_PERM_WRITE;
1492     int i, w, h, stride[4];
1493     unsigned edge;
1494     int pixel_size;
1495
1496     av_assert0(codec->flags & CODEC_FLAG_EMU_EDGE);
1497
1498     if (codec->codec->capabilities & CODEC_CAP_NEG_LINESIZES)
1499         perms |= AV_PERM_NEG_LINESIZES;
1500
1501     if(pic->buffer_hints & FF_BUFFER_HINTS_VALID) {
1502         if(pic->buffer_hints & FF_BUFFER_HINTS_READABLE) perms |= AV_PERM_READ;
1503         if(pic->buffer_hints & FF_BUFFER_HINTS_PRESERVE) perms |= AV_PERM_PRESERVE;
1504         if(pic->buffer_hints & FF_BUFFER_HINTS_REUSABLE) perms |= AV_PERM_REUSE2;
1505     }
1506     if(pic->reference) perms |= AV_PERM_READ | AV_PERM_PRESERVE;
1507
1508     w = codec->width;
1509     h = codec->height;
1510
1511     if(av_image_check_size(w, h, 0, codec))
1512         return -1;
1513
1514     avcodec_align_dimensions2(codec, &w, &h, stride);
1515     edge = codec->flags & CODEC_FLAG_EMU_EDGE ? 0 : avcodec_get_edge_width();
1516     w += edge << 1;
1517     h += edge << 1;
1518
1519     if(!(ref = avfilter_get_video_buffer(ctx->outputs[0], perms, w, h)))
1520         return -1;
1521
1522     pixel_size = av_pix_fmt_descriptors[ref->format].comp[0].step_minus1+1;
1523     ref->video->w = codec->width;
1524     ref->video->h = codec->height;
1525     for(i = 0; i < 4; i ++) {
1526         unsigned hshift = (i == 1 || i == 2) ? av_pix_fmt_descriptors[ref->format].log2_chroma_w : 0;
1527         unsigned vshift = (i == 1 || i == 2) ? av_pix_fmt_descriptors[ref->format].log2_chroma_h : 0;
1528
1529         if (ref->data[i]) {
1530             ref->data[i]    += ((edge * pixel_size) >> hshift) + ((edge * ref->linesize[i]) >> vshift);
1531         }
1532         pic->data[i]     = ref->data[i];
1533         pic->linesize[i] = ref->linesize[i];
1534     }
1535     pic->opaque = ref;
1536     pic->age    = INT_MAX;
1537     pic->type   = FF_BUFFER_TYPE_USER;
1538     pic->reordered_opaque = codec->reordered_opaque;
1539     if(codec->pkt) pic->pkt_pts = codec->pkt->pts;
1540     else           pic->pkt_pts = AV_NOPTS_VALUE;
1541     return 0;
1542 }
1543
1544 static void input_release_buffer(AVCodecContext *codec, AVFrame *pic)
1545 {
1546     memset(pic->data, 0, sizeof(pic->data));
1547     avfilter_unref_buffer(pic->opaque);
1548 }
1549
1550 static int input_reget_buffer(AVCodecContext *codec, AVFrame *pic)
1551 {
1552     AVFilterBufferRef *ref = pic->opaque;
1553
1554     if (pic->data[0] == NULL) {
1555         pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
1556         return codec->get_buffer(codec, pic);
1557     }
1558
1559     if ((codec->width != ref->video->w) || (codec->height != ref->video->h) ||
1560         (codec->pix_fmt != ref->format)) {
1561         av_log(codec, AV_LOG_ERROR, "Picture properties changed.\n");
1562         return -1;
1563     }
1564
1565     pic->reordered_opaque = codec->reordered_opaque;
1566     if(codec->pkt) pic->pkt_pts = codec->pkt->pts;
1567     else           pic->pkt_pts = AV_NOPTS_VALUE;
1568     return 0;
1569 }
1570
1571 static int input_init(AVFilterContext *ctx, const char *args, void *opaque)
1572 {
1573     FilterPriv *priv = ctx->priv;
1574     AVCodecContext *codec;
1575     if(!opaque) return -1;
1576
1577     priv->is = opaque;
1578     codec    = priv->is->video_st->codec;
1579     codec->opaque = ctx;
1580     if((codec->codec->capabilities & CODEC_CAP_DR1)
1581     ) {
1582         av_assert0(codec->flags & CODEC_FLAG_EMU_EDGE);
1583         priv->use_dr1 = 1;
1584         codec->get_buffer     = input_get_buffer;
1585         codec->release_buffer = input_release_buffer;
1586         codec->reget_buffer   = input_reget_buffer;
1587         codec->thread_safe_callbacks = 1;
1588     }
1589
1590     priv->frame = avcodec_alloc_frame();
1591
1592     return 0;
1593 }
1594
1595 static void input_uninit(AVFilterContext *ctx)
1596 {
1597     FilterPriv *priv = ctx->priv;
1598     av_free(priv->frame);
1599 }
1600
1601 static int input_request_frame(AVFilterLink *link)
1602 {
1603     FilterPriv *priv = link->src->priv;
1604     AVFilterBufferRef *picref;
1605     int64_t pts = 0;
1606     AVPacket pkt;
1607     int ret;
1608
1609     while (!(ret = get_video_frame(priv->is, priv->frame, &pts, &pkt)))
1610         av_free_packet(&pkt);
1611     if (ret < 0)
1612         return -1;
1613
1614     if(priv->use_dr1 && priv->frame->opaque) {
1615         picref = avfilter_ref_buffer(priv->frame->opaque, ~0);
1616     } else {
1617         picref = avfilter_get_video_buffer(link, AV_PERM_WRITE, link->w, link->h);
1618         av_image_copy(picref->data, picref->linesize,
1619                       priv->frame->data, priv->frame->linesize,
1620                       picref->format, link->w, link->h);
1621     }
1622     av_free_packet(&pkt);
1623
1624     avfilter_copy_frame_props(picref, priv->frame);
1625     picref->pts = pts;
1626
1627     avfilter_start_frame(link, picref);
1628     avfilter_draw_slice(link, 0, link->h, 1);
1629     avfilter_end_frame(link);
1630
1631     return 0;
1632 }
1633
1634 static int input_query_formats(AVFilterContext *ctx)
1635 {
1636     FilterPriv *priv = ctx->priv;
1637     enum PixelFormat pix_fmts[] = {
1638         priv->is->video_st->codec->pix_fmt, PIX_FMT_NONE
1639     };
1640
1641     avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts));
1642     return 0;
1643 }
1644
1645 static int input_config_props(AVFilterLink *link)
1646 {
1647     FilterPriv *priv  = link->src->priv;
1648     AVStream *s = priv->is->video_st;
1649
1650     link->w = s->codec->width;
1651     link->h = s->codec->height;
1652     link->sample_aspect_ratio = s->sample_aspect_ratio.num ?
1653         s->sample_aspect_ratio : s->codec->sample_aspect_ratio;
1654     link->time_base = s->time_base;
1655
1656     return 0;
1657 }
1658
1659 static AVFilter input_filter =
1660 {
1661     .name      = "ffplay_input",
1662
1663     .priv_size = sizeof(FilterPriv),
1664
1665     .init      = input_init,
1666     .uninit    = input_uninit,
1667
1668     .query_formats = input_query_formats,
1669
1670     .inputs    = (AVFilterPad[]) {{ .name = NULL }},
1671     .outputs   = (AVFilterPad[]) {{ .name = "default",
1672                                     .type = AVMEDIA_TYPE_VIDEO,
1673                                     .request_frame = input_request_frame,
1674                                     .config_props  = input_config_props, },
1675                                   { .name = NULL }},
1676 };
1677
1678 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1679 {
1680     char sws_flags_str[128];
1681     int ret;
1682     enum PixelFormat pix_fmts[] = { PIX_FMT_YUV420P, PIX_FMT_NONE };
1683     AVFilterContext *filt_src = NULL, *filt_out = NULL;
1684     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1685     graph->scale_sws_opts = av_strdup(sws_flags_str);
1686
1687     if ((ret = avfilter_graph_create_filter(&filt_src, &input_filter, "src",
1688                                             NULL, is, graph)) < 0)
1689         return ret;
1690     if ((ret = avfilter_graph_create_filter(&filt_out, avfilter_get_by_name("buffersink"), "out",
1691                                             NULL, pix_fmts, graph)) < 0)
1692         return ret;
1693
1694     if(vfilters) {
1695         AVFilterInOut *outputs = avfilter_inout_alloc();
1696         AVFilterInOut *inputs  = avfilter_inout_alloc();
1697
1698         outputs->name    = av_strdup("in");
1699         outputs->filter_ctx = filt_src;
1700         outputs->pad_idx = 0;
1701         outputs->next    = NULL;
1702
1703         inputs->name    = av_strdup("out");
1704         inputs->filter_ctx = filt_out;
1705         inputs->pad_idx = 0;
1706         inputs->next    = NULL;
1707
1708         if ((ret = avfilter_graph_parse(graph, vfilters, &inputs, &outputs, NULL)) < 0)
1709             return ret;
1710     } else {
1711         if ((ret = avfilter_link(filt_src, 0, filt_out, 0)) < 0)
1712             return ret;
1713     }
1714
1715     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1716         return ret;
1717
1718     is->out_video_filter = filt_out;
1719
1720     return ret;
1721 }
1722
1723 #endif  /* CONFIG_AVFILTER */
1724
1725 static int video_thread(void *arg)
1726 {
1727     VideoState *is = arg;
1728     AVFrame *frame= avcodec_alloc_frame();
1729     int64_t pts_int = AV_NOPTS_VALUE, pos = -1;
1730     double pts;
1731     int ret;
1732
1733 #if CONFIG_AVFILTER
1734     AVFilterGraph *graph = avfilter_graph_alloc();
1735     AVFilterContext *filt_out = NULL;
1736     int last_w = is->video_st->codec->width;
1737     int last_h = is->video_st->codec->height;
1738
1739     if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1740         goto the_end;
1741     filt_out = is->out_video_filter;
1742 #endif
1743
1744     for(;;) {
1745 #if !CONFIG_AVFILTER
1746         AVPacket pkt;
1747 #else
1748         AVFilterBufferRef *picref;
1749         AVRational tb = filt_out->inputs[0]->time_base;
1750 #endif
1751         while (is->paused && !is->videoq.abort_request)
1752             SDL_Delay(10);
1753 #if CONFIG_AVFILTER
1754         if (   last_w != is->video_st->codec->width
1755             || last_h != is->video_st->codec->height) {
1756             av_log(NULL, AV_LOG_INFO, "Frame changed from size:%dx%d to size:%dx%d\n",
1757                    last_w, last_h, is->video_st->codec->width, is->video_st->codec->height);
1758             avfilter_graph_free(&graph);
1759             graph = avfilter_graph_alloc();
1760             if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1761                 goto the_end;
1762             filt_out = is->out_video_filter;
1763             last_w = is->video_st->codec->width;
1764             last_h = is->video_st->codec->height;
1765         }
1766         ret = av_vsink_buffer_get_video_buffer_ref(filt_out, &picref, 0);
1767         if (picref) {
1768             avfilter_fill_frame_from_video_buffer_ref(frame, picref);
1769             pts_int = picref->pts;
1770             pos     = picref->pos;
1771             frame->opaque = picref;
1772         }
1773
1774         if (av_cmp_q(tb, is->video_st->time_base)) {
1775             av_unused int64_t pts1 = pts_int;
1776             pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1777             av_dlog(NULL, "video_thread(): "
1778                     "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1779                     tb.num, tb.den, pts1,
1780                     is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1781         }
1782 #else
1783         ret = get_video_frame(is, frame, &pts_int, &pkt);
1784         pos = pkt.pos;
1785         av_free_packet(&pkt);
1786 #endif
1787
1788         if (ret < 0) goto the_end;
1789
1790 #if CONFIG_AVFILTER
1791         if (!picref)
1792             continue;
1793 #endif
1794
1795         pts = pts_int*av_q2d(is->video_st->time_base);
1796
1797         ret = queue_picture(is, frame, pts, pos);
1798
1799         if (ret < 0)
1800             goto the_end;
1801
1802         if (is->step)
1803             stream_toggle_pause(is);
1804     }
1805  the_end:
1806 #if CONFIG_AVFILTER
1807     avfilter_graph_free(&graph);
1808 #endif
1809     av_free(frame);
1810     return 0;
1811 }
1812
1813 static int subtitle_thread(void *arg)
1814 {
1815     VideoState *is = arg;
1816     SubPicture *sp;
1817     AVPacket pkt1, *pkt = &pkt1;
1818     int got_subtitle;
1819     double pts;
1820     int i, j;
1821     int r, g, b, y, u, v, a;
1822
1823     for(;;) {
1824         while (is->paused && !is->subtitleq.abort_request) {
1825             SDL_Delay(10);
1826         }
1827         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1828             break;
1829
1830         if(pkt->data == flush_pkt.data){
1831             avcodec_flush_buffers(is->subtitle_st->codec);
1832             continue;
1833         }
1834         SDL_LockMutex(is->subpq_mutex);
1835         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1836                !is->subtitleq.abort_request) {
1837             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1838         }
1839         SDL_UnlockMutex(is->subpq_mutex);
1840
1841         if (is->subtitleq.abort_request)
1842             return 0;
1843
1844         sp = &is->subpq[is->subpq_windex];
1845
1846        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1847            this packet, if any */
1848         pts = 0;
1849         if (pkt->pts != AV_NOPTS_VALUE)
1850             pts = av_q2d(is->subtitle_st->time_base)*pkt->pts;
1851
1852         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1853                                  &got_subtitle, pkt);
1854
1855         if (got_subtitle && sp->sub.format == 0) {
1856             sp->pts = pts;
1857
1858             for (i = 0; i < sp->sub.num_rects; i++)
1859             {
1860                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1861                 {
1862                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1863                     y = RGB_TO_Y_CCIR(r, g, b);
1864                     u = RGB_TO_U_CCIR(r, g, b, 0);
1865                     v = RGB_TO_V_CCIR(r, g, b, 0);
1866                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1867                 }
1868             }
1869
1870             /* now we can update the picture count */
1871             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1872                 is->subpq_windex = 0;
1873             SDL_LockMutex(is->subpq_mutex);
1874             is->subpq_size++;
1875             SDL_UnlockMutex(is->subpq_mutex);
1876         }
1877         av_free_packet(pkt);
1878     }
1879     return 0;
1880 }
1881
1882 /* copy samples for viewing in editor window */
1883 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1884 {
1885     int size, len;
1886
1887     size = samples_size / sizeof(short);
1888     while (size > 0) {
1889         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1890         if (len > size)
1891             len = size;
1892         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1893         samples += len;
1894         is->sample_array_index += len;
1895         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1896             is->sample_array_index = 0;
1897         size -= len;
1898     }
1899 }
1900
1901 /* return the new audio buffer size (samples can be added or deleted
1902    to get better sync if video or external master clock) */
1903 static int synchronize_audio(VideoState *is, short *samples,
1904                              int samples_size1, double pts)
1905 {
1906     int n, samples_size;
1907     double ref_clock;
1908
1909     n = 2 * is->audio_st->codec->channels;
1910     samples_size = samples_size1;
1911
1912     /* if not master, then we try to remove or add samples to correct the clock */
1913     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1914          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1915         double diff, avg_diff;
1916         int wanted_size, min_size, max_size, nb_samples;
1917
1918         ref_clock = get_master_clock(is);
1919         diff = get_audio_clock(is) - ref_clock;
1920
1921         if (diff < AV_NOSYNC_THRESHOLD) {
1922             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1923             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1924                 /* not enough measures to have a correct estimate */
1925                 is->audio_diff_avg_count++;
1926             } else {
1927                 /* estimate the A-V difference */
1928                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1929
1930                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1931                     wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1932                     nb_samples = samples_size / n;
1933
1934                     min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1935                     max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1936                     if (wanted_size < min_size)
1937                         wanted_size = min_size;
1938                     else if (wanted_size > max_size)
1939                         wanted_size = max_size;
1940
1941                     /* add or remove samples to correction the synchro */
1942                     if (wanted_size < samples_size) {
1943                         /* remove samples */
1944                         samples_size = wanted_size;
1945                     } else if (wanted_size > samples_size) {
1946                         uint8_t *samples_end, *q;
1947                         int nb;
1948
1949                         /* add samples */
1950                         nb = (samples_size - wanted_size);
1951                         samples_end = (uint8_t *)samples + samples_size - n;
1952                         q = samples_end + n;
1953                         while (nb > 0) {
1954                             memcpy(q, samples_end, n);
1955                             q += n;
1956                             nb -= n;
1957                         }
1958                         samples_size = wanted_size;
1959                     }
1960                 }
1961                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1962                         diff, avg_diff, samples_size - samples_size1,
1963                         is->audio_clock, is->video_clock, is->audio_diff_threshold);
1964             }
1965         } else {
1966             /* too big difference : may be initial PTS errors, so
1967                reset A-V filter */
1968             is->audio_diff_avg_count = 0;
1969             is->audio_diff_cum = 0;
1970         }
1971     }
1972
1973     return samples_size;
1974 }
1975
1976 /* decode one audio frame and returns its uncompressed size */
1977 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1978 {
1979     AVPacket *pkt_temp = &is->audio_pkt_temp;
1980     AVPacket *pkt = &is->audio_pkt;
1981     AVCodecContext *dec= is->audio_st->codec;
1982     int n, len1, data_size;
1983     double pts;
1984
1985     for(;;) {
1986         /* NOTE: the audio packet can contain several frames */
1987         while (pkt_temp->size > 0) {
1988             data_size = sizeof(is->audio_buf1);
1989             len1 = avcodec_decode_audio3(dec,
1990                                         (int16_t *)is->audio_buf1, &data_size,
1991                                         pkt_temp);
1992             if (len1 < 0) {
1993                 /* if error, we skip the frame */
1994                 pkt_temp->size = 0;
1995                 break;
1996             }
1997
1998             pkt_temp->data += len1;
1999             pkt_temp->size -= len1;
2000             if (data_size <= 0)
2001                 continue;
2002
2003             if (dec->sample_fmt != is->audio_src_fmt) {
2004                 if (is->reformat_ctx)
2005                     av_audio_convert_free(is->reformat_ctx);
2006                 is->reformat_ctx= av_audio_convert_alloc(AV_SAMPLE_FMT_S16, 1,
2007                                                          dec->sample_fmt, 1, NULL, 0);
2008                 if (!is->reformat_ctx) {
2009                     fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
2010                         av_get_sample_fmt_name(dec->sample_fmt),
2011                         av_get_sample_fmt_name(AV_SAMPLE_FMT_S16));
2012                         break;
2013                 }
2014                 is->audio_src_fmt= dec->sample_fmt;
2015             }
2016
2017             if (is->reformat_ctx) {
2018                 const void *ibuf[6]= {is->audio_buf1};
2019                 void *obuf[6]= {is->audio_buf2};
2020                 int istride[6]= {av_get_bytes_per_sample(dec->sample_fmt)};
2021                 int ostride[6]= {2};
2022                 int len= data_size/istride[0];
2023                 if (av_audio_convert(is->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
2024                     printf("av_audio_convert() failed\n");
2025                     break;
2026                 }
2027                 is->audio_buf= is->audio_buf2;
2028                 /* FIXME: existing code assume that data_size equals framesize*channels*2
2029                           remove this legacy cruft */
2030                 data_size= len*2;
2031             }else{
2032                 is->audio_buf= is->audio_buf1;
2033             }
2034
2035             /* if no pts, then compute it */
2036             pts = is->audio_clock;
2037             *pts_ptr = pts;
2038             n = 2 * dec->channels;
2039             is->audio_clock += (double)data_size /
2040                 (double)(n * dec->sample_rate);
2041 #ifdef DEBUG
2042             {
2043                 static double last_clock;
2044                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2045                        is->audio_clock - last_clock,
2046                        is->audio_clock, pts);
2047                 last_clock = is->audio_clock;
2048             }
2049 #endif
2050             return data_size;
2051         }
2052
2053         /* free the current packet */
2054         if (pkt->data)
2055             av_free_packet(pkt);
2056
2057         if (is->paused || is->audioq.abort_request) {
2058             return -1;
2059         }
2060
2061         /* read next packet */
2062         if (packet_queue_get(&is->audioq, pkt, 1) < 0)
2063             return -1;
2064         if(pkt->data == flush_pkt.data){
2065             avcodec_flush_buffers(dec);
2066             continue;
2067         }
2068
2069         pkt_temp->data = pkt->data;
2070         pkt_temp->size = pkt->size;
2071
2072         /* if update the audio clock with the pts */
2073         if (pkt->pts != AV_NOPTS_VALUE) {
2074             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2075         }
2076     }
2077 }
2078
2079 /* prepare a new audio buffer */
2080 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2081 {
2082     VideoState *is = opaque;
2083     int audio_size, len1;
2084     int bytes_per_sec;
2085     double pts;
2086
2087     audio_callback_time = av_gettime();
2088
2089     while (len > 0) {
2090         if (is->audio_buf_index >= is->audio_buf_size) {
2091            audio_size = audio_decode_frame(is, &pts);
2092            if (audio_size < 0) {
2093                 /* if error, just output silence */
2094                is->audio_buf = is->audio_buf1;
2095                is->audio_buf_size = 1024;
2096                memset(is->audio_buf, 0, is->audio_buf_size);
2097            } else {
2098                if (is->show_mode != SHOW_MODE_VIDEO)
2099                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2100                audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2101                                               pts);
2102                is->audio_buf_size = audio_size;
2103            }
2104            is->audio_buf_index = 0;
2105         }
2106         len1 = is->audio_buf_size - is->audio_buf_index;
2107         if (len1 > len)
2108             len1 = len;
2109         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2110         len -= len1;
2111         stream += len1;
2112         is->audio_buf_index += len1;
2113     }
2114     bytes_per_sec = is->audio_st->codec->sample_rate *
2115             2 * is->audio_st->codec->channels;
2116     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2117     /* Let's assume the audio driver that is used by SDL has two periods. */
2118     is->audio_current_pts = is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec;
2119     is->audio_current_pts_drift = is->audio_current_pts - audio_callback_time / 1000000.0;
2120 }
2121
2122 /* open a given stream. Return 0 if OK */
2123 static int stream_component_open(VideoState *is, int stream_index)
2124 {
2125     AVFormatContext *ic = is->ic;
2126     AVCodecContext *avctx;
2127     AVCodec *codec;
2128     SDL_AudioSpec wanted_spec, spec;
2129     AVDictionary *opts;
2130     AVDictionaryEntry *t = NULL;
2131
2132     if (stream_index < 0 || stream_index >= ic->nb_streams)
2133         return -1;
2134     avctx = ic->streams[stream_index]->codec;
2135
2136     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index]);
2137
2138     /* prepare audio output */
2139     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2140         if (avctx->channels > 0) {
2141             avctx->request_channels = FFMIN(2, avctx->channels);
2142         } else {
2143             avctx->request_channels = 2;
2144         }
2145     }
2146
2147     codec = avcodec_find_decoder(avctx->codec_id);
2148     if (!codec)
2149         return -1;
2150
2151     avctx->workaround_bugs = workaround_bugs;
2152     avctx->lowres = lowres;
2153     if(lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2154     avctx->idct_algo= idct;
2155     if(fast) avctx->flags2 |= CODEC_FLAG2_FAST;
2156     avctx->skip_frame= skip_frame;
2157     avctx->skip_idct= skip_idct;
2158     avctx->skip_loop_filter= skip_loop_filter;
2159     avctx->error_recognition= error_recognition;
2160     avctx->error_concealment= error_concealment;
2161     avctx->thread_count= thread_count;
2162
2163     if(codec->capabilities & CODEC_CAP_DR1)
2164         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2165
2166     if (!codec ||
2167         avcodec_open2(avctx, codec, &opts) < 0)
2168         return -1;
2169     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2170         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2171         return AVERROR_OPTION_NOT_FOUND;
2172     }
2173
2174     /* prepare audio output */
2175     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2176         if(avctx->sample_rate <= 0 || avctx->channels <= 0){
2177             fprintf(stderr, "Invalid sample rate or channel count\n");
2178             return -1;
2179         }
2180         wanted_spec.freq = avctx->sample_rate;
2181         wanted_spec.format = AUDIO_S16SYS;
2182         wanted_spec.channels = avctx->channels;
2183         wanted_spec.silence = 0;
2184         wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2185         wanted_spec.callback = sdl_audio_callback;
2186         wanted_spec.userdata = is;
2187         if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2188             fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2189             return -1;
2190         }
2191         is->audio_hw_buf_size = spec.size;
2192         is->audio_src_fmt= AV_SAMPLE_FMT_S16;
2193     }
2194
2195     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2196     switch(avctx->codec_type) {
2197     case AVMEDIA_TYPE_AUDIO:
2198         is->audio_stream = stream_index;
2199         is->audio_st = ic->streams[stream_index];
2200         is->audio_buf_size = 0;
2201         is->audio_buf_index = 0;
2202
2203         /* init averaging filter */
2204         is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2205         is->audio_diff_avg_count = 0;
2206         /* since we do not have a precise anough audio fifo fullness,
2207            we correct audio sync only if larger than this threshold */
2208         is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2209
2210         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2211         packet_queue_init(&is->audioq);
2212         SDL_PauseAudio(0);
2213         break;
2214     case AVMEDIA_TYPE_VIDEO:
2215         is->video_stream = stream_index;
2216         is->video_st = ic->streams[stream_index];
2217
2218         packet_queue_init(&is->videoq);
2219         is->video_tid = SDL_CreateThread(video_thread, is);
2220         break;
2221     case AVMEDIA_TYPE_SUBTITLE:
2222         is->subtitle_stream = stream_index;
2223         is->subtitle_st = ic->streams[stream_index];
2224         packet_queue_init(&is->subtitleq);
2225
2226         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2227         break;
2228     default:
2229         break;
2230     }
2231     return 0;
2232 }
2233
2234 static void stream_component_close(VideoState *is, int stream_index)
2235 {
2236     AVFormatContext *ic = is->ic;
2237     AVCodecContext *avctx;
2238
2239     if (stream_index < 0 || stream_index >= ic->nb_streams)
2240         return;
2241     avctx = ic->streams[stream_index]->codec;
2242
2243     switch(avctx->codec_type) {
2244     case AVMEDIA_TYPE_AUDIO:
2245         packet_queue_abort(&is->audioq);
2246
2247         SDL_CloseAudio();
2248
2249         packet_queue_end(&is->audioq);
2250         if (is->reformat_ctx)
2251             av_audio_convert_free(is->reformat_ctx);
2252         is->reformat_ctx = NULL;
2253         break;
2254     case AVMEDIA_TYPE_VIDEO:
2255         packet_queue_abort(&is->videoq);
2256
2257         /* note: we also signal this mutex to make sure we deblock the
2258            video thread in all cases */
2259         SDL_LockMutex(is->pictq_mutex);
2260         SDL_CondSignal(is->pictq_cond);
2261         SDL_UnlockMutex(is->pictq_mutex);
2262
2263         SDL_WaitThread(is->video_tid, NULL);
2264
2265         packet_queue_end(&is->videoq);
2266         break;
2267     case AVMEDIA_TYPE_SUBTITLE:
2268         packet_queue_abort(&is->subtitleq);
2269
2270         /* note: we also signal this mutex to make sure we deblock the
2271            video thread in all cases */
2272         SDL_LockMutex(is->subpq_mutex);
2273         is->subtitle_stream_changed = 1;
2274
2275         SDL_CondSignal(is->subpq_cond);
2276         SDL_UnlockMutex(is->subpq_mutex);
2277
2278         SDL_WaitThread(is->subtitle_tid, NULL);
2279
2280         packet_queue_end(&is->subtitleq);
2281         break;
2282     default:
2283         break;
2284     }
2285
2286     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2287     avcodec_close(avctx);
2288     switch(avctx->codec_type) {
2289     case AVMEDIA_TYPE_AUDIO:
2290         is->audio_st = NULL;
2291         is->audio_stream = -1;
2292         break;
2293     case AVMEDIA_TYPE_VIDEO:
2294         is->video_st = NULL;
2295         is->video_stream = -1;
2296         break;
2297     case AVMEDIA_TYPE_SUBTITLE:
2298         is->subtitle_st = NULL;
2299         is->subtitle_stream = -1;
2300         break;
2301     default:
2302         break;
2303     }
2304 }
2305
2306 /* since we have only one decoding thread, we can use a global
2307    variable instead of a thread local variable */
2308 static VideoState *global_video_state;
2309
2310 static int decode_interrupt_cb(void)
2311 {
2312     return (global_video_state && global_video_state->abort_request);
2313 }
2314
2315 /* this thread gets the stream from the disk or the network */
2316 static int read_thread(void *arg)
2317 {
2318     VideoState *is = arg;
2319     AVFormatContext *ic = NULL;
2320     int err, i, ret;
2321     int st_index[AVMEDIA_TYPE_NB];
2322     AVPacket pkt1, *pkt = &pkt1;
2323     int eof=0;
2324     int pkt_in_play_range = 0;
2325     AVDictionaryEntry *t;
2326     AVDictionary **opts;
2327     int orig_nb_streams;
2328
2329     memset(st_index, -1, sizeof(st_index));
2330     is->video_stream = -1;
2331     is->audio_stream = -1;
2332     is->subtitle_stream = -1;
2333
2334     global_video_state = is;
2335     avio_set_interrupt_cb(decode_interrupt_cb);
2336
2337     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2338     if (err < 0) {
2339         print_error(is->filename, err);
2340         ret = -1;
2341         goto fail;
2342     }
2343     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2344         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2345         ret = AVERROR_OPTION_NOT_FOUND;
2346         goto fail;
2347     }
2348     is->ic = ic;
2349
2350     if(genpts)
2351         ic->flags |= AVFMT_FLAG_GENPTS;
2352
2353     opts = setup_find_stream_info_opts(ic, codec_opts);
2354     orig_nb_streams = ic->nb_streams;
2355
2356     err = avformat_find_stream_info(ic, opts);
2357     if (err < 0) {
2358         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2359         ret = -1;
2360         goto fail;
2361     }
2362     for (i = 0; i < orig_nb_streams; i++)
2363         av_dict_free(&opts[i]);
2364     av_freep(&opts);
2365
2366     if(ic->pb)
2367         ic->pb->eof_reached= 0; //FIXME hack, ffplay maybe should not use url_feof() to test for the end
2368
2369     if(seek_by_bytes<0)
2370         seek_by_bytes= !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2371
2372     /* if seeking requested, we execute it */
2373     if (start_time != AV_NOPTS_VALUE) {
2374         int64_t timestamp;
2375
2376         timestamp = start_time;
2377         /* add the stream start time */
2378         if (ic->start_time != AV_NOPTS_VALUE)
2379             timestamp += ic->start_time;
2380         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2381         if (ret < 0) {
2382             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2383                     is->filename, (double)timestamp / AV_TIME_BASE);
2384         }
2385     }
2386
2387     for (i = 0; i < ic->nb_streams; i++)
2388         ic->streams[i]->discard = AVDISCARD_ALL;
2389     if (!video_disable)
2390         st_index[AVMEDIA_TYPE_VIDEO] =
2391             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2392                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2393     if (!audio_disable)
2394         st_index[AVMEDIA_TYPE_AUDIO] =
2395             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2396                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2397                                 st_index[AVMEDIA_TYPE_VIDEO],
2398                                 NULL, 0);
2399     if (!video_disable)
2400         st_index[AVMEDIA_TYPE_SUBTITLE] =
2401             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2402                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2403                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2404                                  st_index[AVMEDIA_TYPE_AUDIO] :
2405                                  st_index[AVMEDIA_TYPE_VIDEO]),
2406                                 NULL, 0);
2407     if (show_status) {
2408         av_dump_format(ic, 0, is->filename, 0);
2409     }
2410
2411     is->show_mode = show_mode;
2412
2413     /* open the streams */
2414     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2415         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2416     }
2417
2418     ret=-1;
2419     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2420         ret= stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2421     }
2422     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2423     if (is->show_mode == SHOW_MODE_NONE)
2424         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2425
2426     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2427         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2428     }
2429
2430     if (is->video_stream < 0 && is->audio_stream < 0) {
2431         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2432         ret = -1;
2433         goto fail;
2434     }
2435
2436     for(;;) {
2437         if (is->abort_request)
2438             break;
2439         if (is->paused != is->last_paused) {
2440             is->last_paused = is->paused;
2441             if (is->paused)
2442                 is->read_pause_return= av_read_pause(ic);
2443             else
2444                 av_read_play(ic);
2445         }
2446 #if CONFIG_RTSP_DEMUXER
2447         if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2448             /* wait 10 ms to avoid trying to get another packet */
2449             /* XXX: horrible */
2450             SDL_Delay(10);
2451             continue;
2452         }
2453 #endif
2454         if (is->seek_req) {
2455             int64_t seek_target= is->seek_pos;
2456             int64_t seek_min= is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2457             int64_t seek_max= is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2458 //FIXME the +-2 is due to rounding being not done in the correct direction in generation
2459 //      of the seek_pos/seek_rel variables
2460
2461             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2462             if (ret < 0) {
2463                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2464             }else{
2465                 if (is->audio_stream >= 0) {
2466                     packet_queue_flush(&is->audioq);
2467                     packet_queue_put(&is->audioq, &flush_pkt);
2468                 }
2469                 if (is->subtitle_stream >= 0) {
2470                     packet_queue_flush(&is->subtitleq);
2471                     packet_queue_put(&is->subtitleq, &flush_pkt);
2472                 }
2473                 if (is->video_stream >= 0) {
2474                     packet_queue_flush(&is->videoq);
2475                     packet_queue_put(&is->videoq, &flush_pkt);
2476                 }
2477             }
2478             is->seek_req = 0;
2479             eof= 0;
2480         }
2481
2482         /* if the queue are full, no need to read more */
2483         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2484             || (   (is->audioq   .size  > MIN_AUDIOQ_SIZE || is->audio_stream<0)
2485                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream<0)
2486                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream<0))) {
2487             /* wait 10 ms */
2488             SDL_Delay(10);
2489             continue;
2490         }
2491         if(eof) {
2492             if(is->video_stream >= 0){
2493                 av_init_packet(pkt);
2494                 pkt->data=NULL;
2495                 pkt->size=0;
2496                 pkt->stream_index= is->video_stream;
2497                 packet_queue_put(&is->videoq, pkt);
2498             }
2499             SDL_Delay(10);
2500             if(is->audioq.size + is->videoq.size + is->subtitleq.size ==0){
2501                 if(loop!=1 && (!loop || --loop)){
2502                     stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2503                 }else if(autoexit){
2504                     ret=AVERROR_EOF;
2505                     goto fail;
2506                 }
2507             }
2508             eof=0;
2509             continue;
2510         }
2511         ret = av_read_frame(ic, pkt);
2512         if (ret < 0) {
2513             if (ret == AVERROR_EOF || url_feof(ic->pb))
2514                 eof=1;
2515             if (ic->pb && ic->pb->error)
2516                 break;
2517             SDL_Delay(100); /* wait for user event */
2518             continue;
2519         }
2520         /* check if packet is in play range specified by user, then queue, otherwise discard */
2521         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2522                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2523                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2524                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0)/1000000
2525                 <= ((double)duration/1000000);
2526         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2527             packet_queue_put(&is->audioq, pkt);
2528         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2529             packet_queue_put(&is->videoq, pkt);
2530         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2531             packet_queue_put(&is->subtitleq, pkt);
2532         } else {
2533             av_free_packet(pkt);
2534         }
2535     }
2536     /* wait until the end */
2537     while (!is->abort_request) {
2538         SDL_Delay(100);
2539     }
2540
2541     ret = 0;
2542  fail:
2543     /* disable interrupting */
2544     global_video_state = NULL;
2545
2546     /* close each stream */
2547     if (is->audio_stream >= 0)
2548         stream_component_close(is, is->audio_stream);
2549     if (is->video_stream >= 0)
2550         stream_component_close(is, is->video_stream);
2551     if (is->subtitle_stream >= 0)
2552         stream_component_close(is, is->subtitle_stream);
2553     if (is->ic) {
2554         av_close_input_file(is->ic);
2555         is->ic = NULL; /* safety */
2556     }
2557     avio_set_interrupt_cb(NULL);
2558
2559     if (ret != 0) {
2560         SDL_Event event;
2561
2562         event.type = FF_QUIT_EVENT;
2563         event.user.data1 = is;
2564         SDL_PushEvent(&event);
2565     }
2566     return 0;
2567 }
2568
2569 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2570 {
2571     VideoState *is;
2572
2573     is = av_mallocz(sizeof(VideoState));
2574     if (!is)
2575         return NULL;
2576     av_strlcpy(is->filename, filename, sizeof(is->filename));
2577     is->iformat = iformat;
2578     is->ytop = 0;
2579     is->xleft = 0;
2580
2581     /* start video display */
2582     is->pictq_mutex = SDL_CreateMutex();
2583     is->pictq_cond = SDL_CreateCond();
2584
2585     is->subpq_mutex = SDL_CreateMutex();
2586     is->subpq_cond = SDL_CreateCond();
2587
2588     is->av_sync_type = av_sync_type;
2589     is->read_tid = SDL_CreateThread(read_thread, is);
2590     if (!is->read_tid) {
2591         av_free(is);
2592         return NULL;
2593     }
2594     return is;
2595 }
2596
2597 static void stream_cycle_channel(VideoState *is, int codec_type)
2598 {
2599     AVFormatContext *ic = is->ic;
2600     int start_index, stream_index;
2601     AVStream *st;
2602
2603     if (codec_type == AVMEDIA_TYPE_VIDEO)
2604         start_index = is->video_stream;
2605     else if (codec_type == AVMEDIA_TYPE_AUDIO)
2606         start_index = is->audio_stream;
2607     else
2608         start_index = is->subtitle_stream;
2609     if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2610         return;
2611     stream_index = start_index;
2612     for(;;) {
2613         if (++stream_index >= is->ic->nb_streams)
2614         {
2615             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2616             {
2617                 stream_index = -1;
2618                 goto the_end;
2619             } else
2620                 stream_index = 0;
2621         }
2622         if (stream_index == start_index)
2623             return;
2624         st = ic->streams[stream_index];
2625         if (st->codec->codec_type == codec_type) {
2626             /* check that parameters are OK */
2627             switch(codec_type) {
2628             case AVMEDIA_TYPE_AUDIO:
2629                 if (st->codec->sample_rate != 0 &&
2630                     st->codec->channels != 0)
2631                     goto the_end;
2632                 break;
2633             case AVMEDIA_TYPE_VIDEO:
2634             case AVMEDIA_TYPE_SUBTITLE:
2635                 goto the_end;
2636             default:
2637                 break;
2638             }
2639         }
2640     }
2641  the_end:
2642     stream_component_close(is, start_index);
2643     stream_component_open(is, stream_index);
2644 }
2645
2646
2647 static void toggle_full_screen(VideoState *is)
2648 {
2649     is_full_screen = !is_full_screen;
2650     video_open(is);
2651 }
2652
2653 static void toggle_pause(VideoState *is)
2654 {
2655     stream_toggle_pause(is);
2656     is->step = 0;
2657 }
2658
2659 static void step_to_next_frame(VideoState *is)
2660 {
2661     /* if the stream is paused unpause it, then step */
2662     if (is->paused)
2663         stream_toggle_pause(is);
2664     is->step = 1;
2665 }
2666
2667 static void toggle_audio_display(VideoState *is)
2668 {
2669     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2670     is->show_mode = (is->show_mode + 1) % SHOW_MODE_NB;
2671     fill_rectangle(screen,
2672                 is->xleft, is->ytop, is->width, is->height,
2673                 bgcolor);
2674     SDL_UpdateRect(screen, is->xleft, is->ytop, is->width, is->height);
2675 }
2676
2677 /* handle an event sent by the GUI */
2678 static void event_loop(VideoState *cur_stream)
2679 {
2680     SDL_Event event;
2681     double incr, pos, frac;
2682
2683     for(;;) {
2684         double x;
2685         SDL_WaitEvent(&event);
2686         switch(event.type) {
2687         case SDL_KEYDOWN:
2688             if (exit_on_keydown) {
2689                 do_exit(cur_stream);
2690                 break;
2691             }
2692             switch(event.key.keysym.sym) {
2693             case SDLK_ESCAPE:
2694             case SDLK_q:
2695                 do_exit(cur_stream);
2696                 break;
2697             case SDLK_f:
2698                 toggle_full_screen(cur_stream);
2699                 break;
2700             case SDLK_p:
2701             case SDLK_SPACE:
2702                 toggle_pause(cur_stream);
2703                 break;
2704             case SDLK_s: //S: Step to next frame
2705                 step_to_next_frame(cur_stream);
2706                 break;
2707             case SDLK_a:
2708                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2709                 break;
2710             case SDLK_v:
2711                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2712                 break;
2713             case SDLK_t:
2714                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2715                 break;
2716             case SDLK_w:
2717                 toggle_audio_display(cur_stream);
2718                 break;
2719             case SDLK_LEFT:
2720                 incr = -10.0;
2721                 goto do_seek;
2722             case SDLK_RIGHT:
2723                 incr = 10.0;
2724                 goto do_seek;
2725             case SDLK_UP:
2726                 incr = 60.0;
2727                 goto do_seek;
2728             case SDLK_DOWN:
2729                 incr = -60.0;
2730             do_seek:
2731                 if (seek_by_bytes) {
2732                     if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos>=0){
2733                         pos= cur_stream->video_current_pos;
2734                     }else if(cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos>=0){
2735                         pos= cur_stream->audio_pkt.pos;
2736                     }else
2737                         pos = avio_tell(cur_stream->ic->pb);
2738                     if (cur_stream->ic->bit_rate)
2739                         incr *= cur_stream->ic->bit_rate / 8.0;
2740                     else
2741                         incr *= 180000.0;
2742                     pos += incr;
2743                     stream_seek(cur_stream, pos, incr, 1);
2744                 } else {
2745                     pos = get_master_clock(cur_stream);
2746                     pos += incr;
2747                     stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2748                 }
2749                 break;
2750             default:
2751                 break;
2752             }
2753             break;
2754         case SDL_MOUSEBUTTONDOWN:
2755             if (exit_on_mousedown) {
2756                 do_exit(cur_stream);
2757                 break;
2758             }
2759         case SDL_MOUSEMOTION:
2760             if(event.type ==SDL_MOUSEBUTTONDOWN){
2761                 x= event.button.x;
2762             }else{
2763                 if(event.motion.state != SDL_PRESSED)
2764                     break;
2765                 x= event.motion.x;
2766             }
2767             if(seek_by_bytes || cur_stream->ic->duration<=0){
2768                 uint64_t size=  avio_size(cur_stream->ic->pb);
2769                 stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2770             }else{
2771                 int64_t ts;
2772                 int ns, hh, mm, ss;
2773                 int tns, thh, tmm, tss;
2774                 tns = cur_stream->ic->duration/1000000LL;
2775                 thh = tns/3600;
2776                 tmm = (tns%3600)/60;
2777                 tss = (tns%60);
2778                 frac = x/cur_stream->width;
2779                 ns = frac*tns;
2780                 hh = ns/3600;
2781                 mm = (ns%3600)/60;
2782                 ss = (ns%60);
2783                 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2784                         hh, mm, ss, thh, tmm, tss);
2785                 ts = frac*cur_stream->ic->duration;
2786                 if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2787                     ts += cur_stream->ic->start_time;
2788                 stream_seek(cur_stream, ts, 0, 0);
2789             }
2790             break;
2791         case SDL_VIDEORESIZE:
2792             screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2793                                       SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2794             screen_width = cur_stream->width = event.resize.w;
2795             screen_height= cur_stream->height= event.resize.h;
2796             break;
2797         case SDL_QUIT:
2798         case FF_QUIT_EVENT:
2799             do_exit(cur_stream);
2800             break;
2801         case FF_ALLOC_EVENT:
2802             video_open(event.user.data1);
2803             alloc_picture(event.user.data1);
2804             break;
2805         case FF_REFRESH_EVENT:
2806             video_refresh(event.user.data1);
2807             cur_stream->refresh=0;
2808             break;
2809         default:
2810             break;
2811         }
2812     }
2813 }
2814
2815 static int opt_frame_size(const char *opt, const char *arg)
2816 {
2817     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
2818     return opt_default("video_size", arg);
2819 }
2820
2821 static int opt_width(const char *opt, const char *arg)
2822 {
2823     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2824     return 0;
2825 }
2826
2827 static int opt_height(const char *opt, const char *arg)
2828 {
2829     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2830     return 0;
2831 }
2832
2833 static int opt_format(const char *opt, const char *arg)
2834 {
2835     file_iformat = av_find_input_format(arg);
2836     if (!file_iformat) {
2837         fprintf(stderr, "Unknown input format: %s\n", arg);
2838         return AVERROR(EINVAL);
2839     }
2840     return 0;
2841 }
2842
2843 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2844 {
2845     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
2846     return opt_default("pixel_format", arg);
2847 }
2848
2849 static int opt_sync(const char *opt, const char *arg)
2850 {
2851     if (!strcmp(arg, "audio"))
2852         av_sync_type = AV_SYNC_AUDIO_MASTER;
2853     else if (!strcmp(arg, "video"))
2854         av_sync_type = AV_SYNC_VIDEO_MASTER;
2855     else if (!strcmp(arg, "ext"))
2856         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2857     else {
2858         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2859         exit(1);
2860     }
2861     return 0;
2862 }
2863
2864 static int opt_seek(const char *opt, const char *arg)
2865 {
2866     start_time = parse_time_or_die(opt, arg, 1);
2867     return 0;
2868 }
2869
2870 static int opt_duration(const char *opt, const char *arg)
2871 {
2872     duration = parse_time_or_die(opt, arg, 1);
2873     return 0;
2874 }
2875
2876 static int opt_thread_count(const char *opt, const char *arg)
2877 {
2878     thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2879 #if !HAVE_THREADS
2880     fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2881 #endif
2882     return 0;
2883 }
2884
2885 static int opt_show_mode(const char *opt, const char *arg)
2886 {
2887     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
2888                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
2889                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
2890                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
2891     return 0;
2892 }
2893
2894 static int opt_input_file(const char *opt, const char *filename)
2895 {
2896     if (input_filename) {
2897         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2898                 filename, input_filename);
2899         exit(1);
2900     }
2901     if (!strcmp(filename, "-"))
2902         filename = "pipe:";
2903     input_filename = filename;
2904     return 0;
2905 }
2906
2907 static const OptionDef options[] = {
2908 #include "cmdutils_common_opts.h"
2909     { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
2910     { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
2911     { "s", HAS_ARG | OPT_VIDEO, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
2912     { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
2913     { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
2914     { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
2915     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_AUDIO]}, "select desired audio stream", "stream_number" },
2916     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_VIDEO]}, "select desired video stream", "stream_number" },
2917     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE]}, "select desired subtitle stream", "stream_number" },
2918     { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
2919     { "t", HAS_ARG, {(void*)&opt_duration}, "play  \"duration\" seconds of audio/video", "duration" },
2920     { "bytes", OPT_INT | HAS_ARG, {(void*)&seek_by_bytes}, "seek by bytes 0=off 1=on -1=auto", "val" },
2921     { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
2922     { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
2923     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_frame_pix_fmt}, "set pixel format", "format" },
2924     { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
2925     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
2926     { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
2927     { "genpts", OPT_BOOL | OPT_EXPERT, {(void*)&genpts}, "generate pts", "" },
2928     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&decoder_reorder_pts}, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2929     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
2930     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_loop_filter}, "", "" },
2931     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_frame}, "", "" },
2932     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&skip_idct}, "", "" },
2933     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo",  "algo" },
2934     { "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_recognition}, "set error detection threshold (0-4)",  "threshold" },
2935     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options",  "bit_mask" },
2936     { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
2937     { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
2938     { "autoexit", OPT_BOOL | OPT_EXPERT, {(void*)&autoexit}, "exit at the end", "" },
2939     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, {(void*)&exit_on_keydown}, "exit on key down", "" },
2940     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, {(void*)&exit_on_mousedown}, "exit on mouse down", "" },
2941     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&loop}, "set number of times the playback shall be looped", "loop count" },
2942     { "framedrop", OPT_BOOL | OPT_EXPERT, {(void*)&framedrop}, "drop frames when cpu is too slow", "" },
2943     { "window_title", OPT_STRING | HAS_ARG, {(void*)&window_title}, "set window title", "window title" },
2944 #if CONFIG_AVFILTER
2945     { "vf", OPT_STRING | HAS_ARG, {(void*)&vfilters}, "video filters", "filter list" },
2946 #endif
2947     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, {(void*)&rdftspeed}, "rdft speed", "msecs" },
2948     { "showmode", HAS_ARG, {(void*)opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
2949     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
2950     { "i", HAS_ARG, {(void *)opt_input_file}, "read specified file", "input_file"},
2951     { NULL, },
2952 };
2953
2954 static void show_usage(void)
2955 {
2956     printf("Simple media player\n");
2957     printf("usage: %s [options] input_file\n", program_name);
2958     printf("\n");
2959 }
2960
2961 static int opt_help(const char *opt, const char *arg)
2962 {
2963     av_log_set_callback(log_callback_help);
2964     show_usage();
2965     show_help_options(options, "Main options:\n",
2966                       OPT_EXPERT, 0);
2967     show_help_options(options, "\nAdvanced options:\n",
2968                       OPT_EXPERT, OPT_EXPERT);
2969     printf("\n");
2970     av_opt_show2(avcodec_opts[0], NULL,
2971                  AV_OPT_FLAG_DECODING_PARAM, 0);
2972     printf("\n");
2973     av_opt_show2(avformat_opts, NULL,
2974                  AV_OPT_FLAG_DECODING_PARAM, 0);
2975 #if !CONFIG_AVFILTER
2976     printf("\n");
2977     av_opt_show2(sws_opts, NULL,
2978                  AV_OPT_FLAG_ENCODING_PARAM, 0);
2979 #endif
2980     printf("\nWhile playing:\n"
2981            "q, ESC              quit\n"
2982            "f                   toggle full screen\n"
2983            "p, SPC              pause\n"
2984            "a                   cycle audio channel\n"
2985            "v                   cycle video channel\n"
2986            "t                   cycle subtitle channel\n"
2987            "w                   show audio waves\n"
2988            "s                   activate frame-step mode\n"
2989            "left/right          seek backward/forward 10 seconds\n"
2990            "down/up             seek backward/forward 1 minute\n"
2991            "mouse click         seek to percentage in file corresponding to fraction of width\n"
2992            );
2993     return 0;
2994 }
2995
2996 static int lockmgr(void **mtx, enum AVLockOp op)
2997 {
2998    switch(op) {
2999       case AV_LOCK_CREATE:
3000           *mtx = SDL_CreateMutex();
3001           if(!*mtx)
3002               return 1;
3003           return 0;
3004       case AV_LOCK_OBTAIN:
3005           return !!SDL_LockMutex(*mtx);
3006       case AV_LOCK_RELEASE:
3007           return !!SDL_UnlockMutex(*mtx);
3008       case AV_LOCK_DESTROY:
3009           SDL_DestroyMutex(*mtx);
3010           return 0;
3011    }
3012    return 1;
3013 }
3014
3015 /* Called from the main */
3016 int main(int argc, char **argv)
3017 {
3018     int flags;
3019     VideoState *is;
3020
3021     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3022
3023     /* register all codecs, demux and protocols */
3024     avcodec_register_all();
3025 #if CONFIG_AVDEVICE
3026     avdevice_register_all();
3027 #endif
3028 #if CONFIG_AVFILTER
3029     avfilter_register_all();
3030 #endif
3031     av_register_all();
3032
3033     init_opts();
3034
3035     show_banner();
3036
3037     parse_options(argc, argv, options, opt_input_file);
3038
3039     if (!input_filename) {
3040         show_usage();
3041         fprintf(stderr, "An input file must be specified\n");
3042         fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3043         exit(1);
3044     }
3045
3046     if (display_disable) {
3047         video_disable = 1;
3048     }
3049     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3050     if (audio_disable)
3051         flags &= ~SDL_INIT_AUDIO;
3052 #if !defined(__MINGW32__) && !defined(__APPLE__)
3053     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3054 #endif
3055     if (SDL_Init (flags)) {
3056         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3057         fprintf(stderr, "(Did you set the DISPLAY variable?)\n");
3058         exit(1);
3059     }
3060
3061     if (!display_disable) {
3062 #if HAVE_SDL_VIDEO_SIZE
3063         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3064         fs_screen_width = vi->current_w;
3065         fs_screen_height = vi->current_h;
3066 #endif
3067     }
3068
3069     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3070     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3071     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3072
3073     if (av_lockmgr_register(lockmgr)) {
3074         fprintf(stderr, "Could not initialize lock manager!\n");
3075         do_exit(NULL);
3076     }
3077
3078     av_init_packet(&flush_pkt);
3079     flush_pkt.data= "FLUSH";
3080
3081     is = stream_open(input_filename, file_iformat);
3082     if (!is) {
3083         fprintf(stderr, "Failed to initialize VideoState!\n");
3084         do_exit(NULL);
3085     }
3086
3087     event_loop(is);
3088
3089     /* never returns */
3090
3091     return 0;
3092 }