#define VIDEO_PICTURE_QUEUE_SIZE 3
#define SUBPICTURE_QUEUE_SIZE 16
-
-typedef struct VideoPicture {
- double pts; // presentation timestamp for this picture
- double duration; // estimated duration based on frame rate
- int64_t pos; // byte position in file
- SDL_Overlay *bmp;
- int width, height; /* source height & width */
- int allocated;
- int reallocate;
- int serial;
-
- AVRational sar;
-} VideoPicture;
-
-typedef struct SubPicture {
- double pts; /* presentation time stamp for this picture */
- AVSubtitle sub;
- int serial;
-} SubPicture;
+#define FRAME_QUEUE_SIZE FFMAX(VIDEO_PICTURE_QUEUE_SIZE, SUBPICTURE_QUEUE_SIZE)
typedef struct AudioParams {
int freq;
int *queue_serial; /* pointer to the current packet queue serial, used for obsolete clock detection */
} Clock;
+/* Common struct for handling all types of decoded data and allocated render buffers. */
+typedef struct Frame {
+ AVFrame *frame;
+ AVSubtitle sub;
+ int serial;
+ double pts; /* presentation timestamp for the frame */
+ double duration; /* estimated duration of the frame */
+ int64_t pos; /* byte position of the frame in the input file */
+ SDL_Overlay *bmp;
+ int allocated;
+ int reallocate;
+ int width;
+ int height;
+ AVRational sar;
+} Frame;
+
+typedef struct FrameQueue {
+ Frame queue[FRAME_QUEUE_SIZE];
+ int rindex;
+ int windex;
+ int size;
+ int max_size;
+ int keep_last;
+ int rindex_shown;
+ SDL_mutex *mutex;
+ SDL_cond *cond;
+ PacketQueue *pktq;
+} FrameQueue;
+
enum {
AV_SYNC_AUDIO_MASTER, /* default choice */
AV_SYNC_VIDEO_MASTER,
Clock vidclk;
Clock extclk;
+ FrameQueue pictq;
+ FrameQueue subpq;
+
int audio_stream;
int av_sync_type;
int subtitle_stream;
AVStream *subtitle_st;
PacketQueue subtitleq;
- SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
- int subpq_size, subpq_rindex, subpq_windex;
- SDL_mutex *subpq_mutex;
- SDL_cond *subpq_cond;
double frame_timer;
double frame_last_returned_time;
PacketQueue videoq;
int64_t video_current_pos; // current displayed file pos
double max_frame_duration; // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
- VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
- int pictq_size, pictq_rindex, pictq_windex, pictq_rindex_shown;
- SDL_mutex *pictq_mutex;
- SDL_cond *pictq_cond;
#if !CONFIG_AVFILTER
struct SwsContext *img_convert_ctx;
#endif
return 0;
}
+static void free_picture(Frame *vp);
+
static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
{
MyAVPacketList *pkt1;
return ret;
}
+static void frame_queue_unref_item(Frame *vp)
+{
+ av_frame_unref(vp->frame);
+ avsubtitle_free(&vp->sub);
+}
+
+static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
+{
+ int i;
+ memset(f, 0, sizeof(FrameQueue));
+ if (!(f->mutex = SDL_CreateMutex()))
+ return AVERROR(ENOMEM);
+ if (!(f->cond = SDL_CreateCond()))
+ return AVERROR(ENOMEM);
+ f->pktq = pktq;
+ f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
+ f->keep_last = !!keep_last;
+ for (i = 0; i < f->max_size; i++)
+ if (!(f->queue[i].frame = av_frame_alloc()))
+ return AVERROR(ENOMEM);
+ return 0;
+}
+
+static void frame_queue_destory(FrameQueue *f)
+{
+ int i;
+ for (i = 0; i < f->max_size; i++) {
+ Frame *vp = &f->queue[i];
+ frame_queue_unref_item(vp);
+ av_frame_free(&vp->frame);
+ free_picture(vp);
+ }
+ SDL_DestroyMutex(f->mutex);
+ SDL_DestroyCond(f->cond);
+}
+
+static void frame_queue_signal(FrameQueue *f)
+{
+ SDL_LockMutex(f->mutex);
+ SDL_CondSignal(f->cond);
+ SDL_UnlockMutex(f->mutex);
+}
+
+static Frame *frame_queue_peek(FrameQueue *f)
+{
+ return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
+}
+
+static Frame *frame_queue_peek_next(FrameQueue *f)
+{
+ return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
+}
+
+static Frame *frame_queue_peek_last(FrameQueue *f)
+{
+ return &f->queue[f->rindex];
+}
+
+static Frame *frame_queue_peek_writable(FrameQueue *f)
+{
+ /* wait until we have space to put a new frame */
+ SDL_LockMutex(f->mutex);
+ while (f->size >= f->max_size &&
+ !f->pktq->abort_request) {
+ SDL_CondWait(f->cond, f->mutex);
+ }
+ SDL_UnlockMutex(f->mutex);
+
+ if (f->pktq->abort_request)
+ return NULL;
+
+ return &f->queue[f->windex];
+}
+
+static void frame_queue_push(FrameQueue *f)
+{
+ if (++f->windex == f->max_size)
+ f->windex = 0;
+ SDL_LockMutex(f->mutex);
+ f->size++;
+ SDL_UnlockMutex(f->mutex);
+}
+
+static void frame_queue_next(FrameQueue *f)
+{
+ if (f->keep_last && !f->rindex_shown) {
+ f->rindex_shown = 1;
+ return;
+ }
+ frame_queue_unref_item(&f->queue[f->rindex]);
+ if (++f->rindex == f->max_size)
+ f->rindex = 0;
+ SDL_LockMutex(f->mutex);
+ f->size--;
+ SDL_CondSignal(f->cond);
+ SDL_UnlockMutex(f->mutex);
+}
+
+/* jump back to the previous frame if available by resetting rindex_shown */
+static int frame_queue_prev(FrameQueue *f)
+{
+ int ret = f->rindex_shown;
+ f->rindex_shown = 0;
+ return ret;
+}
+
+/* return the number of undisplayed frames in the queue */
+static int frame_queue_nb_remaining(FrameQueue *f)
+{
+ return f->size - f->rindex_shown;
+}
+
static inline void fill_rectangle(SDL_Surface *screen,
int x, int y, int w, int h, int color, int update)
{
}
}
-static void free_picture(VideoPicture *vp)
+static void free_picture(Frame *vp)
{
if (vp->bmp) {
SDL_FreeYUVOverlay(vp->bmp);
}
}
-static void free_subpicture(SubPicture *sp)
-{
- avsubtitle_free(&sp->sub);
-}
-
static void calculate_display_rect(SDL_Rect *rect,
int scr_xleft, int scr_ytop, int scr_width, int scr_height,
int pic_width, int pic_height, AVRational pic_sar)
static void video_image_display(VideoState *is)
{
- VideoPicture *vp;
- SubPicture *sp;
+ Frame *vp;
+ Frame *sp;
AVPicture pict;
SDL_Rect rect;
int i;
- vp = &is->pictq[(is->pictq_rindex + is->pictq_rindex_shown) % VIDEO_PICTURE_QUEUE_SIZE];
+ vp = frame_queue_peek(&is->pictq);
if (vp->bmp) {
if (is->subtitle_st) {
- if (is->subpq_size > 0) {
- sp = &is->subpq[is->subpq_rindex];
+ if (frame_queue_nb_remaining(&is->subpq) > 0) {
+ sp = frame_queue_peek(&is->subpq);
if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
SDL_LockYUVOverlay (vp->bmp);
static void stream_close(VideoState *is)
{
- int i;
/* XXX: use a special url_shutdown call to abort parse cleanly */
is->abort_request = 1;
SDL_WaitThread(is->read_tid, NULL);
packet_queue_destroy(&is->subtitleq);
/* free all pictures */
- for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
- free_picture(&is->pictq[i]);
- for (i = 0; i < SUBPICTURE_QUEUE_SIZE; i++)
- free_subpicture(&is->subpq[i]);
- SDL_DestroyMutex(is->pictq_mutex);
- SDL_DestroyCond(is->pictq_cond);
- SDL_DestroyMutex(is->subpq_mutex);
- SDL_DestroyCond(is->subpq_cond);
+ frame_queue_destory(&is->pictq);
+ frame_queue_destory(&is->subpq);
SDL_DestroyCond(is->continue_read_thread);
#if !CONFIG_AVFILTER
sws_freeContext(is->img_convert_ctx);
default_height = rect.h;
}
-static int video_open(VideoState *is, int force_set_video_mode, VideoPicture *vp)
+static int video_open(VideoState *is, int force_set_video_mode, Frame *vp)
{
int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
int w,h;
return delay;
}
-static double vp_duration(VideoState *is, VideoPicture *vp, VideoPicture *nextvp) {
+static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
if (vp->serial == nextvp->serial) {
double duration = nextvp->pts - vp->pts;
if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
}
}
-/* return the number of undisplayed pictures in the queue */
-static int pictq_nb_remaining(VideoState *is) {
- return is->pictq_size - is->pictq_rindex_shown;
-}
-
-/* jump back to the previous picture if available by resetting rindex_shown */
-static int pictq_prev_picture(VideoState *is) {
- int ret = is->pictq_rindex_shown;
- is->pictq_rindex_shown = 0;
- return ret;
-}
-
-static void pictq_next_picture(VideoState *is) {
- if (!is->pictq_rindex_shown) {
- is->pictq_rindex_shown = 1;
- return;
- }
- /* update queue size and signal for next picture */
- if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
- is->pictq_rindex = 0;
-
- SDL_LockMutex(is->pictq_mutex);
- is->pictq_size--;
- SDL_CondSignal(is->pictq_cond);
- SDL_UnlockMutex(is->pictq_mutex);
-}
-
static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
/* update current video pts */
set_clock(&is->vidclk, pts, serial);
VideoState *is = opaque;
double time;
- SubPicture *sp, *sp2;
+ Frame *sp, *sp2;
if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
check_external_clock_speed(is);
if (is->video_st) {
int redisplay = 0;
if (is->force_refresh)
- redisplay = pictq_prev_picture(is);
+ redisplay = frame_queue_prev(&is->pictq);
retry:
- if (pictq_nb_remaining(is) == 0) {
+ if (frame_queue_nb_remaining(&is->pictq) == 0) {
// nothing to do, no picture to display in the queue
} else {
double last_duration, duration, delay;
- VideoPicture *vp, *lastvp;
+ Frame *vp, *lastvp;
/* dequeue the picture */
- lastvp = &is->pictq[is->pictq_rindex];
- vp = &is->pictq[(is->pictq_rindex + is->pictq_rindex_shown) % VIDEO_PICTURE_QUEUE_SIZE];
+ lastvp = frame_queue_peek_last(&is->pictq);
+ vp = frame_queue_peek(&is->pictq);
if (vp->serial != is->videoq.serial) {
- pictq_next_picture(is);
+ frame_queue_next(&is->pictq);
is->video_current_pos = -1;
redisplay = 0;
goto retry;
if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
is->frame_timer = time;
- SDL_LockMutex(is->pictq_mutex);
+ SDL_LockMutex(is->pictq.mutex);
if (!redisplay && !isnan(vp->pts))
update_video_pts(is, vp->pts, vp->pos, vp->serial);
- SDL_UnlockMutex(is->pictq_mutex);
+ SDL_UnlockMutex(is->pictq.mutex);
- if (pictq_nb_remaining(is) > 1) {
- VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + is->pictq_rindex_shown + 1) % VIDEO_PICTURE_QUEUE_SIZE];
+ if (frame_queue_nb_remaining(&is->pictq) > 1) {
+ Frame *nextvp = frame_queue_peek_next(&is->pictq);
duration = vp_duration(is, vp, nextvp);
if(!is->step && (redisplay || framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
if (!redisplay)
is->frame_drops_late++;
- pictq_next_picture(is);
+ frame_queue_next(&is->pictq);
redisplay = 0;
goto retry;
}
}
if (is->subtitle_st) {
- while (is->subpq_size > 0) {
- sp = &is->subpq[is->subpq_rindex];
+ while (frame_queue_nb_remaining(&is->subpq) > 0) {
+ sp = frame_queue_peek(&is->subpq);
- if (is->subpq_size > 1)
- sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
+ if (frame_queue_nb_remaining(&is->subpq) > 1)
+ sp2 = frame_queue_peek_next(&is->subpq);
else
sp2 = NULL;
|| (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
|| (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
{
- free_subpicture(sp);
-
- /* update queue size and signal for next picture */
- if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
- is->subpq_rindex = 0;
-
- SDL_LockMutex(is->subpq_mutex);
- is->subpq_size--;
- SDL_CondSignal(is->subpq_cond);
- SDL_UnlockMutex(is->subpq_mutex);
+ frame_queue_next(&is->subpq);
} else {
break;
}
if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
video_display(is);
- pictq_next_picture(is);
+ frame_queue_next(&is->pictq);
if (is->step && !is->paused)
stream_toggle_pause(is);
potential locking problems */
static void alloc_picture(VideoState *is)
{
- VideoPicture *vp;
+ Frame *vp;
int64_t bufferdiff;
- vp = &is->pictq[is->pictq_windex];
+ vp = &is->pictq.queue[is->pictq.windex];
free_picture(vp);
do_exit(is);
}
- SDL_LockMutex(is->pictq_mutex);
+ SDL_LockMutex(is->pictq.mutex);
vp->allocated = 1;
- SDL_CondSignal(is->pictq_cond);
- SDL_UnlockMutex(is->pictq_mutex);
+ SDL_CondSignal(is->pictq.cond);
+ SDL_UnlockMutex(is->pictq.mutex);
}
static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
{
- VideoPicture *vp;
+ Frame *vp;
#if defined(DEBUG_SYNC) && 0
printf("frame_type=%c pts=%0.3f\n",
av_get_picture_type_char(src_frame->pict_type), pts);
#endif
- /* wait until we have space to put a new picture */
- SDL_LockMutex(is->pictq_mutex);
-
- while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
- !is->videoq.abort_request) {
- SDL_CondWait(is->pictq_cond, is->pictq_mutex);
- }
- SDL_UnlockMutex(is->pictq_mutex);
-
- if (is->videoq.abort_request)
+ if (!(vp = frame_queue_peek_writable(&is->pictq)))
return -1;
- vp = &is->pictq[is->pictq_windex];
-
vp->sar = src_frame->sample_aspect_ratio;
/* alloc or resize hardware picture buffer */
SDL_PushEvent(&event);
/* wait until the picture is allocated */
- SDL_LockMutex(is->pictq_mutex);
+ SDL_LockMutex(is->pictq.mutex);
while (!vp->allocated && !is->videoq.abort_request) {
- SDL_CondWait(is->pictq_cond, is->pictq_mutex);
+ SDL_CondWait(is->pictq.cond, is->pictq.mutex);
}
/* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
while (!vp->allocated && !is->abort_request) {
- SDL_CondWait(is->pictq_cond, is->pictq_mutex);
+ SDL_CondWait(is->pictq.cond, is->pictq.mutex);
}
}
- SDL_UnlockMutex(is->pictq_mutex);
+ SDL_UnlockMutex(is->pictq.mutex);
if (is->videoq.abort_request)
return -1;
vp->serial = serial;
/* now we can update the picture count */
- if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
- is->pictq_windex = 0;
- SDL_LockMutex(is->pictq_mutex);
- is->pictq_size++;
- SDL_UnlockMutex(is->pictq_mutex);
+ frame_queue_push(&is->pictq);
}
return 0;
}
static int subtitle_thread(void *arg)
{
VideoState *is = arg;
- SubPicture *sp;
+ Frame *sp;
AVPacket pkt1, *pkt = &pkt1;
int got_subtitle;
int serial;
avcodec_flush_buffers(is->subtitle_st->codec);
continue;
}
- SDL_LockMutex(is->subpq_mutex);
- while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
- !is->subtitleq.abort_request) {
- SDL_CondWait(is->subpq_cond, is->subpq_mutex);
- }
- SDL_UnlockMutex(is->subpq_mutex);
- if (is->subtitleq.abort_request)
+ if (!(sp = frame_queue_peek_writable(&is->subpq)))
return 0;
- sp = &is->subpq[is->subpq_windex];
-
/* NOTE: ipts is the PTS of the _first_ picture beginning in
this packet, if any */
pts = 0;
}
/* now we can update the picture count */
- if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
- is->subpq_windex = 0;
- SDL_LockMutex(is->subpq_mutex);
- is->subpq_size++;
- SDL_UnlockMutex(is->subpq_mutex);
+ frame_queue_push(&is->subpq);
} else if (got_subtitle) {
avsubtitle_free(&sp->sub);
}
/* note: we also signal this mutex to make sure we deblock the
video thread in all cases */
- SDL_LockMutex(is->pictq_mutex);
- SDL_CondSignal(is->pictq_cond);
- SDL_UnlockMutex(is->pictq_mutex);
+ frame_queue_signal(&is->pictq);
SDL_WaitThread(is->video_tid, NULL);
/* note: we also signal this mutex to make sure we deblock the
video thread in all cases */
- SDL_LockMutex(is->subpq_mutex);
- SDL_CondSignal(is->subpq_cond);
- SDL_UnlockMutex(is->subpq_mutex);
+ frame_queue_signal(&is->subpq);
SDL_WaitThread(is->subtitle_tid, NULL);
}
if (!is->paused &&
(!is->audio_st || is->audio_finished == is->audioq.serial) &&
- (!is->video_st || (is->video_finished == is->videoq.serial && pictq_nb_remaining(is) == 0))) {
+ (!is->video_st || (is->video_finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
if (loop != 1 && (!loop || --loop)) {
stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
} else if (autoexit) {
is->xleft = 0;
/* start video display */
- is->pictq_mutex = SDL_CreateMutex();
- is->pictq_cond = SDL_CreateCond();
-
- is->subpq_mutex = SDL_CreateMutex();
- is->subpq_cond = SDL_CreateCond();
+ if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
+ goto fail;
+ if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
+ goto fail;
packet_queue_init(&is->videoq);
packet_queue_init(&is->audioq);
is->av_sync_type = av_sync_type;
is->read_tid = SDL_CreateThread(read_thread, is);
if (!is->read_tid) {
- av_free(is);
+fail:
+ stream_close(is);
return NULL;
}
return is;