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Code Issues Releases Activity

Merge remote-tracking branch 'cus/stable'

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* cus/stable:
  ffplay: if there is no audio stream, use external clock by default
  ffplay: use get_master_sync_type where necessary
  ffplay: add get_master_sync_type function
  ffplay: only check external clock if current frame serial matches the displayed frame serial
  ffplay: add serial field to PacketQueue entry and populate it
  ffplay: fix external time sync mode
  ffplay: initialize audio and video pts drift
  ffplay: fix nosync threshold check in synchronize_audio
  ffplay: use framedrop by default when sync is not done to video

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-10-21 18:56:50 +02:00
commit 747a00b688
1 changed files with 92 additions and 40 deletions
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132
ffplay.c
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@ -87,11 +87,18 @@ const int program_birth_year = 2003;
static int sws_flags = SWS_BICUBIC;
typedef struct MyAVPacketList {
AVPacket pkt;
struct MyAVPacketList *next;
int serial;
} MyAVPacketList;
typedef struct PacketQueue {
AVPacketList *first_pkt, *last_pkt;
MyAVPacketList *first_pkt, *last_pkt;
int nb_packets;
int size;
int abort_request;
int serial;
SDL_mutex *mutex;
SDL_cond *cond;
} PacketQueue;
@ -108,6 +115,7 @@ typedef struct VideoPicture {
AVRational sample_aspect_ratio;
int allocated;
int reallocate;
int serial;
#if CONFIG_AVFILTER
AVFilterBufferRef *picref;
@ -153,8 +161,9 @@ typedef struct VideoState {
int audio_stream;
int av_sync_type;
double external_clock; /* external clock base */
int64_t external_clock_time;
double external_clock; ///< external clock base
double external_clock_drift; ///< external clock base - time (av_gettime) at which we updated external_clock
int64_t external_clock_time; ///< last reference time
double audio_clock;
double audio_diff_cum; /* used for AV difference average computation */
@ -173,6 +182,7 @@ typedef struct VideoState {
int audio_write_buf_size;
AVPacket audio_pkt_temp;
AVPacket audio_pkt;
int audio_pkt_temp_serial;
struct AudioParams audio_src;
struct AudioParams audio_tgt;
struct SwrContext *swr_ctx;
@ -304,16 +314,19 @@ static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
{
AVPacketList *pkt1;
MyAVPacketList *pkt1;
if (q->abort_request)
return -1;
pkt1 = av_malloc(sizeof(AVPacketList));
pkt1 = av_malloc(sizeof(MyAVPacketList));
if (!pkt1)
return -1;
pkt1->pkt = *pkt;
pkt1->next = NULL;
if (pkt == &flush_pkt)
q->serial++;
pkt1->serial = q->serial;
if (!q->last_pkt)
q->first_pkt = pkt1;
@ -356,7 +369,7 @@ static void packet_queue_init(PacketQueue *q)
static void packet_queue_flush(PacketQueue *q)
{
AVPacketList *pkt, *pkt1;
MyAVPacketList *pkt, *pkt1;
SDL_LockMutex(q->mutex);
for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
@ -398,9 +411,9 @@ static void packet_queue_start(PacketQueue *q)
}
/* return < 0 if aborted, 0 if no packet and > 0 if packet. */
static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
{
AVPacketList *pkt1;
MyAVPacketList *pkt1;
int ret;
SDL_LockMutex(q->mutex);
@ -419,6 +432,8 @@ static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
q->nb_packets--;
q->size -= pkt1->pkt.size + sizeof(*pkt1);
*pkt = pkt1->pkt;
if (serial)
*serial = pkt1->serial;
av_free(pkt1);
ret = 1;
break;
@ -1044,9 +1059,27 @@ static double get_video_clock(VideoState *is)
/* get the current external clock value */
static double get_external_clock(VideoState *is)
{
int64_t ti;
ti = av_gettime();
return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
if (is->paused) {
return is->external_clock;
} else {
return is->external_clock_drift + av_gettime() / 1000000.0;
}
}
static int get_master_sync_type(VideoState *is) {
if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
if (is->video_st)
return AV_SYNC_VIDEO_MASTER;
else
return AV_SYNC_AUDIO_MASTER;
} else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
if (is->audio_st)
return AV_SYNC_AUDIO_MASTER;
else
return AV_SYNC_EXTERNAL_CLOCK;
} else {
return AV_SYNC_EXTERNAL_CLOCK;
}
}
/* get the current master clock value */
@ -1054,22 +1087,33 @@ static double get_master_clock(VideoState *is)
{
double val;
if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
if (is->video_st)
switch (get_master_sync_type(is)) {
case AV_SYNC_VIDEO_MASTER:
val = get_video_clock(is);
else
break;
case AV_SYNC_AUDIO_MASTER:
val = get_audio_clock(is);
} else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
if (is->audio_st)
val = get_audio_clock(is);
else
val = get_video_clock(is);
} else {
val = get_external_clock(is);
break;
default:
val = get_external_clock(is);
break;
}
return val;
}
static void update_external_clock_pts(VideoState *is, double pts)
{
is->external_clock_time = av_gettime();
is->external_clock = pts;
is->external_clock_drift = pts - is->external_clock_time / 1000000.0;
}
static void check_external_clock_sync(VideoState *is, double pts) {
if (fabs(get_external_clock(is) - pts) > AV_NOSYNC_THRESHOLD) {
update_external_clock_pts(is, pts);
}
}
/* seek in the stream */
static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
{
@ -1093,6 +1137,7 @@ static void stream_toggle_pause(VideoState *is)
}
is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
}
update_external_clock_pts(is, get_external_clock(is));
is->paused = !is->paused;
}
@ -1101,8 +1146,7 @@ static double compute_target_delay(double delay, VideoState *is)
double sync_threshold, diff;
/* update delay to follow master synchronisation source */
if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
/* if video is slave, we try to correct big delays by
duplicating or deleting a frame */
diff = get_video_clock(is) - get_master_clock(is);
@ -1152,13 +1196,15 @@ static void pictq_prev_picture(VideoState *is) {
}
}
static void update_video_pts(VideoState *is, double pts, int64_t pos) {
static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
double time = av_gettime() / 1000000.0;
/* update current video pts */
is->video_current_pts = pts;
is->video_current_pts_drift = is->video_current_pts - time;
is->video_current_pos = pos;
is->frame_last_pts = pts;
if (is->videoq.serial == serial)
check_external_clock_sync(is, is->video_current_pts);
}
/* called to display each frame */
@ -1177,7 +1223,7 @@ retry:
if (is->pictq_size == 0) {
SDL_LockMutex(is->pictq_mutex);
if (is->frame_last_dropped_pts != AV_NOPTS_VALUE && is->frame_last_dropped_pts > is->frame_last_pts) {
update_video_pts(is, is->frame_last_dropped_pts, is->frame_last_dropped_pos);
update_video_pts(is, is->frame_last_dropped_pts, is->frame_last_dropped_pos, 0);
is->frame_last_dropped_pts = AV_NOPTS_VALUE;
}
SDL_UnlockMutex(is->pictq_mutex);
@ -1211,13 +1257,13 @@ retry:
is->frame_timer += delay * FFMAX(1, floor((time-is->frame_timer) / delay));
SDL_LockMutex(is->pictq_mutex);
update_video_pts(is, vp->pts, vp->pos);
update_video_pts(is, vp->pts, vp->pos, vp->serial);
SDL_UnlockMutex(is->pictq_mutex);
if (is->pictq_size > 1) {
VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
duration = nextvp->pts - vp->pts;
if((framedrop>0 || (framedrop && is->audio_st)) && time > is->frame_timer + duration){
if((framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
is->frame_drops_late++;
pictq_next_picture(is);
goto retry;
@ -1356,7 +1402,7 @@ static void alloc_picture(VideoState *is)
SDL_UnlockMutex(is->pictq_mutex);
}
static int queue_picture(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
static int queue_picture(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos, int serial)
{
VideoPicture *vp;
double frame_delay, pts = pts1;
@ -1477,6 +1523,7 @@ static int queue_picture(VideoState *is, AVFrame *src_frame, double pts1, int64_
vp->pts = pts;
vp->pos = pos;
vp->skip = 0;
vp->serial = serial;
/* now we can update the picture count */
if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
@ -1488,11 +1535,11 @@ static int queue_picture(VideoState *is, AVFrame *src_frame, double pts1, int64_
return 0;
}
static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt, int *serial)
{
int got_picture, i;
if (packet_queue_get(&is->videoq, pkt, 1) < 0)
if (packet_queue_get(&is->videoq, pkt, 1, serial) < 0)
return -1;
if (pkt->data == flush_pkt.data) {
@ -1534,8 +1581,7 @@ static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacke
*pts = 0;
}
if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) || is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK) &&
(framedrop>0 || (framedrop && is->audio_st))) {
if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
SDL_LockMutex(is->pictq_mutex);
if (is->frame_last_pts != AV_NOPTS_VALUE && *pts) {
double clockdiff = get_video_clock(is) - get_master_clock(is);
@ -1664,6 +1710,7 @@ static int video_thread(void *arg)
int64_t pts_int = AV_NOPTS_VALUE, pos = -1;
double pts;
int ret;
int serial = 0;
#if CONFIG_AVFILTER
AVCodecContext *codec = is->video_st->codec;
@ -1692,7 +1739,7 @@ static int video_thread(void *arg)
avcodec_get_frame_defaults(frame);
av_free_packet(&pkt);
ret = get_video_frame(is, frame, &pts_int, &pkt);
ret = get_video_frame(is, frame, &pts_int, &pkt, &serial);
if (ret < 0)
goto the_end;
@ -1773,11 +1820,11 @@ static int video_thread(void *arg)
is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
}
pts = pts_int * av_q2d(is->video_st->time_base);
ret = queue_picture(is, frame, pts, pos);
ret = queue_picture(is, frame, pts, pos, serial);
}
#else
pts = pts_int * av_q2d(is->video_st->time_base);
ret = queue_picture(is, frame, pts, pkt.pos);
ret = queue_picture(is, frame, pts, pkt.pos, serial);
#endif
if (ret < 0)
@ -1810,7 +1857,7 @@ static int subtitle_thread(void *arg)
while (is->paused && !is->subtitleq.abort_request) {
SDL_Delay(10);
}
if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
if (packet_queue_get(&is->subtitleq, pkt, 1, NULL) < 0)
break;
if (pkt->data == flush_pkt.data) {
@ -1892,14 +1939,13 @@ static int synchronize_audio(VideoState *is, int nb_samples)
int wanted_nb_samples = nb_samples;
/* if not master, then we try to remove or add samples to correct the clock */
if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
double diff, avg_diff;
int min_nb_samples, max_nb_samples;
diff = get_audio_clock(is) - get_master_clock(is);
if (diff < AV_NOSYNC_THRESHOLD) {
if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
/* not enough measures to have a correct estimate */
@ -2061,7 +2107,7 @@ static int audio_decode_frame(VideoState *is, double *pts_ptr)
SDL_CondSignal(is->continue_read_thread);
/* read next packet */
if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
if ((new_packet = packet_queue_get(&is->audioq, pkt, 1, &is->audio_pkt_temp_serial)) < 0)
return -1;
if (pkt->data == flush_pkt.data) {
@ -2116,6 +2162,8 @@ static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
/* Let's assume the audio driver that is used by SDL has two periods. */
is->audio_current_pts = is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec;
is->audio_current_pts_drift = is->audio_current_pts - audio_callback_time / 1000000.0;
if (is->audioq.serial == is->audio_pkt_temp_serial)
check_external_clock_sync(is, is->audio_current_pts);
}
static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
@ -2548,6 +2596,7 @@ static int read_thread(void *arg)
packet_queue_put(&is->videoq, &flush_pkt);
}
}
update_external_clock_pts(is, (seek_target + ic->start_time) / (double)AV_TIME_BASE);
is->seek_req = 0;
eof = 0;
}
@ -2677,6 +2726,9 @@ static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
is->continue_read_thread = SDL_CreateCond();
update_external_clock_pts(is, 0.0);
is->audio_current_pts_drift = -av_gettime() / 1000000.0;
is->video_current_pts_drift = is->audio_current_pts_drift;
is->av_sync_type = av_sync_type;
is->read_tid = SDL_CreateThread(read_thread, is);
if (!is->read_tid) {