mirror of https://git.ffmpeg.org/ffmpeg.git
Merge remote-tracking branch 'cus/stable'
* cus/stable: ffplay: detect when the created overlay buffers are not valid for the wanted overlay height ffplay: do not allow wider window than 16383 ffplay: use 0 frame delay if redisplaying an already displayed frame ffplay: use more sane frame timer resetting logic ffplay: only update pts if not redisplaying a frame ffplay: fix compute_target_delay to better handle frames with long durations ffplay: if playing only audio or video only, show the master clock diff in status line ffplay: factorize clock functions ffplay: decrease video picture queue size to 3 Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer
commit
c28aafe6c0
223
ffplay.c
223
ffplay.c
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@ -69,8 +69,12 @@ const int program_birth_year = 2003;
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A/V sync as SDL does not have hardware buffer fullness info. */
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#define SDL_AUDIO_BUFFER_SIZE 1024
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/* no AV sync correction is done if below the AV sync threshold */
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#define AV_SYNC_THRESHOLD 0.01
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/* no AV sync correction is done if below the minimum AV sync threshold */
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#define AV_SYNC_THRESHOLD_MIN 0.01
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/* AV sync correction is done if above the maximum AV sync threshold */
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#define AV_SYNC_THRESHOLD_MAX 0.1
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/* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
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#define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
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/* no AV correction is done if too big error */
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#define AV_NOSYNC_THRESHOLD 10.0
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@ -112,7 +116,7 @@ typedef struct PacketQueue {
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SDL_cond *cond;
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} PacketQueue;
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#define VIDEO_PICTURE_QUEUE_SIZE 4
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#define VIDEO_PICTURE_QUEUE_SIZE 3
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#define SUBPICTURE_QUEUE_SIZE 4
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typedef struct VideoPicture {
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@ -139,6 +143,16 @@ typedef struct AudioParams {
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enum AVSampleFormat fmt;
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} AudioParams;
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typedef struct Clock {
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double pts; /* clock base */
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double pts_drift; /* clock base minus time at which we updated the clock */
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double last_updated;
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double speed;
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int serial; /* clock is based on a packet with this serial */
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int paused;
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int *queue_serial; /* pointer to the current packet queue serial, used for obsolete clock detection */
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} Clock;
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enum {
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AV_SYNC_AUDIO_MASTER, /* default choice */
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AV_SYNC_VIDEO_MASTER,
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@ -163,13 +177,13 @@ typedef struct VideoState {
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AVFormatContext *ic;
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int realtime;
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Clock audclk;
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Clock vidclk;
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Clock extclk;
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int audio_stream;
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int av_sync_type;
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double external_clock; ///< external clock base
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double external_clock_drift; ///< external clock base - time (av_gettime) at which we updated external_clock
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int64_t external_clock_time; ///< last reference time
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double external_clock_speed; ///< speed of the external clock
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double audio_clock;
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int audio_clock_serial;
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@ -241,7 +255,6 @@ typedef struct VideoState {
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double video_current_pts_drift; // video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
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int64_t video_current_pos; // current displayed file pos
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double max_frame_duration; // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
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int video_clock_serial;
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VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
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int pictq_size, pictq_rindex, pictq_windex;
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SDL_mutex *pictq_mutex;
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@ -1067,6 +1080,7 @@ static int video_open(VideoState *is, int force_set_video_mode, VideoPicture *vp
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w = default_width;
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h = default_height;
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}
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w = FFMIN(16383, w);
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if (screen && is->width == screen->w && screen->w == w
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&& is->height== screen->h && screen->h == h && !force_set_video_mode)
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return 0;
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@ -1096,41 +1110,54 @@ static void video_display(VideoState *is)
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video_image_display(is);
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}
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/* get the current audio clock value */
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static double get_audio_clock(VideoState *is)
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static double get_clock(Clock *c)
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{
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if (is->audio_clock_serial != is->audioq.serial)
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if (*c->queue_serial != c->serial)
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return NAN;
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if (is->paused) {
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return is->audio_current_pts;
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} else {
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return is->audio_current_pts_drift + av_gettime() / 1000000.0;
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}
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}
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/* get the current video clock value */
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static double get_video_clock(VideoState *is)
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{
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if (is->video_clock_serial != is->videoq.serial)
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return NAN;
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if (is->paused) {
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return is->video_current_pts;
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} else {
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return is->video_current_pts_drift + av_gettime() / 1000000.0;
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}
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}
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/* get the current external clock value */
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static double get_external_clock(VideoState *is)
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{
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if (is->paused) {
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return is->external_clock;
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if (c->paused) {
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return c->pts;
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} else {
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double time = av_gettime() / 1000000.0;
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return is->external_clock_drift + time - (time - is->external_clock_time / 1000000.0) * (1.0 - is->external_clock_speed);
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return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
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}
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}
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static void set_clock_at(Clock *c, double pts, int serial, double time)
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{
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c->pts = pts;
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c->last_updated = time;
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c->pts_drift = c->pts - time;
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c->serial = serial;
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}
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static void set_clock(Clock *c, double pts, int serial)
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{
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double time = av_gettime() / 1000000.0;
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set_clock_at(c, pts, serial, time);
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}
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static void set_clock_speed(Clock *c, double speed)
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{
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set_clock(c, get_clock(c), c->serial);
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c->speed = speed;
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}
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static void init_clock(Clock *c, int *queue_serial)
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{
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c->speed = 1.0;
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c->paused = 0;
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c->queue_serial = queue_serial;
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set_clock(c, NAN, -1);
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}
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static void sync_clock_to_slave(Clock *c, Clock *slave)
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{
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double clock = get_clock(c);
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double slave_clock = get_clock(slave);
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if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
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set_clock(c, slave_clock, slave->serial);
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}
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static int get_master_sync_type(VideoState *is) {
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if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
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if (is->video_st)
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@ -1154,48 +1181,29 @@ static double get_master_clock(VideoState *is)
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switch (get_master_sync_type(is)) {
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case AV_SYNC_VIDEO_MASTER:
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val = get_video_clock(is);
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val = get_clock(&is->vidclk);
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break;
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case AV_SYNC_AUDIO_MASTER:
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val = get_audio_clock(is);
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val = get_clock(&is->audclk);
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break;
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default:
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val = get_external_clock(is);
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val = get_clock(&is->extclk);
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break;
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}
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return val;
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}
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static void update_external_clock_pts(VideoState *is, double pts)
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{
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is->external_clock_time = av_gettime();
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is->external_clock = pts;
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is->external_clock_drift = pts - is->external_clock_time / 1000000.0;
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}
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static void check_external_clock_sync(VideoState *is, double pts) {
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double ext_clock = get_external_clock(is);
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if (isnan(ext_clock) || fabs(ext_clock - pts) > AV_NOSYNC_THRESHOLD) {
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update_external_clock_pts(is, pts);
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}
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}
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static void update_external_clock_speed(VideoState *is, double speed) {
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update_external_clock_pts(is, get_external_clock(is));
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is->external_clock_speed = speed;
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}
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static void check_external_clock_speed(VideoState *is) {
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if (is->video_stream >= 0 && is->videoq.nb_packets <= MIN_FRAMES / 2 ||
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is->audio_stream >= 0 && is->audioq.nb_packets <= MIN_FRAMES / 2) {
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update_external_clock_speed(is, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->external_clock_speed - EXTERNAL_CLOCK_SPEED_STEP));
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set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
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} else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
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(is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
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update_external_clock_speed(is, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->external_clock_speed + EXTERNAL_CLOCK_SPEED_STEP));
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set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
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} else {
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double speed = is->external_clock_speed;
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double speed = is->extclk.speed;
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if (speed != 1.0)
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update_external_clock_speed(is, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
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set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
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}
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}
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@ -1217,14 +1225,14 @@ static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_by
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static void stream_toggle_pause(VideoState *is)
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{
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if (is->paused) {
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is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
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is->frame_timer += av_gettime() / 1000000.0 + is->vidclk.pts_drift - is->vidclk.pts;
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if (is->read_pause_return != AVERROR(ENOSYS)) {
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is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
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is->vidclk.paused = 0;
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}
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is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
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set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
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}
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update_external_clock_pts(is, get_external_clock(is));
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is->paused = !is->paused;
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set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
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is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
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}
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static void toggle_pause(VideoState *is)
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@ -1249,15 +1257,17 @@ static double compute_target_delay(double delay, VideoState *is)
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if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
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/* if video is slave, we try to correct big delays by
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duplicating or deleting a frame */
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diff = get_video_clock(is) - get_master_clock(is);
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diff = get_clock(&is->vidclk) - get_master_clock(is);
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/* skip or repeat frame. We take into account the
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delay to compute the threshold. I still don't know
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if it is the best guess */
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sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
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if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
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sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
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if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
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if (diff <= -sync_threshold)
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delay = 0;
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delay = FFMAX(0, delay + diff);
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else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
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delay = delay + diff;
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else if (diff >= sync_threshold)
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delay = 2 * delay;
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}
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@ -1287,7 +1297,7 @@ static int pictq_prev_picture(VideoState *is) {
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prevvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
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if (prevvp->allocated && prevvp->serial == is->videoq.serial) {
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SDL_LockMutex(is->pictq_mutex);
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if (is->pictq_size < VIDEO_PICTURE_QUEUE_SIZE - 1) {
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if (is->pictq_size < VIDEO_PICTURE_QUEUE_SIZE) {
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if (--is->pictq_rindex == -1)
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is->pictq_rindex = VIDEO_PICTURE_QUEUE_SIZE - 1;
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is->pictq_size++;
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@ -1300,15 +1310,11 @@ static int pictq_prev_picture(VideoState *is) {
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}
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static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
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double time = av_gettime() / 1000000.0;
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/* update current video pts */
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is->video_current_pts = pts;
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is->video_current_pts_drift = is->video_current_pts - time;
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set_clock(&is->vidclk, pts, serial);
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sync_clock_to_slave(&is->extclk, &is->vidclk);
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is->video_current_pos = pos;
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is->frame_last_pts = pts;
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is->video_clock_serial = serial;
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if (is->videoq.serial == serial)
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check_external_clock_sync(is, is->video_current_pts);
|
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}
|
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/* called to display each frame */
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@ -1365,19 +1371,23 @@ retry:
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/* if duration of the last frame was sane, update last_duration in video state */
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is->frame_last_duration = last_duration;
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}
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delay = compute_target_delay(is->frame_last_duration, is);
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if (redisplay)
|
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delay = 0.0;
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else
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delay = compute_target_delay(is->frame_last_duration, is);
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time= av_gettime()/1000000.0;
|
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if (time < is->frame_timer + delay) {
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if (time < is->frame_timer + delay && !redisplay) {
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*remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
|
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return;
|
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}
|
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|
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if (delay > 0)
|
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is->frame_timer += delay * FFMAX(1, floor((time-is->frame_timer) / delay));
|
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is->frame_timer += delay;
|
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if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
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is->frame_timer = time;
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SDL_LockMutex(is->pictq_mutex);
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if (!isnan(vp->pts))
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if (!redisplay && !isnan(vp->pts))
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update_video_pts(is, vp->pts, vp->pos, vp->serial);
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SDL_UnlockMutex(is->pictq_mutex);
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@ -1468,9 +1478,14 @@ display:
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sqsize = is->subtitleq.size;
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av_diff = 0;
|
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if (is->audio_st && is->video_st)
|
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av_diff = get_audio_clock(is) - get_video_clock(is);
|
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printf("%7.2f A-V:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64" \r",
|
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av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
|
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else if (is->video_st)
|
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av_diff = get_master_clock(is) - get_clock(&is->vidclk);
|
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else if (is->audio_st)
|
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av_diff = get_master_clock(is) - get_clock(&is->audclk);
|
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printf("%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64" \r",
|
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get_master_clock(is),
|
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(is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : " ")),
|
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av_diff,
|
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is->frame_drops_early + is->frame_drops_late,
|
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aqsize / 1024,
|
||||
|
|
@ -1489,6 +1504,7 @@ display:
|
|||
static void alloc_picture(VideoState *is)
|
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{
|
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VideoPicture *vp;
|
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int64_t bufferdiff;
|
||||
|
||||
vp = &is->pictq[is->pictq_windex];
|
||||
|
||||
|
|
@ -1500,7 +1516,8 @@ static void alloc_picture(VideoState *is)
|
|||
vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
|
||||
SDL_YV12_OVERLAY,
|
||||
screen);
|
||||
if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
|
||||
bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
|
||||
if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < vp->height * vp->bmp->pitches[0]) {
|
||||
/* SDL allocates a buffer smaller than requested if the video
|
||||
* overlay hardware is unable to support the requested size. */
|
||||
fprintf(stderr, "Error: the video system does not support an image\n"
|
||||
|
|
@ -1546,7 +1563,7 @@ static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t
|
|||
SDL_LockMutex(is->pictq_mutex);
|
||||
|
||||
/* keep the last already displayed picture in the queue */
|
||||
while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE - 2 &&
|
||||
while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE - 1 &&
|
||||
!is->videoq.abort_request) {
|
||||
SDL_CondWait(is->pictq_cond, is->pictq_mutex);
|
||||
}
|
||||
|
|
@ -1690,7 +1707,7 @@ static int get_video_frame(VideoState *is, AVFrame *frame, AVPacket *pkt, int *s
|
|||
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 && frame->pts != AV_NOPTS_VALUE) {
|
||||
double clockdiff = get_video_clock(is) - get_master_clock(is);
|
||||
double clockdiff = get_clock(&is->vidclk) - get_master_clock(is);
|
||||
double ptsdiff = dpts - is->frame_last_pts;
|
||||
if (!isnan(clockdiff) && fabs(clockdiff) < AV_NOSYNC_THRESHOLD &&
|
||||
!isnan(ptsdiff) && ptsdiff > 0 && ptsdiff < AV_NOSYNC_THRESHOLD &&
|
||||
|
|
@ -2079,7 +2096,7 @@ static int synchronize_audio(VideoState *is, int nb_samples)
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|||
double diff, avg_diff;
|
||||
int min_nb_samples, max_nb_samples;
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||||
|
||||
diff = get_audio_clock(is) - get_master_clock(is);
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||||
diff = get_clock(&is->audclk) - get_master_clock(is);
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||||
|
||||
if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
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||||
is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
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||||
|
|
@ -2371,10 +2388,8 @@ static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
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|||
bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
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||||
is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
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||||
/* Let's assume the audio driver that is used by SDL has two periods. */
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||||
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_clock_serial)
|
||||
check_external_clock_sync(is, is->audio_current_pts);
|
||||
set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
|
||||
sync_clock_to_slave(&is->extclk, &is->audclk);
|
||||
}
|
||||
|
||||
static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
|
||||
|
|
@ -2844,9 +2859,9 @@ static int read_thread(void *arg)
|
|||
packet_queue_put(&is->videoq, &flush_pkt);
|
||||
}
|
||||
if (is->seek_flags & AVSEEK_FLAG_BYTE) {
|
||||
update_external_clock_pts(is, NAN);
|
||||
set_clock(&is->extclk, NAN, 0);
|
||||
} else {
|
||||
update_external_clock_pts(is, seek_target / (double)AV_TIME_BASE);
|
||||
set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
|
||||
}
|
||||
}
|
||||
is->seek_req = 0;
|
||||
|
|
@ -2988,12 +3003,10 @@ static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
|
|||
|
||||
is->continue_read_thread = SDL_CreateCond();
|
||||
|
||||
update_external_clock_pts(is, NAN);
|
||||
update_external_clock_speed(is, 1.0);
|
||||
is->audio_current_pts_drift = -av_gettime() / 1000000.0;
|
||||
is->video_current_pts_drift = is->audio_current_pts_drift;
|
||||
init_clock(&is->vidclk, &is->videoq.serial);
|
||||
init_clock(&is->audclk, &is->audioq.serial);
|
||||
init_clock(&is->extclk, &is->extclk.serial);
|
||||
is->audio_clock_serial = -1;
|
||||
is->video_clock_serial = -1;
|
||||
is->audio_last_serial = -1;
|
||||
is->av_sync_type = av_sync_type;
|
||||
is->read_tid = SDL_CreateThread(read_thread, is);
|
||||
|
|
@ -3239,10 +3252,14 @@ static void event_loop(VideoState *cur_stream)
|
|||
}
|
||||
break;
|
||||
case SDL_VIDEORESIZE:
|
||||
screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
|
||||
screen = SDL_SetVideoMode(FFMIN(16383, event.resize.w), event.resize.h, 0,
|
||||
SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
|
||||
screen_width = cur_stream->width = event.resize.w;
|
||||
screen_height = cur_stream->height = event.resize.h;
|
||||
if (!screen) {
|
||||
fprintf(stderr, "Failed to set video mode\n");
|
||||
do_exit(cur_stream);
|
||||
}
|
||||
screen_width = cur_stream->width = screen->w;
|
||||
screen_height = cur_stream->height = screen->h;
|
||||
cur_stream->force_refresh = 1;
|
||||
break;
|
||||
case SDL_QUIT:
|
||||
|
|
|
|||
Loading…
Reference in New Issue