int abort_request;
int paused;
int last_paused;
+ int seek_req;
+ int64_t seek_pos;
AVFormatContext *ic;
int dtg_active_format;
AVPacket audio_pkt;
uint8_t *audio_pkt_data;
int audio_pkt_size;
- int64_t audio_pkt_ipts;
int show_audio; /* if true, display audio samples */
int16_t sample_array[SAMPLE_ARRAY_SIZE];
int video_stream;
AVStream *video_st;
PacketQueue videoq;
- int64_t ipts;
- int picture_start; /* true if picture starts */
double video_last_P_pts; /* pts of the last P picture (needed if B
frames are present) */
double video_current_pts; /* current displayed pts (different from
static int display_disable;
static int show_status;
static int av_sync_type = AV_SYNC_AUDIO_MASTER;
+static int64_t start_time = AV_NOPTS_VALUE;
+static int debug = 0;
+static int debug_mv = 0;
+static int step = 0;
/* current context */
static int is_full_screen;
q->cond = SDL_CreateCond();
}
-static void packet_queue_end(PacketQueue *q)
+static void packet_queue_flush(PacketQueue *q)
{
AVPacketList *pkt, *pkt1;
pkt1 = pkt->next;
av_free_packet(&pkt->pkt);
}
+ q->last_pkt = NULL;
+ q->first_pkt = NULL;
+ q->nb_packets = 0;
+ q->size = 0;
+}
+
+static void packet_queue_end(PacketQueue *q)
+{
+ packet_queue_flush(q);
SDL_DestroyMutex(q->mutex);
SDL_DestroyCond(q->cond);
}
{
AVPacketList *pkt1;
+ /* duplicate the packet */
+ if (av_dup_packet(pkt) < 0)
+ return -1;
+
pkt1 = av_malloc(sizeof(AVPacketList));
if (!pkt1)
return -1;
pkt1->pkt = *pkt;
pkt1->next = NULL;
+
SDL_LockMutex(q->mutex);
if (!q->last_pkt)
vp = &is->pictq[is->pictq_rindex];
if (vp->bmp) {
/* XXX: use variable in the frame */
- aspect_ratio = is->video_st->codec.aspect_ratio;
+ if (is->video_st->codec.sample_aspect_ratio.num == 0)
+ aspect_ratio = 0;
+ else
+ aspect_ratio = av_q2d(is->video_st->codec.sample_aspect_ratio)
+ * is->video_st->codec.width / is->video_st->codec.height;;
if (aspect_ratio <= 0.0)
aspect_ratio = (float)is->video_st->codec.width /
(float)is->video_st->codec.height;
static double get_video_clock(VideoState *is)
{
double delta;
- delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
+ if (is->paused) {
+ delta = 0;
+ } else {
+ delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
+ }
return is->video_current_pts + delta;
}
{
double val;
- if (is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st)
- val = get_video_clock(is);
- else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st)
- val = get_audio_clock(is);
- else
+ if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
+ if (is->video_st)
+ val = get_video_clock(is);
+ else
+ 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);
+ }
return val;
}
+/* seek in the stream */
+static void stream_seek(VideoState *is, int64_t pos)
+{
+ is->seek_pos = pos;
+ is->seek_req = 1;
+}
+
+/* pause or resume the video */
+static void stream_pause(VideoState *is)
+{
+ is->paused = !is->paused;
+ if (is->paused) {
+ is->video_current_pts = get_video_clock(is);
+ }
+}
+
/* called to display each frame */
static void video_refresh_timer(void *opaque)
{
pict.linesize[0] = vp->bmp->pitches[0];
pict.linesize[1] = vp->bmp->pitches[2];
pict.linesize[2] = vp->bmp->pitches[1];
-
img_convert(&pict, dst_pix_fmt,
(AVPicture *)src_frame, is->video_st->codec.pix_fmt,
is->video_st->codec.width, is->video_st->codec.height);
/* update video clock with pts, if present */
is->video_clock = pts;
} else {
- frame_delay = (double)is->video_st->codec.frame_rate_base /
- (double)is->video_st->codec.frame_rate;
- is->video_clock += frame_delay;
- /* for MPEG2, the frame can be repeated, so we update the
- clock accordingly */
- if (src_frame->repeat_pict) {
- is->video_clock += src_frame->repeat_pict * (frame_delay * 0.5);
- }
+ pts = is->video_clock;
}
+ /* update video clock for next frame */
+ frame_delay = (double)is->video_st->codec.frame_rate_base /
+ (double)is->video_st->codec.frame_rate;
+ /* for MPEG2, the frame can be repeated, so we update the
+ clock accordingly */
+ if (src_frame->repeat_pict) {
+ frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
+ }
+ is->video_clock += frame_delay;
#if defined(DEBUG_SYNC) && 0
{
else
ftype = 'P';
printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
- ftype, is->video_clock, pts1);
+ ftype, pts, pts1);
}
#endif
- return queue_picture(is, src_frame, is->video_clock);
+ return queue_picture(is, src_frame, pts);
}
static int video_thread(void *arg)
{
VideoState *is = arg;
AVPacket pkt1, *pkt = &pkt1;
- unsigned char *ptr;
- int len, len1, got_picture;
+ int len1, got_picture;
AVFrame *frame= avcodec_alloc_frame();
- int64_t ipts;
double pts;
for(;;) {
break;
/* NOTE: ipts is the PTS of the _first_ picture beginning in
this packet, if any */
- ipts = pkt->pts;
- ptr = pkt->data;
+ pts = 0;
+ if (pkt->pts != AV_NOPTS_VALUE)
+ pts = (double)pkt->pts / AV_TIME_BASE;
+
if (is->video_st->codec.codec_id == CODEC_ID_RAWVIDEO) {
- avpicture_fill((AVPicture *)frame, ptr,
+ avpicture_fill((AVPicture *)frame, pkt->data,
is->video_st->codec.pix_fmt,
is->video_st->codec.width,
is->video_st->codec.height);
- pts = 0;
- if (ipts != AV_NOPTS_VALUE)
- pts = (double)ipts * is->ic->pts_num / is->ic->pts_den;
frame->pict_type = FF_I_TYPE;
if (output_picture2(is, frame, pts) < 0)
goto the_end;
} else {
- len = pkt->size;
- while (len > 0) {
- if (is->picture_start) {
- is->ipts = ipts;
- is->picture_start = 0;
- ipts = AV_NOPTS_VALUE;
- }
- len1 = avcodec_decode_video(&is->video_st->codec,
- frame, &got_picture, ptr, len);
- if (len1 < 0)
- break;
- if (got_picture) {
- pts = 0;
- if (is->ipts != AV_NOPTS_VALUE)
- pts = (double)is->ipts * is->ic->pts_num / is->ic->pts_den;
- if (output_picture2(is, frame, pts) < 0)
- goto the_end;
- is->picture_start = 1;
- }
- ptr += len1;
- len -= len1;
+ len1 = avcodec_decode_video(&is->video_st->codec,
+ frame, &got_picture,
+ pkt->data, pkt->size);
+ if (len1 < 0)
+ break;
+ if (got_picture) {
+ if (output_picture2(is, frame, pts) < 0)
+ goto the_end;
}
}
av_free_packet(pkt);
+ if (step)
+ if (cur_stream)
+ stream_pause(cur_stream);
}
the_end:
av_free(frame);
static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, double *pts_ptr)
{
AVPacket *pkt = &is->audio_pkt;
- int len1, data_size;
+ int n, len1, data_size;
double pts;
for(;;) {
- if (is->paused || is->audioq.abort_request) {
- return -1;
- }
+ /* NOTE: the audio packet can contain several frames */
while (is->audio_pkt_size > 0) {
len1 = avcodec_decode_audio(&is->audio_st->codec,
(int16_t *)audio_buf, &data_size,
is->audio_pkt_data, is->audio_pkt_size);
- if (len1 < 0)
+ if (len1 < 0) {
+ /* if error, we skip the frame */
+ is->audio_pkt_size = 0;
break;
+ }
+
is->audio_pkt_data += len1;
is->audio_pkt_size -= len1;
- if (data_size > 0) {
- pts = 0;
- if (is->audio_pkt_ipts != AV_NOPTS_VALUE)
- pts = (double)is->audio_pkt_ipts * is->ic->pts_num / is->ic->pts_den;
- /* if no pts, then compute it */
- if (pts != 0) {
- is->audio_clock = pts;
- } else {
- int n;
- n = 2 * is->audio_st->codec.channels;
- is->audio_clock += (double)data_size / (double)(n * is->audio_st->codec.sample_rate);
- }
+ if (data_size <= 0)
+ continue;
+ /* if no pts, then compute it */
+ pts = is->audio_clock;
+ *pts_ptr = pts;
+ n = 2 * is->audio_st->codec.channels;
+ is->audio_clock += (double)data_size /
+ (double)(n * is->audio_st->codec.sample_rate);
#if defined(DEBUG_SYNC)
- {
- static double last_clock;
- printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
- is->audio_clock - last_clock,
- is->audio_clock, pts);
- last_clock = is->audio_clock;
- }
-#endif
- *pts_ptr = is->audio_clock;
- is->audio_pkt_ipts = AV_NOPTS_VALUE;
- /* we got samples : we can exit now */
- return data_size;
+ {
+ static double last_clock;
+ printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
+ is->audio_clock - last_clock,
+ is->audio_clock, pts);
+ last_clock = is->audio_clock;
}
+#endif
+ return data_size;
}
- /* free previous packet if any */
- if (pkt->destruct)
+ /* free the current packet */
+ if (pkt->data)
av_free_packet(pkt);
-
+
+ if (is->paused || is->audioq.abort_request) {
+ return -1;
+ }
+
/* read next packet */
if (packet_queue_get(&is->audioq, pkt, 1) < 0)
return -1;
is->audio_pkt_data = pkt->data;
is->audio_pkt_size = pkt->size;
- is->audio_pkt_ipts = pkt->pts;
+
+ /* if update the audio clock with the pts */
+ if (pkt->pts != AV_NOPTS_VALUE) {
+ is->audio_clock = (double)pkt->pts / AV_TIME_BASE;
+ }
}
}
is->audio_st = ic->streams[stream_index];
is->audio_buf_size = 0;
is->audio_buf_index = 0;
- is->audio_pkt_size = 0;
/* init averaging filter */
is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
is->frame_last_delay = 40e-3;
is->frame_timer = (double)av_gettime() / 1000000.0;
- is->picture_start = 1;
is->video_current_pts_time = av_gettime();
packet_queue_init(&is->videoq);
is->video_tid = SDL_CreateThread(video_thread, is);
+ enc->debug = debug;
+ enc->debug_mv = debug_mv;
break;
default:
break;
{
VideoState *is = arg;
AVFormatContext *ic;
- int err, i, ret, video_index, audio_index;
+ int err, i, ret, video_index, audio_index, use_play;
AVPacket pkt1, *pkt = &pkt1;
AVFormatParameters params, *ap = ¶ms;
memset(ap, 0, sizeof(*ap));
ap->image_format = image_format;
-
+ ap->initial_pause = 1; /* we force a pause when starting an RTSP
+ stream */
+
err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
if (err < 0) {
print_error(is->filename, err);
goto fail;
}
is->ic = ic;
- err = av_find_stream_info(ic);
- if (err < 0) {
- fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
- ret = -1;
- goto fail;
+#ifdef CONFIG_NETWORK
+ use_play = (ic->iformat == &rtsp_demux);
+#else
+ use_play = 0;
+#endif
+ if (!use_play) {
+ err = av_find_stream_info(ic);
+ if (err < 0) {
+ fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
+ ret = -1;
+ goto fail;
+ }
}
-
+
+ /* if seeking requested, we execute it */
+ if (start_time != AV_NOPTS_VALUE) {
+ int64_t timestamp;
+
+ timestamp = start_time;
+ /* add the stream start time */
+ if (ic->start_time != AV_NOPTS_VALUE)
+ timestamp += ic->start_time;
+ ret = av_seek_frame(ic, -1, timestamp);
+ if (ret < 0) {
+ fprintf(stderr, "%s: could not seek to position %0.3f\n",
+ is->filename, (double)timestamp / AV_TIME_BASE);
+ }
+ }
+
+ /* now we can begin to play (RTSP stream only) */
+ av_read_play(ic);
+
+ if (use_play) {
+ err = av_find_stream_info(ic);
+ if (err < 0) {
+ fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
+ ret = -1;
+ goto fail;
+ }
+ }
+
for(i = 0; i < ic->nb_streams; i++) {
AVCodecContext *enc = &ic->streams[i]->codec;
switch(enc->codec_type) {
#ifdef CONFIG_NETWORK
if (is->paused != is->last_paused) {
is->last_paused = is->paused;
- if (ic->iformat == &rtsp_demux) {
- if (is->paused)
- rtsp_pause(ic);
- else
- rtsp_resume(ic);
- }
+ if (is->paused)
+ av_read_pause(ic);
+ else
+ av_read_play(ic);
}
if (is->paused && ic->iformat == &rtsp_demux) {
/* wait 10 ms to avoid trying to get another packet */
continue;
}
#endif
+ if (is->seek_req) {
+ /* XXX: must lock decoder threads */
+ if (is->audio_stream >= 0) {
+ packet_queue_flush(&is->audioq);
+ }
+ if (is->video_stream >= 0) {
+ packet_queue_flush(&is->videoq);
+ }
+ ret = av_seek_frame(is->ic, -1, is->seek_pos);
+ if (ret < 0) {
+ fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
+ }
+ is->seek_req = 0;
+ }
/* if the queue are full, no need to read more */
if (is->audioq.size > MAX_AUDIOQ_SIZE ||
SDL_Delay(10);
continue;
}
- ret = av_read_packet(ic, pkt);
+ ret = av_read_frame(ic, pkt);
if (ret < 0) {
break;
}
return 0;
}
-/* pause or resume the video */
-static void stream_pause(VideoState *is)
-{
- is->paused = !is->paused;
-}
-
static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
{
VideoState *is;
{
if (cur_stream)
stream_pause(cur_stream);
+ step = 0;
+}
+
+void step_to_next_frame(void)
+{
+ if (cur_stream) {
+ if (cur_stream->paused)
+ cur_stream->paused=0;
+ cur_stream->video_current_pts = get_video_clock(cur_stream);
+ }
+ step = 1;
}
void do_exit(void)
void event_loop(void)
{
SDL_Event event;
+ double incr, pos, frac;
for(;;) {
SDL_WaitEvent(&event);
case SDLK_SPACE:
toggle_pause();
break;
+ case SDLK_s: //S: Step to next frame
+ step_to_next_frame();
+ break;
case SDLK_a:
if (cur_stream)
stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
case SDLK_w:
toggle_audio_display();
break;
+ case SDLK_LEFT:
+ incr = -10.0;
+ goto do_seek;
+ case SDLK_RIGHT:
+ incr = 10.0;
+ goto do_seek;
+ case SDLK_UP:
+ incr = 60.0;
+ goto do_seek;
+ case SDLK_DOWN:
+ incr = -60.0;
+ do_seek:
+ if (cur_stream) {
+ pos = get_master_clock(cur_stream);
+ pos += incr;
+ stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE));
+ }
+ break;
default:
break;
}
break;
+ case SDL_MOUSEBUTTONDOWN:
+ if (cur_stream) {
+ int ns, hh, mm, ss;
+ int tns, thh, tmm, tss;
+ tns = cur_stream->ic->duration/1000000LL;
+ thh = tns/3600;
+ tmm = (tns%3600)/60;
+ tss = (tns%60);
+ frac = (double)event.button.x/(double)cur_stream->width;
+ ns = frac*tns;
+ hh = ns/3600;
+ mm = (ns%3600)/60;
+ ss = (ns%60);
+ fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
+ hh, mm, ss, thh, tmm, tss);
+ stream_seek(cur_stream, (int64_t)(cur_stream->ic->start_time+frac*cur_stream->ic->duration));
+ }
+ break;
case SDL_VIDEORESIZE:
if (cur_stream) {
screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
show_help();
}
+void opt_seek(const char *arg)
+{
+ start_time = parse_date(arg, 1);
+}
+
+static void opt_debug(const char *arg)
+{
+ debug = atoi(arg);
+}
+
+static void opt_vismv(const char *arg)
+{
+ debug_mv = atoi(arg);
+}
+
const OptionDef options[] = {
- { "h", 0, {(void*)show_help}, "show help" },
+ { "h", 0, {(void*)show_help}, "show help" },
{ "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
{ "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
#if 0
#endif
{ "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
{ "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
+ { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
{ "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
{ "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
{ "img", HAS_ARG, {(void*)opt_image_format}, "force image format", "img_fmt" },
{ "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
+ { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
+ { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
#ifdef CONFIG_NETWORK
{ "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
#endif
"a cycle audio channel\n"
"v cycle video channel\n"
"w show audio waves\n"
+ "left/right seek backward/forward 10 seconds\n"
+ "down/up seek backward/forward 1 minute\n"
+ "mouse click seek to percentage in file corresponding to fraction of width\n"
);
exit(1);
}
projects / ffmpeg / blobdiff