2 * FFplay : Simple Media Player based on the ffmpeg libraries
3 * Copyright (c) 2003 Fabrice Bellard
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 #define HAVE_AV_CONFIG_H
25 #include <SDL_thread.h>
28 #undef main /* We don't want SDL to override our main() */
31 #if defined(__linux__)
41 #define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
42 #define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
44 /* SDL audio buffer size, in samples. Should be small to have precise
45 A/V sync as SDL does not have hardware buffer fullness info. */
46 #define SDL_AUDIO_BUFFER_SIZE 1024
48 /* no AV sync correction is done if below the AV sync threshold */
49 #define AV_SYNC_THRESHOLD 0.08
50 /* no AV correction is done if too big error */
51 #define AV_NOSYNC_THRESHOLD 10.0
53 /* maximum audio speed change to get correct sync */
54 #define SAMPLE_CORRECTION_PERCENT_MAX 10
56 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
57 #define AUDIO_DIFF_AVG_NB 20
59 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
60 #define SAMPLE_ARRAY_SIZE (2*65536)
62 typedef struct PacketQueue {
63 AVPacketList *first_pkt, *last_pkt;
71 #define VIDEO_PICTURE_QUEUE_SIZE 1
73 typedef struct VideoPicture {
74 double pts; /* presentation time stamp for this picture */
76 int width, height; /* source height & width */
81 AV_SYNC_AUDIO_MASTER, /* default choice */
83 AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
86 typedef struct VideoState {
87 SDL_Thread *parse_tid;
88 SDL_Thread *video_tid;
89 AVInputFormat *iformat;
97 int dtg_active_format;
102 double external_clock; /* external clock base */
103 int64_t external_clock_time;
106 double audio_diff_cum; /* used for AV difference average computation */
107 double audio_diff_avg_coef;
108 double audio_diff_threshold;
109 int audio_diff_avg_count;
112 int audio_hw_buf_size;
113 /* samples output by the codec. we reserve more space for avsync
115 uint8_t audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
116 int audio_buf_size; /* in bytes */
117 int audio_buf_index; /* in bytes */
119 uint8_t *audio_pkt_data;
122 int show_audio; /* if true, display audio samples */
123 int16_t sample_array[SAMPLE_ARRAY_SIZE];
124 int sample_array_index;
128 double frame_last_pts;
129 double frame_last_delay;
134 double video_last_P_pts; /* pts of the last P picture (needed if B
135 frames are present) */
136 double video_current_pts; /* current displayed pts (different from
137 video_clock if frame fifos are used) */
138 int64_t video_current_pts_time; /* time at which we updated
139 video_current_pts - used to
140 have running video pts */
141 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
142 int pictq_size, pictq_rindex, pictq_windex;
143 SDL_mutex *pictq_mutex;
144 SDL_cond *pictq_cond;
146 // QETimer *video_timer;
148 int width, height, xleft, ytop;
151 void show_help(void);
152 static int audio_write_get_buf_size(VideoState *is);
154 /* options specified by the user */
155 static AVInputFormat *file_iformat;
156 static AVImageFormat *image_format;
157 static const char *input_filename;
158 static int fs_screen_width;
159 static int fs_screen_height;
160 static int screen_width = 640;
161 static int screen_height = 480;
162 static int audio_disable;
163 static int video_disable;
164 static int display_disable;
165 static int show_status;
166 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
167 static int64_t start_time = AV_NOPTS_VALUE;
168 static int debug = 0;
170 /* current context */
171 static int is_full_screen;
172 static VideoState *cur_stream;
173 static int64_t audio_callback_time;
175 #define FF_ALLOC_EVENT (SDL_USEREVENT)
176 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
177 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
181 /* packet queue handling */
182 static void packet_queue_init(PacketQueue *q)
184 memset(q, 0, sizeof(PacketQueue));
185 q->mutex = SDL_CreateMutex();
186 q->cond = SDL_CreateCond();
189 static void packet_queue_flush(PacketQueue *q)
191 AVPacketList *pkt, *pkt1;
193 for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
195 av_free_packet(&pkt->pkt);
203 static void packet_queue_end(PacketQueue *q)
205 packet_queue_flush(q);
206 SDL_DestroyMutex(q->mutex);
207 SDL_DestroyCond(q->cond);
210 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
214 /* duplicate the packet */
215 if (av_dup_packet(pkt) < 0)
218 pkt1 = av_malloc(sizeof(AVPacketList));
225 SDL_LockMutex(q->mutex);
231 q->last_pkt->next = pkt1;
234 q->size += pkt1->pkt.size;
235 /* XXX: should duplicate packet data in DV case */
236 SDL_CondSignal(q->cond);
238 SDL_UnlockMutex(q->mutex);
242 static void packet_queue_abort(PacketQueue *q)
244 SDL_LockMutex(q->mutex);
246 q->abort_request = 1;
248 SDL_CondSignal(q->cond);
250 SDL_UnlockMutex(q->mutex);
253 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
254 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
259 SDL_LockMutex(q->mutex);
262 if (q->abort_request) {
269 q->first_pkt = pkt1->next;
273 q->size -= pkt1->pkt.size;
282 SDL_CondWait(q->cond, q->mutex);
285 SDL_UnlockMutex(q->mutex);
289 static inline void fill_rectangle(SDL_Surface *screen,
290 int x, int y, int w, int h, int color)
297 SDL_FillRect(screen, &rect, color);
301 /* draw only the border of a rectangle */
302 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
306 /* fill the background */
310 w2 = s->width - (x + w);
316 h2 = s->height - (y + h);
319 fill_rectangle(screen,
323 fill_rectangle(screen,
324 s->xleft + s->width - w2, s->ytop,
327 fill_rectangle(screen,
328 s->xleft + w1, s->ytop,
329 s->width - w1 - w2, h1,
331 fill_rectangle(screen,
332 s->xleft + w1, s->ytop + s->height - h2,
333 s->width - w1 - w2, h2,
338 static void video_image_display(VideoState *is)
342 int width, height, x, y;
345 vp = &is->pictq[is->pictq_rindex];
347 /* XXX: use variable in the frame */
348 if (is->video_st->codec.sample_aspect_ratio.num == 0)
351 aspect_ratio = av_q2d(is->video_st->codec.sample_aspect_ratio)
352 * is->video_st->codec.width / is->video_st->codec.height;;
353 if (aspect_ratio <= 0.0)
354 aspect_ratio = (float)is->video_st->codec.width /
355 (float)is->video_st->codec.height;
356 /* if an active format is indicated, then it overrides the
359 if (is->video_st->codec.dtg_active_format != is->dtg_active_format) {
360 is->dtg_active_format = is->video_st->codec.dtg_active_format;
361 printf("dtg_active_format=%d\n", is->dtg_active_format);
365 switch(is->video_st->codec.dtg_active_format) {
366 case FF_DTG_AFD_SAME:
371 aspect_ratio = 4.0 / 3.0;
373 case FF_DTG_AFD_16_9:
374 aspect_ratio = 16.0 / 9.0;
376 case FF_DTG_AFD_14_9:
377 aspect_ratio = 14.0 / 9.0;
379 case FF_DTG_AFD_4_3_SP_14_9:
380 aspect_ratio = 14.0 / 9.0;
382 case FF_DTG_AFD_16_9_SP_14_9:
383 aspect_ratio = 14.0 / 9.0;
385 case FF_DTG_AFD_SP_4_3:
386 aspect_ratio = 4.0 / 3.0;
391 /* XXX: we suppose the screen has a 1.0 pixel ratio */
393 width = ((int)rint(height * aspect_ratio)) & -3;
394 if (width > is->width) {
396 height = ((int)rint(width / aspect_ratio)) & -3;
398 x = (is->width - width) / 2;
399 y = (is->height - height) / 2;
400 if (!is->no_background) {
401 /* fill the background */
402 // fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
404 is->no_background = 0;
406 rect.x = is->xleft + x;
407 rect.y = is->xleft + y;
410 SDL_DisplayYUVOverlay(vp->bmp, &rect);
413 fill_rectangle(screen,
414 is->xleft, is->ytop, is->width, is->height,
415 QERGB(0x00, 0x00, 0x00));
420 static inline int compute_mod(int a, int b)
429 static void video_audio_display(VideoState *s)
431 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
432 int ch, channels, h, h2, bgcolor, fgcolor;
435 /* compute display index : center on currently output samples */
436 channels = s->audio_st->codec.channels;
437 nb_display_channels = channels;
440 delay = audio_write_get_buf_size(s);
443 /* to be more precise, we take into account the time spent since
444 the last buffer computation */
445 if (audio_callback_time) {
446 time_diff = av_gettime() - audio_callback_time;
447 delay += (time_diff * s->audio_st->codec.sample_rate) / 1000000;
450 delay -= s->width / 2;
451 if (delay < s->width)
453 i_start = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
454 s->last_i_start = i_start;
456 i_start = s->last_i_start;
459 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
460 fill_rectangle(screen,
461 s->xleft, s->ytop, s->width, s->height,
464 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
466 /* total height for one channel */
467 h = s->height / nb_display_channels;
468 /* graph height / 2 */
470 for(ch = 0;ch < nb_display_channels; ch++) {
472 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
473 for(x = 0; x < s->width; x++) {
474 y = (s->sample_array[i] * h2) >> 15;
481 fill_rectangle(screen,
482 s->xleft + x, ys, 1, y,
485 if (i >= SAMPLE_ARRAY_SIZE)
486 i -= SAMPLE_ARRAY_SIZE;
490 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
492 for(ch = 1;ch < nb_display_channels; ch++) {
493 y = s->ytop + ch * h;
494 fill_rectangle(screen,
495 s->xleft, y, s->width, 1,
498 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
501 /* display the current picture, if any */
502 static void video_display(VideoState *is)
504 if (is->audio_st && is->show_audio)
505 video_audio_display(is);
506 else if (is->video_st)
507 video_image_display(is);
510 static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
513 event.type = FF_REFRESH_EVENT;
514 event.user.data1 = opaque;
515 SDL_PushEvent(&event);
516 return 0; /* 0 means stop timer */
519 /* schedule a video refresh in 'delay' ms */
520 static void schedule_refresh(VideoState *is, int delay)
522 SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
525 /* get the current audio clock value */
526 static double get_audio_clock(VideoState *is)
529 int hw_buf_size, bytes_per_sec;
530 pts = is->audio_clock;
531 hw_buf_size = audio_write_get_buf_size(is);
534 bytes_per_sec = is->audio_st->codec.sample_rate *
535 2 * is->audio_st->codec.channels;
538 pts -= (double)hw_buf_size / bytes_per_sec;
542 /* get the current video clock value */
543 static double get_video_clock(VideoState *is)
549 delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
551 return is->video_current_pts + delta;
554 /* get the current external clock value */
555 static double get_external_clock(VideoState *is)
559 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
562 /* get the current master clock value */
563 static double get_master_clock(VideoState *is)
567 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
569 val = get_video_clock(is);
571 val = get_audio_clock(is);
572 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
574 val = get_audio_clock(is);
576 val = get_video_clock(is);
578 val = get_external_clock(is);
583 /* seek in the stream */
584 static void stream_seek(VideoState *is, int64_t pos)
590 /* pause or resume the video */
591 static void stream_pause(VideoState *is)
593 is->paused = !is->paused;
595 is->video_current_pts = get_video_clock(is);
599 /* called to display each frame */
600 static void video_refresh_timer(void *opaque)
602 VideoState *is = opaque;
604 double actual_delay, delay, sync_threshold, ref_clock, diff;
608 if (is->pictq_size == 0) {
609 /* if no picture, need to wait */
610 schedule_refresh(is, 40);
612 /* dequeue the picture */
613 vp = &is->pictq[is->pictq_rindex];
615 /* update current video pts */
616 is->video_current_pts = vp->pts;
617 is->video_current_pts_time = av_gettime();
619 /* compute nominal delay */
620 delay = vp->pts - is->frame_last_pts;
621 if (delay <= 0 || delay >= 1.0) {
622 /* if incorrect delay, use previous one */
623 delay = is->frame_last_delay;
625 is->frame_last_delay = delay;
626 is->frame_last_pts = vp->pts;
628 /* update delay to follow master synchronisation source */
629 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
630 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
631 /* if video is slave, we try to correct big delays by
632 duplicating or deleting a frame */
633 ref_clock = get_master_clock(is);
634 diff = vp->pts - ref_clock;
636 /* skip or repeat frame. We take into account the
637 delay to compute the threshold. I still don't know
638 if it is the best guess */
639 sync_threshold = AV_SYNC_THRESHOLD;
640 if (delay > sync_threshold)
641 sync_threshold = delay;
642 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
643 if (diff <= -sync_threshold)
645 else if (diff >= sync_threshold)
650 is->frame_timer += delay;
651 /* compute the REAL delay (we need to do that to avoid
653 actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
654 if (actual_delay < 0.010) {
655 /* XXX: should skip picture */
656 actual_delay = 0.010;
658 /* launch timer for next picture */
659 schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
661 #if defined(DEBUG_SYNC)
662 printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
663 delay, actual_delay, vp->pts, -diff);
666 /* display picture */
669 /* update queue size and signal for next picture */
670 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
671 is->pictq_rindex = 0;
673 SDL_LockMutex(is->pictq_mutex);
675 SDL_CondSignal(is->pictq_cond);
676 SDL_UnlockMutex(is->pictq_mutex);
678 } else if (is->audio_st) {
679 /* draw the next audio frame */
681 schedule_refresh(is, 40);
683 /* if only audio stream, then display the audio bars (better
684 than nothing, just to test the implementation */
686 /* display picture */
689 schedule_refresh(is, 100);
692 static int64_t last_time;
697 cur_time = av_gettime();
698 if (!last_time || (cur_time - last_time) >= 500 * 1000) {
702 aqsize = is->audioq.size;
704 vqsize = is->videoq.size;
706 if (is->audio_st && is->video_st)
707 av_diff = get_audio_clock(is) - get_video_clock(is);
708 printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB \r",
709 get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024);
711 last_time = cur_time;
716 /* allocate a picture (needs to do that in main thread to avoid
717 potential locking problems */
718 static void alloc_picture(void *opaque)
720 VideoState *is = opaque;
723 vp = &is->pictq[is->pictq_windex];
726 SDL_FreeYUVOverlay(vp->bmp);
729 /* XXX: use generic function */
730 /* XXX: disable overlay if no hardware acceleration or if RGB format */
731 switch(is->video_st->codec.pix_fmt) {
732 case PIX_FMT_YUV420P:
733 case PIX_FMT_YUV422P:
734 case PIX_FMT_YUV444P:
736 case PIX_FMT_YUV410P:
737 case PIX_FMT_YUV411P:
745 vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec.width,
746 is->video_st->codec.height,
749 vp->width = is->video_st->codec.width;
750 vp->height = is->video_st->codec.height;
752 SDL_LockMutex(is->pictq_mutex);
754 SDL_CondSignal(is->pictq_cond);
755 SDL_UnlockMutex(is->pictq_mutex);
758 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
764 /* wait until we have space to put a new picture */
765 SDL_LockMutex(is->pictq_mutex);
766 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
767 !is->videoq.abort_request) {
768 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
770 SDL_UnlockMutex(is->pictq_mutex);
772 if (is->videoq.abort_request)
775 vp = &is->pictq[is->pictq_windex];
777 /* alloc or resize hardware picture buffer */
779 vp->width != is->video_st->codec.width ||
780 vp->height != is->video_st->codec.height) {
785 /* the allocation must be done in the main thread to avoid
787 event.type = FF_ALLOC_EVENT;
788 event.user.data1 = is;
789 SDL_PushEvent(&event);
791 /* wait until the picture is allocated */
792 SDL_LockMutex(is->pictq_mutex);
793 while (!vp->allocated && !is->videoq.abort_request) {
794 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
796 SDL_UnlockMutex(is->pictq_mutex);
798 if (is->videoq.abort_request)
802 /* if the frame is not skipped, then display it */
804 /* get a pointer on the bitmap */
805 SDL_LockYUVOverlay (vp->bmp);
807 dst_pix_fmt = PIX_FMT_YUV420P;
808 pict.data[0] = vp->bmp->pixels[0];
809 pict.data[1] = vp->bmp->pixels[2];
810 pict.data[2] = vp->bmp->pixels[1];
812 pict.linesize[0] = vp->bmp->pitches[0];
813 pict.linesize[1] = vp->bmp->pitches[2];
814 pict.linesize[2] = vp->bmp->pitches[1];
815 img_convert(&pict, dst_pix_fmt,
816 (AVPicture *)src_frame, is->video_st->codec.pix_fmt,
817 is->video_st->codec.width, is->video_st->codec.height);
818 /* update the bitmap content */
819 SDL_UnlockYUVOverlay(vp->bmp);
823 /* now we can update the picture count */
824 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
825 is->pictq_windex = 0;
826 SDL_LockMutex(is->pictq_mutex);
828 SDL_UnlockMutex(is->pictq_mutex);
833 /* compute the exact PTS for the picture if it is omitted in the stream */
834 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
836 double frame_delay, pts;
840 /* if B frames are present, and if the current picture is a I
841 or P frame, we use the last pts */
842 if (is->video_st->codec.has_b_frames &&
843 src_frame->pict_type != FF_B_TYPE) {
845 pts = is->video_last_P_pts;
846 /* get the pts for the next I or P frame if present */
847 is->video_last_P_pts = pts1;
851 /* update video clock with pts, if present */
852 is->video_clock = pts;
854 pts = is->video_clock;
856 /* update video clock for next frame */
857 frame_delay = (double)is->video_st->codec.frame_rate_base /
858 (double)is->video_st->codec.frame_rate;
859 /* for MPEG2, the frame can be repeated, so we update the
861 if (src_frame->repeat_pict) {
862 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
864 is->video_clock += frame_delay;
866 #if defined(DEBUG_SYNC) && 0
869 if (src_frame->pict_type == FF_B_TYPE)
871 else if (src_frame->pict_type == FF_I_TYPE)
875 printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
879 return queue_picture(is, src_frame, pts);
882 static int video_thread(void *arg)
884 VideoState *is = arg;
885 AVPacket pkt1, *pkt = &pkt1;
886 int len1, got_picture;
887 AVFrame *frame= avcodec_alloc_frame();
891 while (is->paused && !is->videoq.abort_request) {
894 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
896 /* NOTE: ipts is the PTS of the _first_ picture beginning in
897 this packet, if any */
899 if (pkt->pts != AV_NOPTS_VALUE)
900 pts = (double)pkt->pts / AV_TIME_BASE;
902 if (is->video_st->codec.codec_id == CODEC_ID_RAWVIDEO) {
903 avpicture_fill((AVPicture *)frame, pkt->data,
904 is->video_st->codec.pix_fmt,
905 is->video_st->codec.width,
906 is->video_st->codec.height);
907 frame->pict_type = FF_I_TYPE;
908 if (output_picture2(is, frame, pts) < 0)
911 len1 = avcodec_decode_video(&is->video_st->codec,
913 pkt->data, pkt->size);
917 if (output_picture2(is, frame, pts) < 0)
928 /* copy samples for viewing in editor window */
929 static void update_sample_display(VideoState *is, short *samples, int samples_size)
931 int size, len, channels;
933 channels = is->audio_st->codec.channels;
935 size = samples_size / sizeof(short);
937 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
940 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
942 is->sample_array_index += len;
943 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
944 is->sample_array_index = 0;
949 /* return the new audio buffer size (samples can be added or deleted
950 to get better sync if video or external master clock) */
951 static int synchronize_audio(VideoState *is, short *samples,
952 int samples_size1, double pts)
957 n = 2 * is->audio_st->codec.channels;
958 samples_size = samples_size1;
960 /* if not master, then we try to remove or add samples to correct the clock */
961 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
962 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
963 double diff, avg_diff;
964 int wanted_size, min_size, max_size, nb_samples;
966 ref_clock = get_master_clock(is);
967 diff = get_audio_clock(is) - ref_clock;
969 if (diff < AV_NOSYNC_THRESHOLD) {
970 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
971 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
972 /* not enough measures to have a correct estimate */
973 is->audio_diff_avg_count++;
975 /* estimate the A-V difference */
976 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
978 if (fabs(avg_diff) >= is->audio_diff_threshold) {
979 wanted_size = samples_size + ((int)(diff * is->audio_st->codec.sample_rate) * n);
980 nb_samples = samples_size / n;
982 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
983 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
984 if (wanted_size < min_size)
985 wanted_size = min_size;
986 else if (wanted_size > max_size)
987 wanted_size = max_size;
989 /* add or remove samples to correction the synchro */
990 if (wanted_size < samples_size) {
992 samples_size = wanted_size;
993 } else if (wanted_size > samples_size) {
994 uint8_t *samples_end, *q;
998 nb = (samples_size - wanted_size);
999 samples_end = (uint8_t *)samples + samples_size - n;
1000 q = samples_end + n;
1002 memcpy(q, samples_end, n);
1006 samples_size = wanted_size;
1010 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1011 diff, avg_diff, samples_size - samples_size1,
1012 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1016 /* too big difference : may be initial PTS errors, so
1018 is->audio_diff_avg_count = 0;
1019 is->audio_diff_cum = 0;
1023 return samples_size;
1026 /* decode one audio frame and returns its uncompressed size */
1027 static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, double *pts_ptr)
1029 AVPacket *pkt = &is->audio_pkt;
1030 int n, len1, data_size;
1034 /* NOTE: the audio packet can contain several frames */
1035 while (is->audio_pkt_size > 0) {
1036 len1 = avcodec_decode_audio(&is->audio_st->codec,
1037 (int16_t *)audio_buf, &data_size,
1038 is->audio_pkt_data, is->audio_pkt_size);
1040 /* if error, we skip the frame */
1041 is->audio_pkt_size = 0;
1045 is->audio_pkt_data += len1;
1046 is->audio_pkt_size -= len1;
1049 /* if no pts, then compute it */
1050 pts = is->audio_clock;
1052 n = 2 * is->audio_st->codec.channels;
1053 is->audio_clock += (double)data_size /
1054 (double)(n * is->audio_st->codec.sample_rate);
1055 #if defined(DEBUG_SYNC)
1057 static double last_clock;
1058 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1059 is->audio_clock - last_clock,
1060 is->audio_clock, pts);
1061 last_clock = is->audio_clock;
1067 /* free the current packet */
1069 av_free_packet(pkt);
1071 if (is->paused || is->audioq.abort_request) {
1075 /* read next packet */
1076 if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1078 is->audio_pkt_data = pkt->data;
1079 is->audio_pkt_size = pkt->size;
1081 /* if update the audio clock with the pts */
1082 if (pkt->pts != AV_NOPTS_VALUE) {
1083 is->audio_clock = (double)pkt->pts / AV_TIME_BASE;
1088 /* get the current audio output buffer size, in samples. With SDL, we
1089 cannot have a precise information */
1090 static int audio_write_get_buf_size(VideoState *is)
1092 return is->audio_hw_buf_size - is->audio_buf_index;
1096 /* prepare a new audio buffer */
1097 void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1099 VideoState *is = opaque;
1100 int audio_size, len1;
1103 audio_callback_time = av_gettime();
1106 if (is->audio_buf_index >= is->audio_buf_size) {
1107 audio_size = audio_decode_frame(is, is->audio_buf, &pts);
1108 if (audio_size < 0) {
1109 /* if error, just output silence */
1110 is->audio_buf_size = 1024;
1111 memset(is->audio_buf, 0, is->audio_buf_size);
1114 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1115 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
1117 is->audio_buf_size = audio_size;
1119 is->audio_buf_index = 0;
1121 len1 = is->audio_buf_size - is->audio_buf_index;
1124 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1127 is->audio_buf_index += len1;
1132 /* open a given stream. Return 0 if OK */
1133 static int stream_component_open(VideoState *is, int stream_index)
1135 AVFormatContext *ic = is->ic;
1136 AVCodecContext *enc;
1138 SDL_AudioSpec wanted_spec, spec;
1140 if (stream_index < 0 || stream_index >= ic->nb_streams)
1142 enc = &ic->streams[stream_index]->codec;
1144 /* prepare audio output */
1145 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1146 wanted_spec.freq = enc->sample_rate;
1147 wanted_spec.format = AUDIO_S16SYS;
1148 /* hack for AC3. XXX: suppress that */
1149 if (enc->channels > 2)
1151 wanted_spec.channels = enc->channels;
1152 wanted_spec.silence = 0;
1153 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1154 wanted_spec.callback = sdl_audio_callback;
1155 wanted_spec.userdata = is;
1156 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1157 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1160 is->audio_hw_buf_size = spec.size;
1163 codec = avcodec_find_decoder(enc->codec_id);
1165 avcodec_open(enc, codec) < 0)
1167 switch(enc->codec_type) {
1168 case CODEC_TYPE_AUDIO:
1169 is->audio_stream = stream_index;
1170 is->audio_st = ic->streams[stream_index];
1171 is->audio_buf_size = 0;
1172 is->audio_buf_index = 0;
1174 /* init averaging filter */
1175 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1176 is->audio_diff_avg_count = 0;
1177 /* since we do not have a precise anough audio fifo fullness,
1178 we correct audio sync only if larger than this threshold */
1179 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1181 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1182 packet_queue_init(&is->audioq);
1185 case CODEC_TYPE_VIDEO:
1186 is->video_stream = stream_index;
1187 is->video_st = ic->streams[stream_index];
1189 is->frame_last_delay = 40e-3;
1190 is->frame_timer = (double)av_gettime() / 1000000.0;
1191 is->video_current_pts_time = av_gettime();
1193 packet_queue_init(&is->videoq);
1194 is->video_tid = SDL_CreateThread(video_thread, is);
1203 static void stream_component_close(VideoState *is, int stream_index)
1205 AVFormatContext *ic = is->ic;
1206 AVCodecContext *enc;
1208 enc = &ic->streams[stream_index]->codec;
1210 switch(enc->codec_type) {
1211 case CODEC_TYPE_AUDIO:
1212 packet_queue_abort(&is->audioq);
1216 packet_queue_end(&is->audioq);
1218 case CODEC_TYPE_VIDEO:
1219 packet_queue_abort(&is->videoq);
1221 /* note: we also signal this mutex to make sure we deblock the
1222 video thread in all cases */
1223 SDL_LockMutex(is->pictq_mutex);
1224 SDL_CondSignal(is->pictq_cond);
1225 SDL_UnlockMutex(is->pictq_mutex);
1227 SDL_WaitThread(is->video_tid, NULL);
1229 packet_queue_end(&is->videoq);
1236 switch(enc->codec_type) {
1237 case CODEC_TYPE_AUDIO:
1238 is->audio_st = NULL;
1239 is->audio_stream = -1;
1241 case CODEC_TYPE_VIDEO:
1242 is->video_st = NULL;
1243 is->video_stream = -1;
1250 void dump_stream_info(AVFormatContext *s)
1253 fprintf(stderr, "Track: %d\n", s->track);
1254 if (s->title[0] != '\0')
1255 fprintf(stderr, "Title: %s\n", s->title);
1256 if (s->author[0] != '\0')
1257 fprintf(stderr, "Author: %s\n", s->author);
1258 if (s->album[0] != '\0')
1259 fprintf(stderr, "Album: %s\n", s->album);
1261 fprintf(stderr, "Year: %d\n", s->year);
1262 if (s->genre[0] != '\0')
1263 fprintf(stderr, "Genre: %s\n", s->genre);
1266 /* since we have only one decoding thread, we can use a global
1267 variable instead of a thread local variable */
1268 static VideoState *global_video_state;
1270 static int decode_interrupt_cb(void)
1272 return (global_video_state && global_video_state->abort_request);
1275 /* this thread gets the stream from the disk or the network */
1276 static int decode_thread(void *arg)
1278 VideoState *is = arg;
1279 AVFormatContext *ic;
1280 int err, i, ret, video_index, audio_index, use_play;
1281 AVPacket pkt1, *pkt = &pkt1;
1282 AVFormatParameters params, *ap = ¶ms;
1286 is->video_stream = -1;
1287 is->audio_stream = -1;
1289 global_video_state = is;
1290 url_set_interrupt_cb(decode_interrupt_cb);
1292 memset(ap, 0, sizeof(*ap));
1293 ap->image_format = image_format;
1294 ap->initial_pause = 1; /* we force a pause when starting an RTSP
1297 err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1299 print_error(is->filename, err);
1304 #ifdef CONFIG_NETWORK
1305 use_play = (ic->iformat == &rtsp_demux);
1310 err = av_find_stream_info(ic);
1312 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1318 /* if seeking requested, we execute it */
1319 if (start_time != AV_NOPTS_VALUE) {
1322 timestamp = start_time;
1323 /* add the stream start time */
1324 if (ic->start_time != AV_NOPTS_VALUE)
1325 timestamp += ic->start_time;
1326 ret = av_seek_frame(ic, -1, timestamp);
1328 fprintf(stderr, "%s: could not seek to position %0.3f\n",
1329 is->filename, (double)timestamp / AV_TIME_BASE);
1333 /* now we can begin to play (RTSP stream only) */
1337 err = av_find_stream_info(ic);
1339 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1345 for(i = 0; i < ic->nb_streams; i++) {
1346 AVCodecContext *enc = &ic->streams[i]->codec;
1347 switch(enc->codec_type) {
1348 case CODEC_TYPE_AUDIO:
1349 if (audio_index < 0 && !audio_disable)
1352 case CODEC_TYPE_VIDEO:
1353 if (video_index < 0 && !video_disable)
1361 dump_format(ic, 0, is->filename, 0);
1362 dump_stream_info(ic);
1365 /* open the streams */
1366 if (audio_index >= 0) {
1367 stream_component_open(is, audio_index);
1370 if (video_index >= 0) {
1371 stream_component_open(is, video_index);
1373 if (!display_disable)
1377 if (is->video_stream < 0 && is->audio_stream < 0) {
1378 fprintf(stderr, "%s: could not open codecs\n", is->filename);
1384 if (is->abort_request)
1386 #ifdef CONFIG_NETWORK
1387 if (is->paused != is->last_paused) {
1388 is->last_paused = is->paused;
1394 if (is->paused && ic->iformat == &rtsp_demux) {
1395 /* wait 10 ms to avoid trying to get another packet */
1402 /* XXX: must lock decoder threads */
1403 if (is->audio_stream >= 0) {
1404 packet_queue_flush(&is->audioq);
1406 if (is->video_stream >= 0) {
1407 packet_queue_flush(&is->videoq);
1409 ret = av_seek_frame(is->ic, -1, is->seek_pos);
1411 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
1416 /* if the queue are full, no need to read more */
1417 if (is->audioq.size > MAX_AUDIOQ_SIZE ||
1418 is->videoq.size > MAX_VIDEOQ_SIZE) {
1423 ret = av_read_frame(ic, pkt);
1427 if (pkt->stream_index == is->audio_stream) {
1428 packet_queue_put(&is->audioq, pkt);
1429 } else if (pkt->stream_index == is->video_stream) {
1430 packet_queue_put(&is->videoq, pkt);
1432 av_free_packet(pkt);
1435 /* wait until the end */
1436 while (!is->abort_request) {
1442 /* disable interrupting */
1443 global_video_state = NULL;
1445 /* close each stream */
1446 if (is->audio_stream >= 0)
1447 stream_component_close(is, is->audio_stream);
1448 if (is->video_stream >= 0)
1449 stream_component_close(is, is->video_stream);
1451 av_close_input_file(is->ic);
1452 is->ic = NULL; /* safety */
1454 url_set_interrupt_cb(NULL);
1459 event.type = FF_QUIT_EVENT;
1460 event.user.data1 = is;
1461 SDL_PushEvent(&event);
1466 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
1470 is = av_mallocz(sizeof(VideoState));
1473 pstrcpy(is->filename, sizeof(is->filename), filename);
1474 is->iformat = iformat;
1476 is->width = screen->w;
1477 is->height = screen->h;
1482 /* start video display */
1483 is->pictq_mutex = SDL_CreateMutex();
1484 is->pictq_cond = SDL_CreateCond();
1486 /* add the refresh timer to draw the picture */
1487 schedule_refresh(is, 40);
1489 is->av_sync_type = av_sync_type;
1490 is->parse_tid = SDL_CreateThread(decode_thread, is);
1491 if (!is->parse_tid) {
1498 static void stream_close(VideoState *is)
1502 /* XXX: use a special url_shutdown call to abort parse cleanly */
1503 is->abort_request = 1;
1504 SDL_WaitThread(is->parse_tid, NULL);
1506 /* free all pictures */
1507 for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
1510 SDL_FreeYUVOverlay(vp->bmp);
1514 SDL_DestroyMutex(is->pictq_mutex);
1515 SDL_DestroyCond(is->pictq_cond);
1518 void stream_cycle_channel(VideoState *is, int codec_type)
1520 AVFormatContext *ic = is->ic;
1521 int start_index, stream_index;
1524 if (codec_type == CODEC_TYPE_VIDEO)
1525 start_index = is->video_stream;
1527 start_index = is->audio_stream;
1528 if (start_index < 0)
1530 stream_index = start_index;
1532 if (++stream_index >= is->ic->nb_streams)
1534 if (stream_index == start_index)
1536 st = ic->streams[stream_index];
1537 if (st->codec.codec_type == codec_type) {
1538 /* check that parameters are OK */
1539 switch(codec_type) {
1540 case CODEC_TYPE_AUDIO:
1541 if (st->codec.sample_rate != 0 &&
1542 st->codec.channels != 0)
1545 case CODEC_TYPE_VIDEO:
1553 stream_component_close(is, start_index);
1554 stream_component_open(is, stream_index);
1558 void toggle_full_screen(void)
1561 is_full_screen = !is_full_screen;
1562 if (!fs_screen_width) {
1563 /* use default SDL method */
1564 SDL_WM_ToggleFullScreen(screen);
1566 /* use the recorded resolution */
1567 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1568 if (is_full_screen) {
1569 w = fs_screen_width;
1570 h = fs_screen_height;
1571 flags |= SDL_FULLSCREEN;
1575 flags |= SDL_RESIZABLE;
1577 screen = SDL_SetVideoMode(w, h, 0, flags);
1578 cur_stream->width = w;
1579 cur_stream->height = h;
1583 void toggle_pause(void)
1586 stream_pause(cur_stream);
1592 stream_close(cur_stream);
1601 void toggle_audio_display(void)
1604 cur_stream->show_audio = !cur_stream->show_audio;
1608 /* handle an event sent by the GUI */
1609 void event_loop(void)
1615 SDL_WaitEvent(&event);
1616 switch(event.type) {
1618 switch(event.key.keysym.sym) {
1624 toggle_full_screen();
1632 stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
1636 stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
1639 toggle_audio_display();
1654 pos = get_master_clock(cur_stream);
1656 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE));
1663 case SDL_VIDEORESIZE:
1665 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
1666 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
1667 cur_stream->width = event.resize.w;
1668 cur_stream->height = event.resize.h;
1675 case FF_ALLOC_EVENT:
1676 alloc_picture(event.user.data1);
1678 case FF_REFRESH_EVENT:
1679 video_refresh_timer(event.user.data1);
1687 void opt_width(const char *arg)
1689 screen_width = atoi(arg);
1692 void opt_height(const char *arg)
1694 screen_height = atoi(arg);
1697 static void opt_format(const char *arg)
1699 file_iformat = av_find_input_format(arg);
1700 if (!file_iformat) {
1701 fprintf(stderr, "Unknown input format: %s\n", arg);
1706 static void opt_image_format(const char *arg)
1710 for(f = first_image_format; f != NULL; f = f->next) {
1711 if (!strcmp(arg, f->name))
1715 fprintf(stderr, "Unknown image format: '%s'\n", arg);
1721 #ifdef CONFIG_NETWORK
1722 void opt_rtp_tcp(void)
1724 /* only tcp protocol */
1725 rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
1729 void opt_sync(const char *arg)
1731 if (!strcmp(arg, "audio"))
1732 av_sync_type = AV_SYNC_AUDIO_MASTER;
1733 else if (!strcmp(arg, "video"))
1734 av_sync_type = AV_SYNC_VIDEO_MASTER;
1735 else if (!strcmp(arg, "ext"))
1736 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
1741 void opt_seek(const char *arg)
1743 start_time = parse_date(arg, 1);
1746 static void opt_debug(const char *arg)
1751 const OptionDef options[] = {
1752 { "h", 0, {(void*)show_help}, "show help" },
1753 { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
1754 { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
1756 /* disabled as SDL/X11 does not support it correctly on application launch */
1757 { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
1759 { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
1760 { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
1761 { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
1762 { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
1763 { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
1764 { "img", HAS_ARG, {(void*)opt_image_format}, "force image format", "img_fmt" },
1765 { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
1766 { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
1767 #ifdef CONFIG_NETWORK
1768 { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
1770 { "sync", HAS_ARG | OPT_EXPERT, {(void*)&opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
1774 void show_help(void)
1776 printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
1777 "usage: ffplay [options] input_file\n"
1778 "Simple media player\n");
1780 show_help_options(options, "Main options:\n",
1782 show_help_options(options, "\nAdvanced options:\n",
1783 OPT_EXPERT, OPT_EXPERT);
1784 printf("\nWhile playing:\n"
1786 "f toggle full screen\n"
1788 "a cycle audio channel\n"
1789 "v cycle video channel\n"
1790 "w show audio waves\n"
1791 "left/right seek backward/forward 10 seconds\n"
1792 "down/up seek backward/forward 1 minute\n"
1797 void parse_arg_file(const char *filename)
1799 if (!strcmp(filename, "-"))
1801 input_filename = filename;
1804 /* Called from the main */
1805 int main(int argc, char **argv)
1809 /* register all codecs, demux and protocols */
1812 parse_options(argc, argv, options);
1814 if (!input_filename)
1817 if (display_disable) {
1820 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
1821 #ifndef CONFIG_WIN32
1822 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 */
1824 if (SDL_Init (flags)) {
1825 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
1829 if (!display_disable) {
1831 /* save the screen resolution... SDL should allow full screen
1832 by resizing the window */
1835 dpy = XOpenDisplay(NULL);
1837 fs_screen_width = DisplayWidth(dpy, DefaultScreen(dpy));
1838 fs_screen_height = DisplayHeight(dpy, DefaultScreen(dpy));
1843 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1844 if (is_full_screen && fs_screen_width) {
1845 w = fs_screen_width;
1846 h = fs_screen_height;
1847 flags |= SDL_FULLSCREEN;
1851 flags |= SDL_RESIZABLE;
1853 screen = SDL_SetVideoMode(w, h, 0, flags);
1855 fprintf(stderr, "SDL: could not set video mode - exiting\n");
1858 SDL_WM_SetCaption("FFplay", "FFplay");
1861 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
1862 SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
1863 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
1864 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
1866 cur_stream = stream_open(input_filename, file_iformat);