10l (fix reordering when B-frames are not present)
[libav.git] / ffplay.c
1 /*
2 * FFplay : Simple Media Player based on the ffmpeg libraries
3 * Copyright (c) 2003 Fabrice Bellard
4 *
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.
9 *
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.
14 *
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
18 */
19 #define HAVE_AV_CONFIG_H
20 #include "avformat.h"
21
22 #include "cmdutils.h"
23
24 #include <SDL.h>
25 #include <SDL_thread.h>
26
27 #ifdef CONFIG_WIN32
28 #undef main /* We don't want SDL to override our main() */
29 #endif
30
31 #if defined(__linux__)
32 #define HAVE_X11
33 #endif
34
35 #ifdef HAVE_X11
36 #include <X11/Xlib.h>
37 #endif
38
39 //#define DEBUG_SYNC
40
41 #define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
42 #define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
43
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
47
48 /* no AV sync correction is done if below the AV sync threshold */
49 #define AV_SYNC_THRESHOLD 0.01
50 /* no AV correction is done if too big error */
51 #define AV_NOSYNC_THRESHOLD 10.0
52
53 /* maximum audio speed change to get correct sync */
54 #define SAMPLE_CORRECTION_PERCENT_MAX 10
55
56 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
57 #define AUDIO_DIFF_AVG_NB 20
58
59 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
60 #define SAMPLE_ARRAY_SIZE (2*65536)
61
62 typedef struct PacketQueue {
63 AVPacketList *first_pkt, *last_pkt;
64 int nb_packets;
65 int size;
66 int abort_request;
67 SDL_mutex *mutex;
68 SDL_cond *cond;
69 } PacketQueue;
70
71 #define VIDEO_PICTURE_QUEUE_SIZE 1
72
73 typedef struct VideoPicture {
74 double pts; /* presentation time stamp for this picture */
75 SDL_Overlay *bmp;
76 int width, height; /* source height & width */
77 int allocated;
78 } VideoPicture;
79
80 enum {
81 AV_SYNC_AUDIO_MASTER, /* default choice */
82 AV_SYNC_VIDEO_MASTER,
83 AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
84 };
85
86 typedef struct VideoState {
87 SDL_Thread *parse_tid;
88 SDL_Thread *video_tid;
89 AVInputFormat *iformat;
90 int no_background;
91 int abort_request;
92 int paused;
93 int last_paused;
94 int seek_req;
95 int seek_flags;
96 int64_t seek_pos;
97 AVFormatContext *ic;
98 int dtg_active_format;
99
100 int audio_stream;
101
102 int av_sync_type;
103 double external_clock; /* external clock base */
104 int64_t external_clock_time;
105
106 double audio_clock;
107 double audio_diff_cum; /* used for AV difference average computation */
108 double audio_diff_avg_coef;
109 double audio_diff_threshold;
110 int audio_diff_avg_count;
111 AVStream *audio_st;
112 PacketQueue audioq;
113 int audio_hw_buf_size;
114 /* samples output by the codec. we reserve more space for avsync
115 compensation */
116 uint8_t audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
117 unsigned int audio_buf_size; /* in bytes */
118 int audio_buf_index; /* in bytes */
119 AVPacket audio_pkt;
120 uint8_t *audio_pkt_data;
121 int audio_pkt_size;
122
123 int show_audio; /* if true, display audio samples */
124 int16_t sample_array[SAMPLE_ARRAY_SIZE];
125 int sample_array_index;
126 int last_i_start;
127
128 double frame_timer;
129 double frame_last_pts;
130 double frame_last_delay;
131 double video_clock;
132 int video_stream;
133 AVStream *video_st;
134 PacketQueue videoq;
135 double video_last_P_pts; /* pts of the last P picture (needed if B
136 frames are present) */
137 double video_current_pts; /* current displayed pts (different from
138 video_clock if frame fifos are used) */
139 int64_t video_current_pts_time; /* time at which we updated
140 video_current_pts - used to
141 have running video pts */
142 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
143 int pictq_size, pictq_rindex, pictq_windex;
144 SDL_mutex *pictq_mutex;
145 SDL_cond *pictq_cond;
146
147 SDL_mutex *video_decoder_mutex;
148 SDL_mutex *audio_decoder_mutex;
149
150 // QETimer *video_timer;
151 char filename[1024];
152 int width, height, xleft, ytop;
153 } VideoState;
154
155 void show_help(void);
156 static int audio_write_get_buf_size(VideoState *is);
157
158 /* options specified by the user */
159 static AVInputFormat *file_iformat;
160 static AVImageFormat *image_format;
161 static const char *input_filename;
162 static int fs_screen_width;
163 static int fs_screen_height;
164 static int screen_width = 640;
165 static int screen_height = 480;
166 static int audio_disable;
167 static int video_disable;
168 static int display_disable;
169 static int show_status;
170 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
171 static int64_t start_time = AV_NOPTS_VALUE;
172 static int debug = 0;
173 static int debug_mv = 0;
174 static int step = 0;
175 static int thread_count = 1;
176 static int workaround_bugs = 1;
177 static int fast = 0;
178 static int lowres = 0;
179 static int idct = FF_IDCT_AUTO;
180
181 /* current context */
182 static int is_full_screen;
183 static VideoState *cur_stream;
184 static int64_t audio_callback_time;
185
186 #define FF_ALLOC_EVENT (SDL_USEREVENT)
187 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
188 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
189
190 SDL_Surface *screen;
191
192 /* packet queue handling */
193 static void packet_queue_init(PacketQueue *q)
194 {
195 memset(q, 0, sizeof(PacketQueue));
196 q->mutex = SDL_CreateMutex();
197 q->cond = SDL_CreateCond();
198 }
199
200 static void packet_queue_flush(PacketQueue *q)
201 {
202 AVPacketList *pkt, *pkt1;
203
204 for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
205 pkt1 = pkt->next;
206 av_free_packet(&pkt->pkt);
207 av_freep(&pkt);
208 }
209 q->last_pkt = NULL;
210 q->first_pkt = NULL;
211 q->nb_packets = 0;
212 q->size = 0;
213 }
214
215 static void packet_queue_end(PacketQueue *q)
216 {
217 packet_queue_flush(q);
218 SDL_DestroyMutex(q->mutex);
219 SDL_DestroyCond(q->cond);
220 }
221
222 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
223 {
224 AVPacketList *pkt1;
225
226 /* duplicate the packet */
227 if (av_dup_packet(pkt) < 0)
228 return -1;
229
230 pkt1 = av_malloc(sizeof(AVPacketList));
231 if (!pkt1)
232 return -1;
233 pkt1->pkt = *pkt;
234 pkt1->next = NULL;
235
236
237 SDL_LockMutex(q->mutex);
238
239 if (!q->last_pkt)
240
241 q->first_pkt = pkt1;
242 else
243 q->last_pkt->next = pkt1;
244 q->last_pkt = pkt1;
245 q->nb_packets++;
246 q->size += pkt1->pkt.size;
247 /* XXX: should duplicate packet data in DV case */
248 SDL_CondSignal(q->cond);
249
250 SDL_UnlockMutex(q->mutex);
251 return 0;
252 }
253
254 static void packet_queue_abort(PacketQueue *q)
255 {
256 SDL_LockMutex(q->mutex);
257
258 q->abort_request = 1;
259
260 SDL_CondSignal(q->cond);
261
262 SDL_UnlockMutex(q->mutex);
263 }
264
265 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
266 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
267 {
268 AVPacketList *pkt1;
269 int ret;
270
271 SDL_LockMutex(q->mutex);
272
273 for(;;) {
274 if (q->abort_request) {
275 ret = -1;
276 break;
277 }
278
279 pkt1 = q->first_pkt;
280 if (pkt1) {
281 q->first_pkt = pkt1->next;
282 if (!q->first_pkt)
283 q->last_pkt = NULL;
284 q->nb_packets--;
285 q->size -= pkt1->pkt.size;
286 *pkt = pkt1->pkt;
287 av_free(pkt1);
288 ret = 1;
289 break;
290 } else if (!block) {
291 ret = 0;
292 break;
293 } else {
294 SDL_CondWait(q->cond, q->mutex);
295 }
296 }
297 SDL_UnlockMutex(q->mutex);
298 return ret;
299 }
300
301 static inline void fill_rectangle(SDL_Surface *screen,
302 int x, int y, int w, int h, int color)
303 {
304 SDL_Rect rect;
305 rect.x = x;
306 rect.y = y;
307 rect.w = w;
308 rect.h = h;
309 SDL_FillRect(screen, &rect, color);
310 }
311
312 #if 0
313 /* draw only the border of a rectangle */
314 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
315 {
316 int w1, w2, h1, h2;
317
318 /* fill the background */
319 w1 = x;
320 if (w1 < 0)
321 w1 = 0;
322 w2 = s->width - (x + w);
323 if (w2 < 0)
324 w2 = 0;
325 h1 = y;
326 if (h1 < 0)
327 h1 = 0;
328 h2 = s->height - (y + h);
329 if (h2 < 0)
330 h2 = 0;
331 fill_rectangle(screen,
332 s->xleft, s->ytop,
333 w1, s->height,
334 color);
335 fill_rectangle(screen,
336 s->xleft + s->width - w2, s->ytop,
337 w2, s->height,
338 color);
339 fill_rectangle(screen,
340 s->xleft + w1, s->ytop,
341 s->width - w1 - w2, h1,
342 color);
343 fill_rectangle(screen,
344 s->xleft + w1, s->ytop + s->height - h2,
345 s->width - w1 - w2, h2,
346 color);
347 }
348 #endif
349
350 static void video_image_display(VideoState *is)
351 {
352 VideoPicture *vp;
353 float aspect_ratio;
354 int width, height, x, y;
355 SDL_Rect rect;
356
357 vp = &is->pictq[is->pictq_rindex];
358 if (vp->bmp) {
359 /* XXX: use variable in the frame */
360 if (is->video_st->codec.sample_aspect_ratio.num == 0)
361 aspect_ratio = 0;
362 else
363 aspect_ratio = av_q2d(is->video_st->codec.sample_aspect_ratio)
364 * is->video_st->codec.width / is->video_st->codec.height;;
365 if (aspect_ratio <= 0.0)
366 aspect_ratio = (float)is->video_st->codec.width /
367 (float)is->video_st->codec.height;
368 /* if an active format is indicated, then it overrides the
369 mpeg format */
370 #if 0
371 if (is->video_st->codec.dtg_active_format != is->dtg_active_format) {
372 is->dtg_active_format = is->video_st->codec.dtg_active_format;
373 printf("dtg_active_format=%d\n", is->dtg_active_format);
374 }
375 #endif
376 #if 0
377 switch(is->video_st->codec.dtg_active_format) {
378 case FF_DTG_AFD_SAME:
379 default:
380 /* nothing to do */
381 break;
382 case FF_DTG_AFD_4_3:
383 aspect_ratio = 4.0 / 3.0;
384 break;
385 case FF_DTG_AFD_16_9:
386 aspect_ratio = 16.0 / 9.0;
387 break;
388 case FF_DTG_AFD_14_9:
389 aspect_ratio = 14.0 / 9.0;
390 break;
391 case FF_DTG_AFD_4_3_SP_14_9:
392 aspect_ratio = 14.0 / 9.0;
393 break;
394 case FF_DTG_AFD_16_9_SP_14_9:
395 aspect_ratio = 14.0 / 9.0;
396 break;
397 case FF_DTG_AFD_SP_4_3:
398 aspect_ratio = 4.0 / 3.0;
399 break;
400 }
401 #endif
402
403 /* XXX: we suppose the screen has a 1.0 pixel ratio */
404 height = is->height;
405 width = ((int)rint(height * aspect_ratio)) & -3;
406 if (width > is->width) {
407 width = is->width;
408 height = ((int)rint(width / aspect_ratio)) & -3;
409 }
410 x = (is->width - width) / 2;
411 y = (is->height - height) / 2;
412 if (!is->no_background) {
413 /* fill the background */
414 // fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
415 } else {
416 is->no_background = 0;
417 }
418 rect.x = is->xleft + x;
419 rect.y = is->xleft + y;
420 rect.w = width;
421 rect.h = height;
422 SDL_DisplayYUVOverlay(vp->bmp, &rect);
423 } else {
424 #if 0
425 fill_rectangle(screen,
426 is->xleft, is->ytop, is->width, is->height,
427 QERGB(0x00, 0x00, 0x00));
428 #endif
429 }
430 }
431
432 static inline int compute_mod(int a, int b)
433 {
434 a = a % b;
435 if (a >= 0)
436 return a;
437 else
438 return a + b;
439 }
440
441 static void video_audio_display(VideoState *s)
442 {
443 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
444 int ch, channels, h, h2, bgcolor, fgcolor;
445 int16_t time_diff;
446
447 /* compute display index : center on currently output samples */
448 channels = s->audio_st->codec.channels;
449 nb_display_channels = channels;
450 if (!s->paused) {
451 n = 2 * channels;
452 delay = audio_write_get_buf_size(s);
453 delay /= n;
454
455 /* to be more precise, we take into account the time spent since
456 the last buffer computation */
457 if (audio_callback_time) {
458 time_diff = av_gettime() - audio_callback_time;
459 delay += (time_diff * s->audio_st->codec.sample_rate) / 1000000;
460 }
461
462 delay -= s->width / 2;
463 if (delay < s->width)
464 delay = s->width;
465 i_start = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
466 s->last_i_start = i_start;
467 } else {
468 i_start = s->last_i_start;
469 }
470
471 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
472 fill_rectangle(screen,
473 s->xleft, s->ytop, s->width, s->height,
474 bgcolor);
475
476 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
477
478 /* total height for one channel */
479 h = s->height / nb_display_channels;
480 /* graph height / 2 */
481 h2 = (h * 9) / 20;
482 for(ch = 0;ch < nb_display_channels; ch++) {
483 i = i_start + ch;
484 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
485 for(x = 0; x < s->width; x++) {
486 y = (s->sample_array[i] * h2) >> 15;
487 if (y < 0) {
488 y = -y;
489 ys = y1 - y;
490 } else {
491 ys = y1;
492 }
493 fill_rectangle(screen,
494 s->xleft + x, ys, 1, y,
495 fgcolor);
496 i += channels;
497 if (i >= SAMPLE_ARRAY_SIZE)
498 i -= SAMPLE_ARRAY_SIZE;
499 }
500 }
501
502 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
503
504 for(ch = 1;ch < nb_display_channels; ch++) {
505 y = s->ytop + ch * h;
506 fill_rectangle(screen,
507 s->xleft, y, s->width, 1,
508 fgcolor);
509 }
510 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
511 }
512
513 /* display the current picture, if any */
514 static void video_display(VideoState *is)
515 {
516 if (is->audio_st && is->show_audio)
517 video_audio_display(is);
518 else if (is->video_st)
519 video_image_display(is);
520 }
521
522 static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
523 {
524 SDL_Event event;
525 event.type = FF_REFRESH_EVENT;
526 event.user.data1 = opaque;
527 SDL_PushEvent(&event);
528 return 0; /* 0 means stop timer */
529 }
530
531 /* schedule a video refresh in 'delay' ms */
532 static void schedule_refresh(VideoState *is, int delay)
533 {
534 SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
535 }
536
537 /* get the current audio clock value */
538 static double get_audio_clock(VideoState *is)
539 {
540 double pts;
541 int hw_buf_size, bytes_per_sec;
542 pts = is->audio_clock;
543 hw_buf_size = audio_write_get_buf_size(is);
544 bytes_per_sec = 0;
545 if (is->audio_st) {
546 bytes_per_sec = is->audio_st->codec.sample_rate *
547 2 * is->audio_st->codec.channels;
548 }
549 if (bytes_per_sec)
550 pts -= (double)hw_buf_size / bytes_per_sec;
551 return pts;
552 }
553
554 /* get the current video clock value */
555 static double get_video_clock(VideoState *is)
556 {
557 double delta;
558 if (is->paused) {
559 delta = 0;
560 } else {
561 delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
562 }
563 return is->video_current_pts + delta;
564 }
565
566 /* get the current external clock value */
567 static double get_external_clock(VideoState *is)
568 {
569 int64_t ti;
570 ti = av_gettime();
571 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
572 }
573
574 /* get the current master clock value */
575 static double get_master_clock(VideoState *is)
576 {
577 double val;
578
579 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
580 if (is->video_st)
581 val = get_video_clock(is);
582 else
583 val = get_audio_clock(is);
584 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
585 if (is->audio_st)
586 val = get_audio_clock(is);
587 else
588 val = get_video_clock(is);
589 } else {
590 val = get_external_clock(is);
591 }
592 return val;
593 }
594
595 /* seek in the stream */
596 static void stream_seek(VideoState *is, int64_t pos, int rel)
597 {
598 is->seek_pos = pos;
599 is->seek_req = 1;
600 is->seek_flags = rel < 0 ? AVSEEK_FLAG_BACKWARD : 0;
601 }
602
603 /* pause or resume the video */
604 static void stream_pause(VideoState *is)
605 {
606 is->paused = !is->paused;
607 if (is->paused) {
608 is->video_current_pts = get_video_clock(is);
609 }
610 }
611
612 /* called to display each frame */
613 static void video_refresh_timer(void *opaque)
614 {
615 VideoState *is = opaque;
616 VideoPicture *vp;
617 double actual_delay, delay, sync_threshold, ref_clock, diff;
618
619
620 if (is->video_st) {
621 if (is->pictq_size == 0) {
622 /* if no picture, need to wait */
623 schedule_refresh(is, 1);
624 } else {
625 /* dequeue the picture */
626 vp = &is->pictq[is->pictq_rindex];
627
628 /* update current video pts */
629 is->video_current_pts = vp->pts;
630 is->video_current_pts_time = av_gettime();
631
632 /* compute nominal delay */
633 delay = vp->pts - is->frame_last_pts;
634 if (delay <= 0 || delay >= 1.0) {
635 /* if incorrect delay, use previous one */
636 delay = is->frame_last_delay;
637 }
638 is->frame_last_delay = delay;
639 is->frame_last_pts = vp->pts;
640
641 /* update delay to follow master synchronisation source */
642 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
643 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
644 /* if video is slave, we try to correct big delays by
645 duplicating or deleting a frame */
646 ref_clock = get_master_clock(is);
647 diff = vp->pts - ref_clock;
648
649 /* skip or repeat frame. We take into account the
650 delay to compute the threshold. I still don't know
651 if it is the best guess */
652 sync_threshold = AV_SYNC_THRESHOLD;
653 if (delay > sync_threshold)
654 sync_threshold = delay;
655 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
656 if (diff <= -sync_threshold)
657 delay = 0;
658 else if (diff >= sync_threshold)
659 delay = 2 * delay;
660 }
661 }
662
663 is->frame_timer += delay;
664 /* compute the REAL delay (we need to do that to avoid
665 long term errors */
666 actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
667 if (actual_delay < 0.010) {
668 /* XXX: should skip picture */
669 actual_delay = 0.010;
670 }
671 /* launch timer for next picture */
672 schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
673
674 #if defined(DEBUG_SYNC)
675 printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
676 delay, actual_delay, vp->pts, -diff);
677 #endif
678
679 /* display picture */
680 video_display(is);
681
682 /* update queue size and signal for next picture */
683 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
684 is->pictq_rindex = 0;
685
686 SDL_LockMutex(is->pictq_mutex);
687 is->pictq_size--;
688 SDL_CondSignal(is->pictq_cond);
689 SDL_UnlockMutex(is->pictq_mutex);
690 }
691 } else if (is->audio_st) {
692 /* draw the next audio frame */
693
694 schedule_refresh(is, 40);
695
696 /* if only audio stream, then display the audio bars (better
697 than nothing, just to test the implementation */
698
699 /* display picture */
700 video_display(is);
701 } else {
702 schedule_refresh(is, 100);
703 }
704 if (show_status) {
705 static int64_t last_time;
706 int64_t cur_time;
707 int aqsize, vqsize;
708 double av_diff;
709
710 cur_time = av_gettime();
711 if (!last_time || (cur_time - last_time) >= 500 * 1000) {
712 aqsize = 0;
713 vqsize = 0;
714 if (is->audio_st)
715 aqsize = is->audioq.size;
716 if (is->video_st)
717 vqsize = is->videoq.size;
718 av_diff = 0;
719 if (is->audio_st && is->video_st)
720 av_diff = get_audio_clock(is) - get_video_clock(is);
721 printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB \r",
722 get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024);
723 fflush(stdout);
724 last_time = cur_time;
725 }
726 }
727 }
728
729 /* allocate a picture (needs to do that in main thread to avoid
730 potential locking problems */
731 static void alloc_picture(void *opaque)
732 {
733 VideoState *is = opaque;
734 VideoPicture *vp;
735
736 vp = &is->pictq[is->pictq_windex];
737
738 if (vp->bmp)
739 SDL_FreeYUVOverlay(vp->bmp);
740
741 #if 0
742 /* XXX: use generic function */
743 /* XXX: disable overlay if no hardware acceleration or if RGB format */
744 switch(is->video_st->codec.pix_fmt) {
745 case PIX_FMT_YUV420P:
746 case PIX_FMT_YUV422P:
747 case PIX_FMT_YUV444P:
748 case PIX_FMT_YUV422:
749 case PIX_FMT_YUV410P:
750 case PIX_FMT_YUV411P:
751 is_yuv = 1;
752 break;
753 default:
754 is_yuv = 0;
755 break;
756 }
757 #endif
758 vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec.width,
759 is->video_st->codec.height,
760 SDL_YV12_OVERLAY,
761 screen);
762 vp->width = is->video_st->codec.width;
763 vp->height = is->video_st->codec.height;
764
765 SDL_LockMutex(is->pictq_mutex);
766 vp->allocated = 1;
767 SDL_CondSignal(is->pictq_cond);
768 SDL_UnlockMutex(is->pictq_mutex);
769 }
770
771 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
772 {
773 VideoPicture *vp;
774 int dst_pix_fmt;
775 AVPicture pict;
776
777 /* wait until we have space to put a new picture */
778 SDL_LockMutex(is->pictq_mutex);
779 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
780 !is->videoq.abort_request) {
781 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
782 }
783 SDL_UnlockMutex(is->pictq_mutex);
784
785 if (is->videoq.abort_request)
786 return -1;
787
788 vp = &is->pictq[is->pictq_windex];
789
790 /* alloc or resize hardware picture buffer */
791 if (!vp->bmp ||
792 vp->width != is->video_st->codec.width ||
793 vp->height != is->video_st->codec.height) {
794 SDL_Event event;
795
796 vp->allocated = 0;
797
798 /* the allocation must be done in the main thread to avoid
799 locking problems */
800 event.type = FF_ALLOC_EVENT;
801 event.user.data1 = is;
802 SDL_PushEvent(&event);
803
804 /* wait until the picture is allocated */
805 SDL_LockMutex(is->pictq_mutex);
806 while (!vp->allocated && !is->videoq.abort_request) {
807 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
808 }
809 SDL_UnlockMutex(is->pictq_mutex);
810
811 if (is->videoq.abort_request)
812 return -1;
813 }
814
815 /* if the frame is not skipped, then display it */
816 if (vp->bmp) {
817 /* get a pointer on the bitmap */
818 SDL_LockYUVOverlay (vp->bmp);
819
820 dst_pix_fmt = PIX_FMT_YUV420P;
821 pict.data[0] = vp->bmp->pixels[0];
822 pict.data[1] = vp->bmp->pixels[2];
823 pict.data[2] = vp->bmp->pixels[1];
824
825 pict.linesize[0] = vp->bmp->pitches[0];
826 pict.linesize[1] = vp->bmp->pitches[2];
827 pict.linesize[2] = vp->bmp->pitches[1];
828 img_convert(&pict, dst_pix_fmt,
829 (AVPicture *)src_frame, is->video_st->codec.pix_fmt,
830 is->video_st->codec.width, is->video_st->codec.height);
831 /* update the bitmap content */
832 SDL_UnlockYUVOverlay(vp->bmp);
833
834 vp->pts = pts;
835
836 /* now we can update the picture count */
837 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
838 is->pictq_windex = 0;
839 SDL_LockMutex(is->pictq_mutex);
840 is->pictq_size++;
841 SDL_UnlockMutex(is->pictq_mutex);
842 }
843 return 0;
844 }
845
846 /* compute the exact PTS for the picture if it is omitted in the stream */
847 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
848 {
849 double frame_delay, pts;
850
851 pts = pts1;
852
853 if (pts != 0) {
854 /* update video clock with pts, if present */
855 is->video_clock = pts;
856 } else {
857 pts = is->video_clock;
858 }
859 /* update video clock for next frame */
860 frame_delay = (double)is->video_st->codec.frame_rate_base /
861 (double)is->video_st->codec.frame_rate;
862 /* for MPEG2, the frame can be repeated, so we update the
863 clock accordingly */
864 if (src_frame->repeat_pict) {
865 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
866 }
867 is->video_clock += frame_delay;
868
869 #if defined(DEBUG_SYNC) && 0
870 {
871 int ftype;
872 if (src_frame->pict_type == FF_B_TYPE)
873 ftype = 'B';
874 else if (src_frame->pict_type == FF_I_TYPE)
875 ftype = 'I';
876 else
877 ftype = 'P';
878 printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
879 ftype, pts, pts1);
880 }
881 #endif
882 return queue_picture(is, src_frame, pts);
883 }
884
885 static int video_thread(void *arg)
886 {
887 VideoState *is = arg;
888 AVPacket pkt1, *pkt = &pkt1;
889 int len1, got_picture;
890 AVFrame *frame= avcodec_alloc_frame();
891 double pts;
892
893 for(;;) {
894 while (is->paused && !is->videoq.abort_request) {
895 SDL_Delay(10);
896 }
897 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
898 break;
899 /* NOTE: ipts is the PTS of the _first_ picture beginning in
900 this packet, if any */
901 pts = 0;
902 if (pkt->dts != AV_NOPTS_VALUE)
903 pts = (double)pkt->dts / AV_TIME_BASE;
904
905 SDL_LockMutex(is->video_decoder_mutex);
906 len1 = avcodec_decode_video(&is->video_st->codec,
907 frame, &got_picture,
908 pkt->data, pkt->size);
909 SDL_UnlockMutex(is->video_decoder_mutex);
910 // if (len1 < 0)
911 // break;
912 if (got_picture) {
913 if (output_picture2(is, frame, pts) < 0)
914 goto the_end;
915 }
916 av_free_packet(pkt);
917 if (step)
918 if (cur_stream)
919 stream_pause(cur_stream);
920 }
921 the_end:
922 av_free(frame);
923 return 0;
924 }
925
926 /* copy samples for viewing in editor window */
927 static void update_sample_display(VideoState *is, short *samples, int samples_size)
928 {
929 int size, len, channels;
930
931 channels = is->audio_st->codec.channels;
932
933 size = samples_size / sizeof(short);
934 while (size > 0) {
935 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
936 if (len > size)
937 len = size;
938 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
939 samples += len;
940 is->sample_array_index += len;
941 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
942 is->sample_array_index = 0;
943 size -= len;
944 }
945 }
946
947 /* return the new audio buffer size (samples can be added or deleted
948 to get better sync if video or external master clock) */
949 static int synchronize_audio(VideoState *is, short *samples,
950 int samples_size1, double pts)
951 {
952 int n, samples_size;
953 double ref_clock;
954
955 n = 2 * is->audio_st->codec.channels;
956 samples_size = samples_size1;
957
958 /* if not master, then we try to remove or add samples to correct the clock */
959 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
960 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
961 double diff, avg_diff;
962 int wanted_size, min_size, max_size, nb_samples;
963
964 ref_clock = get_master_clock(is);
965 diff = get_audio_clock(is) - ref_clock;
966
967 if (diff < AV_NOSYNC_THRESHOLD) {
968 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
969 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
970 /* not enough measures to have a correct estimate */
971 is->audio_diff_avg_count++;
972 } else {
973 /* estimate the A-V difference */
974 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
975
976 if (fabs(avg_diff) >= is->audio_diff_threshold) {
977 wanted_size = samples_size + ((int)(diff * is->audio_st->codec.sample_rate) * n);
978 nb_samples = samples_size / n;
979
980 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
981 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
982 if (wanted_size < min_size)
983 wanted_size = min_size;
984 else if (wanted_size > max_size)
985 wanted_size = max_size;
986
987 /* add or remove samples to correction the synchro */
988 if (wanted_size < samples_size) {
989 /* remove samples */
990 samples_size = wanted_size;
991 } else if (wanted_size > samples_size) {
992 uint8_t *samples_end, *q;
993 int nb;
994
995 /* add samples */
996 nb = (samples_size - wanted_size);
997 samples_end = (uint8_t *)samples + samples_size - n;
998 q = samples_end + n;
999 while (nb > 0) {
1000 memcpy(q, samples_end, n);
1001 q += n;
1002 nb -= n;
1003 }
1004 samples_size = wanted_size;
1005 }
1006 }
1007 #if 0
1008 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1009 diff, avg_diff, samples_size - samples_size1,
1010 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1011 #endif
1012 }
1013 } else {
1014 /* too big difference : may be initial PTS errors, so
1015 reset A-V filter */
1016 is->audio_diff_avg_count = 0;
1017 is->audio_diff_cum = 0;
1018 }
1019 }
1020
1021 return samples_size;
1022 }
1023
1024 /* decode one audio frame and returns its uncompressed size */
1025 static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, double *pts_ptr)
1026 {
1027 AVPacket *pkt = &is->audio_pkt;
1028 int n, len1, data_size;
1029 double pts;
1030
1031 for(;;) {
1032 /* NOTE: the audio packet can contain several frames */
1033 while (is->audio_pkt_size > 0) {
1034 SDL_LockMutex(is->audio_decoder_mutex);
1035 len1 = avcodec_decode_audio(&is->audio_st->codec,
1036 (int16_t *)audio_buf, &data_size,
1037 is->audio_pkt_data, is->audio_pkt_size);
1038 SDL_UnlockMutex(is->audio_decoder_mutex);
1039 if (len1 < 0) {
1040 /* if error, we skip the frame */
1041 is->audio_pkt_size = 0;
1042 break;
1043 }
1044
1045 is->audio_pkt_data += len1;
1046 is->audio_pkt_size -= len1;
1047 if (data_size <= 0)
1048 continue;
1049 /* if no pts, then compute it */
1050 pts = is->audio_clock;
1051 *pts_ptr = pts;
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)
1056 {
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;
1062 }
1063 #endif
1064 return data_size;
1065 }
1066
1067 /* free the current packet */
1068 if (pkt->data)
1069 av_free_packet(pkt);
1070
1071 if (is->paused || is->audioq.abort_request) {
1072 return -1;
1073 }
1074
1075 /* read next packet */
1076 if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1077 return -1;
1078 is->audio_pkt_data = pkt->data;
1079 is->audio_pkt_size = pkt->size;
1080
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;
1084 }
1085 }
1086 }
1087
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)
1091 {
1092 return is->audio_hw_buf_size - is->audio_buf_index;
1093 }
1094
1095
1096 /* prepare a new audio buffer */
1097 void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1098 {
1099 VideoState *is = opaque;
1100 int audio_size, len1;
1101 double pts;
1102
1103 audio_callback_time = av_gettime();
1104
1105 while (len > 0) {
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);
1112 } else {
1113 if (is->show_audio)
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,
1116 pts);
1117 is->audio_buf_size = audio_size;
1118 }
1119 is->audio_buf_index = 0;
1120 }
1121 len1 = is->audio_buf_size - is->audio_buf_index;
1122 if (len1 > len)
1123 len1 = len;
1124 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1125 len -= len1;
1126 stream += len1;
1127 is->audio_buf_index += len1;
1128 }
1129 }
1130
1131
1132 /* open a given stream. Return 0 if OK */
1133 static int stream_component_open(VideoState *is, int stream_index)
1134 {
1135 AVFormatContext *ic = is->ic;
1136 AVCodecContext *enc;
1137 AVCodec *codec;
1138 SDL_AudioSpec wanted_spec, spec;
1139
1140 if (stream_index < 0 || stream_index >= ic->nb_streams)
1141 return -1;
1142 enc = &ic->streams[stream_index]->codec;
1143
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)
1150 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());
1158 return -1;
1159 }
1160 is->audio_hw_buf_size = spec.size;
1161 }
1162
1163 codec = avcodec_find_decoder(enc->codec_id);
1164 enc->debug_mv = debug_mv;
1165 enc->debug = debug;
1166 enc->workaround_bugs = workaround_bugs;
1167 enc->lowres = lowres;
1168 if(lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
1169 enc->idct_algo= idct;
1170 if(fast) enc->flags2 |= CODEC_FLAG2_FAST;
1171 if (!codec ||
1172 avcodec_open(enc, codec) < 0)
1173 return -1;
1174 #if defined(HAVE_THREADS)
1175 if(thread_count>1)
1176 avcodec_thread_init(enc, thread_count);
1177 #endif
1178 enc->thread_count= thread_count;
1179 switch(enc->codec_type) {
1180 case CODEC_TYPE_AUDIO:
1181 is->audio_stream = stream_index;
1182 is->audio_st = ic->streams[stream_index];
1183 is->audio_buf_size = 0;
1184 is->audio_buf_index = 0;
1185
1186 /* init averaging filter */
1187 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1188 is->audio_diff_avg_count = 0;
1189 /* since we do not have a precise anough audio fifo fullness,
1190 we correct audio sync only if larger than this threshold */
1191 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1192
1193 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1194 packet_queue_init(&is->audioq);
1195 SDL_PauseAudio(0);
1196 break;
1197 case CODEC_TYPE_VIDEO:
1198 is->video_stream = stream_index;
1199 is->video_st = ic->streams[stream_index];
1200
1201 is->frame_last_delay = 40e-3;
1202 is->frame_timer = (double)av_gettime() / 1000000.0;
1203 is->video_current_pts_time = av_gettime();
1204
1205 packet_queue_init(&is->videoq);
1206 is->video_tid = SDL_CreateThread(video_thread, is);
1207 break;
1208 default:
1209 break;
1210 }
1211 return 0;
1212 }
1213
1214 static void stream_component_close(VideoState *is, int stream_index)
1215 {
1216 AVFormatContext *ic = is->ic;
1217 AVCodecContext *enc;
1218
1219 enc = &ic->streams[stream_index]->codec;
1220
1221 switch(enc->codec_type) {
1222 case CODEC_TYPE_AUDIO:
1223 packet_queue_abort(&is->audioq);
1224
1225 SDL_CloseAudio();
1226
1227 packet_queue_end(&is->audioq);
1228 break;
1229 case CODEC_TYPE_VIDEO:
1230 packet_queue_abort(&is->videoq);
1231
1232 /* note: we also signal this mutex to make sure we deblock the
1233 video thread in all cases */
1234 SDL_LockMutex(is->pictq_mutex);
1235 SDL_CondSignal(is->pictq_cond);
1236 SDL_UnlockMutex(is->pictq_mutex);
1237
1238 SDL_WaitThread(is->video_tid, NULL);
1239
1240 packet_queue_end(&is->videoq);
1241 break;
1242 default:
1243 break;
1244 }
1245
1246 avcodec_close(enc);
1247 switch(enc->codec_type) {
1248 case CODEC_TYPE_AUDIO:
1249 is->audio_st = NULL;
1250 is->audio_stream = -1;
1251 break;
1252 case CODEC_TYPE_VIDEO:
1253 is->video_st = NULL;
1254 is->video_stream = -1;
1255 break;
1256 default:
1257 break;
1258 }
1259 }
1260
1261 void dump_stream_info(AVFormatContext *s)
1262 {
1263 if (s->track != 0)
1264 fprintf(stderr, "Track: %d\n", s->track);
1265 if (s->title[0] != '\0')
1266 fprintf(stderr, "Title: %s\n", s->title);
1267 if (s->author[0] != '\0')
1268 fprintf(stderr, "Author: %s\n", s->author);
1269 if (s->album[0] != '\0')
1270 fprintf(stderr, "Album: %s\n", s->album);
1271 if (s->year != 0)
1272 fprintf(stderr, "Year: %d\n", s->year);
1273 if (s->genre[0] != '\0')
1274 fprintf(stderr, "Genre: %s\n", s->genre);
1275 }
1276
1277 /* since we have only one decoding thread, we can use a global
1278 variable instead of a thread local variable */
1279 static VideoState *global_video_state;
1280
1281 static int decode_interrupt_cb(void)
1282 {
1283 return (global_video_state && global_video_state->abort_request);
1284 }
1285
1286 /* this thread gets the stream from the disk or the network */
1287 static int decode_thread(void *arg)
1288 {
1289 VideoState *is = arg;
1290 AVFormatContext *ic;
1291 int err, i, ret, video_index, audio_index, use_play;
1292 AVPacket pkt1, *pkt = &pkt1;
1293 AVFormatParameters params, *ap = &params;
1294
1295 video_index = -1;
1296 audio_index = -1;
1297 is->video_stream = -1;
1298 is->audio_stream = -1;
1299
1300 global_video_state = is;
1301 url_set_interrupt_cb(decode_interrupt_cb);
1302
1303 memset(ap, 0, sizeof(*ap));
1304 ap->image_format = image_format;
1305 ap->initial_pause = 1; /* we force a pause when starting an RTSP
1306 stream */
1307
1308 err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1309 if (err < 0) {
1310 print_error(is->filename, err);
1311 ret = -1;
1312 goto fail;
1313 }
1314 is->ic = ic;
1315 #ifdef CONFIG_NETWORK
1316 use_play = (ic->iformat == &rtsp_demux);
1317 #else
1318 use_play = 0;
1319 #endif
1320 if (!use_play) {
1321 err = av_find_stream_info(ic);
1322 if (err < 0) {
1323 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1324 ret = -1;
1325 goto fail;
1326 }
1327 ic->pb.eof_reached= 0; //FIXME hack, ffplay maybe shouldnt use url_feof() to test for the end
1328 }
1329
1330 /* if seeking requested, we execute it */
1331 if (start_time != AV_NOPTS_VALUE) {
1332 int64_t timestamp;
1333
1334 timestamp = start_time;
1335 /* add the stream start time */
1336 if (ic->start_time != AV_NOPTS_VALUE)
1337 timestamp += ic->start_time;
1338 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
1339 if (ret < 0) {
1340 fprintf(stderr, "%s: could not seek to position %0.3f\n",
1341 is->filename, (double)timestamp / AV_TIME_BASE);
1342 }
1343 }
1344
1345 /* now we can begin to play (RTSP stream only) */
1346 av_read_play(ic);
1347
1348 if (use_play) {
1349 err = av_find_stream_info(ic);
1350 if (err < 0) {
1351 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1352 ret = -1;
1353 goto fail;
1354 }
1355 }
1356
1357 for(i = 0; i < ic->nb_streams; i++) {
1358 AVCodecContext *enc = &ic->streams[i]->codec;
1359 switch(enc->codec_type) {
1360 case CODEC_TYPE_AUDIO:
1361 if (audio_index < 0 && !audio_disable)
1362 audio_index = i;
1363 break;
1364 case CODEC_TYPE_VIDEO:
1365 if (video_index < 0 && !video_disable)
1366 video_index = i;
1367 break;
1368 default:
1369 break;
1370 }
1371 }
1372 if (show_status) {
1373 dump_format(ic, 0, is->filename, 0);
1374 dump_stream_info(ic);
1375 }
1376
1377 /* open the streams */
1378 if (audio_index >= 0) {
1379 stream_component_open(is, audio_index);
1380 }
1381
1382 if (video_index >= 0) {
1383 stream_component_open(is, video_index);
1384 } else {
1385 if (!display_disable)
1386 is->show_audio = 1;
1387 }
1388
1389 if (is->video_stream < 0 && is->audio_stream < 0) {
1390 fprintf(stderr, "%s: could not open codecs\n", is->filename);
1391 ret = -1;
1392 goto fail;
1393 }
1394
1395 for(;;) {
1396 if (is->abort_request)
1397 break;
1398 #ifdef CONFIG_NETWORK
1399 if (is->paused != is->last_paused) {
1400 is->last_paused = is->paused;
1401 if (is->paused)
1402 av_read_pause(ic);
1403 else
1404 av_read_play(ic);
1405 }
1406 if (is->paused && ic->iformat == &rtsp_demux) {
1407 /* wait 10 ms to avoid trying to get another packet */
1408 /* XXX: horrible */
1409 SDL_Delay(10);
1410 continue;
1411 }
1412 #endif
1413 if (is->seek_req) {
1414 /* XXX: must lock decoder threads */
1415 ret = av_seek_frame(is->ic, -1, is->seek_pos, is->seek_flags);
1416 if (ret < 0) {
1417 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
1418 }else{
1419 if (is->audio_stream >= 0) {
1420 packet_queue_flush(&is->audioq);
1421 }
1422 if (is->video_stream >= 0) {
1423 packet_queue_flush(&is->videoq);
1424 SDL_LockMutex(is->video_decoder_mutex);
1425 avcodec_flush_buffers(&ic->streams[video_index]->codec);
1426 SDL_UnlockMutex(is->video_decoder_mutex);
1427 }
1428 }
1429 is->seek_req = 0;
1430 }
1431
1432 /* if the queue are full, no need to read more */
1433 if (is->audioq.size > MAX_AUDIOQ_SIZE ||
1434 is->videoq.size > MAX_VIDEOQ_SIZE ||
1435 url_feof(&ic->pb)) {
1436 /* wait 10 ms */
1437 SDL_Delay(10);
1438 continue;
1439 }
1440 ret = av_read_frame(ic, pkt);
1441 if (ret < 0) {
1442 if (url_feof(&ic->pb) && url_ferror(&ic->pb) == 0) {
1443 SDL_Delay(100); /* wait for user event */
1444 continue;
1445 } else
1446 break;
1447 }
1448 if (pkt->stream_index == is->audio_stream) {
1449 packet_queue_put(&is->audioq, pkt);
1450 } else if (pkt->stream_index == is->video_stream) {
1451 packet_queue_put(&is->videoq, pkt);
1452 } else {
1453 av_free_packet(pkt);
1454 }
1455 }
1456 /* wait until the end */
1457 while (!is->abort_request) {
1458 SDL_Delay(100);
1459 }
1460
1461 ret = 0;
1462 fail:
1463 /* disable interrupting */
1464 global_video_state = NULL;
1465
1466 /* close each stream */
1467 if (is->audio_stream >= 0)
1468 stream_component_close(is, is->audio_stream);
1469 if (is->video_stream >= 0)
1470 stream_component_close(is, is->video_stream);
1471 if (is->ic) {
1472 av_close_input_file(is->ic);
1473 is->ic = NULL; /* safety */
1474 }
1475 url_set_interrupt_cb(NULL);
1476
1477 if (ret != 0) {
1478 SDL_Event event;
1479
1480 event.type = FF_QUIT_EVENT;
1481 event.user.data1 = is;
1482 SDL_PushEvent(&event);
1483 }
1484 return 0;
1485 }
1486
1487 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
1488 {
1489 VideoState *is;
1490
1491 is = av_mallocz(sizeof(VideoState));
1492 if (!is)
1493 return NULL;
1494 pstrcpy(is->filename, sizeof(is->filename), filename);
1495 is->iformat = iformat;
1496 if (screen) {
1497 is->width = screen->w;
1498 is->height = screen->h;
1499 }
1500 is->ytop = 0;
1501 is->xleft = 0;
1502
1503 /* start video display */
1504 is->pictq_mutex = SDL_CreateMutex();
1505 is->pictq_cond = SDL_CreateCond();
1506
1507 is->audio_decoder_mutex = SDL_CreateMutex();
1508 is->video_decoder_mutex = SDL_CreateMutex();
1509
1510 /* add the refresh timer to draw the picture */
1511 schedule_refresh(is, 40);
1512
1513 is->av_sync_type = av_sync_type;
1514 is->parse_tid = SDL_CreateThread(decode_thread, is);
1515 if (!is->parse_tid) {
1516 av_free(is);
1517 return NULL;
1518 }
1519 return is;
1520 }
1521
1522 static void stream_close(VideoState *is)
1523 {
1524 VideoPicture *vp;
1525 int i;
1526 /* XXX: use a special url_shutdown call to abort parse cleanly */
1527 is->abort_request = 1;
1528 SDL_WaitThread(is->parse_tid, NULL);
1529
1530 /* free all pictures */
1531 for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
1532 vp = &is->pictq[i];
1533 if (vp->bmp) {
1534 SDL_FreeYUVOverlay(vp->bmp);
1535 vp->bmp = NULL;
1536 }
1537 }
1538 SDL_DestroyMutex(is->pictq_mutex);
1539 SDL_DestroyCond(is->pictq_cond);
1540 SDL_DestroyMutex(is->audio_decoder_mutex);
1541 SDL_DestroyMutex(is->video_decoder_mutex);
1542 }
1543
1544 void stream_cycle_channel(VideoState *is, int codec_type)
1545 {
1546 AVFormatContext *ic = is->ic;
1547 int start_index, stream_index;
1548 AVStream *st;
1549
1550 if (codec_type == CODEC_TYPE_VIDEO)
1551 start_index = is->video_stream;
1552 else
1553 start_index = is->audio_stream;
1554 if (start_index < 0)
1555 return;
1556 stream_index = start_index;
1557 for(;;) {
1558 if (++stream_index >= is->ic->nb_streams)
1559 stream_index = 0;
1560 if (stream_index == start_index)
1561 return;
1562 st = ic->streams[stream_index];
1563 if (st->codec.codec_type == codec_type) {
1564 /* check that parameters are OK */
1565 switch(codec_type) {
1566 case CODEC_TYPE_AUDIO:
1567 if (st->codec.sample_rate != 0 &&
1568 st->codec.channels != 0)
1569 goto the_end;
1570 break;
1571 case CODEC_TYPE_VIDEO:
1572 goto the_end;
1573 default:
1574 break;
1575 }
1576 }
1577 }
1578 the_end:
1579 stream_component_close(is, start_index);
1580 stream_component_open(is, stream_index);
1581 }
1582
1583
1584 void toggle_full_screen(void)
1585 {
1586 int w, h, flags;
1587 is_full_screen = !is_full_screen;
1588 if (!fs_screen_width) {
1589 /* use default SDL method */
1590 SDL_WM_ToggleFullScreen(screen);
1591 } else {
1592 /* use the recorded resolution */
1593 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1594 if (is_full_screen) {
1595 w = fs_screen_width;
1596 h = fs_screen_height;
1597 flags |= SDL_FULLSCREEN;
1598 } else {
1599 w = screen_width;
1600 h = screen_height;
1601 flags |= SDL_RESIZABLE;
1602 }
1603 screen = SDL_SetVideoMode(w, h, 0, flags);
1604 cur_stream->width = w;
1605 cur_stream->height = h;
1606 }
1607 }
1608
1609 void toggle_pause(void)
1610 {
1611 if (cur_stream)
1612 stream_pause(cur_stream);
1613 step = 0;
1614 }
1615
1616 void step_to_next_frame(void)
1617 {
1618 if (cur_stream) {
1619 if (cur_stream->paused)
1620 cur_stream->paused=0;
1621 cur_stream->video_current_pts = get_video_clock(cur_stream);
1622 }
1623 step = 1;
1624 }
1625
1626 void do_exit(void)
1627 {
1628 if (cur_stream) {
1629 stream_close(cur_stream);
1630 cur_stream = NULL;
1631 }
1632 if (show_status)
1633 printf("\n");
1634 SDL_Quit();
1635 exit(0);
1636 }
1637
1638 void toggle_audio_display(void)
1639 {
1640 if (cur_stream) {
1641 cur_stream->show_audio = !cur_stream->show_audio;
1642 }
1643 }
1644
1645 /* handle an event sent by the GUI */
1646 void event_loop(void)
1647 {
1648 SDL_Event event;
1649 double incr, pos, frac;
1650
1651 for(;;) {
1652 SDL_WaitEvent(&event);
1653 switch(event.type) {
1654 case SDL_KEYDOWN:
1655 switch(event.key.keysym.sym) {
1656 case SDLK_ESCAPE:
1657 case SDLK_q:
1658 do_exit();
1659 break;
1660 case SDLK_f:
1661 toggle_full_screen();
1662 break;
1663 case SDLK_p:
1664 case SDLK_SPACE:
1665 toggle_pause();
1666 break;
1667 case SDLK_s: //S: Step to next frame
1668 step_to_next_frame();
1669 break;
1670 case SDLK_a:
1671 if (cur_stream)
1672 stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
1673 break;
1674 case SDLK_v:
1675 if (cur_stream)
1676 stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
1677 break;
1678 case SDLK_w:
1679 toggle_audio_display();
1680 break;
1681 case SDLK_LEFT:
1682 incr = -10.0;
1683 goto do_seek;
1684 case SDLK_RIGHT:
1685 incr = 10.0;
1686 goto do_seek;
1687 case SDLK_UP:
1688 incr = 60.0;
1689 goto do_seek;
1690 case SDLK_DOWN:
1691 incr = -60.0;
1692 do_seek:
1693 if (cur_stream) {
1694 pos = get_master_clock(cur_stream);
1695 pos += incr;
1696 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), incr);
1697 }
1698 break;
1699 default:
1700 break;
1701 }
1702 break;
1703 case SDL_MOUSEBUTTONDOWN:
1704 if (cur_stream) {
1705 int ns, hh, mm, ss;
1706 int tns, thh, tmm, tss;
1707 tns = cur_stream->ic->duration/1000000LL;
1708 thh = tns/3600;
1709 tmm = (tns%3600)/60;
1710 tss = (tns%60);
1711 frac = (double)event.button.x/(double)cur_stream->width;
1712 ns = frac*tns;
1713 hh = ns/3600;
1714 mm = (ns%3600)/60;
1715 ss = (ns%60);
1716 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
1717 hh, mm, ss, thh, tmm, tss);
1718 stream_seek(cur_stream, (int64_t)(cur_stream->ic->start_time+frac*cur_stream->ic->duration), 0);
1719 }
1720 break;
1721 case SDL_VIDEORESIZE:
1722 if (cur_stream) {
1723 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
1724 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
1725 cur_stream->width = event.resize.w;
1726 cur_stream->height = event.resize.h;
1727 }
1728 break;
1729 case SDL_QUIT:
1730 case FF_QUIT_EVENT:
1731 do_exit();
1732 break;
1733 case FF_ALLOC_EVENT:
1734 alloc_picture(event.user.data1);
1735 break;
1736 case FF_REFRESH_EVENT:
1737 video_refresh_timer(event.user.data1);
1738 break;
1739 default:
1740 break;
1741 }
1742 }
1743 }
1744
1745 void opt_width(const char *arg)
1746 {
1747 screen_width = atoi(arg);
1748 }
1749
1750 void opt_height(const char *arg)
1751 {
1752 screen_height = atoi(arg);
1753 }
1754
1755 static void opt_format(const char *arg)
1756 {
1757 file_iformat = av_find_input_format(arg);
1758 if (!file_iformat) {
1759 fprintf(stderr, "Unknown input format: %s\n", arg);
1760 exit(1);
1761 }
1762 }
1763
1764 static void opt_image_format(const char *arg)
1765 {
1766 AVImageFormat *f;
1767
1768 for(f = first_image_format; f != NULL; f = f->next) {
1769 if (!strcmp(arg, f->name))
1770 break;
1771 }
1772 if (!f) {
1773 fprintf(stderr, "Unknown image format: '%s'\n", arg);
1774 exit(1);
1775 }
1776 image_format = f;
1777 }
1778
1779 #ifdef CONFIG_NETWORK
1780 void opt_rtp_tcp(void)
1781 {
1782 /* only tcp protocol */
1783 rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
1784 }
1785 #endif
1786
1787 void opt_sync(const char *arg)
1788 {
1789 if (!strcmp(arg, "audio"))
1790 av_sync_type = AV_SYNC_AUDIO_MASTER;
1791 else if (!strcmp(arg, "video"))
1792 av_sync_type = AV_SYNC_VIDEO_MASTER;
1793 else if (!strcmp(arg, "ext"))
1794 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
1795 else
1796 show_help();
1797 }
1798
1799 void opt_seek(const char *arg)
1800 {
1801 start_time = parse_date(arg, 1);
1802 }
1803
1804 static void opt_debug(const char *arg)
1805 {
1806 debug = atoi(arg);
1807 }
1808
1809 static void opt_vismv(const char *arg)
1810 {
1811 debug_mv = atoi(arg);
1812 }
1813
1814 static void opt_thread_count(const char *arg)
1815 {
1816 thread_count= atoi(arg);
1817 #if !defined(HAVE_THREADS)
1818 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
1819 #endif
1820 }
1821
1822 const OptionDef options[] = {
1823 { "h", 0, {(void*)show_help}, "show help" },
1824 { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
1825 { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
1826 #if 0
1827 /* disabled as SDL/X11 does not support it correctly on application launch */
1828 { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
1829 #endif
1830 { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
1831 { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
1832 { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
1833 { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
1834 { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
1835 { "img", HAS_ARG, {(void*)opt_image_format}, "force image format", "img_fmt" },
1836 { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
1837 { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
1838 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
1839 { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
1840 { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
1841 { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
1842 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo", "algo" },
1843 #ifdef CONFIG_NETWORK
1844 { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
1845 #endif
1846 { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
1847 { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
1848 { NULL, },
1849 };
1850
1851 void show_help(void)
1852 {
1853 printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
1854 "usage: ffplay [options] input_file\n"
1855 "Simple media player\n");
1856 printf("\n");
1857 show_help_options(options, "Main options:\n",
1858 OPT_EXPERT, 0);
1859 show_help_options(options, "\nAdvanced options:\n",
1860 OPT_EXPERT, OPT_EXPERT);
1861 printf("\nWhile playing:\n"
1862 "q, ESC quit\n"
1863 "f toggle full screen\n"
1864 "p, SPC pause\n"
1865 "a cycle audio channel\n"
1866 "v cycle video channel\n"
1867 "w show audio waves\n"
1868 "left/right seek backward/forward 10 seconds\n"
1869 "down/up seek backward/forward 1 minute\n"
1870 "mouse click seek to percentage in file corresponding to fraction of width\n"
1871 );
1872 exit(1);
1873 }
1874
1875 void parse_arg_file(const char *filename)
1876 {
1877 if (!strcmp(filename, "-"))
1878 filename = "pipe:";
1879 input_filename = filename;
1880 }
1881
1882 /* Called from the main */
1883 int main(int argc, char **argv)
1884 {
1885 int flags, w, h;
1886
1887 /* register all codecs, demux and protocols */
1888 av_register_all();
1889
1890 parse_options(argc, argv, options);
1891
1892 if (!input_filename)
1893 show_help();
1894
1895 if (display_disable) {
1896 video_disable = 1;
1897 }
1898 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
1899 #ifndef CONFIG_WIN32
1900 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 */
1901 #endif
1902 if (SDL_Init (flags)) {
1903 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
1904 exit(1);
1905 }
1906
1907 if (!display_disable) {
1908 #ifdef HAVE_X11
1909 /* save the screen resolution... SDL should allow full screen
1910 by resizing the window */
1911 {
1912 Display *dpy;
1913 dpy = XOpenDisplay(NULL);
1914 if (dpy) {
1915 fs_screen_width = DisplayWidth(dpy, DefaultScreen(dpy));
1916 fs_screen_height = DisplayHeight(dpy, DefaultScreen(dpy));
1917 XCloseDisplay(dpy);
1918 }
1919 }
1920 #endif
1921 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1922 if (is_full_screen && fs_screen_width) {
1923 w = fs_screen_width;
1924 h = fs_screen_height;
1925 flags |= SDL_FULLSCREEN;
1926 } else {
1927 w = screen_width;
1928 h = screen_height;
1929 flags |= SDL_RESIZABLE;
1930 }
1931 screen = SDL_SetVideoMode(w, h, 0, flags);
1932 if (!screen) {
1933 fprintf(stderr, "SDL: could not set video mode - exiting\n");
1934 exit(1);
1935 }
1936 SDL_WM_SetCaption("FFplay", "FFplay");
1937 }
1938
1939 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
1940 SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
1941 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
1942 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
1943
1944 cur_stream = stream_open(input_filename, file_iformat);
1945
1946 event_loop();
1947
1948 /* never returns */
1949
1950 return 0;
1951 }