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credits for Michel Bardiaux
[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 // QETimer *video_timer;
148 char filename[1024];
149 int width, height, xleft, ytop;
150 } VideoState;
151
152 void show_help(void);
153 static int audio_write_get_buf_size(VideoState *is);
154
155 /* options specified by the user */
156 static AVInputFormat *file_iformat;
157 static AVImageFormat *image_format;
158 static const char *input_filename;
159 static int fs_screen_width;
160 static int fs_screen_height;
161 static int screen_width = 640;
162 static int screen_height = 480;
163 static int audio_disable;
164 static int video_disable;
165 static int display_disable;
166 static int show_status;
167 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
168 static int64_t start_time = AV_NOPTS_VALUE;
169 static int debug = 0;
170 static int debug_mv = 0;
171 static int step = 0;
172 static int thread_count = 1;
173 static int workaround_bugs = 1;
174 static int fast = 0;
175 static int lowres = 0;
176 static int idct = FF_IDCT_AUTO;
177
178 /* current context */
179 static int is_full_screen;
180 static VideoState *cur_stream;
181 static int64_t audio_callback_time;
182
183 #define FF_ALLOC_EVENT (SDL_USEREVENT)
184 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
185 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
186
187 SDL_Surface *screen;
188
189 /* packet queue handling */
190 static void packet_queue_init(PacketQueue *q)
191 {
192 memset(q, 0, sizeof(PacketQueue));
193 q->mutex = SDL_CreateMutex();
194 q->cond = SDL_CreateCond();
195 }
196
197 static void packet_queue_flush(PacketQueue *q)
198 {
199 AVPacketList *pkt, *pkt1;
200
201 for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
202 pkt1 = pkt->next;
203 av_free_packet(&pkt->pkt);
204 av_freep(&pkt);
205 }
206 q->last_pkt = NULL;
207 q->first_pkt = NULL;
208 q->nb_packets = 0;
209 q->size = 0;
210 }
211
212 static void packet_queue_end(PacketQueue *q)
213 {
214 packet_queue_flush(q);
215 SDL_DestroyMutex(q->mutex);
216 SDL_DestroyCond(q->cond);
217 }
218
219 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
220 {
221 AVPacketList *pkt1;
222
223 /* duplicate the packet */
224 if (av_dup_packet(pkt) < 0)
225 return -1;
226
227 pkt1 = av_malloc(sizeof(AVPacketList));
228 if (!pkt1)
229 return -1;
230 pkt1->pkt = *pkt;
231 pkt1->next = NULL;
232
233
234 SDL_LockMutex(q->mutex);
235
236 if (!q->last_pkt)
237
238 q->first_pkt = pkt1;
239 else
240 q->last_pkt->next = pkt1;
241 q->last_pkt = pkt1;
242 q->nb_packets++;
243 q->size += pkt1->pkt.size;
244 /* XXX: should duplicate packet data in DV case */
245 SDL_CondSignal(q->cond);
246
247 SDL_UnlockMutex(q->mutex);
248 return 0;
249 }
250
251 static void packet_queue_abort(PacketQueue *q)
252 {
253 SDL_LockMutex(q->mutex);
254
255 q->abort_request = 1;
256
257 SDL_CondSignal(q->cond);
258
259 SDL_UnlockMutex(q->mutex);
260 }
261
262 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
263 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
264 {
265 AVPacketList *pkt1;
266 int ret;
267
268 SDL_LockMutex(q->mutex);
269
270 for(;;) {
271 if (q->abort_request) {
272 ret = -1;
273 break;
274 }
275
276 pkt1 = q->first_pkt;
277 if (pkt1) {
278 q->first_pkt = pkt1->next;
279 if (!q->first_pkt)
280 q->last_pkt = NULL;
281 q->nb_packets--;
282 q->size -= pkt1->pkt.size;
283 *pkt = pkt1->pkt;
284 av_free(pkt1);
285 ret = 1;
286 break;
287 } else if (!block) {
288 ret = 0;
289 break;
290 } else {
291 SDL_CondWait(q->cond, q->mutex);
292 }
293 }
294 SDL_UnlockMutex(q->mutex);
295 return ret;
296 }
297
298 static inline void fill_rectangle(SDL_Surface *screen,
299 int x, int y, int w, int h, int color)
300 {
301 SDL_Rect rect;
302 rect.x = x;
303 rect.y = y;
304 rect.w = w;
305 rect.h = h;
306 SDL_FillRect(screen, &rect, color);
307 }
308
309 #if 0
310 /* draw only the border of a rectangle */
311 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
312 {
313 int w1, w2, h1, h2;
314
315 /* fill the background */
316 w1 = x;
317 if (w1 < 0)
318 w1 = 0;
319 w2 = s->width - (x + w);
320 if (w2 < 0)
321 w2 = 0;
322 h1 = y;
323 if (h1 < 0)
324 h1 = 0;
325 h2 = s->height - (y + h);
326 if (h2 < 0)
327 h2 = 0;
328 fill_rectangle(screen,
329 s->xleft, s->ytop,
330 w1, s->height,
331 color);
332 fill_rectangle(screen,
333 s->xleft + s->width - w2, s->ytop,
334 w2, s->height,
335 color);
336 fill_rectangle(screen,
337 s->xleft + w1, s->ytop,
338 s->width - w1 - w2, h1,
339 color);
340 fill_rectangle(screen,
341 s->xleft + w1, s->ytop + s->height - h2,
342 s->width - w1 - w2, h2,
343 color);
344 }
345 #endif
346
347 static void video_image_display(VideoState *is)
348 {
349 VideoPicture *vp;
350 float aspect_ratio;
351 int width, height, x, y;
352 SDL_Rect rect;
353
354 vp = &is->pictq[is->pictq_rindex];
355 if (vp->bmp) {
356 /* XXX: use variable in the frame */
357 if (is->video_st->codec.sample_aspect_ratio.num == 0)
358 aspect_ratio = 0;
359 else
360 aspect_ratio = av_q2d(is->video_st->codec.sample_aspect_ratio)
361 * is->video_st->codec.width / is->video_st->codec.height;;
362 if (aspect_ratio <= 0.0)
363 aspect_ratio = (float)is->video_st->codec.width /
364 (float)is->video_st->codec.height;
365 /* if an active format is indicated, then it overrides the
366 mpeg format */
367 #if 0
368 if (is->video_st->codec.dtg_active_format != is->dtg_active_format) {
369 is->dtg_active_format = is->video_st->codec.dtg_active_format;
370 printf("dtg_active_format=%d\n", is->dtg_active_format);
371 }
372 #endif
373 #if 0
374 switch(is->video_st->codec.dtg_active_format) {
375 case FF_DTG_AFD_SAME:
376 default:
377 /* nothing to do */
378 break;
379 case FF_DTG_AFD_4_3:
380 aspect_ratio = 4.0 / 3.0;
381 break;
382 case FF_DTG_AFD_16_9:
383 aspect_ratio = 16.0 / 9.0;
384 break;
385 case FF_DTG_AFD_14_9:
386 aspect_ratio = 14.0 / 9.0;
387 break;
388 case FF_DTG_AFD_4_3_SP_14_9:
389 aspect_ratio = 14.0 / 9.0;
390 break;
391 case FF_DTG_AFD_16_9_SP_14_9:
392 aspect_ratio = 14.0 / 9.0;
393 break;
394 case FF_DTG_AFD_SP_4_3:
395 aspect_ratio = 4.0 / 3.0;
396 break;
397 }
398 #endif
399
400 /* XXX: we suppose the screen has a 1.0 pixel ratio */
401 height = is->height;
402 width = ((int)rint(height * aspect_ratio)) & -3;
403 if (width > is->width) {
404 width = is->width;
405 height = ((int)rint(width / aspect_ratio)) & -3;
406 }
407 x = (is->width - width) / 2;
408 y = (is->height - height) / 2;
409 if (!is->no_background) {
410 /* fill the background */
411 // fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
412 } else {
413 is->no_background = 0;
414 }
415 rect.x = is->xleft + x;
416 rect.y = is->xleft + y;
417 rect.w = width;
418 rect.h = height;
419 SDL_DisplayYUVOverlay(vp->bmp, &rect);
420 } else {
421 #if 0
422 fill_rectangle(screen,
423 is->xleft, is->ytop, is->width, is->height,
424 QERGB(0x00, 0x00, 0x00));
425 #endif
426 }
427 }
428
429 static inline int compute_mod(int a, int b)
430 {
431 a = a % b;
432 if (a >= 0)
433 return a;
434 else
435 return a + b;
436 }
437
438 static void video_audio_display(VideoState *s)
439 {
440 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
441 int ch, channels, h, h2, bgcolor, fgcolor;
442 int16_t time_diff;
443
444 /* compute display index : center on currently output samples */
445 channels = s->audio_st->codec.channels;
446 nb_display_channels = channels;
447 if (!s->paused) {
448 n = 2 * channels;
449 delay = audio_write_get_buf_size(s);
450 delay /= n;
451
452 /* to be more precise, we take into account the time spent since
453 the last buffer computation */
454 if (audio_callback_time) {
455 time_diff = av_gettime() - audio_callback_time;
456 delay += (time_diff * s->audio_st->codec.sample_rate) / 1000000;
457 }
458
459 delay -= s->width / 2;
460 if (delay < s->width)
461 delay = s->width;
462 i_start = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
463 s->last_i_start = i_start;
464 } else {
465 i_start = s->last_i_start;
466 }
467
468 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
469 fill_rectangle(screen,
470 s->xleft, s->ytop, s->width, s->height,
471 bgcolor);
472
473 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
474
475 /* total height for one channel */
476 h = s->height / nb_display_channels;
477 /* graph height / 2 */
478 h2 = (h * 9) / 20;
479 for(ch = 0;ch < nb_display_channels; ch++) {
480 i = i_start + ch;
481 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
482 for(x = 0; x < s->width; x++) {
483 y = (s->sample_array[i] * h2) >> 15;
484 if (y < 0) {
485 y = -y;
486 ys = y1 - y;
487 } else {
488 ys = y1;
489 }
490 fill_rectangle(screen,
491 s->xleft + x, ys, 1, y,
492 fgcolor);
493 i += channels;
494 if (i >= SAMPLE_ARRAY_SIZE)
495 i -= SAMPLE_ARRAY_SIZE;
496 }
497 }
498
499 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
500
501 for(ch = 1;ch < nb_display_channels; ch++) {
502 y = s->ytop + ch * h;
503 fill_rectangle(screen,
504 s->xleft, y, s->width, 1,
505 fgcolor);
506 }
507 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
508 }
509
510 /* display the current picture, if any */
511 static void video_display(VideoState *is)
512 {
513 if (is->audio_st && is->show_audio)
514 video_audio_display(is);
515 else if (is->video_st)
516 video_image_display(is);
517 }
518
519 static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
520 {
521 SDL_Event event;
522 event.type = FF_REFRESH_EVENT;
523 event.user.data1 = opaque;
524 SDL_PushEvent(&event);
525 return 0; /* 0 means stop timer */
526 }
527
528 /* schedule a video refresh in 'delay' ms */
529 static void schedule_refresh(VideoState *is, int delay)
530 {
531 SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
532 }
533
534 /* get the current audio clock value */
535 static double get_audio_clock(VideoState *is)
536 {
537 double pts;
538 int hw_buf_size, bytes_per_sec;
539 pts = is->audio_clock;
540 hw_buf_size = audio_write_get_buf_size(is);
541 bytes_per_sec = 0;
542 if (is->audio_st) {
543 bytes_per_sec = is->audio_st->codec.sample_rate *
544 2 * is->audio_st->codec.channels;
545 }
546 if (bytes_per_sec)
547 pts -= (double)hw_buf_size / bytes_per_sec;
548 return pts;
549 }
550
551 /* get the current video clock value */
552 static double get_video_clock(VideoState *is)
553 {
554 double delta;
555 if (is->paused) {
556 delta = 0;
557 } else {
558 delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
559 }
560 return is->video_current_pts + delta;
561 }
562
563 /* get the current external clock value */
564 static double get_external_clock(VideoState *is)
565 {
566 int64_t ti;
567 ti = av_gettime();
568 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
569 }
570
571 /* get the current master clock value */
572 static double get_master_clock(VideoState *is)
573 {
574 double val;
575
576 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
577 if (is->video_st)
578 val = get_video_clock(is);
579 else
580 val = get_audio_clock(is);
581 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
582 if (is->audio_st)
583 val = get_audio_clock(is);
584 else
585 val = get_video_clock(is);
586 } else {
587 val = get_external_clock(is);
588 }
589 return val;
590 }
591
592 /* seek in the stream */
593 static void stream_seek(VideoState *is, int64_t pos, int rel)
594 {
595 is->seek_pos = pos;
596 is->seek_req = 1;
597 is->seek_flags = rel < 0 ? AVSEEK_FLAG_BACKWARD : 0;
598 }
599
600 /* pause or resume the video */
601 static void stream_pause(VideoState *is)
602 {
603 is->paused = !is->paused;
604 if (is->paused) {
605 is->video_current_pts = get_video_clock(is);
606 }
607 }
608
609 /* called to display each frame */
610 static void video_refresh_timer(void *opaque)
611 {
612 VideoState *is = opaque;
613 VideoPicture *vp;
614 double actual_delay, delay, sync_threshold, ref_clock, diff;
615
616
617 if (is->video_st) {
618 if (is->pictq_size == 0) {
619 /* if no picture, need to wait */
620 schedule_refresh(is, 1);
621 } else {
622 /* dequeue the picture */
623 vp = &is->pictq[is->pictq_rindex];
624
625 /* update current video pts */
626 is->video_current_pts = vp->pts;
627 is->video_current_pts_time = av_gettime();
628
629 /* compute nominal delay */
630 delay = vp->pts - is->frame_last_pts;
631 if (delay <= 0 || delay >= 1.0) {
632 /* if incorrect delay, use previous one */
633 delay = is->frame_last_delay;
634 }
635 is->frame_last_delay = delay;
636 is->frame_last_pts = vp->pts;
637
638 /* update delay to follow master synchronisation source */
639 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
640 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
641 /* if video is slave, we try to correct big delays by
642 duplicating or deleting a frame */
643 ref_clock = get_master_clock(is);
644 diff = vp->pts - ref_clock;
645
646 /* skip or repeat frame. We take into account the
647 delay to compute the threshold. I still don't know
648 if it is the best guess */
649 sync_threshold = AV_SYNC_THRESHOLD;
650 if (delay > sync_threshold)
651 sync_threshold = delay;
652 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
653 if (diff <= -sync_threshold)
654 delay = 0;
655 else if (diff >= sync_threshold)
656 delay = 2 * delay;
657 }
658 }
659
660 is->frame_timer += delay;
661 /* compute the REAL delay (we need to do that to avoid
662 long term errors */
663 actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
664 if (actual_delay < 0.010) {
665 /* XXX: should skip picture */
666 actual_delay = 0.010;
667 }
668 /* launch timer for next picture */
669 schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
670
671 #if defined(DEBUG_SYNC)
672 printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
673 delay, actual_delay, vp->pts, -diff);
674 #endif
675
676 /* display picture */
677 video_display(is);
678
679 /* update queue size and signal for next picture */
680 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
681 is->pictq_rindex = 0;
682
683 SDL_LockMutex(is->pictq_mutex);
684 is->pictq_size--;
685 SDL_CondSignal(is->pictq_cond);
686 SDL_UnlockMutex(is->pictq_mutex);
687 }
688 } else if (is->audio_st) {
689 /* draw the next audio frame */
690
691 schedule_refresh(is, 40);
692
693 /* if only audio stream, then display the audio bars (better
694 than nothing, just to test the implementation */
695
696 /* display picture */
697 video_display(is);
698 } else {
699 schedule_refresh(is, 100);
700 }
701 if (show_status) {
702 static int64_t last_time;
703 int64_t cur_time;
704 int aqsize, vqsize;
705 double av_diff;
706
707 cur_time = av_gettime();
708 if (!last_time || (cur_time - last_time) >= 500 * 1000) {
709 aqsize = 0;
710 vqsize = 0;
711 if (is->audio_st)
712 aqsize = is->audioq.size;
713 if (is->video_st)
714 vqsize = is->videoq.size;
715 av_diff = 0;
716 if (is->audio_st && is->video_st)
717 av_diff = get_audio_clock(is) - get_video_clock(is);
718 printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB \r",
719 get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024);
720 fflush(stdout);
721 last_time = cur_time;
722 }
723 }
724 }
725
726 /* allocate a picture (needs to do that in main thread to avoid
727 potential locking problems */
728 static void alloc_picture(void *opaque)
729 {
730 VideoState *is = opaque;
731 VideoPicture *vp;
732
733 vp = &is->pictq[is->pictq_windex];
734
735 if (vp->bmp)
736 SDL_FreeYUVOverlay(vp->bmp);
737
738 #if 0
739 /* XXX: use generic function */
740 /* XXX: disable overlay if no hardware acceleration or if RGB format */
741 switch(is->video_st->codec.pix_fmt) {
742 case PIX_FMT_YUV420P:
743 case PIX_FMT_YUV422P:
744 case PIX_FMT_YUV444P:
745 case PIX_FMT_YUV422:
746 case PIX_FMT_YUV410P:
747 case PIX_FMT_YUV411P:
748 is_yuv = 1;
749 break;
750 default:
751 is_yuv = 0;
752 break;
753 }
754 #endif
755 vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec.width,
756 is->video_st->codec.height,
757 SDL_YV12_OVERLAY,
758 screen);
759 vp->width = is->video_st->codec.width;
760 vp->height = is->video_st->codec.height;
761
762 SDL_LockMutex(is->pictq_mutex);
763 vp->allocated = 1;
764 SDL_CondSignal(is->pictq_cond);
765 SDL_UnlockMutex(is->pictq_mutex);
766 }
767
768 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
769 {
770 VideoPicture *vp;
771 int dst_pix_fmt;
772 AVPicture pict;
773
774 /* wait until we have space to put a new picture */
775 SDL_LockMutex(is->pictq_mutex);
776 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
777 !is->videoq.abort_request) {
778 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
779 }
780 SDL_UnlockMutex(is->pictq_mutex);
781
782 if (is->videoq.abort_request)
783 return -1;
784
785 vp = &is->pictq[is->pictq_windex];
786
787 /* alloc or resize hardware picture buffer */
788 if (!vp->bmp ||
789 vp->width != is->video_st->codec.width ||
790 vp->height != is->video_st->codec.height) {
791 SDL_Event event;
792
793 vp->allocated = 0;
794
795 /* the allocation must be done in the main thread to avoid
796 locking problems */
797 event.type = FF_ALLOC_EVENT;
798 event.user.data1 = is;
799 SDL_PushEvent(&event);
800
801 /* wait until the picture is allocated */
802 SDL_LockMutex(is->pictq_mutex);
803 while (!vp->allocated && !is->videoq.abort_request) {
804 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
805 }
806 SDL_UnlockMutex(is->pictq_mutex);
807
808 if (is->videoq.abort_request)
809 return -1;
810 }
811
812 /* if the frame is not skipped, then display it */
813 if (vp->bmp) {
814 /* get a pointer on the bitmap */
815 SDL_LockYUVOverlay (vp->bmp);
816
817 dst_pix_fmt = PIX_FMT_YUV420P;
818 pict.data[0] = vp->bmp->pixels[0];
819 pict.data[1] = vp->bmp->pixels[2];
820 pict.data[2] = vp->bmp->pixels[1];
821
822 pict.linesize[0] = vp->bmp->pitches[0];
823 pict.linesize[1] = vp->bmp->pitches[2];
824 pict.linesize[2] = vp->bmp->pitches[1];
825 img_convert(&pict, dst_pix_fmt,
826 (AVPicture *)src_frame, is->video_st->codec.pix_fmt,
827 is->video_st->codec.width, is->video_st->codec.height);
828 /* update the bitmap content */
829 SDL_UnlockYUVOverlay(vp->bmp);
830
831 vp->pts = pts;
832
833 /* now we can update the picture count */
834 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
835 is->pictq_windex = 0;
836 SDL_LockMutex(is->pictq_mutex);
837 is->pictq_size++;
838 SDL_UnlockMutex(is->pictq_mutex);
839 }
840 return 0;
841 }
842
843 /* compute the exact PTS for the picture if it is omitted in the stream */
844 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
845 {
846 double frame_delay, pts;
847
848 pts = pts1;
849
850 if (pts != 0) {
851 /* update video clock with pts, if present */
852 is->video_clock = pts;
853 } else {
854 pts = is->video_clock;
855 }
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
860 clock accordingly */
861 if (src_frame->repeat_pict) {
862 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
863 }
864 is->video_clock += frame_delay;
865
866 #if defined(DEBUG_SYNC) && 0
867 {
868 int ftype;
869 if (src_frame->pict_type == FF_B_TYPE)
870 ftype = 'B';
871 else if (src_frame->pict_type == FF_I_TYPE)
872 ftype = 'I';
873 else
874 ftype = 'P';
875 printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
876 ftype, pts, pts1);
877 }
878 #endif
879 return queue_picture(is, src_frame, pts);
880 }
881
882 static int video_thread(void *arg)
883 {
884 VideoState *is = arg;
885 AVPacket pkt1, *pkt = &pkt1;
886 int len1, got_picture;
887 AVFrame *frame= avcodec_alloc_frame();
888 double pts;
889
890 for(;;) {
891 while (is->paused && !is->videoq.abort_request) {
892 SDL_Delay(10);
893 }
894 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
895 break;
896 /* NOTE: ipts is the PTS of the _first_ picture beginning in
897 this packet, if any */
898 pts = 0;
899 if (pkt->dts != AV_NOPTS_VALUE)
900 pts = (double)pkt->dts / AV_TIME_BASE;
901
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)
909 goto the_end;
910 } else {
911 len1 = avcodec_decode_video(&is->video_st->codec,
912 frame, &got_picture,
913 pkt->data, pkt->size);
914 // if (len1 < 0)
915 // break;
916 if (got_picture) {
917 if (output_picture2(is, frame, pts) < 0)
918 goto the_end;
919 }
920 }
921 av_free_packet(pkt);
922 if (step)
923 if (cur_stream)
924 stream_pause(cur_stream);
925 }
926 the_end:
927 av_free(frame);
928 return 0;
929 }
930
931 /* copy samples for viewing in editor window */
932 static void update_sample_display(VideoState *is, short *samples, int samples_size)
933 {
934 int size, len, channels;
935
936 channels = is->audio_st->codec.channels;
937
938 size = samples_size / sizeof(short);
939 while (size > 0) {
940 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
941 if (len > size)
942 len = size;
943 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
944 samples += len;
945 is->sample_array_index += len;
946 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
947 is->sample_array_index = 0;
948 size -= len;
949 }
950 }
951
952 /* return the new audio buffer size (samples can be added or deleted
953 to get better sync if video or external master clock) */
954 static int synchronize_audio(VideoState *is, short *samples,
955 int samples_size1, double pts)
956 {
957 int n, samples_size;
958 double ref_clock;
959
960 n = 2 * is->audio_st->codec.channels;
961 samples_size = samples_size1;
962
963 /* if not master, then we try to remove or add samples to correct the clock */
964 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
965 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
966 double diff, avg_diff;
967 int wanted_size, min_size, max_size, nb_samples;
968
969 ref_clock = get_master_clock(is);
970 diff = get_audio_clock(is) - ref_clock;
971
972 if (diff < AV_NOSYNC_THRESHOLD) {
973 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
974 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
975 /* not enough measures to have a correct estimate */
976 is->audio_diff_avg_count++;
977 } else {
978 /* estimate the A-V difference */
979 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
980
981 if (fabs(avg_diff) >= is->audio_diff_threshold) {
982 wanted_size = samples_size + ((int)(diff * is->audio_st->codec.sample_rate) * n);
983 nb_samples = samples_size / n;
984
985 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
986 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
987 if (wanted_size < min_size)
988 wanted_size = min_size;
989 else if (wanted_size > max_size)
990 wanted_size = max_size;
991
992 /* add or remove samples to correction the synchro */
993 if (wanted_size < samples_size) {
994 /* remove samples */
995 samples_size = wanted_size;
996 } else if (wanted_size > samples_size) {
997 uint8_t *samples_end, *q;
998 int nb;
999
1000 /* add samples */
1001 nb = (samples_size - wanted_size);
1002 samples_end = (uint8_t *)samples + samples_size - n;
1003 q = samples_end + n;
1004 while (nb > 0) {
1005 memcpy(q, samples_end, n);
1006 q += n;
1007 nb -= n;
1008 }
1009 samples_size = wanted_size;
1010 }
1011 }
1012 #if 0
1013 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1014 diff, avg_diff, samples_size - samples_size1,
1015 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1016 #endif
1017 }
1018 } else {
1019 /* too big difference : may be initial PTS errors, so
1020 reset A-V filter */
1021 is->audio_diff_avg_count = 0;
1022 is->audio_diff_cum = 0;
1023 }
1024 }
1025
1026 return samples_size;
1027 }
1028
1029 /* decode one audio frame and returns its uncompressed size */
1030 static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, double *pts_ptr)
1031 {
1032 AVPacket *pkt = &is->audio_pkt;
1033 int n, len1, data_size;
1034 double pts;
1035
1036 for(;;) {
1037 /* NOTE: the audio packet can contain several frames */
1038 while (is->audio_pkt_size > 0) {
1039 len1 = avcodec_decode_audio(&is->audio_st->codec,
1040 (int16_t *)audio_buf, &data_size,
1041 is->audio_pkt_data, is->audio_pkt_size);
1042 if (len1 < 0) {
1043 /* if error, we skip the frame */
1044 is->audio_pkt_size = 0;
1045 break;
1046 }
1047
1048 is->audio_pkt_data += len1;
1049 is->audio_pkt_size -= len1;
1050 if (data_size <= 0)
1051 continue;
1052 /* if no pts, then compute it */
1053 pts = is->audio_clock;
1054 *pts_ptr = pts;
1055 n = 2 * is->audio_st->codec.channels;
1056 is->audio_clock += (double)data_size /
1057 (double)(n * is->audio_st->codec.sample_rate);
1058 #if defined(DEBUG_SYNC)
1059 {
1060 static double last_clock;
1061 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1062 is->audio_clock - last_clock,
1063 is->audio_clock, pts);
1064 last_clock = is->audio_clock;
1065 }
1066 #endif
1067 return data_size;
1068 }
1069
1070 /* free the current packet */
1071 if (pkt->data)
1072 av_free_packet(pkt);
1073
1074 if (is->paused || is->audioq.abort_request) {
1075 return -1;
1076 }
1077
1078 /* read next packet */
1079 if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1080 return -1;
1081 is->audio_pkt_data = pkt->data;
1082 is->audio_pkt_size = pkt->size;
1083
1084 /* if update the audio clock with the pts */
1085 if (pkt->pts != AV_NOPTS_VALUE) {
1086 is->audio_clock = (double)pkt->pts / AV_TIME_BASE;
1087 }
1088 }
1089 }
1090
1091 /* get the current audio output buffer size, in samples. With SDL, we
1092 cannot have a precise information */
1093 static int audio_write_get_buf_size(VideoState *is)
1094 {
1095 return is->audio_hw_buf_size - is->audio_buf_index;
1096 }
1097
1098
1099 /* prepare a new audio buffer */
1100 void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1101 {
1102 VideoState *is = opaque;
1103 int audio_size, len1;
1104 double pts;
1105
1106 audio_callback_time = av_gettime();
1107
1108 while (len > 0) {
1109 if (is->audio_buf_index >= is->audio_buf_size) {
1110 audio_size = audio_decode_frame(is, is->audio_buf, &pts);
1111 if (audio_size < 0) {
1112 /* if error, just output silence */
1113 is->audio_buf_size = 1024;
1114 memset(is->audio_buf, 0, is->audio_buf_size);
1115 } else {
1116 if (is->show_audio)
1117 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1118 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
1119 pts);
1120 is->audio_buf_size = audio_size;
1121 }
1122 is->audio_buf_index = 0;
1123 }
1124 len1 = is->audio_buf_size - is->audio_buf_index;
1125 if (len1 > len)
1126 len1 = len;
1127 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1128 len -= len1;
1129 stream += len1;
1130 is->audio_buf_index += len1;
1131 }
1132 }
1133
1134
1135 /* open a given stream. Return 0 if OK */
1136 static int stream_component_open(VideoState *is, int stream_index)
1137 {
1138 AVFormatContext *ic = is->ic;
1139 AVCodecContext *enc;
1140 AVCodec *codec;
1141 SDL_AudioSpec wanted_spec, spec;
1142
1143 if (stream_index < 0 || stream_index >= ic->nb_streams)
1144 return -1;
1145 enc = &ic->streams[stream_index]->codec;
1146
1147 /* prepare audio output */
1148 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1149 wanted_spec.freq = enc->sample_rate;
1150 wanted_spec.format = AUDIO_S16SYS;
1151 /* hack for AC3. XXX: suppress that */
1152 if (enc->channels > 2)
1153 enc->channels = 2;
1154 wanted_spec.channels = enc->channels;
1155 wanted_spec.silence = 0;
1156 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1157 wanted_spec.callback = sdl_audio_callback;
1158 wanted_spec.userdata = is;
1159 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1160 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1161 return -1;
1162 }
1163 is->audio_hw_buf_size = spec.size;
1164 }
1165
1166 codec = avcodec_find_decoder(enc->codec_id);
1167 enc->debug_mv = debug_mv;
1168 enc->debug = debug;
1169 enc->workaround_bugs = workaround_bugs;
1170 enc->lowres = lowres;
1171 if(lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
1172 enc->idct_algo= idct;
1173 if(fast) enc->flags2 |= CODEC_FLAG2_FAST;
1174 if (!codec ||
1175 avcodec_open(enc, codec) < 0)
1176 return -1;
1177 #if defined(HAVE_THREADS)
1178 if(thread_count>1)
1179 avcodec_thread_init(enc, thread_count);
1180 #endif
1181 enc->thread_count= thread_count;
1182 switch(enc->codec_type) {
1183 case CODEC_TYPE_AUDIO:
1184 is->audio_stream = stream_index;
1185 is->audio_st = ic->streams[stream_index];
1186 is->audio_buf_size = 0;
1187 is->audio_buf_index = 0;
1188
1189 /* init averaging filter */
1190 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1191 is->audio_diff_avg_count = 0;
1192 /* since we do not have a precise anough audio fifo fullness,
1193 we correct audio sync only if larger than this threshold */
1194 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1195
1196 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1197 packet_queue_init(&is->audioq);
1198 SDL_PauseAudio(0);
1199 break;
1200 case CODEC_TYPE_VIDEO:
1201 is->video_stream = stream_index;
1202 is->video_st = ic->streams[stream_index];
1203
1204 is->frame_last_delay = 40e-3;
1205 is->frame_timer = (double)av_gettime() / 1000000.0;
1206 is->video_current_pts_time = av_gettime();
1207
1208 packet_queue_init(&is->videoq);
1209 is->video_tid = SDL_CreateThread(video_thread, is);
1210 break;
1211 default:
1212 break;
1213 }
1214 return 0;
1215 }
1216
1217 static void stream_component_close(VideoState *is, int stream_index)
1218 {
1219 AVFormatContext *ic = is->ic;
1220 AVCodecContext *enc;
1221
1222 enc = &ic->streams[stream_index]->codec;
1223
1224 switch(enc->codec_type) {
1225 case CODEC_TYPE_AUDIO:
1226 packet_queue_abort(&is->audioq);
1227
1228 SDL_CloseAudio();
1229
1230 packet_queue_end(&is->audioq);
1231 break;
1232 case CODEC_TYPE_VIDEO:
1233 packet_queue_abort(&is->videoq);
1234
1235 /* note: we also signal this mutex to make sure we deblock the
1236 video thread in all cases */
1237 SDL_LockMutex(is->pictq_mutex);
1238 SDL_CondSignal(is->pictq_cond);
1239 SDL_UnlockMutex(is->pictq_mutex);
1240
1241 SDL_WaitThread(is->video_tid, NULL);
1242
1243 packet_queue_end(&is->videoq);
1244 break;
1245 default:
1246 break;
1247 }
1248
1249 avcodec_close(enc);
1250 switch(enc->codec_type) {
1251 case CODEC_TYPE_AUDIO:
1252 is->audio_st = NULL;
1253 is->audio_stream = -1;
1254 break;
1255 case CODEC_TYPE_VIDEO:
1256 is->video_st = NULL;
1257 is->video_stream = -1;
1258 break;
1259 default:
1260 break;
1261 }
1262 }
1263
1264 void dump_stream_info(AVFormatContext *s)
1265 {
1266 if (s->track != 0)
1267 fprintf(stderr, "Track: %d\n", s->track);
1268 if (s->title[0] != '\0')
1269 fprintf(stderr, "Title: %s\n", s->title);
1270 if (s->author[0] != '\0')
1271 fprintf(stderr, "Author: %s\n", s->author);
1272 if (s->album[0] != '\0')
1273 fprintf(stderr, "Album: %s\n", s->album);
1274 if (s->year != 0)
1275 fprintf(stderr, "Year: %d\n", s->year);
1276 if (s->genre[0] != '\0')
1277 fprintf(stderr, "Genre: %s\n", s->genre);
1278 }
1279
1280 /* since we have only one decoding thread, we can use a global
1281 variable instead of a thread local variable */
1282 static VideoState *global_video_state;
1283
1284 static int decode_interrupt_cb(void)
1285 {
1286 return (global_video_state && global_video_state->abort_request);
1287 }
1288
1289 /* this thread gets the stream from the disk or the network */
1290 static int decode_thread(void *arg)
1291 {
1292 VideoState *is = arg;
1293 AVFormatContext *ic;
1294 int err, i, ret, video_index, audio_index, use_play;
1295 AVPacket pkt1, *pkt = &pkt1;
1296 AVFormatParameters params, *ap = &params;
1297
1298 video_index = -1;
1299 audio_index = -1;
1300 is->video_stream = -1;
1301 is->audio_stream = -1;
1302
1303 global_video_state = is;
1304 url_set_interrupt_cb(decode_interrupt_cb);
1305
1306 memset(ap, 0, sizeof(*ap));
1307 ap->image_format = image_format;
1308 ap->initial_pause = 1; /* we force a pause when starting an RTSP
1309 stream */
1310
1311 err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1312 if (err < 0) {
1313 print_error(is->filename, err);
1314 ret = -1;
1315 goto fail;
1316 }
1317 is->ic = ic;
1318 #ifdef CONFIG_NETWORK
1319 use_play = (ic->iformat == &rtsp_demux);
1320 #else
1321 use_play = 0;
1322 #endif
1323 if (!use_play) {
1324 err = av_find_stream_info(ic);
1325 if (err < 0) {
1326 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1327 ret = -1;
1328 goto fail;
1329 }
1330 }
1331
1332 /* if seeking requested, we execute it */
1333 if (start_time != AV_NOPTS_VALUE) {
1334 int64_t timestamp;
1335
1336 timestamp = start_time;
1337 /* add the stream start time */
1338 if (ic->start_time != AV_NOPTS_VALUE)
1339 timestamp += ic->start_time;
1340 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
1341 if (ret < 0) {
1342 fprintf(stderr, "%s: could not seek to position %0.3f\n",
1343 is->filename, (double)timestamp / AV_TIME_BASE);
1344 }
1345 }
1346
1347 /* now we can begin to play (RTSP stream only) */
1348 av_read_play(ic);
1349
1350 if (use_play) {
1351 err = av_find_stream_info(ic);
1352 if (err < 0) {
1353 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1354 ret = -1;
1355 goto fail;
1356 }
1357 }
1358
1359 for(i = 0; i < ic->nb_streams; i++) {
1360 AVCodecContext *enc = &ic->streams[i]->codec;
1361 switch(enc->codec_type) {
1362 case CODEC_TYPE_AUDIO:
1363 if (audio_index < 0 && !audio_disable)
1364 audio_index = i;
1365 break;
1366 case CODEC_TYPE_VIDEO:
1367 if (video_index < 0 && !video_disable)
1368 video_index = i;
1369 break;
1370 default:
1371 break;
1372 }
1373 }
1374 if (show_status) {
1375 dump_format(ic, 0, is->filename, 0);
1376 dump_stream_info(ic);
1377 }
1378
1379 /* open the streams */
1380 if (audio_index >= 0) {
1381 stream_component_open(is, audio_index);
1382 }
1383
1384 if (video_index >= 0) {
1385 stream_component_open(is, video_index);
1386 } else {
1387 if (!display_disable)
1388 is->show_audio = 1;
1389 }
1390
1391 if (is->video_stream < 0 && is->audio_stream < 0) {
1392 fprintf(stderr, "%s: could not open codecs\n", is->filename);
1393 ret = -1;
1394 goto fail;
1395 }
1396
1397 for(;;) {
1398 if (is->abort_request)
1399 break;
1400 #ifdef CONFIG_NETWORK
1401 if (is->paused != is->last_paused) {
1402 is->last_paused = is->paused;
1403 if (is->paused)
1404 av_read_pause(ic);
1405 else
1406 av_read_play(ic);
1407 }
1408 if (is->paused && ic->iformat == &rtsp_demux) {
1409 /* wait 10 ms to avoid trying to get another packet */
1410 /* XXX: horrible */
1411 SDL_Delay(10);
1412 continue;
1413 }
1414 #endif
1415 if (is->seek_req) {
1416 /* XXX: must lock decoder threads */
1417 ret = av_seek_frame(is->ic, -1, is->seek_pos, is->seek_flags);
1418 if (ret < 0) {
1419 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
1420 }else{
1421 if (is->audio_stream >= 0) {
1422 packet_queue_flush(&is->audioq);
1423 }
1424 if (is->video_stream >= 0) {
1425 packet_queue_flush(&is->videoq);
1426 avcodec_flush_buffers(&ic->streams[video_index]->codec);
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 /* add the refresh timer to draw the picture */
1508 schedule_refresh(is, 40);
1509
1510 is->av_sync_type = av_sync_type;
1511 is->parse_tid = SDL_CreateThread(decode_thread, is);
1512 if (!is->parse_tid) {
1513 av_free(is);
1514 return NULL;
1515 }
1516 return is;
1517 }
1518
1519 static void stream_close(VideoState *is)
1520 {
1521 VideoPicture *vp;
1522 int i;
1523 /* XXX: use a special url_shutdown call to abort parse cleanly */
1524 is->abort_request = 1;
1525 SDL_WaitThread(is->parse_tid, NULL);
1526
1527 /* free all pictures */
1528 for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
1529 vp = &is->pictq[i];
1530 if (vp->bmp) {
1531 SDL_FreeYUVOverlay(vp->bmp);
1532 vp->bmp = NULL;
1533 }
1534 }
1535 SDL_DestroyMutex(is->pictq_mutex);
1536 SDL_DestroyCond(is->pictq_cond);
1537 }
1538
1539 void stream_cycle_channel(VideoState *is, int codec_type)
1540 {
1541 AVFormatContext *ic = is->ic;
1542 int start_index, stream_index;
1543 AVStream *st;
1544
1545 if (codec_type == CODEC_TYPE_VIDEO)
1546 start_index = is->video_stream;
1547 else
1548 start_index = is->audio_stream;
1549 if (start_index < 0)
1550 return;
1551 stream_index = start_index;
1552 for(;;) {
1553 if (++stream_index >= is->ic->nb_streams)
1554 stream_index = 0;
1555 if (stream_index == start_index)
1556 return;
1557 st = ic->streams[stream_index];
1558 if (st->codec.codec_type == codec_type) {
1559 /* check that parameters are OK */
1560 switch(codec_type) {
1561 case CODEC_TYPE_AUDIO:
1562 if (st->codec.sample_rate != 0 &&
1563 st->codec.channels != 0)
1564 goto the_end;
1565 break;
1566 case CODEC_TYPE_VIDEO:
1567 goto the_end;
1568 default:
1569 break;
1570 }
1571 }
1572 }
1573 the_end:
1574 stream_component_close(is, start_index);
1575 stream_component_open(is, stream_index);
1576 }
1577
1578
1579 void toggle_full_screen(void)
1580 {
1581 int w, h, flags;
1582 is_full_screen = !is_full_screen;
1583 if (!fs_screen_width) {
1584 /* use default SDL method */
1585 SDL_WM_ToggleFullScreen(screen);
1586 } else {
1587 /* use the recorded resolution */
1588 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1589 if (is_full_screen) {
1590 w = fs_screen_width;
1591 h = fs_screen_height;
1592 flags |= SDL_FULLSCREEN;
1593 } else {
1594 w = screen_width;
1595 h = screen_height;
1596 flags |= SDL_RESIZABLE;
1597 }
1598 screen = SDL_SetVideoMode(w, h, 0, flags);
1599 cur_stream->width = w;
1600 cur_stream->height = h;
1601 }
1602 }
1603
1604 void toggle_pause(void)
1605 {
1606 if (cur_stream)
1607 stream_pause(cur_stream);
1608 step = 0;
1609 }
1610
1611 void step_to_next_frame(void)
1612 {
1613 if (cur_stream) {
1614 if (cur_stream->paused)
1615 cur_stream->paused=0;
1616 cur_stream->video_current_pts = get_video_clock(cur_stream);
1617 }
1618 step = 1;
1619 }
1620
1621 void do_exit(void)
1622 {
1623 if (cur_stream) {
1624 stream_close(cur_stream);
1625 cur_stream = NULL;
1626 }
1627 if (show_status)
1628 printf("\n");
1629 SDL_Quit();
1630 exit(0);
1631 }
1632
1633 void toggle_audio_display(void)
1634 {
1635 if (cur_stream) {
1636 cur_stream->show_audio = !cur_stream->show_audio;
1637 }
1638 }
1639
1640 /* handle an event sent by the GUI */
1641 void event_loop(void)
1642 {
1643 SDL_Event event;
1644 double incr, pos, frac;
1645
1646 for(;;) {
1647 SDL_WaitEvent(&event);
1648 switch(event.type) {
1649 case SDL_KEYDOWN:
1650 switch(event.key.keysym.sym) {
1651 case SDLK_ESCAPE:
1652 case SDLK_q:
1653 do_exit();
1654 break;
1655 case SDLK_f:
1656 toggle_full_screen();
1657 break;
1658 case SDLK_p:
1659 case SDLK_SPACE:
1660 toggle_pause();
1661 break;
1662 case SDLK_s: //S: Step to next frame
1663 step_to_next_frame();
1664 break;
1665 case SDLK_a:
1666 if (cur_stream)
1667 stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
1668 break;
1669 case SDLK_v:
1670 if (cur_stream)
1671 stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
1672 break;
1673 case SDLK_w:
1674 toggle_audio_display();
1675 break;
1676 case SDLK_LEFT:
1677 incr = -10.0;
1678 goto do_seek;
1679 case SDLK_RIGHT:
1680 incr = 10.0;
1681 goto do_seek;
1682 case SDLK_UP:
1683 incr = 60.0;
1684 goto do_seek;
1685 case SDLK_DOWN:
1686 incr = -60.0;
1687 do_seek:
1688 if (cur_stream) {
1689 pos = get_master_clock(cur_stream);
1690 pos += incr;
1691 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), incr);
1692 }
1693 break;
1694 default:
1695 break;
1696 }
1697 break;
1698 case SDL_MOUSEBUTTONDOWN:
1699 if (cur_stream) {
1700 int ns, hh, mm, ss;
1701 int tns, thh, tmm, tss;
1702 tns = cur_stream->ic->duration/1000000LL;
1703 thh = tns/3600;
1704 tmm = (tns%3600)/60;
1705 tss = (tns%60);
1706 frac = (double)event.button.x/(double)cur_stream->width;
1707 ns = frac*tns;
1708 hh = ns/3600;
1709 mm = (ns%3600)/60;
1710 ss = (ns%60);
1711 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
1712 hh, mm, ss, thh, tmm, tss);
1713 stream_seek(cur_stream, (int64_t)(cur_stream->ic->start_time+frac*cur_stream->ic->duration), 0);
1714 }
1715 break;
1716 case SDL_VIDEORESIZE:
1717 if (cur_stream) {
1718 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
1719 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
1720 cur_stream->width = event.resize.w;
1721 cur_stream->height = event.resize.h;
1722 }
1723 break;
1724 case SDL_QUIT:
1725 case FF_QUIT_EVENT:
1726 do_exit();
1727 break;
1728 case FF_ALLOC_EVENT:
1729 alloc_picture(event.user.data1);
1730 break;
1731 case FF_REFRESH_EVENT:
1732 video_refresh_timer(event.user.data1);
1733 break;
1734 default:
1735 break;
1736 }
1737 }
1738 }
1739
1740 void opt_width(const char *arg)
1741 {
1742 screen_width = atoi(arg);
1743 }
1744
1745 void opt_height(const char *arg)
1746 {
1747 screen_height = atoi(arg);
1748 }
1749
1750 static void opt_format(const char *arg)
1751 {
1752 file_iformat = av_find_input_format(arg);
1753 if (!file_iformat) {
1754 fprintf(stderr, "Unknown input format: %s\n", arg);
1755 exit(1);
1756 }
1757 }
1758
1759 static void opt_image_format(const char *arg)
1760 {
1761 AVImageFormat *f;
1762
1763 for(f = first_image_format; f != NULL; f = f->next) {
1764 if (!strcmp(arg, f->name))
1765 break;
1766 }
1767 if (!f) {
1768 fprintf(stderr, "Unknown image format: '%s'\n", arg);
1769 exit(1);
1770 }
1771 image_format = f;
1772 }
1773
1774 #ifdef CONFIG_NETWORK
1775 void opt_rtp_tcp(void)
1776 {
1777 /* only tcp protocol */
1778 rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
1779 }
1780 #endif
1781
1782 void opt_sync(const char *arg)
1783 {
1784 if (!strcmp(arg, "audio"))
1785 av_sync_type = AV_SYNC_AUDIO_MASTER;
1786 else if (!strcmp(arg, "video"))
1787 av_sync_type = AV_SYNC_VIDEO_MASTER;
1788 else if (!strcmp(arg, "ext"))
1789 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
1790 else
1791 show_help();
1792 }
1793
1794 void opt_seek(const char *arg)
1795 {
1796 start_time = parse_date(arg, 1);
1797 }
1798
1799 static void opt_debug(const char *arg)
1800 {
1801 debug = atoi(arg);
1802 }
1803
1804 static void opt_vismv(const char *arg)
1805 {
1806 debug_mv = atoi(arg);
1807 }
1808
1809 static void opt_thread_count(const char *arg)
1810 {
1811 thread_count= atoi(arg);
1812 #if !defined(HAVE_THREADS)
1813 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
1814 #endif
1815 }
1816
1817 const OptionDef options[] = {
1818 { "h", 0, {(void*)show_help}, "show help" },
1819 { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
1820 { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
1821 #if 0
1822 /* disabled as SDL/X11 does not support it correctly on application launch */
1823 { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
1824 #endif
1825 { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
1826 { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
1827 { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
1828 { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
1829 { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
1830 { "img", HAS_ARG, {(void*)opt_image_format}, "force image format", "img_fmt" },
1831 { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
1832 { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
1833 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&workaround_bugs}, "workaround bugs", "" },
1834 { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
1835 { "fast", OPT_BOOL | OPT_EXPERT, {(void*)&fast}, "non spec compliant optimizations", "" },
1836 { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
1837 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&idct}, "set idct algo", "algo" },
1838 #ifdef CONFIG_NETWORK
1839 { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
1840 #endif
1841 { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
1842 { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
1843 { NULL, },
1844 };
1845
1846 void show_help(void)
1847 {
1848 printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
1849 "usage: ffplay [options] input_file\n"
1850 "Simple media player\n");
1851 printf("\n");
1852 show_help_options(options, "Main options:\n",
1853 OPT_EXPERT, 0);
1854 show_help_options(options, "\nAdvanced options:\n",
1855 OPT_EXPERT, OPT_EXPERT);
1856 printf("\nWhile playing:\n"
1857 "q, ESC quit\n"
1858 "f toggle full screen\n"
1859 "p, SPC pause\n"
1860 "a cycle audio channel\n"
1861 "v cycle video channel\n"
1862 "w show audio waves\n"
1863 "left/right seek backward/forward 10 seconds\n"
1864 "down/up seek backward/forward 1 minute\n"
1865 "mouse click seek to percentage in file corresponding to fraction of width\n"
1866 );
1867 exit(1);
1868 }
1869
1870 void parse_arg_file(const char *filename)
1871 {
1872 if (!strcmp(filename, "-"))
1873 filename = "pipe:";
1874 input_filename = filename;
1875 }
1876
1877 /* Called from the main */
1878 int main(int argc, char **argv)
1879 {
1880 int flags, w, h;
1881
1882 /* register all codecs, demux and protocols */
1883 av_register_all();
1884
1885 parse_options(argc, argv, options);
1886
1887 if (!input_filename)
1888 show_help();
1889
1890 if (display_disable) {
1891 video_disable = 1;
1892 }
1893 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
1894 #ifndef CONFIG_WIN32
1895 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 */
1896 #endif
1897 if (SDL_Init (flags)) {
1898 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
1899 exit(1);
1900 }
1901
1902 if (!display_disable) {
1903 #ifdef HAVE_X11
1904 /* save the screen resolution... SDL should allow full screen
1905 by resizing the window */
1906 {
1907 Display *dpy;
1908 dpy = XOpenDisplay(NULL);
1909 if (dpy) {
1910 fs_screen_width = DisplayWidth(dpy, DefaultScreen(dpy));
1911 fs_screen_height = DisplayHeight(dpy, DefaultScreen(dpy));
1912 XCloseDisplay(dpy);
1913 }
1914 }
1915 #endif
1916 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1917 if (is_full_screen && fs_screen_width) {
1918 w = fs_screen_width;
1919 h = fs_screen_height;
1920 flags |= SDL_FULLSCREEN;
1921 } else {
1922 w = screen_width;
1923 h = screen_height;
1924 flags |= SDL_RESIZABLE;
1925 }
1926 screen = SDL_SetVideoMode(w, h, 0, flags);
1927 if (!screen) {
1928 fprintf(stderr, "SDL: could not set video mode - exiting\n");
1929 exit(1);
1930 }
1931 SDL_WM_SetCaption("FFplay", "FFplay");
1932 }
1933
1934 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
1935 SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
1936 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
1937 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
1938
1939 cur_stream = stream_open(input_filename, file_iformat);
1940
1941 event_loop();
1942
1943 /* never returns */
1944
1945 return 0;
1946 }
Libav master