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[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 0.08
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 int64_t seek_pos;
96 AVFormatContext *ic;
97 int dtg_active_format;
98
99 int audio_stream;
100
101 int av_sync_type;
102 double external_clock; /* external clock base */
103 int64_t external_clock_time;
104
105 double audio_clock;
106 double audio_diff_cum; /* used for AV difference average computation */
107 double audio_diff_avg_coef;
108 double audio_diff_threshold;
109 int audio_diff_avg_count;
110 AVStream *audio_st;
111 PacketQueue audioq;
112 int audio_hw_buf_size;
113 /* samples output by the codec. we reserve more space for avsync
114 compensation */
115 uint8_t audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
116 int audio_buf_size; /* in bytes */
117 int audio_buf_index; /* in bytes */
118 AVPacket audio_pkt;
119 uint8_t *audio_pkt_data;
120 int audio_pkt_size;
121
122 int show_audio; /* if true, display audio samples */
123 int16_t sample_array[SAMPLE_ARRAY_SIZE];
124 int sample_array_index;
125 int last_i_start;
126
127 double frame_timer;
128 double frame_last_pts;
129 double frame_last_delay;
130 double video_clock;
131 int video_stream;
132 AVStream *video_st;
133 PacketQueue videoq;
134 double video_last_P_pts; /* pts of the last P picture (needed if B
135 frames are present) */
136 double video_current_pts; /* current displayed pts (different from
137 video_clock if frame fifos are used) */
138 int64_t video_current_pts_time; /* time at which we updated
139 video_current_pts - used to
140 have running video pts */
141 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
142 int pictq_size, pictq_rindex, pictq_windex;
143 SDL_mutex *pictq_mutex;
144 SDL_cond *pictq_cond;
145
146 // QETimer *video_timer;
147 char filename[1024];
148 int width, height, xleft, ytop;
149 } VideoState;
150
151 void show_help(void);
152 static int audio_write_get_buf_size(VideoState *is);
153
154 /* options specified by the user */
155 static AVInputFormat *file_iformat;
156 static AVImageFormat *image_format;
157 static const char *input_filename;
158 static int fs_screen_width;
159 static int fs_screen_height;
160 static int screen_width = 640;
161 static int screen_height = 480;
162 static int audio_disable;
163 static int video_disable;
164 static int display_disable;
165 static int show_status;
166 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
167 static int64_t start_time = AV_NOPTS_VALUE;
168 static int debug = 0;
169 static int debug_mv = 0;
170 static int step = 0;
171 static int thread_count = 1;
172
173 /* current context */
174 static int is_full_screen;
175 static VideoState *cur_stream;
176 static int64_t audio_callback_time;
177
178 #define FF_ALLOC_EVENT (SDL_USEREVENT)
179 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
180 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
181
182 SDL_Surface *screen;
183
184 /* packet queue handling */
185 static void packet_queue_init(PacketQueue *q)
186 {
187 memset(q, 0, sizeof(PacketQueue));
188 q->mutex = SDL_CreateMutex();
189 q->cond = SDL_CreateCond();
190 }
191
192 static void packet_queue_flush(PacketQueue *q)
193 {
194 AVPacketList *pkt, *pkt1;
195
196 for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
197 pkt1 = pkt->next;
198 av_free_packet(&pkt->pkt);
199 }
200 q->last_pkt = NULL;
201 q->first_pkt = NULL;
202 q->nb_packets = 0;
203 q->size = 0;
204 }
205
206 static void packet_queue_end(PacketQueue *q)
207 {
208 packet_queue_flush(q);
209 SDL_DestroyMutex(q->mutex);
210 SDL_DestroyCond(q->cond);
211 }
212
213 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
214 {
215 AVPacketList *pkt1;
216
217 /* duplicate the packet */
218 if (av_dup_packet(pkt) < 0)
219 return -1;
220
221 pkt1 = av_malloc(sizeof(AVPacketList));
222 if (!pkt1)
223 return -1;
224 pkt1->pkt = *pkt;
225 pkt1->next = NULL;
226
227
228 SDL_LockMutex(q->mutex);
229
230 if (!q->last_pkt)
231
232 q->first_pkt = pkt1;
233 else
234 q->last_pkt->next = pkt1;
235 q->last_pkt = pkt1;
236 q->nb_packets++;
237 q->size += pkt1->pkt.size;
238 /* XXX: should duplicate packet data in DV case */
239 SDL_CondSignal(q->cond);
240
241 SDL_UnlockMutex(q->mutex);
242 return 0;
243 }
244
245 static void packet_queue_abort(PacketQueue *q)
246 {
247 SDL_LockMutex(q->mutex);
248
249 q->abort_request = 1;
250
251 SDL_CondSignal(q->cond);
252
253 SDL_UnlockMutex(q->mutex);
254 }
255
256 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
257 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
258 {
259 AVPacketList *pkt1;
260 int ret;
261
262 SDL_LockMutex(q->mutex);
263
264 for(;;) {
265 if (q->abort_request) {
266 ret = -1;
267 break;
268 }
269
270 pkt1 = q->first_pkt;
271 if (pkt1) {
272 q->first_pkt = pkt1->next;
273 if (!q->first_pkt)
274 q->last_pkt = NULL;
275 q->nb_packets--;
276 q->size -= pkt1->pkt.size;
277 *pkt = pkt1->pkt;
278 av_free(pkt1);
279 ret = 1;
280 break;
281 } else if (!block) {
282 ret = 0;
283 break;
284 } else {
285 SDL_CondWait(q->cond, q->mutex);
286 }
287 }
288 SDL_UnlockMutex(q->mutex);
289 return ret;
290 }
291
292 static inline void fill_rectangle(SDL_Surface *screen,
293 int x, int y, int w, int h, int color)
294 {
295 SDL_Rect rect;
296 rect.x = x;
297 rect.y = y;
298 rect.w = w;
299 rect.h = h;
300 SDL_FillRect(screen, &rect, color);
301 }
302
303 #if 0
304 /* draw only the border of a rectangle */
305 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
306 {
307 int w1, w2, h1, h2;
308
309 /* fill the background */
310 w1 = x;
311 if (w1 < 0)
312 w1 = 0;
313 w2 = s->width - (x + w);
314 if (w2 < 0)
315 w2 = 0;
316 h1 = y;
317 if (h1 < 0)
318 h1 = 0;
319 h2 = s->height - (y + h);
320 if (h2 < 0)
321 h2 = 0;
322 fill_rectangle(screen,
323 s->xleft, s->ytop,
324 w1, s->height,
325 color);
326 fill_rectangle(screen,
327 s->xleft + s->width - w2, s->ytop,
328 w2, s->height,
329 color);
330 fill_rectangle(screen,
331 s->xleft + w1, s->ytop,
332 s->width - w1 - w2, h1,
333 color);
334 fill_rectangle(screen,
335 s->xleft + w1, s->ytop + s->height - h2,
336 s->width - w1 - w2, h2,
337 color);
338 }
339 #endif
340
341 static void video_image_display(VideoState *is)
342 {
343 VideoPicture *vp;
344 float aspect_ratio;
345 int width, height, x, y;
346 SDL_Rect rect;
347
348 vp = &is->pictq[is->pictq_rindex];
349 if (vp->bmp) {
350 /* XXX: use variable in the frame */
351 if (is->video_st->codec.sample_aspect_ratio.num == 0)
352 aspect_ratio = 0;
353 else
354 aspect_ratio = av_q2d(is->video_st->codec.sample_aspect_ratio)
355 * is->video_st->codec.width / is->video_st->codec.height;;
356 if (aspect_ratio <= 0.0)
357 aspect_ratio = (float)is->video_st->codec.width /
358 (float)is->video_st->codec.height;
359 /* if an active format is indicated, then it overrides the
360 mpeg format */
361 #if 0
362 if (is->video_st->codec.dtg_active_format != is->dtg_active_format) {
363 is->dtg_active_format = is->video_st->codec.dtg_active_format;
364 printf("dtg_active_format=%d\n", is->dtg_active_format);
365 }
366 #endif
367 #if 0
368 switch(is->video_st->codec.dtg_active_format) {
369 case FF_DTG_AFD_SAME:
370 default:
371 /* nothing to do */
372 break;
373 case FF_DTG_AFD_4_3:
374 aspect_ratio = 4.0 / 3.0;
375 break;
376 case FF_DTG_AFD_16_9:
377 aspect_ratio = 16.0 / 9.0;
378 break;
379 case FF_DTG_AFD_14_9:
380 aspect_ratio = 14.0 / 9.0;
381 break;
382 case FF_DTG_AFD_4_3_SP_14_9:
383 aspect_ratio = 14.0 / 9.0;
384 break;
385 case FF_DTG_AFD_16_9_SP_14_9:
386 aspect_ratio = 14.0 / 9.0;
387 break;
388 case FF_DTG_AFD_SP_4_3:
389 aspect_ratio = 4.0 / 3.0;
390 break;
391 }
392 #endif
393
394 /* XXX: we suppose the screen has a 1.0 pixel ratio */
395 height = is->height;
396 width = ((int)rint(height * aspect_ratio)) & -3;
397 if (width > is->width) {
398 width = is->width;
399 height = ((int)rint(width / aspect_ratio)) & -3;
400 }
401 x = (is->width - width) / 2;
402 y = (is->height - height) / 2;
403 if (!is->no_background) {
404 /* fill the background */
405 // fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
406 } else {
407 is->no_background = 0;
408 }
409 rect.x = is->xleft + x;
410 rect.y = is->xleft + y;
411 rect.w = width;
412 rect.h = height;
413 SDL_DisplayYUVOverlay(vp->bmp, &rect);
414 } else {
415 #if 0
416 fill_rectangle(screen,
417 is->xleft, is->ytop, is->width, is->height,
418 QERGB(0x00, 0x00, 0x00));
419 #endif
420 }
421 }
422
423 static inline int compute_mod(int a, int b)
424 {
425 a = a % b;
426 if (a >= 0)
427 return a;
428 else
429 return a + b;
430 }
431
432 static void video_audio_display(VideoState *s)
433 {
434 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
435 int ch, channels, h, h2, bgcolor, fgcolor;
436 int16_t time_diff;
437
438 /* compute display index : center on currently output samples */
439 channels = s->audio_st->codec.channels;
440 nb_display_channels = channels;
441 if (!s->paused) {
442 n = 2 * channels;
443 delay = audio_write_get_buf_size(s);
444 delay /= n;
445
446 /* to be more precise, we take into account the time spent since
447 the last buffer computation */
448 if (audio_callback_time) {
449 time_diff = av_gettime() - audio_callback_time;
450 delay += (time_diff * s->audio_st->codec.sample_rate) / 1000000;
451 }
452
453 delay -= s->width / 2;
454 if (delay < s->width)
455 delay = s->width;
456 i_start = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
457 s->last_i_start = i_start;
458 } else {
459 i_start = s->last_i_start;
460 }
461
462 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
463 fill_rectangle(screen,
464 s->xleft, s->ytop, s->width, s->height,
465 bgcolor);
466
467 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
468
469 /* total height for one channel */
470 h = s->height / nb_display_channels;
471 /* graph height / 2 */
472 h2 = (h * 9) / 20;
473 for(ch = 0;ch < nb_display_channels; ch++) {
474 i = i_start + ch;
475 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
476 for(x = 0; x < s->width; x++) {
477 y = (s->sample_array[i] * h2) >> 15;
478 if (y < 0) {
479 y = -y;
480 ys = y1 - y;
481 } else {
482 ys = y1;
483 }
484 fill_rectangle(screen,
485 s->xleft + x, ys, 1, y,
486 fgcolor);
487 i += channels;
488 if (i >= SAMPLE_ARRAY_SIZE)
489 i -= SAMPLE_ARRAY_SIZE;
490 }
491 }
492
493 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
494
495 for(ch = 1;ch < nb_display_channels; ch++) {
496 y = s->ytop + ch * h;
497 fill_rectangle(screen,
498 s->xleft, y, s->width, 1,
499 fgcolor);
500 }
501 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
502 }
503
504 /* display the current picture, if any */
505 static void video_display(VideoState *is)
506 {
507 if (is->audio_st && is->show_audio)
508 video_audio_display(is);
509 else if (is->video_st)
510 video_image_display(is);
511 }
512
513 static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
514 {
515 SDL_Event event;
516 event.type = FF_REFRESH_EVENT;
517 event.user.data1 = opaque;
518 SDL_PushEvent(&event);
519 return 0; /* 0 means stop timer */
520 }
521
522 /* schedule a video refresh in 'delay' ms */
523 static void schedule_refresh(VideoState *is, int delay)
524 {
525 SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
526 }
527
528 /* get the current audio clock value */
529 static double get_audio_clock(VideoState *is)
530 {
531 double pts;
532 int hw_buf_size, bytes_per_sec;
533 pts = is->audio_clock;
534 hw_buf_size = audio_write_get_buf_size(is);
535 bytes_per_sec = 0;
536 if (is->audio_st) {
537 bytes_per_sec = is->audio_st->codec.sample_rate *
538 2 * is->audio_st->codec.channels;
539 }
540 if (bytes_per_sec)
541 pts -= (double)hw_buf_size / bytes_per_sec;
542 return pts;
543 }
544
545 /* get the current video clock value */
546 static double get_video_clock(VideoState *is)
547 {
548 double delta;
549 if (is->paused) {
550 delta = 0;
551 } else {
552 delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
553 }
554 return is->video_current_pts + delta;
555 }
556
557 /* get the current external clock value */
558 static double get_external_clock(VideoState *is)
559 {
560 int64_t ti;
561 ti = av_gettime();
562 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
563 }
564
565 /* get the current master clock value */
566 static double get_master_clock(VideoState *is)
567 {
568 double val;
569
570 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
571 if (is->video_st)
572 val = get_video_clock(is);
573 else
574 val = get_audio_clock(is);
575 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
576 if (is->audio_st)
577 val = get_audio_clock(is);
578 else
579 val = get_video_clock(is);
580 } else {
581 val = get_external_clock(is);
582 }
583 return val;
584 }
585
586 /* seek in the stream */
587 static void stream_seek(VideoState *is, int64_t pos)
588 {
589 is->seek_pos = pos;
590 is->seek_req = 1;
591 }
592
593 /* pause or resume the video */
594 static void stream_pause(VideoState *is)
595 {
596 is->paused = !is->paused;
597 if (is->paused) {
598 is->video_current_pts = get_video_clock(is);
599 }
600 }
601
602 /* called to display each frame */
603 static void video_refresh_timer(void *opaque)
604 {
605 VideoState *is = opaque;
606 VideoPicture *vp;
607 double actual_delay, delay, sync_threshold, ref_clock, diff;
608
609
610 if (is->video_st) {
611 if (is->pictq_size == 0) {
612 /* if no picture, need to wait */
613 schedule_refresh(is, 40);
614 } else {
615 /* dequeue the picture */
616 vp = &is->pictq[is->pictq_rindex];
617
618 /* update current video pts */
619 is->video_current_pts = vp->pts;
620 is->video_current_pts_time = av_gettime();
621
622 /* compute nominal delay */
623 delay = vp->pts - is->frame_last_pts;
624 if (delay <= 0 || delay >= 1.0) {
625 /* if incorrect delay, use previous one */
626 delay = is->frame_last_delay;
627 }
628 is->frame_last_delay = delay;
629 is->frame_last_pts = vp->pts;
630
631 /* update delay to follow master synchronisation source */
632 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
633 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
634 /* if video is slave, we try to correct big delays by
635 duplicating or deleting a frame */
636 ref_clock = get_master_clock(is);
637 diff = vp->pts - ref_clock;
638
639 /* skip or repeat frame. We take into account the
640 delay to compute the threshold. I still don't know
641 if it is the best guess */
642 sync_threshold = AV_SYNC_THRESHOLD;
643 if (delay > sync_threshold)
644 sync_threshold = delay;
645 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
646 if (diff <= -sync_threshold)
647 delay = 0;
648 else if (diff >= sync_threshold)
649 delay = 2 * delay;
650 }
651 }
652
653 is->frame_timer += delay;
654 /* compute the REAL delay (we need to do that to avoid
655 long term errors */
656 actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
657 if (actual_delay < 0.010) {
658 /* XXX: should skip picture */
659 actual_delay = 0.010;
660 }
661 /* launch timer for next picture */
662 schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
663
664 #if defined(DEBUG_SYNC)
665 printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
666 delay, actual_delay, vp->pts, -diff);
667 #endif
668
669 /* display picture */
670 video_display(is);
671
672 /* update queue size and signal for next picture */
673 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
674 is->pictq_rindex = 0;
675
676 SDL_LockMutex(is->pictq_mutex);
677 is->pictq_size--;
678 SDL_CondSignal(is->pictq_cond);
679 SDL_UnlockMutex(is->pictq_mutex);
680 }
681 } else if (is->audio_st) {
682 /* draw the next audio frame */
683
684 schedule_refresh(is, 40);
685
686 /* if only audio stream, then display the audio bars (better
687 than nothing, just to test the implementation */
688
689 /* display picture */
690 video_display(is);
691 } else {
692 schedule_refresh(is, 100);
693 }
694 if (show_status) {
695 static int64_t last_time;
696 int64_t cur_time;
697 int aqsize, vqsize;
698 double av_diff;
699
700 cur_time = av_gettime();
701 if (!last_time || (cur_time - last_time) >= 500 * 1000) {
702 aqsize = 0;
703 vqsize = 0;
704 if (is->audio_st)
705 aqsize = is->audioq.size;
706 if (is->video_st)
707 vqsize = is->videoq.size;
708 av_diff = 0;
709 if (is->audio_st && is->video_st)
710 av_diff = get_audio_clock(is) - get_video_clock(is);
711 printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB \r",
712 get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024);
713 fflush(stdout);
714 last_time = cur_time;
715 }
716 }
717 }
718
719 /* allocate a picture (needs to do that in main thread to avoid
720 potential locking problems */
721 static void alloc_picture(void *opaque)
722 {
723 VideoState *is = opaque;
724 VideoPicture *vp;
725
726 vp = &is->pictq[is->pictq_windex];
727
728 if (vp->bmp)
729 SDL_FreeYUVOverlay(vp->bmp);
730
731 #if 0
732 /* XXX: use generic function */
733 /* XXX: disable overlay if no hardware acceleration or if RGB format */
734 switch(is->video_st->codec.pix_fmt) {
735 case PIX_FMT_YUV420P:
736 case PIX_FMT_YUV422P:
737 case PIX_FMT_YUV444P:
738 case PIX_FMT_YUV422:
739 case PIX_FMT_YUV410P:
740 case PIX_FMT_YUV411P:
741 is_yuv = 1;
742 break;
743 default:
744 is_yuv = 0;
745 break;
746 }
747 #endif
748 vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec.width,
749 is->video_st->codec.height,
750 SDL_YV12_OVERLAY,
751 screen);
752 vp->width = is->video_st->codec.width;
753 vp->height = is->video_st->codec.height;
754
755 SDL_LockMutex(is->pictq_mutex);
756 vp->allocated = 1;
757 SDL_CondSignal(is->pictq_cond);
758 SDL_UnlockMutex(is->pictq_mutex);
759 }
760
761 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
762 {
763 VideoPicture *vp;
764 int dst_pix_fmt;
765 AVPicture pict;
766
767 /* wait until we have space to put a new picture */
768 SDL_LockMutex(is->pictq_mutex);
769 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
770 !is->videoq.abort_request) {
771 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
772 }
773 SDL_UnlockMutex(is->pictq_mutex);
774
775 if (is->videoq.abort_request)
776 return -1;
777
778 vp = &is->pictq[is->pictq_windex];
779
780 /* alloc or resize hardware picture buffer */
781 if (!vp->bmp ||
782 vp->width != is->video_st->codec.width ||
783 vp->height != is->video_st->codec.height) {
784 SDL_Event event;
785
786 vp->allocated = 0;
787
788 /* the allocation must be done in the main thread to avoid
789 locking problems */
790 event.type = FF_ALLOC_EVENT;
791 event.user.data1 = is;
792 SDL_PushEvent(&event);
793
794 /* wait until the picture is allocated */
795 SDL_LockMutex(is->pictq_mutex);
796 while (!vp->allocated && !is->videoq.abort_request) {
797 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
798 }
799 SDL_UnlockMutex(is->pictq_mutex);
800
801 if (is->videoq.abort_request)
802 return -1;
803 }
804
805 /* if the frame is not skipped, then display it */
806 if (vp->bmp) {
807 /* get a pointer on the bitmap */
808 SDL_LockYUVOverlay (vp->bmp);
809
810 dst_pix_fmt = PIX_FMT_YUV420P;
811 pict.data[0] = vp->bmp->pixels[0];
812 pict.data[1] = vp->bmp->pixels[2];
813 pict.data[2] = vp->bmp->pixels[1];
814
815 pict.linesize[0] = vp->bmp->pitches[0];
816 pict.linesize[1] = vp->bmp->pitches[2];
817 pict.linesize[2] = vp->bmp->pitches[1];
818 img_convert(&pict, dst_pix_fmt,
819 (AVPicture *)src_frame, is->video_st->codec.pix_fmt,
820 is->video_st->codec.width, is->video_st->codec.height);
821 /* update the bitmap content */
822 SDL_UnlockYUVOverlay(vp->bmp);
823
824 vp->pts = pts;
825
826 /* now we can update the picture count */
827 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
828 is->pictq_windex = 0;
829 SDL_LockMutex(is->pictq_mutex);
830 is->pictq_size++;
831 SDL_UnlockMutex(is->pictq_mutex);
832 }
833 return 0;
834 }
835
836 /* compute the exact PTS for the picture if it is omitted in the stream */
837 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
838 {
839 double frame_delay, pts;
840
841 pts = pts1;
842
843 /* if B frames are present, and if the current picture is a I
844 or P frame, we use the last pts */
845 if (is->video_st->codec.has_b_frames &&
846 src_frame->pict_type != FF_B_TYPE) {
847 /* use last pts */
848 pts = is->video_last_P_pts;
849 /* get the pts for the next I or P frame if present */
850 is->video_last_P_pts = pts1;
851 }
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->pts != AV_NOPTS_VALUE)
903 pts = (double)pkt->pts / AV_TIME_BASE;
904
905 if (is->video_st->codec.codec_id == CODEC_ID_RAWVIDEO) {
906 avpicture_fill((AVPicture *)frame, pkt->data,
907 is->video_st->codec.pix_fmt,
908 is->video_st->codec.width,
909 is->video_st->codec.height);
910 frame->pict_type = FF_I_TYPE;
911 if (output_picture2(is, frame, pts) < 0)
912 goto the_end;
913 } else {
914 len1 = avcodec_decode_video(&is->video_st->codec,
915 frame, &got_picture,
916 pkt->data, pkt->size);
917 // if (len1 < 0)
918 // break;
919 if (got_picture) {
920 if (output_picture2(is, frame, pts) < 0)
921 goto the_end;
922 }
923 }
924 av_free_packet(pkt);
925 if (step)
926 if (cur_stream)
927 stream_pause(cur_stream);
928 }
929 the_end:
930 av_free(frame);
931 return 0;
932 }
933
934 /* copy samples for viewing in editor window */
935 static void update_sample_display(VideoState *is, short *samples, int samples_size)
936 {
937 int size, len, channels;
938
939 channels = is->audio_st->codec.channels;
940
941 size = samples_size / sizeof(short);
942 while (size > 0) {
943 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
944 if (len > size)
945 len = size;
946 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
947 samples += len;
948 is->sample_array_index += len;
949 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
950 is->sample_array_index = 0;
951 size -= len;
952 }
953 }
954
955 /* return the new audio buffer size (samples can be added or deleted
956 to get better sync if video or external master clock) */
957 static int synchronize_audio(VideoState *is, short *samples,
958 int samples_size1, double pts)
959 {
960 int n, samples_size;
961 double ref_clock;
962
963 n = 2 * is->audio_st->codec.channels;
964 samples_size = samples_size1;
965
966 /* if not master, then we try to remove or add samples to correct the clock */
967 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
968 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
969 double diff, avg_diff;
970 int wanted_size, min_size, max_size, nb_samples;
971
972 ref_clock = get_master_clock(is);
973 diff = get_audio_clock(is) - ref_clock;
974
975 if (diff < AV_NOSYNC_THRESHOLD) {
976 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
977 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
978 /* not enough measures to have a correct estimate */
979 is->audio_diff_avg_count++;
980 } else {
981 /* estimate the A-V difference */
982 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
983
984 if (fabs(avg_diff) >= is->audio_diff_threshold) {
985 wanted_size = samples_size + ((int)(diff * is->audio_st->codec.sample_rate) * n);
986 nb_samples = samples_size / n;
987
988 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
989 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
990 if (wanted_size < min_size)
991 wanted_size = min_size;
992 else if (wanted_size > max_size)
993 wanted_size = max_size;
994
995 /* add or remove samples to correction the synchro */
996 if (wanted_size < samples_size) {
997 /* remove samples */
998 samples_size = wanted_size;
999 } else if (wanted_size > samples_size) {
1000 uint8_t *samples_end, *q;
1001 int nb;
1002
1003 /* add samples */
1004 nb = (samples_size - wanted_size);
1005 samples_end = (uint8_t *)samples + samples_size - n;
1006 q = samples_end + n;
1007 while (nb > 0) {
1008 memcpy(q, samples_end, n);
1009 q += n;
1010 nb -= n;
1011 }
1012 samples_size = wanted_size;
1013 }
1014 }
1015 #if 0
1016 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1017 diff, avg_diff, samples_size - samples_size1,
1018 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1019 #endif
1020 }
1021 } else {
1022 /* too big difference : may be initial PTS errors, so
1023 reset A-V filter */
1024 is->audio_diff_avg_count = 0;
1025 is->audio_diff_cum = 0;
1026 }
1027 }
1028
1029 return samples_size;
1030 }
1031
1032 /* decode one audio frame and returns its uncompressed size */
1033 static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, double *pts_ptr)
1034 {
1035 AVPacket *pkt = &is->audio_pkt;
1036 int n, len1, data_size;
1037 double pts;
1038
1039 for(;;) {
1040 /* NOTE: the audio packet can contain several frames */
1041 while (is->audio_pkt_size > 0) {
1042 len1 = avcodec_decode_audio(&is->audio_st->codec,
1043 (int16_t *)audio_buf, &data_size,
1044 is->audio_pkt_data, is->audio_pkt_size);
1045 if (len1 < 0) {
1046 /* if error, we skip the frame */
1047 is->audio_pkt_size = 0;
1048 break;
1049 }
1050
1051 is->audio_pkt_data += len1;
1052 is->audio_pkt_size -= len1;
1053 if (data_size <= 0)
1054 continue;
1055 /* if no pts, then compute it */
1056 pts = is->audio_clock;
1057 *pts_ptr = pts;
1058 n = 2 * is->audio_st->codec.channels;
1059 is->audio_clock += (double)data_size /
1060 (double)(n * is->audio_st->codec.sample_rate);
1061 #if defined(DEBUG_SYNC)
1062 {
1063 static double last_clock;
1064 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1065 is->audio_clock - last_clock,
1066 is->audio_clock, pts);
1067 last_clock = is->audio_clock;
1068 }
1069 #endif
1070 return data_size;
1071 }
1072
1073 /* free the current packet */
1074 if (pkt->data)
1075 av_free_packet(pkt);
1076
1077 if (is->paused || is->audioq.abort_request) {
1078 return -1;
1079 }
1080
1081 /* read next packet */
1082 if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1083 return -1;
1084 is->audio_pkt_data = pkt->data;
1085 is->audio_pkt_size = pkt->size;
1086
1087 /* if update the audio clock with the pts */
1088 if (pkt->pts != AV_NOPTS_VALUE) {
1089 is->audio_clock = (double)pkt->pts / AV_TIME_BASE;
1090 }
1091 }
1092 }
1093
1094 /* get the current audio output buffer size, in samples. With SDL, we
1095 cannot have a precise information */
1096 static int audio_write_get_buf_size(VideoState *is)
1097 {
1098 return is->audio_hw_buf_size - is->audio_buf_index;
1099 }
1100
1101
1102 /* prepare a new audio buffer */
1103 void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1104 {
1105 VideoState *is = opaque;
1106 int audio_size, len1;
1107 double pts;
1108
1109 audio_callback_time = av_gettime();
1110
1111 while (len > 0) {
1112 if (is->audio_buf_index >= is->audio_buf_size) {
1113 audio_size = audio_decode_frame(is, is->audio_buf, &pts);
1114 if (audio_size < 0) {
1115 /* if error, just output silence */
1116 is->audio_buf_size = 1024;
1117 memset(is->audio_buf, 0, is->audio_buf_size);
1118 } else {
1119 if (is->show_audio)
1120 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1121 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
1122 pts);
1123 is->audio_buf_size = audio_size;
1124 }
1125 is->audio_buf_index = 0;
1126 }
1127 len1 = is->audio_buf_size - is->audio_buf_index;
1128 if (len1 > len)
1129 len1 = len;
1130 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1131 len -= len1;
1132 stream += len1;
1133 is->audio_buf_index += len1;
1134 }
1135 }
1136
1137
1138 /* open a given stream. Return 0 if OK */
1139 static int stream_component_open(VideoState *is, int stream_index)
1140 {
1141 AVFormatContext *ic = is->ic;
1142 AVCodecContext *enc;
1143 AVCodec *codec;
1144 SDL_AudioSpec wanted_spec, spec;
1145
1146 if (stream_index < 0 || stream_index >= ic->nb_streams)
1147 return -1;
1148 enc = &ic->streams[stream_index]->codec;
1149
1150 /* prepare audio output */
1151 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1152 wanted_spec.freq = enc->sample_rate;
1153 wanted_spec.format = AUDIO_S16SYS;
1154 /* hack for AC3. XXX: suppress that */
1155 if (enc->channels > 2)
1156 enc->channels = 2;
1157 wanted_spec.channels = enc->channels;
1158 wanted_spec.silence = 0;
1159 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1160 wanted_spec.callback = sdl_audio_callback;
1161 wanted_spec.userdata = is;
1162 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1163 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1164 return -1;
1165 }
1166 is->audio_hw_buf_size = spec.size;
1167 }
1168
1169 codec = avcodec_find_decoder(enc->codec_id);
1170 if (!codec ||
1171 avcodec_open(enc, codec) < 0)
1172 return -1;
1173 enc->debug = debug;
1174 #if defined(HAVE_PTHREADS) || defined(HAVE_W32THREADS)
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 enc->debug_mv = debug_mv;
1208 break;
1209 default:
1210 break;
1211 }
1212 return 0;
1213 }
1214
1215 static void stream_component_close(VideoState *is, int stream_index)
1216 {
1217 AVFormatContext *ic = is->ic;
1218 AVCodecContext *enc;
1219
1220 enc = &ic->streams[stream_index]->codec;
1221
1222 switch(enc->codec_type) {
1223 case CODEC_TYPE_AUDIO:
1224 packet_queue_abort(&is->audioq);
1225
1226 SDL_CloseAudio();
1227
1228 packet_queue_end(&is->audioq);
1229 break;
1230 case CODEC_TYPE_VIDEO:
1231 packet_queue_abort(&is->videoq);
1232
1233 /* note: we also signal this mutex to make sure we deblock the
1234 video thread in all cases */
1235 SDL_LockMutex(is->pictq_mutex);
1236 SDL_CondSignal(is->pictq_cond);
1237 SDL_UnlockMutex(is->pictq_mutex);
1238
1239 SDL_WaitThread(is->video_tid, NULL);
1240
1241 packet_queue_end(&is->videoq);
1242 break;
1243 default:
1244 break;
1245 }
1246
1247 avcodec_close(enc);
1248 switch(enc->codec_type) {
1249 case CODEC_TYPE_AUDIO:
1250 is->audio_st = NULL;
1251 is->audio_stream = -1;
1252 break;
1253 case CODEC_TYPE_VIDEO:
1254 is->video_st = NULL;
1255 is->video_stream = -1;
1256 break;
1257 default:
1258 break;
1259 }
1260 }
1261
1262 void dump_stream_info(AVFormatContext *s)
1263 {
1264 if (s->track != 0)
1265 fprintf(stderr, "Track: %d\n", s->track);
1266 if (s->title[0] != '\0')
1267 fprintf(stderr, "Title: %s\n", s->title);
1268 if (s->author[0] != '\0')
1269 fprintf(stderr, "Author: %s\n", s->author);
1270 if (s->album[0] != '\0')
1271 fprintf(stderr, "Album: %s\n", s->album);
1272 if (s->year != 0)
1273 fprintf(stderr, "Year: %d\n", s->year);
1274 if (s->genre[0] != '\0')
1275 fprintf(stderr, "Genre: %s\n", s->genre);
1276 }
1277
1278 /* since we have only one decoding thread, we can use a global
1279 variable instead of a thread local variable */
1280 static VideoState *global_video_state;
1281
1282 static int decode_interrupt_cb(void)
1283 {
1284 return (global_video_state && global_video_state->abort_request);
1285 }
1286
1287 /* this thread gets the stream from the disk or the network */
1288 static int decode_thread(void *arg)
1289 {
1290 VideoState *is = arg;
1291 AVFormatContext *ic;
1292 int err, i, ret, video_index, audio_index, use_play;
1293 AVPacket pkt1, *pkt = &pkt1;
1294 AVFormatParameters params, *ap = &params;
1295
1296 video_index = -1;
1297 audio_index = -1;
1298 is->video_stream = -1;
1299 is->audio_stream = -1;
1300
1301 global_video_state = is;
1302 url_set_interrupt_cb(decode_interrupt_cb);
1303
1304 memset(ap, 0, sizeof(*ap));
1305 ap->image_format = image_format;
1306 ap->initial_pause = 1; /* we force a pause when starting an RTSP
1307 stream */
1308
1309 err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
1310 if (err < 0) {
1311 print_error(is->filename, err);
1312 ret = -1;
1313 goto fail;
1314 }
1315 is->ic = ic;
1316 #ifdef CONFIG_NETWORK
1317 use_play = (ic->iformat == &rtsp_demux);
1318 #else
1319 use_play = 0;
1320 #endif
1321 if (!use_play) {
1322 err = av_find_stream_info(ic);
1323 if (err < 0) {
1324 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1325 ret = -1;
1326 goto fail;
1327 }
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);
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);
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 avcodec_flush_buffers(&ic->streams[video_index]->codec);
1425 }
1426 }
1427 is->seek_req = 0;
1428 }
1429
1430 /* if the queue are full, no need to read more */
1431 if (is->audioq.size > MAX_AUDIOQ_SIZE ||
1432 is->videoq.size > MAX_VIDEOQ_SIZE ||
1433 url_feof(&ic->pb)) {
1434 /* wait 10 ms */
1435 SDL_Delay(10);
1436 continue;
1437 }
1438 ret = av_read_frame(ic, pkt);
1439 if (ret < 0) {
1440 break;
1441 }
1442 if (pkt->stream_index == is->audio_stream) {
1443 packet_queue_put(&is->audioq, pkt);
1444 } else if (pkt->stream_index == is->video_stream) {
1445 packet_queue_put(&is->videoq, pkt);
1446 } else {
1447 av_free_packet(pkt);
1448 }
1449 }
1450 /* wait until the end */
1451 while (!is->abort_request) {
1452 SDL_Delay(100);
1453 }
1454
1455 ret = 0;
1456 fail:
1457 /* disable interrupting */
1458 global_video_state = NULL;
1459
1460 /* close each stream */
1461 if (is->audio_stream >= 0)
1462 stream_component_close(is, is->audio_stream);
1463 if (is->video_stream >= 0)
1464 stream_component_close(is, is->video_stream);
1465 if (is->ic) {
1466 av_close_input_file(is->ic);
1467 is->ic = NULL; /* safety */
1468 }
1469 url_set_interrupt_cb(NULL);
1470
1471 if (ret != 0) {
1472 SDL_Event event;
1473
1474 event.type = FF_QUIT_EVENT;
1475 event.user.data1 = is;
1476 SDL_PushEvent(&event);
1477 }
1478 return 0;
1479 }
1480
1481 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
1482 {
1483 VideoState *is;
1484
1485 is = av_mallocz(sizeof(VideoState));
1486 if (!is)
1487 return NULL;
1488 pstrcpy(is->filename, sizeof(is->filename), filename);
1489 is->iformat = iformat;
1490 if (screen) {
1491 is->width = screen->w;
1492 is->height = screen->h;
1493 }
1494 is->ytop = 0;
1495 is->xleft = 0;
1496
1497 /* start video display */
1498 is->pictq_mutex = SDL_CreateMutex();
1499 is->pictq_cond = SDL_CreateCond();
1500
1501 /* add the refresh timer to draw the picture */
1502 schedule_refresh(is, 40);
1503
1504 is->av_sync_type = av_sync_type;
1505 is->parse_tid = SDL_CreateThread(decode_thread, is);
1506 if (!is->parse_tid) {
1507 av_free(is);
1508 return NULL;
1509 }
1510 return is;
1511 }
1512
1513 static void stream_close(VideoState *is)
1514 {
1515 VideoPicture *vp;
1516 int i;
1517 /* XXX: use a special url_shutdown call to abort parse cleanly */
1518 is->abort_request = 1;
1519 SDL_WaitThread(is->parse_tid, NULL);
1520
1521 /* free all pictures */
1522 for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
1523 vp = &is->pictq[i];
1524 if (vp->bmp) {
1525 SDL_FreeYUVOverlay(vp->bmp);
1526 vp->bmp = NULL;
1527 }
1528 }
1529 SDL_DestroyMutex(is->pictq_mutex);
1530 SDL_DestroyCond(is->pictq_cond);
1531 }
1532
1533 void stream_cycle_channel(VideoState *is, int codec_type)
1534 {
1535 AVFormatContext *ic = is->ic;
1536 int start_index, stream_index;
1537 AVStream *st;
1538
1539 if (codec_type == CODEC_TYPE_VIDEO)
1540 start_index = is->video_stream;
1541 else
1542 start_index = is->audio_stream;
1543 if (start_index < 0)
1544 return;
1545 stream_index = start_index;
1546 for(;;) {
1547 if (++stream_index >= is->ic->nb_streams)
1548 stream_index = 0;
1549 if (stream_index == start_index)
1550 return;
1551 st = ic->streams[stream_index];
1552 if (st->codec.codec_type == codec_type) {
1553 /* check that parameters are OK */
1554 switch(codec_type) {
1555 case CODEC_TYPE_AUDIO:
1556 if (st->codec.sample_rate != 0 &&
1557 st->codec.channels != 0)
1558 goto the_end;
1559 break;
1560 case CODEC_TYPE_VIDEO:
1561 goto the_end;
1562 default:
1563 break;
1564 }
1565 }
1566 }
1567 the_end:
1568 stream_component_close(is, start_index);
1569 stream_component_open(is, stream_index);
1570 }
1571
1572
1573 void toggle_full_screen(void)
1574 {
1575 int w, h, flags;
1576 is_full_screen = !is_full_screen;
1577 if (!fs_screen_width) {
1578 /* use default SDL method */
1579 SDL_WM_ToggleFullScreen(screen);
1580 } else {
1581 /* use the recorded resolution */
1582 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1583 if (is_full_screen) {
1584 w = fs_screen_width;
1585 h = fs_screen_height;
1586 flags |= SDL_FULLSCREEN;
1587 } else {
1588 w = screen_width;
1589 h = screen_height;
1590 flags |= SDL_RESIZABLE;
1591 }
1592 screen = SDL_SetVideoMode(w, h, 0, flags);
1593 cur_stream->width = w;
1594 cur_stream->height = h;
1595 }
1596 }
1597
1598 void toggle_pause(void)
1599 {
1600 if (cur_stream)
1601 stream_pause(cur_stream);
1602 step = 0;
1603 }
1604
1605 void step_to_next_frame(void)
1606 {
1607 if (cur_stream) {
1608 if (cur_stream->paused)
1609 cur_stream->paused=0;
1610 cur_stream->video_current_pts = get_video_clock(cur_stream);
1611 }
1612 step = 1;
1613 }
1614
1615 void do_exit(void)
1616 {
1617 if (cur_stream) {
1618 stream_close(cur_stream);
1619 cur_stream = NULL;
1620 }
1621 if (show_status)
1622 printf("\n");
1623 SDL_Quit();
1624 exit(0);
1625 }
1626
1627 void toggle_audio_display(void)
1628 {
1629 if (cur_stream) {
1630 cur_stream->show_audio = !cur_stream->show_audio;
1631 }
1632 }
1633
1634 /* handle an event sent by the GUI */
1635 void event_loop(void)
1636 {
1637 SDL_Event event;
1638 double incr, pos, frac;
1639
1640 for(;;) {
1641 SDL_WaitEvent(&event);
1642 switch(event.type) {
1643 case SDL_KEYDOWN:
1644 switch(event.key.keysym.sym) {
1645 case SDLK_ESCAPE:
1646 case SDLK_q:
1647 do_exit();
1648 break;
1649 case SDLK_f:
1650 toggle_full_screen();
1651 break;
1652 case SDLK_p:
1653 case SDLK_SPACE:
1654 toggle_pause();
1655 break;
1656 case SDLK_s: //S: Step to next frame
1657 step_to_next_frame();
1658 break;
1659 case SDLK_a:
1660 if (cur_stream)
1661 stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
1662 break;
1663 case SDLK_v:
1664 if (cur_stream)
1665 stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
1666 break;
1667 case SDLK_w:
1668 toggle_audio_display();
1669 break;
1670 case SDLK_LEFT:
1671 incr = -10.0;
1672 goto do_seek;
1673 case SDLK_RIGHT:
1674 incr = 10.0;
1675 goto do_seek;
1676 case SDLK_UP:
1677 incr = 60.0;
1678 goto do_seek;
1679 case SDLK_DOWN:
1680 incr = -60.0;
1681 do_seek:
1682 if (cur_stream) {
1683 pos = get_master_clock(cur_stream);
1684 pos += incr;
1685 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE));
1686 }
1687 break;
1688 default:
1689 break;
1690 }
1691 break;
1692 case SDL_MOUSEBUTTONDOWN:
1693 if (cur_stream) {
1694 int ns, hh, mm, ss;
1695 int tns, thh, tmm, tss;
1696 tns = cur_stream->ic->duration/1000000LL;
1697 thh = tns/3600;
1698 tmm = (tns%3600)/60;
1699 tss = (tns%60);
1700 frac = (double)event.button.x/(double)cur_stream->width;
1701 ns = frac*tns;
1702 hh = ns/3600;
1703 mm = (ns%3600)/60;
1704 ss = (ns%60);
1705 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
1706 hh, mm, ss, thh, tmm, tss);
1707 stream_seek(cur_stream, (int64_t)(cur_stream->ic->start_time+frac*cur_stream->ic->duration));
1708 }
1709 break;
1710 case SDL_VIDEORESIZE:
1711 if (cur_stream) {
1712 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
1713 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
1714 cur_stream->width = event.resize.w;
1715 cur_stream->height = event.resize.h;
1716 }
1717 break;
1718 case SDL_QUIT:
1719 case FF_QUIT_EVENT:
1720 do_exit();
1721 break;
1722 case FF_ALLOC_EVENT:
1723 alloc_picture(event.user.data1);
1724 break;
1725 case FF_REFRESH_EVENT:
1726 video_refresh_timer(event.user.data1);
1727 break;
1728 default:
1729 break;
1730 }
1731 }
1732 }
1733
1734 void opt_width(const char *arg)
1735 {
1736 screen_width = atoi(arg);
1737 }
1738
1739 void opt_height(const char *arg)
1740 {
1741 screen_height = atoi(arg);
1742 }
1743
1744 static void opt_format(const char *arg)
1745 {
1746 file_iformat = av_find_input_format(arg);
1747 if (!file_iformat) {
1748 fprintf(stderr, "Unknown input format: %s\n", arg);
1749 exit(1);
1750 }
1751 }
1752
1753 static void opt_image_format(const char *arg)
1754 {
1755 AVImageFormat *f;
1756
1757 for(f = first_image_format; f != NULL; f = f->next) {
1758 if (!strcmp(arg, f->name))
1759 break;
1760 }
1761 if (!f) {
1762 fprintf(stderr, "Unknown image format: '%s'\n", arg);
1763 exit(1);
1764 }
1765 image_format = f;
1766 }
1767
1768 #ifdef CONFIG_NETWORK
1769 void opt_rtp_tcp(void)
1770 {
1771 /* only tcp protocol */
1772 rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
1773 }
1774 #endif
1775
1776 void opt_sync(const char *arg)
1777 {
1778 if (!strcmp(arg, "audio"))
1779 av_sync_type = AV_SYNC_AUDIO_MASTER;
1780 else if (!strcmp(arg, "video"))
1781 av_sync_type = AV_SYNC_VIDEO_MASTER;
1782 else if (!strcmp(arg, "ext"))
1783 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
1784 else
1785 show_help();
1786 }
1787
1788 void opt_seek(const char *arg)
1789 {
1790 start_time = parse_date(arg, 1);
1791 }
1792
1793 static void opt_debug(const char *arg)
1794 {
1795 debug = atoi(arg);
1796 }
1797
1798 static void opt_vismv(const char *arg)
1799 {
1800 debug_mv = atoi(arg);
1801 }
1802
1803 static void opt_thread_count(const char *arg)
1804 {
1805 thread_count= atoi(arg);
1806 #if !defined(HAVE_PTHREADS) && !defined(HAVE_W32THREADS)
1807 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
1808 #endif
1809 }
1810
1811 const OptionDef options[] = {
1812 { "h", 0, {(void*)show_help}, "show help" },
1813 { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
1814 { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
1815 #if 0
1816 /* disabled as SDL/X11 does not support it correctly on application launch */
1817 { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
1818 #endif
1819 { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
1820 { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
1821 { "ss", HAS_ARG, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
1822 { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
1823 { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
1824 { "img", HAS_ARG, {(void*)opt_image_format}, "force image format", "img_fmt" },
1825 { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
1826 { "debug", HAS_ARG | OPT_EXPERT, {(void*)opt_debug}, "print specific debug info", "" },
1827 { "vismv", HAS_ARG | OPT_EXPERT, {(void*)opt_vismv}, "visualize motion vectors", "" },
1828 #ifdef CONFIG_NETWORK
1829 { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
1830 #endif
1831 { "sync", HAS_ARG | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
1832 { "threads", HAS_ARG | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
1833 { NULL, },
1834 };
1835
1836 void show_help(void)
1837 {
1838 printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
1839 "usage: ffplay [options] input_file\n"
1840 "Simple media player\n");
1841 printf("\n");
1842 show_help_options(options, "Main options:\n",
1843 OPT_EXPERT, 0);
1844 show_help_options(options, "\nAdvanced options:\n",
1845 OPT_EXPERT, OPT_EXPERT);
1846 printf("\nWhile playing:\n"
1847 "q, ESC quit\n"
1848 "f toggle full screen\n"
1849 "p, SPC pause\n"
1850 "a cycle audio channel\n"
1851 "v cycle video channel\n"
1852 "w show audio waves\n"
1853 "left/right seek backward/forward 10 seconds\n"
1854 "down/up seek backward/forward 1 minute\n"
1855 "mouse click seek to percentage in file corresponding to fraction of width\n"
1856 );
1857 exit(1);
1858 }
1859
1860 void parse_arg_file(const char *filename)
1861 {
1862 if (!strcmp(filename, "-"))
1863 filename = "pipe:";
1864 input_filename = filename;
1865 }
1866
1867 /* Called from the main */
1868 int main(int argc, char **argv)
1869 {
1870 int flags, w, h;
1871
1872 /* register all codecs, demux and protocols */
1873 av_register_all();
1874
1875 parse_options(argc, argv, options);
1876
1877 if (!input_filename)
1878 show_help();
1879
1880 if (display_disable) {
1881 video_disable = 1;
1882 }
1883 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
1884 #ifndef CONFIG_WIN32
1885 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 */
1886 #endif
1887 if (SDL_Init (flags)) {
1888 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
1889 exit(1);
1890 }
1891
1892 if (!display_disable) {
1893 #ifdef HAVE_X11
1894 /* save the screen resolution... SDL should allow full screen
1895 by resizing the window */
1896 {
1897 Display *dpy;
1898 dpy = XOpenDisplay(NULL);
1899 if (dpy) {
1900 fs_screen_width = DisplayWidth(dpy, DefaultScreen(dpy));
1901 fs_screen_height = DisplayHeight(dpy, DefaultScreen(dpy));
1902 XCloseDisplay(dpy);
1903 }
1904 }
1905 #endif
1906 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1907 if (is_full_screen && fs_screen_width) {
1908 w = fs_screen_width;
1909 h = fs_screen_height;
1910 flags |= SDL_FULLSCREEN;
1911 } else {
1912 w = screen_width;
1913 h = screen_height;
1914 flags |= SDL_RESIZABLE;
1915 }
1916 screen = SDL_SetVideoMode(w, h, 0, flags);
1917 if (!screen) {
1918 fprintf(stderr, "SDL: could not set video mode - exiting\n");
1919 exit(1);
1920 }
1921 SDL_WM_SetCaption("FFplay", "FFplay");
1922 }
1923
1924 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
1925 SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
1926 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
1927 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
1928
1929 cur_stream = stream_open(input_filename, file_iformat);
1930
1931 event_loop();
1932
1933 /* never returns */
1934
1935 return 0;
1936 }