f388c85c4dde5577b6379dfd22af82a14af5e1e8
[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 "common.h"
21 #include "avformat.h"
22
23 #include "cmdutils.h"
24
25 #include <SDL.h>
26 #include <SDL_thread.h>
27
28 #ifdef CONFIG_WIN32
29 #undef main /* We don't want SDL to override our main() */
30 #endif
31
32 #if defined(__linux__)
33 #define HAVE_X11
34 #endif
35
36 #ifdef HAVE_X11
37 #include <X11/Xlib.h>
38 #endif
39
40 //#define DEBUG_SYNC
41
42 #define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
43 #define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
44
45 /* SDL audio buffer size, in samples. Should be small to have precise
46 A/V sync as SDL does not have hardware buffer fullness info. */
47 #define SDL_AUDIO_BUFFER_SIZE 1024
48
49 /* no AV sync correction is done if below the AV sync threshold */
50 #define AV_SYNC_THRESHOLD 0.08
51 /* no AV correction is done if too big error */
52 #define AV_NOSYNC_THRESHOLD 10.0
53
54 /* maximum audio speed change to get correct sync */
55 #define SAMPLE_CORRECTION_PERCENT_MAX 10
56
57 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
58 #define AUDIO_DIFF_AVG_NB 20
59
60 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
61 #define SAMPLE_ARRAY_SIZE (2*65536)
62
63 typedef struct PacketQueue {
64 AVPacketList *first_pkt, *last_pkt;
65 int nb_packets;
66 int size;
67 int abort_request;
68 SDL_mutex *mutex;
69 SDL_cond *cond;
70 } PacketQueue;
71
72 #define VIDEO_PICTURE_QUEUE_SIZE 1
73
74 typedef struct VideoPicture {
75 double pts; /* presentation time stamp for this picture */
76 SDL_Overlay *bmp;
77 int width, height; /* source height & width */
78 int allocated;
79 } VideoPicture;
80
81 enum {
82 AV_SYNC_AUDIO_MASTER, /* default choice */
83 AV_SYNC_VIDEO_MASTER,
84 AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
85 };
86
87 typedef struct VideoState {
88 SDL_Thread *parse_tid;
89 SDL_Thread *video_tid;
90 AVInputFormat *iformat;
91 int no_background;
92 int abort_request;
93 int paused;
94 int last_paused;
95 AVFormatContext *ic;
96 int dtg_active_format;
97
98 int audio_stream;
99
100 int av_sync_type;
101 double external_clock; /* external clock base */
102 int64_t external_clock_time;
103
104 double audio_clock;
105 double audio_diff_cum; /* used for AV difference average computation */
106 double audio_diff_avg_coef;
107 double audio_diff_threshold;
108 int audio_diff_avg_count;
109 AVStream *audio_st;
110 PacketQueue audioq;
111 int audio_hw_buf_size;
112 /* samples output by the codec. we reserve more space for avsync
113 compensation */
114 uint8_t audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
115 int audio_buf_size; /* in bytes */
116 int audio_buf_index; /* in bytes */
117 AVPacket audio_pkt;
118 uint8_t *audio_pkt_data;
119 int audio_pkt_size;
120 int64_t audio_pkt_ipts;
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 int64_t ipts;
135 int picture_start; /* true if picture starts */
136 double video_last_P_pts; /* pts of the last P picture (needed if B
137 frames are present) */
138 double video_current_pts; /* current displayed pts (different from
139 video_clock if frame fifos are used) */
140 int64_t video_current_pts_time; /* time at which we updated
141 video_current_pts - used to
142 have running video pts */
143 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
144 int pictq_size, pictq_rindex, pictq_windex;
145 SDL_mutex *pictq_mutex;
146 SDL_cond *pictq_cond;
147
148 // QETimer *video_timer;
149 char filename[1024];
150 int width, height, xleft, ytop;
151 } VideoState;
152
153 void show_help(void);
154 static int audio_write_get_buf_size(VideoState *is);
155
156 /* options specified by the user */
157 static AVInputFormat *file_iformat;
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
169 /* current context */
170 static int is_full_screen;
171 static VideoState *cur_stream;
172 static int64_t audio_callback_time;
173
174 #define FF_ALLOC_EVENT (SDL_USEREVENT)
175 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
176 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
177
178 SDL_Surface *screen;
179
180 /* packet queue handling */
181 static void packet_queue_init(PacketQueue *q)
182 {
183 memset(q, 0, sizeof(PacketQueue));
184 q->mutex = SDL_CreateMutex();
185 q->cond = SDL_CreateCond();
186 }
187
188 static void packet_queue_end(PacketQueue *q)
189 {
190 AVPacketList *pkt, *pkt1;
191
192 for(pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
193 pkt1 = pkt->next;
194 av_free_packet(&pkt->pkt);
195 }
196 SDL_DestroyMutex(q->mutex);
197 SDL_DestroyCond(q->cond);
198 }
199
200 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
201 {
202 AVPacketList *pkt1;
203
204 pkt1 = av_malloc(sizeof(AVPacketList));
205 if (!pkt1)
206 return -1;
207 pkt1->pkt = *pkt;
208 pkt1->next = NULL;
209
210 SDL_LockMutex(q->mutex);
211
212 if (!q->last_pkt)
213
214 q->first_pkt = pkt1;
215 else
216 q->last_pkt->next = pkt1;
217 q->last_pkt = pkt1;
218 q->nb_packets++;
219 q->size += pkt1->pkt.size;
220 /* XXX: should duplicate packet data in DV case */
221 SDL_CondSignal(q->cond);
222
223 SDL_UnlockMutex(q->mutex);
224 return 0;
225 }
226
227 static void packet_queue_abort(PacketQueue *q)
228 {
229 SDL_LockMutex(q->mutex);
230
231 q->abort_request = 1;
232
233 SDL_CondSignal(q->cond);
234
235 SDL_UnlockMutex(q->mutex);
236 }
237
238 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
239 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
240 {
241 AVPacketList *pkt1;
242 int ret;
243
244 SDL_LockMutex(q->mutex);
245
246 for(;;) {
247 if (q->abort_request) {
248 ret = -1;
249 break;
250 }
251
252 pkt1 = q->first_pkt;
253 if (pkt1) {
254 q->first_pkt = pkt1->next;
255 if (!q->first_pkt)
256 q->last_pkt = NULL;
257 q->nb_packets--;
258 q->size -= pkt1->pkt.size;
259 *pkt = pkt1->pkt;
260 av_free(pkt1);
261 ret = 1;
262 break;
263 } else if (!block) {
264 ret = 0;
265 break;
266 } else {
267 SDL_CondWait(q->cond, q->mutex);
268 }
269 }
270 SDL_UnlockMutex(q->mutex);
271 return ret;
272 }
273
274 static inline void fill_rectangle(SDL_Surface *screen,
275 int x, int y, int w, int h, int color)
276 {
277 SDL_Rect rect;
278 rect.x = x;
279 rect.y = y;
280 rect.w = w;
281 rect.h = h;
282 SDL_FillRect(screen, &rect, color);
283 }
284
285 #if 0
286 /* draw only the border of a rectangle */
287 void fill_border(VideoState *s, int x, int y, int w, int h, int color)
288 {
289 int w1, w2, h1, h2;
290
291 /* fill the background */
292 w1 = x;
293 if (w1 < 0)
294 w1 = 0;
295 w2 = s->width - (x + w);
296 if (w2 < 0)
297 w2 = 0;
298 h1 = y;
299 if (h1 < 0)
300 h1 = 0;
301 h2 = s->height - (y + h);
302 if (h2 < 0)
303 h2 = 0;
304 fill_rectangle(screen,
305 s->xleft, s->ytop,
306 w1, s->height,
307 color);
308 fill_rectangle(screen,
309 s->xleft + s->width - w2, s->ytop,
310 w2, s->height,
311 color);
312 fill_rectangle(screen,
313 s->xleft + w1, s->ytop,
314 s->width - w1 - w2, h1,
315 color);
316 fill_rectangle(screen,
317 s->xleft + w1, s->ytop + s->height - h2,
318 s->width - w1 - w2, h2,
319 color);
320 }
321 #endif
322
323 static void video_image_display(VideoState *is)
324 {
325 VideoPicture *vp;
326 float aspect_ratio;
327 int width, height, x, y;
328 SDL_Rect rect;
329
330 vp = &is->pictq[is->pictq_rindex];
331 if (vp->bmp) {
332 /* XXX: use variable in the frame */
333 aspect_ratio = is->video_st->codec.aspect_ratio;
334 if (aspect_ratio <= 0.0)
335 aspect_ratio = (float)is->video_st->codec.width /
336 (float)is->video_st->codec.height;
337 /* if an active format is indicated, then it overrides the
338 mpeg format */
339 #if 0
340 if (is->video_st->codec.dtg_active_format != is->dtg_active_format) {
341 is->dtg_active_format = is->video_st->codec.dtg_active_format;
342 printf("dtg_active_format=%d\n", is->dtg_active_format);
343 }
344 #endif
345 #if 0
346 switch(is->video_st->codec.dtg_active_format) {
347 case FF_DTG_AFD_SAME:
348 default:
349 /* nothing to do */
350 break;
351 case FF_DTG_AFD_4_3:
352 aspect_ratio = 4.0 / 3.0;
353 break;
354 case FF_DTG_AFD_16_9:
355 aspect_ratio = 16.0 / 9.0;
356 break;
357 case FF_DTG_AFD_14_9:
358 aspect_ratio = 14.0 / 9.0;
359 break;
360 case FF_DTG_AFD_4_3_SP_14_9:
361 aspect_ratio = 14.0 / 9.0;
362 break;
363 case FF_DTG_AFD_16_9_SP_14_9:
364 aspect_ratio = 14.0 / 9.0;
365 break;
366 case FF_DTG_AFD_SP_4_3:
367 aspect_ratio = 4.0 / 3.0;
368 break;
369 }
370 #endif
371
372 /* XXX: we suppose the screen has a 1.0 pixel ratio */
373 height = is->height;
374 width = ((int)rint(height * aspect_ratio)) & -3;
375 if (width > is->width) {
376 width = is->width;
377 height = ((int)rint(width / aspect_ratio)) & -3;
378 }
379 x = (is->width - width) / 2;
380 y = (is->height - height) / 2;
381 if (!is->no_background) {
382 /* fill the background */
383 // fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
384 } else {
385 is->no_background = 0;
386 }
387 rect.x = is->xleft + x;
388 rect.y = is->xleft + y;
389 rect.w = width;
390 rect.h = height;
391 SDL_DisplayYUVOverlay(vp->bmp, &rect);
392 } else {
393 #if 0
394 fill_rectangle(screen,
395 is->xleft, is->ytop, is->width, is->height,
396 QERGB(0x00, 0x00, 0x00));
397 #endif
398 }
399 }
400
401 static inline int compute_mod(int a, int b)
402 {
403 a = a % b;
404 if (a >= 0)
405 return a;
406 else
407 return a + b;
408 }
409
410 static void video_audio_display(VideoState *s)
411 {
412 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
413 int ch, channels, h, h2, bgcolor, fgcolor;
414 int16_t time_diff;
415
416 /* compute display index : center on currently output samples */
417 channels = s->audio_st->codec.channels;
418 nb_display_channels = channels;
419 if (!s->paused) {
420 n = 2 * channels;
421 delay = audio_write_get_buf_size(s);
422 delay /= n;
423
424 /* to be more precise, we take into account the time spent since
425 the last buffer computation */
426 if (audio_callback_time) {
427 time_diff = av_gettime() - audio_callback_time;
428 delay += (time_diff * s->audio_st->codec.sample_rate) / 1000000;
429 }
430
431 delay -= s->width / 2;
432 if (delay < s->width)
433 delay = s->width;
434 i_start = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
435 s->last_i_start = i_start;
436 } else {
437 i_start = s->last_i_start;
438 }
439
440 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
441 fill_rectangle(screen,
442 s->xleft, s->ytop, s->width, s->height,
443 bgcolor);
444
445 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
446
447 /* total height for one channel */
448 h = s->height / nb_display_channels;
449 /* graph height / 2 */
450 h2 = (h * 9) / 20;
451 for(ch = 0;ch < nb_display_channels; ch++) {
452 i = i_start + ch;
453 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
454 for(x = 0; x < s->width; x++) {
455 y = (s->sample_array[i] * h2) >> 15;
456 if (y < 0) {
457 y = -y;
458 ys = y1 - y;
459 } else {
460 ys = y1;
461 }
462 fill_rectangle(screen,
463 s->xleft + x, ys, 1, y,
464 fgcolor);
465 i += channels;
466 if (i >= SAMPLE_ARRAY_SIZE)
467 i -= SAMPLE_ARRAY_SIZE;
468 }
469 }
470
471 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
472
473 for(ch = 1;ch < nb_display_channels; ch++) {
474 y = s->ytop + ch * h;
475 fill_rectangle(screen,
476 s->xleft, y, s->width, 1,
477 fgcolor);
478 }
479 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
480 }
481
482 /* display the current picture, if any */
483 static void video_display(VideoState *is)
484 {
485 if (is->audio_st && is->show_audio)
486 video_audio_display(is);
487 else if (is->video_st)
488 video_image_display(is);
489 }
490
491 static Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
492 {
493 SDL_Event event;
494 event.type = FF_REFRESH_EVENT;
495 event.user.data1 = opaque;
496 SDL_PushEvent(&event);
497 return 0; /* 0 means stop timer */
498 }
499
500 /* schedule a video refresh in 'delay' ms */
501 static void schedule_refresh(VideoState *is, int delay)
502 {
503 SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
504 }
505
506 /* get the current audio clock value */
507 static double get_audio_clock(VideoState *is)
508 {
509 double pts;
510 int hw_buf_size, bytes_per_sec;
511 pts = is->audio_clock;
512 hw_buf_size = audio_write_get_buf_size(is);
513 bytes_per_sec = 0;
514 if (is->audio_st) {
515 bytes_per_sec = is->audio_st->codec.sample_rate *
516 2 * is->audio_st->codec.channels;
517 }
518 if (bytes_per_sec)
519 pts -= (double)hw_buf_size / bytes_per_sec;
520 return pts;
521 }
522
523 /* get the current video clock value */
524 static double get_video_clock(VideoState *is)
525 {
526 double delta;
527 delta = (av_gettime() - is->video_current_pts_time) / 1000000.0;
528 return is->video_current_pts + delta;
529 }
530
531 /* get the current external clock value */
532 static double get_external_clock(VideoState *is)
533 {
534 int64_t ti;
535 ti = av_gettime();
536 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
537 }
538
539 /* get the current master clock value */
540 static double get_master_clock(VideoState *is)
541 {
542 double val;
543
544 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st)
545 val = get_video_clock(is);
546 else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st)
547 val = get_audio_clock(is);
548 else
549 val = get_external_clock(is);
550 return val;
551 }
552
553 /* called to display each frame */
554 static void video_refresh_timer(void *opaque)
555 {
556 VideoState *is = opaque;
557 VideoPicture *vp;
558 double actual_delay, delay, sync_threshold, ref_clock, diff;
559
560
561 if (is->video_st) {
562 if (is->pictq_size == 0) {
563 /* if no picture, need to wait */
564 schedule_refresh(is, 40);
565 } else {
566 /* dequeue the picture */
567 vp = &is->pictq[is->pictq_rindex];
568
569 /* update current video pts */
570 is->video_current_pts = vp->pts;
571 is->video_current_pts_time = av_gettime();
572
573 /* compute nominal delay */
574 delay = vp->pts - is->frame_last_pts;
575 if (delay <= 0 || delay >= 1.0) {
576 /* if incorrect delay, use previous one */
577 delay = is->frame_last_delay;
578 }
579 is->frame_last_delay = delay;
580 is->frame_last_pts = vp->pts;
581
582 /* update delay to follow master synchronisation source */
583 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
584 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
585 /* if video is slave, we try to correct big delays by
586 duplicating or deleting a frame */
587 ref_clock = get_master_clock(is);
588 diff = vp->pts - ref_clock;
589
590 /* skip or repeat frame. We take into account the
591 delay to compute the threshold. I still don't know
592 if it is the best guess */
593 sync_threshold = AV_SYNC_THRESHOLD;
594 if (delay > sync_threshold)
595 sync_threshold = delay;
596 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
597 if (diff <= -sync_threshold)
598 delay = 0;
599 else if (diff >= sync_threshold)
600 delay = 2 * delay;
601 }
602 }
603
604 is->frame_timer += delay;
605 /* compute the REAL delay (we need to do that to avoid
606 long term errors */
607 actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
608 if (actual_delay < 0.010) {
609 /* XXX: should skip picture */
610 actual_delay = 0.010;
611 }
612 /* launch timer for next picture */
613 schedule_refresh(is, (int)(actual_delay * 1000 + 0.5));
614
615 #if defined(DEBUG_SYNC)
616 printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
617 delay, actual_delay, vp->pts, -diff);
618 #endif
619
620 /* display picture */
621 video_display(is);
622
623 /* update queue size and signal for next picture */
624 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
625 is->pictq_rindex = 0;
626
627 SDL_LockMutex(is->pictq_mutex);
628 is->pictq_size--;
629 SDL_CondSignal(is->pictq_cond);
630 SDL_UnlockMutex(is->pictq_mutex);
631 }
632 } else if (is->audio_st) {
633 /* draw the next audio frame */
634
635 schedule_refresh(is, 40);
636
637 /* if only audio stream, then display the audio bars (better
638 than nothing, just to test the implementation */
639
640 /* display picture */
641 video_display(is);
642 } else {
643 schedule_refresh(is, 100);
644 }
645 if (show_status) {
646 static int64_t last_time;
647 int64_t cur_time;
648 int aqsize, vqsize;
649 double av_diff;
650
651 cur_time = av_gettime();
652 if (!last_time || (cur_time - last_time) >= 500 * 1000) {
653 aqsize = 0;
654 vqsize = 0;
655 if (is->audio_st)
656 aqsize = is->audioq.size;
657 if (is->video_st)
658 vqsize = is->videoq.size;
659 av_diff = 0;
660 if (is->audio_st && is->video_st)
661 av_diff = get_audio_clock(is) - get_video_clock(is);
662 printf("%7.2f A-V:%7.3f aq=%5dKB vq=%5dKB \r",
663 get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024);
664 fflush(stdout);
665 last_time = cur_time;
666 }
667 }
668 }
669
670 /* allocate a picture (needs to do that in main thread to avoid
671 potential locking problems */
672 static void alloc_picture(void *opaque)
673 {
674 VideoState *is = opaque;
675 VideoPicture *vp;
676 int is_yuv;
677
678 vp = &is->pictq[is->pictq_windex];
679
680 if (vp->bmp)
681 SDL_FreeYUVOverlay(vp->bmp);
682
683 /* XXX: use generic function */
684 switch(is->video_st->codec.pix_fmt) {
685 case PIX_FMT_YUV420P:
686 case PIX_FMT_YUV422P:
687 case PIX_FMT_YUV444P:
688 case PIX_FMT_YUV422:
689 case PIX_FMT_YUV410P:
690 case PIX_FMT_YUV411P:
691 is_yuv = 1;
692 break;
693 default:
694 is_yuv = 0;
695 break;
696 }
697
698 if (is_yuv) {
699 vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec.width,
700 is->video_st->codec.height,
701 SDL_YV12_OVERLAY,
702 screen);
703 } else {
704 #if 0
705 vp->bmp = bmp_alloc(screen,
706 is->video_st->codec.width,
707 is->video_st->codec.height,
708 screen->bitmap_format,
709 0);
710 #endif
711 vp->bmp = NULL;
712 }
713 vp->width = is->video_st->codec.width;
714 vp->height = is->video_st->codec.height;
715
716 SDL_LockMutex(is->pictq_mutex);
717 vp->allocated = 1;
718 SDL_CondSignal(is->pictq_cond);
719 SDL_UnlockMutex(is->pictq_mutex);
720 }
721
722 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts)
723 {
724 VideoPicture *vp;
725 int dst_pix_fmt;
726 AVPicture pict;
727
728 /* wait until we have space to put a new picture */
729 SDL_LockMutex(is->pictq_mutex);
730 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
731 !is->videoq.abort_request) {
732 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
733 }
734 SDL_UnlockMutex(is->pictq_mutex);
735
736 if (is->videoq.abort_request)
737 return -1;
738
739 vp = &is->pictq[is->pictq_windex];
740
741 /* alloc or resize hardware picture buffer */
742 if (!vp->bmp ||
743 vp->width != is->video_st->codec.width ||
744 vp->height != is->video_st->codec.height) {
745 SDL_Event event;
746
747 vp->allocated = 0;
748
749 /* the allocation must be done in the main thread to avoid
750 locking problems */
751 event.type = FF_ALLOC_EVENT;
752 event.user.data1 = is;
753 SDL_PushEvent(&event);
754
755 /* wait until the picture is allocated */
756 SDL_LockMutex(is->pictq_mutex);
757 while (!vp->allocated && !is->videoq.abort_request) {
758 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
759 }
760 SDL_UnlockMutex(is->pictq_mutex);
761
762 if (is->videoq.abort_request)
763 return -1;
764 }
765
766 /* if the frame is not skipped, then display it */
767 if (vp->bmp) {
768 /* get a pointer on the bitmap */
769 SDL_LockYUVOverlay (vp->bmp);
770
771 dst_pix_fmt = PIX_FMT_YUV420P;
772 pict.data[0] = vp->bmp->pixels[0];
773 pict.data[1] = vp->bmp->pixels[2];
774 pict.data[2] = vp->bmp->pixels[1];
775
776 pict.linesize[0] = vp->bmp->pitches[0];
777 pict.linesize[1] = vp->bmp->pitches[2];
778 pict.linesize[2] = vp->bmp->pitches[1];
779
780 img_convert(&pict, dst_pix_fmt,
781 (AVPicture *)src_frame, is->video_st->codec.pix_fmt,
782 is->video_st->codec.width, is->video_st->codec.height);
783 /* update the bitmap content */
784 SDL_UnlockYUVOverlay(vp->bmp);
785
786 vp->pts = pts;
787
788 /* now we can update the picture count */
789 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
790 is->pictq_windex = 0;
791 SDL_LockMutex(is->pictq_mutex);
792 is->pictq_size++;
793 SDL_UnlockMutex(is->pictq_mutex);
794 }
795 return 0;
796 }
797
798 /* compute the exact PTS for the picture if it is omitted in the stream */
799 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1)
800 {
801 double frame_delay, pts;
802
803 pts = pts1;
804
805 /* if B frames are present, and if the current picture is a I
806 or P frame, we use the last pts */
807 if (is->video_st->codec.has_b_frames &&
808 src_frame->pict_type != FF_B_TYPE) {
809 /* use last pts */
810 pts = is->video_last_P_pts;
811 /* get the pts for the next I or P frame if present */
812 is->video_last_P_pts = pts1;
813 }
814
815 if (pts != 0) {
816 /* update video clock with pts, if present */
817 is->video_clock = pts;
818 } else {
819 frame_delay = (double)is->video_st->codec.frame_rate_base /
820 (double)is->video_st->codec.frame_rate;
821 is->video_clock += frame_delay;
822 /* for MPEG2, the frame can be repeated, so we update the
823 clock accordingly */
824 if (src_frame->repeat_pict) {
825 is->video_clock += src_frame->repeat_pict * (frame_delay * 0.5);
826 }
827 }
828
829 #if defined(DEBUG_SYNC) && 0
830 {
831 int ftype;
832 if (src_frame->pict_type == FF_B_TYPE)
833 ftype = 'B';
834 else if (src_frame->pict_type == FF_I_TYPE)
835 ftype = 'I';
836 else
837 ftype = 'P';
838 printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
839 ftype, is->video_clock, pts1);
840 }
841 #endif
842 return queue_picture(is, src_frame, is->video_clock);
843 }
844
845 static int video_thread(void *arg)
846 {
847 VideoState *is = arg;
848 AVPacket pkt1, *pkt = &pkt1;
849 unsigned char *ptr;
850 int len, len1, got_picture;
851 AVFrame frame;
852 int64_t ipts;
853 double pts;
854
855 for(;;) {
856 while (is->paused && !is->videoq.abort_request) {
857 SDL_Delay(10);
858 }
859 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
860 break;
861 /* NOTE: ipts is the PTS of the _first_ picture beginning in
862 this packet, if any */
863 ipts = pkt->pts;
864 ptr = pkt->data;
865 if (is->video_st->codec.codec_id == CODEC_ID_RAWVIDEO) {
866 avpicture_fill((AVPicture *)&frame, ptr,
867 is->video_st->codec.pix_fmt,
868 is->video_st->codec.width,
869 is->video_st->codec.height);
870 pts = 0;
871 if (ipts != AV_NOPTS_VALUE)
872 pts = (double)ipts * is->ic->pts_num / is->ic->pts_den;
873 frame.pict_type = FF_I_TYPE;
874 if (output_picture2(is, &frame, pts) < 0)
875 goto the_end;
876 } else {
877 len = pkt->size;
878 while (len > 0) {
879 if (is->picture_start) {
880 is->ipts = ipts;
881 is->picture_start = 0;
882 ipts = AV_NOPTS_VALUE;
883 }
884 len1 = avcodec_decode_video(&is->video_st->codec,
885 &frame, &got_picture, ptr, len);
886 if (len1 < 0)
887 break;
888 if (got_picture) {
889 pts = 0;
890 if (is->ipts != AV_NOPTS_VALUE)
891 pts = (double)is->ipts * is->ic->pts_num / is->ic->pts_den;
892 if (output_picture2(is, &frame, pts) < 0)
893 goto the_end;
894 is->picture_start = 1;
895 }
896 ptr += len1;
897 len -= len1;
898 }
899 }
900 av_free_packet(pkt);
901 }
902 the_end:
903 return 0;
904 }
905
906 /* copy samples for viewing in editor window */
907 static void update_sample_display(VideoState *is, short *samples, int samples_size)
908 {
909 int size, len, channels;
910
911 channels = is->audio_st->codec.channels;
912
913 size = samples_size / sizeof(short);
914 while (size > 0) {
915 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
916 if (len > size)
917 len = size;
918 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
919 samples += len;
920 is->sample_array_index += len;
921 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
922 is->sample_array_index = 0;
923 size -= len;
924 }
925 }
926
927 /* return the new audio buffer size (samples can be added or deleted
928 to get better sync if video or external master clock) */
929 static int synchronize_audio(VideoState *is, short *samples,
930 int samples_size1, double pts)
931 {
932 int n, samples_size;
933 double ref_clock;
934
935 n = 2 * is->audio_st->codec.channels;
936 samples_size = samples_size1;
937
938 /* if not master, then we try to remove or add samples to correct the clock */
939 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
940 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
941 double diff, avg_diff;
942 int wanted_size, min_size, max_size, nb_samples;
943
944 ref_clock = get_master_clock(is);
945 diff = get_audio_clock(is) - ref_clock;
946
947 if (diff < AV_NOSYNC_THRESHOLD) {
948 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
949 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
950 /* not enough measures to have a correct estimate */
951 is->audio_diff_avg_count++;
952 } else {
953 /* estimate the A-V difference */
954 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
955
956 if (fabs(avg_diff) >= is->audio_diff_threshold) {
957 wanted_size = samples_size + ((int)(diff * is->audio_st->codec.sample_rate) * n);
958 nb_samples = samples_size / n;
959
960 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
961 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
962 if (wanted_size < min_size)
963 wanted_size = min_size;
964 else if (wanted_size > max_size)
965 wanted_size = max_size;
966
967 /* add or remove samples to correction the synchro */
968 if (wanted_size < samples_size) {
969 /* remove samples */
970 samples_size = wanted_size;
971 } else if (wanted_size > samples_size) {
972 uint8_t *samples_end, *q;
973 int nb;
974
975 /* add samples */
976 nb = (samples_size - wanted_size);
977 samples_end = (uint8_t *)samples + samples_size - n;
978 q = samples_end + n;
979 while (nb > 0) {
980 memcpy(q, samples_end, n);
981 q += n;
982 nb -= n;
983 }
984 samples_size = wanted_size;
985 }
986 }
987 #if 0
988 printf("diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
989 diff, avg_diff, samples_size - samples_size1,
990 is->audio_clock, is->video_clock, is->audio_diff_threshold);
991 #endif
992 }
993 } else {
994 /* too big difference : may be initial PTS errors, so
995 reset A-V filter */
996 is->audio_diff_avg_count = 0;
997 is->audio_diff_cum = 0;
998 }
999 }
1000
1001 return samples_size;
1002 }
1003
1004 /* decode one audio frame and returns its uncompressed size */
1005 static int audio_decode_frame(VideoState *is, uint8_t *audio_buf, double *pts_ptr)
1006 {
1007 AVPacket *pkt = &is->audio_pkt;
1008 int len1, data_size;
1009 double pts;
1010
1011 for(;;) {
1012 if (is->paused || is->audioq.abort_request) {
1013 return -1;
1014 }
1015 while (is->audio_pkt_size > 0) {
1016 len1 = avcodec_decode_audio(&is->audio_st->codec,
1017 (int16_t *)audio_buf, &data_size,
1018 is->audio_pkt_data, is->audio_pkt_size);
1019 if (len1 < 0)
1020 break;
1021 is->audio_pkt_data += len1;
1022 is->audio_pkt_size -= len1;
1023 if (data_size > 0) {
1024 pts = 0;
1025 if (is->audio_pkt_ipts != AV_NOPTS_VALUE)
1026 pts = (double)is->audio_pkt_ipts * is->ic->pts_num / is->ic->pts_den;
1027 /* if no pts, then compute it */
1028 if (pts != 0) {
1029 is->audio_clock = pts;
1030 } else {
1031 int n;
1032 n = 2 * is->audio_st->codec.channels;
1033 is->audio_clock += (double)data_size / (double)(n * is->audio_st->codec.sample_rate);
1034 }
1035 #if defined(DEBUG_SYNC)
1036 {
1037 static double last_clock;
1038 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1039 is->audio_clock - last_clock,
1040 is->audio_clock, pts);
1041 last_clock = is->audio_clock;
1042 }
1043 #endif
1044 *pts_ptr = is->audio_clock;
1045 is->audio_pkt_ipts = AV_NOPTS_VALUE;
1046 /* we got samples : we can exit now */
1047 return data_size;
1048 }
1049 }
1050
1051 /* free previous packet if any */
1052 if (pkt->destruct)
1053 av_free_packet(pkt);
1054
1055 /* read next packet */
1056 if (packet_queue_get(&is->audioq, pkt, 1) < 0)
1057 return -1;
1058 is->audio_pkt_data = pkt->data;
1059 is->audio_pkt_size = pkt->size;
1060 is->audio_pkt_ipts = pkt->pts;
1061 }
1062 }
1063
1064 /* get the current audio output buffer size, in samples. With SDL, we
1065 cannot have a precise information */
1066 static int audio_write_get_buf_size(VideoState *is)
1067 {
1068 return is->audio_hw_buf_size - is->audio_buf_index;
1069 }
1070
1071
1072 /* prepare a new audio buffer */
1073 void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1074 {
1075 VideoState *is = opaque;
1076 int audio_size, len1;
1077 double pts;
1078
1079 audio_callback_time = av_gettime();
1080
1081 while (len > 0) {
1082 if (is->audio_buf_index >= is->audio_buf_size) {
1083 audio_size = audio_decode_frame(is, is->audio_buf, &pts);
1084 if (audio_size < 0) {
1085 /* if error, just output silence */
1086 is->audio_buf_size = 1024;
1087 memset(is->audio_buf, 0, is->audio_buf_size);
1088 } else {
1089 if (is->show_audio)
1090 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
1091 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
1092 pts);
1093 is->audio_buf_size = audio_size;
1094 }
1095 is->audio_buf_index = 0;
1096 }
1097 len1 = is->audio_buf_size - is->audio_buf_index;
1098 if (len1 > len)
1099 len1 = len;
1100 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
1101 len -= len1;
1102 stream += len1;
1103 is->audio_buf_index += len1;
1104 }
1105 }
1106
1107
1108 /* open a given stream. Return 0 if OK */
1109 static int stream_component_open(VideoState *is, int stream_index)
1110 {
1111 AVFormatContext *ic = is->ic;
1112 AVCodecContext *enc;
1113 AVCodec *codec;
1114 SDL_AudioSpec wanted_spec, spec;
1115
1116 if (stream_index < 0 || stream_index >= ic->nb_streams)
1117 return -1;
1118 enc = &ic->streams[stream_index]->codec;
1119
1120 /* prepare audio output */
1121 if (enc->codec_type == CODEC_TYPE_AUDIO) {
1122 wanted_spec.freq = enc->sample_rate;
1123 wanted_spec.format = AUDIO_S16SYS;
1124 /* hack for AC3. XXX: suppress that */
1125 if (enc->channels > 2)
1126 enc->channels = 2;
1127 wanted_spec.channels = enc->channels;
1128 wanted_spec.silence = 0;
1129 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
1130 wanted_spec.callback = sdl_audio_callback;
1131 wanted_spec.userdata = is;
1132 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
1133 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
1134 return -1;
1135 }
1136 is->audio_hw_buf_size = spec.size;
1137 }
1138
1139 codec = avcodec_find_decoder(enc->codec_id);
1140 if (!codec ||
1141 avcodec_open(enc, codec) < 0)
1142 return -1;
1143 switch(enc->codec_type) {
1144 case CODEC_TYPE_AUDIO:
1145 is->audio_stream = stream_index;
1146 is->audio_st = ic->streams[stream_index];
1147 is->audio_buf_size = 0;
1148 is->audio_buf_index = 0;
1149 is->audio_pkt_size = 0;
1150
1151 /* init averaging filter */
1152 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
1153 is->audio_diff_avg_count = 0;
1154 /* since we do not have a precise anough audio fifo fullness,
1155 we correct audio sync only if larger than this threshold */
1156 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / enc->sample_rate;
1157
1158 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
1159 packet_queue_init(&is->audioq);
1160 SDL_PauseAudio(0);
1161 break;
1162 case CODEC_TYPE_VIDEO:
1163 is->video_stream = stream_index;
1164 is->video_st = ic->streams[stream_index];
1165
1166 is->frame_last_delay = 40e-3;
1167 is->frame_timer = (double)av_gettime() / 1000000.0;
1168 is->picture_start = 1;
1169 is->video_current_pts_time = av_gettime();
1170
1171 packet_queue_init(&is->videoq);
1172 is->video_tid = SDL_CreateThread(video_thread, is);
1173 break;
1174 default:
1175 break;
1176 }
1177 return 0;
1178 }
1179
1180 static void stream_component_close(VideoState *is, int stream_index)
1181 {
1182 AVFormatContext *ic = is->ic;
1183 AVCodecContext *enc;
1184
1185 enc = &ic->streams[stream_index]->codec;
1186
1187 switch(enc->codec_type) {
1188 case CODEC_TYPE_AUDIO:
1189 packet_queue_abort(&is->audioq);
1190
1191 SDL_CloseAudio();
1192
1193 packet_queue_end(&is->audioq);
1194 break;
1195 case CODEC_TYPE_VIDEO:
1196 packet_queue_abort(&is->videoq);
1197
1198 /* note: we also signal this mutex to make sure we deblock the
1199 video thread in all cases */
1200 SDL_LockMutex(is->pictq_mutex);
1201 SDL_CondSignal(is->pictq_cond);
1202 SDL_UnlockMutex(is->pictq_mutex);
1203
1204 SDL_WaitThread(is->video_tid, NULL);
1205
1206 packet_queue_end(&is->videoq);
1207 break;
1208 default:
1209 break;
1210 }
1211
1212 avcodec_close(enc);
1213 switch(enc->codec_type) {
1214 case CODEC_TYPE_AUDIO:
1215 is->audio_st = NULL;
1216 is->audio_stream = -1;
1217 break;
1218 case CODEC_TYPE_VIDEO:
1219 is->video_st = NULL;
1220 is->video_stream = -1;
1221 break;
1222 default:
1223 break;
1224 }
1225 }
1226
1227 void dump_stream_info(AVFormatContext *s)
1228 {
1229 if (s->track != 0)
1230 fprintf(stderr, "Track: %d\n", s->track);
1231 if (s->title[0] != '\0')
1232 fprintf(stderr, "Title: %s\n", s->title);
1233 if (s->author[0] != '\0')
1234 fprintf(stderr, "Author: %s\n", s->author);
1235 if (s->album[0] != '\0')
1236 fprintf(stderr, "Album: %s\n", s->album);
1237 if (s->year != 0)
1238 fprintf(stderr, "Year: %d\n", s->year);
1239 if (s->genre[0] != '\0')
1240 fprintf(stderr, "Genre: %s\n", s->genre);
1241 }
1242
1243 /* since we have only one decoding thread, we can use a global
1244 variable instead of a thread local variable */
1245 static VideoState *global_video_state;
1246
1247 static int decode_interrupt_cb(void)
1248 {
1249 return (global_video_state && global_video_state->abort_request);
1250 }
1251
1252 /* this thread gets the stream from the disk or the network */
1253 static int decode_thread(void *arg)
1254 {
1255 VideoState *is = arg;
1256 AVFormatContext *ic;
1257 int err, i, ret, video_index, audio_index;
1258 AVPacket pkt1, *pkt = &pkt1;
1259
1260 video_index = -1;
1261 audio_index = -1;
1262 is->video_stream = -1;
1263 is->audio_stream = -1;
1264
1265 global_video_state = is;
1266 url_set_interrupt_cb(decode_interrupt_cb);
1267
1268 err = av_open_input_file(&ic, is->filename, is->iformat, 0, NULL);
1269 if (err < 0) {
1270 print_error(is->filename, err);
1271 ret = -1;
1272 goto fail;
1273 }
1274 is->ic = ic;
1275 err = av_find_stream_info(ic);
1276 if (err < 0) {
1277 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
1278 ret = -1;
1279 goto fail;
1280 }
1281
1282 for(i = 0; i < ic->nb_streams; i++) {
1283 AVCodecContext *enc = &ic->streams[i]->codec;
1284 switch(enc->codec_type) {
1285 case CODEC_TYPE_AUDIO:
1286 if (audio_index < 0 && !audio_disable)
1287 audio_index = i;
1288 break;
1289 case CODEC_TYPE_VIDEO:
1290 if (video_index < 0 && !video_disable)
1291 video_index = i;
1292 break;
1293 default:
1294 break;
1295 }
1296 }
1297 if (show_status) {
1298 dump_format(ic, 0, is->filename, 0);
1299 dump_stream_info(ic);
1300 }
1301
1302 /* open the streams */
1303 if (audio_index >= 0) {
1304 stream_component_open(is, audio_index);
1305 }
1306
1307 if (video_index >= 0) {
1308 stream_component_open(is, video_index);
1309 } else {
1310 if (!display_disable)
1311 is->show_audio = 1;
1312 }
1313
1314 if (is->video_stream < 0 && is->audio_stream < 0) {
1315 fprintf(stderr, "%s: could not open codecs\n", is->filename);
1316 ret = -1;
1317 goto fail;
1318 }
1319
1320 for(;;) {
1321 if (is->abort_request)
1322 break;
1323 #ifdef CONFIG_NETWORK
1324 if (is->paused != is->last_paused) {
1325 is->last_paused = is->paused;
1326 if (ic->iformat == &rtsp_demux) {
1327 if (is->paused)
1328 rtsp_pause(ic);
1329 else
1330 rtsp_resume(ic);
1331 }
1332 }
1333 if (is->paused && ic->iformat == &rtsp_demux) {
1334 /* wait 10 ms to avoid trying to get another packet */
1335 /* XXX: horrible */
1336 SDL_Delay(10);
1337 continue;
1338 }
1339 #endif
1340
1341 /* if the queue are full, no need to read more */
1342 if (is->audioq.size > MAX_AUDIOQ_SIZE ||
1343 is->videoq.size > MAX_VIDEOQ_SIZE) {
1344 /* wait 10 ms */
1345 SDL_Delay(10);
1346 continue;
1347 }
1348 ret = av_read_packet(ic, pkt);
1349 if (ret < 0) {
1350 break;
1351 }
1352 if (pkt->stream_index == is->audio_stream) {
1353 packet_queue_put(&is->audioq, pkt);
1354 } else if (pkt->stream_index == is->video_stream) {
1355 packet_queue_put(&is->videoq, pkt);
1356 } else {
1357 av_free_packet(pkt);
1358 }
1359 }
1360 /* wait until the end */
1361 while (!is->abort_request) {
1362 SDL_Delay(100);
1363 }
1364
1365 ret = 0;
1366 fail:
1367 /* disable interrupting */
1368 global_video_state = NULL;
1369
1370 /* close each stream */
1371 if (is->audio_stream >= 0)
1372 stream_component_close(is, is->audio_stream);
1373 if (is->video_stream >= 0)
1374 stream_component_close(is, is->video_stream);
1375 if (is->ic) {
1376 av_close_input_file(is->ic);
1377 is->ic = NULL; /* safety */
1378 }
1379 url_set_interrupt_cb(NULL);
1380
1381 if (ret != 0) {
1382 SDL_Event event;
1383
1384 event.type = FF_QUIT_EVENT;
1385 event.user.data1 = is;
1386 SDL_PushEvent(&event);
1387 }
1388 return 0;
1389 }
1390
1391 /* pause or resume the video */
1392 static void stream_pause(VideoState *is)
1393 {
1394 is->paused = !is->paused;
1395 }
1396
1397 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
1398 {
1399 VideoState *is;
1400
1401 is = av_mallocz(sizeof(VideoState));
1402 if (!is)
1403 return NULL;
1404 pstrcpy(is->filename, sizeof(is->filename), filename);
1405 is->iformat = iformat;
1406 if (screen) {
1407 is->width = screen->w;
1408 is->height = screen->h;
1409 }
1410 is->ytop = 0;
1411 is->xleft = 0;
1412
1413 /* start video display */
1414 is->pictq_mutex = SDL_CreateMutex();
1415 is->pictq_cond = SDL_CreateCond();
1416
1417 /* add the refresh timer to draw the picture */
1418 schedule_refresh(is, 40);
1419
1420 is->av_sync_type = av_sync_type;
1421 is->parse_tid = SDL_CreateThread(decode_thread, is);
1422 if (!is->parse_tid) {
1423 av_free(is);
1424 return NULL;
1425 }
1426 return is;
1427 }
1428
1429 static void stream_close(VideoState *is)
1430 {
1431 VideoPicture *vp;
1432 int i;
1433 /* XXX: use a special url_shutdown call to abort parse cleanly */
1434 is->abort_request = 1;
1435 SDL_WaitThread(is->parse_tid, NULL);
1436
1437 /* free all pictures */
1438 for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
1439 vp = &is->pictq[i];
1440 if (vp->bmp) {
1441 SDL_FreeYUVOverlay(vp->bmp);
1442 vp->bmp = NULL;
1443 }
1444 }
1445 SDL_DestroyMutex(is->pictq_mutex);
1446 SDL_DestroyCond(is->pictq_cond);
1447 }
1448
1449 void stream_cycle_channel(VideoState *is, int codec_type)
1450 {
1451 AVFormatContext *ic = is->ic;
1452 int start_index, stream_index;
1453 AVStream *st;
1454
1455 if (codec_type == CODEC_TYPE_VIDEO)
1456 start_index = is->video_stream;
1457 else
1458 start_index = is->audio_stream;
1459 if (start_index < 0)
1460 return;
1461 stream_index = start_index;
1462 for(;;) {
1463 if (++stream_index >= is->ic->nb_streams)
1464 stream_index = 0;
1465 if (stream_index == start_index)
1466 return;
1467 st = ic->streams[stream_index];
1468 if (st->codec.codec_type == codec_type) {
1469 /* check that parameters are OK */
1470 switch(codec_type) {
1471 case CODEC_TYPE_AUDIO:
1472 if (st->codec.sample_rate != 0 &&
1473 st->codec.channels != 0)
1474 goto the_end;
1475 break;
1476 case CODEC_TYPE_VIDEO:
1477 goto the_end;
1478 default:
1479 break;
1480 }
1481 }
1482 }
1483 the_end:
1484 stream_component_close(is, start_index);
1485 stream_component_open(is, stream_index);
1486 }
1487
1488
1489 void toggle_full_screen(void)
1490 {
1491 int w, h, flags;
1492 is_full_screen = !is_full_screen;
1493 if (!fs_screen_width) {
1494 /* use default SDL method */
1495 SDL_WM_ToggleFullScreen(screen);
1496 } else {
1497 /* use the recorded resolution */
1498 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1499 if (is_full_screen) {
1500 w = fs_screen_width;
1501 h = fs_screen_height;
1502 flags |= SDL_FULLSCREEN;
1503 } else {
1504 w = screen_width;
1505 h = screen_height;
1506 flags |= SDL_RESIZABLE;
1507 }
1508 screen = SDL_SetVideoMode(w, h, 0, flags);
1509 cur_stream->width = w;
1510 cur_stream->height = h;
1511 }
1512 }
1513
1514 void toggle_pause(void)
1515 {
1516 if (cur_stream)
1517 stream_pause(cur_stream);
1518 }
1519
1520 void do_exit(void)
1521 {
1522 if (cur_stream) {
1523 stream_close(cur_stream);
1524 cur_stream = NULL;
1525 }
1526 if (show_status)
1527 printf("\n");
1528 SDL_Quit();
1529 exit(0);
1530 }
1531
1532 void toggle_audio_display(void)
1533 {
1534 if (cur_stream) {
1535 cur_stream->show_audio = !cur_stream->show_audio;
1536 }
1537 }
1538
1539 /* handle an event sent by the GUI */
1540 void event_loop(void)
1541 {
1542 SDL_Event event;
1543
1544 for(;;) {
1545 SDL_WaitEvent(&event);
1546 switch(event.type) {
1547 case SDL_KEYDOWN:
1548 switch(event.key.keysym.sym) {
1549 case SDLK_ESCAPE:
1550 case SDLK_q:
1551 do_exit();
1552 break;
1553 case SDLK_f:
1554 toggle_full_screen();
1555 break;
1556 case SDLK_p:
1557 case SDLK_SPACE:
1558 toggle_pause();
1559 break;
1560 case SDLK_a:
1561 if (cur_stream)
1562 stream_cycle_channel(cur_stream, CODEC_TYPE_AUDIO);
1563 break;
1564 case SDLK_v:
1565 if (cur_stream)
1566 stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
1567 break;
1568 case SDLK_w:
1569 toggle_audio_display();
1570 break;
1571 default:
1572 break;
1573 }
1574 break;
1575 case SDL_VIDEORESIZE:
1576 if (cur_stream) {
1577 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
1578 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
1579 cur_stream->width = event.resize.w;
1580 cur_stream->height = event.resize.h;
1581 }
1582 break;
1583 case SDL_QUIT:
1584 case FF_QUIT_EVENT:
1585 do_exit();
1586 break;
1587 case FF_ALLOC_EVENT:
1588 alloc_picture(event.user.data1);
1589 break;
1590 case FF_REFRESH_EVENT:
1591 video_refresh_timer(event.user.data1);
1592 break;
1593 default:
1594 break;
1595 }
1596 }
1597 }
1598
1599 void opt_width(const char *arg)
1600 {
1601 screen_width = atoi(arg);
1602 }
1603
1604 void opt_height(const char *arg)
1605 {
1606 screen_height = atoi(arg);
1607 }
1608
1609 static void opt_format(const char *arg)
1610 {
1611 file_iformat = av_find_input_format(arg);
1612 if (!file_iformat) {
1613 fprintf(stderr, "Unknown input format: %s\n", arg);
1614 exit(1);
1615 }
1616 }
1617 #ifdef CONFIG_NETWORK
1618 void opt_rtp_tcp(void)
1619 {
1620 /* only tcp protocol */
1621 rtsp_default_protocols = (1 << RTSP_PROTOCOL_RTP_TCP);
1622 }
1623 #endif
1624
1625 void opt_sync(const char *arg)
1626 {
1627 if (!strcmp(arg, "audio"))
1628 av_sync_type = AV_SYNC_AUDIO_MASTER;
1629 else if (!strcmp(arg, "video"))
1630 av_sync_type = AV_SYNC_VIDEO_MASTER;
1631 else if (!strcmp(arg, "ext"))
1632 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
1633 else
1634 show_help();
1635 }
1636
1637 const OptionDef options[] = {
1638 { "h", 0, {(void*)show_help}, "show help" },
1639 { "x", HAS_ARG, {(void*)opt_width}, "force displayed width", "width" },
1640 { "y", HAS_ARG, {(void*)opt_height}, "force displayed height", "height" },
1641 #if 0
1642 /* disabled as SDL/X11 does not support it correctly on application launch */
1643 { "fs", OPT_BOOL, {(void*)&is_full_screen}, "force full screen" },
1644 #endif
1645 { "an", OPT_BOOL, {(void*)&audio_disable}, "disable audio" },
1646 { "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },
1647 { "nodisp", OPT_BOOL, {(void*)&display_disable}, "disable graphical display" },
1648 { "f", HAS_ARG, {(void*)opt_format}, "force format", "fmt" },
1649 { "stats", OPT_BOOL | OPT_EXPERT, {(void*)&show_status}, "show status", "" },
1650 #ifdef CONFIG_NETWORK
1651 { "rtp_tcp", OPT_EXPERT, {(void*)&opt_rtp_tcp}, "force RTP/TCP protocol usage", "" },
1652 #endif
1653 { "sync", HAS_ARG | OPT_EXPERT, {(void*)&opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
1654 { NULL, },
1655 };
1656
1657 void show_help(void)
1658 {
1659 printf("ffplay version " FFMPEG_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
1660 "usage: ffplay [options] input_file\n"
1661 "Simple media player\n");
1662 printf("\n");
1663 show_help_options(options, "Main options:\n",
1664 OPT_EXPERT, 0);
1665 show_help_options(options, "\nAdvanced options:\n",
1666 OPT_EXPERT, OPT_EXPERT);
1667 printf("\nWhile playing:\n"
1668 "q, ESC quit\n"
1669 "f toggle full screen\n"
1670 "p, SPC pause\n"
1671 "a cycle audio channel\n"
1672 "v cycle video channel\n"
1673 "w show audio waves\n"
1674 );
1675 exit(1);
1676 }
1677
1678 void parse_arg_file(const char *filename)
1679 {
1680 if (!strcmp(filename, "-"))
1681 filename = "pipe:";
1682 input_filename = filename;
1683 }
1684
1685 /* Called from the main */
1686 int main(int argc, char **argv)
1687 {
1688 int flags, w, h;
1689
1690 /* register all codecs, demux and protocols */
1691 av_register_all();
1692
1693 parse_options(argc, argv, options);
1694
1695 if (!input_filename)
1696 show_help();
1697
1698 if (display_disable) {
1699 video_disable = 1;
1700 }
1701 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
1702 #ifndef CONFIG_WIN32
1703 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on win32 */
1704 #endif
1705 if (SDL_Init (flags)) {
1706 fprintf(stderr, "Could not initialize SDL - exiting\n");
1707 exit(1);
1708 }
1709
1710 if (!display_disable) {
1711 #ifdef HAVE_X11
1712 /* save the screen resolution... SDL should allow full screen
1713 by resizing the window */
1714 {
1715 Display *dpy;
1716 dpy = XOpenDisplay(NULL);
1717 if (dpy) {
1718 fs_screen_width = DisplayWidth(dpy, DefaultScreen(dpy));
1719 fs_screen_height = DisplayHeight(dpy, DefaultScreen(dpy));
1720 XCloseDisplay(dpy);
1721 }
1722 }
1723 #endif
1724 flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
1725 if (is_full_screen && fs_screen_width) {
1726 w = fs_screen_width;
1727 h = fs_screen_height;
1728 flags |= SDL_FULLSCREEN;
1729 } else {
1730 w = screen_width;
1731 h = screen_height;
1732 flags |= SDL_RESIZABLE;
1733 }
1734 screen = SDL_SetVideoMode(w, h, 0, flags);
1735 if (!screen) {
1736 fprintf(stderr, "SDL: could not set video mode - exiting\n");
1737 exit(1);
1738 }
1739 SDL_WM_SetCaption("FFplay", "FFplay");
1740 }
1741
1742 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
1743 SDL_EventState(SDL_MOUSEMOTION, SDL_IGNORE);
1744 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
1745 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
1746
1747 cur_stream = stream_open(input_filename, file_iformat);
1748
1749 event_loop();
1750
1751 /* never returns */
1752
1753 return 0;
1754 }