ffplay: use dummy video driver if display is disabled
[ffmpeg.git] / ffplay.c
1 /*
2  * Copyright (c) 2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * simple media player based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <inttypes.h>
28 #include <math.h>
29 #include <limits.h>
30 #include <signal.h>
31 #include "libavutil/avstring.h"
32 #include "libavutil/colorspace.h"
33 #include "libavutil/mathematics.h"
34 #include "libavutil/pixdesc.h"
35 #include "libavutil/imgutils.h"
36 #include "libavutil/dict.h"
37 #include "libavutil/parseutils.h"
38 #include "libavutil/samplefmt.h"
39 #include "libavutil/avassert.h"
40 #include "libavformat/avformat.h"
41 #include "libavdevice/avdevice.h"
42 #include "libswscale/swscale.h"
43 #include "libavutil/opt.h"
44 #include "libavcodec/avfft.h"
45 #include "libswresample/swresample.h"
46
47 #if CONFIG_AVFILTER
48 # include "libavfilter/avcodec.h"
49 # include "libavfilter/avfilter.h"
50 # include "libavfilter/avfiltergraph.h"
51 # include "libavfilter/buffersink.h"
52 # include "libavfilter/buffersrc.h"
53 #endif
54
55 #include <SDL.h>
56 #include <SDL_thread.h>
57
58 #include "cmdutils.h"
59
60 #include <unistd.h>
61 #include <assert.h>
62
63 const char program_name[] = "ffplay";
64 const int program_birth_year = 2003;
65
66 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
67 #define MIN_FRAMES 5
68
69 /* SDL audio buffer size, in samples. Should be small to have precise
70    A/V sync as SDL does not have hardware buffer fullness info. */
71 #define SDL_AUDIO_BUFFER_SIZE 1024
72
73 /* no AV sync correction is done if below the AV sync threshold */
74 #define AV_SYNC_THRESHOLD 0.01
75 /* no AV correction is done if too big error */
76 #define AV_NOSYNC_THRESHOLD 10.0
77
78 /* maximum audio speed change to get correct sync */
79 #define SAMPLE_CORRECTION_PERCENT_MAX 10
80
81 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
82 #define AUDIO_DIFF_AVG_NB   20
83
84 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
85 #define SAMPLE_ARRAY_SIZE (2 * 65536)
86
87 static int sws_flags = SWS_BICUBIC;
88
89 typedef struct PacketQueue {
90     AVPacketList *first_pkt, *last_pkt;
91     int nb_packets;
92     int size;
93     int abort_request;
94     SDL_mutex *mutex;
95     SDL_cond *cond;
96 } PacketQueue;
97
98 #define VIDEO_PICTURE_QUEUE_SIZE 2
99 #define SUBPICTURE_QUEUE_SIZE 4
100
101 typedef struct VideoPicture {
102     double pts;                                  ///< presentation time stamp for this picture
103     int64_t pos;                                 ///< byte position in file
104     int skip;
105     SDL_Overlay *bmp;
106     int width, height; /* source height & width */
107     AVRational sample_aspect_ratio;
108     int allocated;
109     int reallocate;
110
111 #if CONFIG_AVFILTER
112     AVFilterBufferRef *picref;
113 #endif
114 } VideoPicture;
115
116 typedef struct SubPicture {
117     double pts; /* presentation time stamp for this picture */
118     AVSubtitle sub;
119 } SubPicture;
120
121 typedef struct AudioParams {
122     int freq;
123     int channels;
124     int channel_layout;
125     enum AVSampleFormat fmt;
126 } AudioParams;
127
128 enum {
129     AV_SYNC_AUDIO_MASTER, /* default choice */
130     AV_SYNC_VIDEO_MASTER,
131     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
132 };
133
134 typedef struct VideoState {
135     SDL_Thread *read_tid;
136     SDL_Thread *video_tid;
137     SDL_Thread *refresh_tid;
138     AVInputFormat *iformat;
139     int no_background;
140     int abort_request;
141     int force_refresh;
142     int paused;
143     int last_paused;
144     int seek_req;
145     int seek_flags;
146     int64_t seek_pos;
147     int64_t seek_rel;
148     int read_pause_return;
149     AVFormatContext *ic;
150
151     int audio_stream;
152
153     int av_sync_type;
154     double external_clock; /* external clock base */
155     int64_t external_clock_time;
156
157     double audio_clock;
158     double audio_diff_cum; /* used for AV difference average computation */
159     double audio_diff_avg_coef;
160     double audio_diff_threshold;
161     int audio_diff_avg_count;
162     AVStream *audio_st;
163     PacketQueue audioq;
164     int audio_hw_buf_size;
165     DECLARE_ALIGNED(16,uint8_t,audio_buf2)[AVCODEC_MAX_AUDIO_FRAME_SIZE * 4];
166     uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
167     uint8_t *audio_buf;
168     uint8_t *audio_buf1;
169     unsigned int audio_buf_size; /* in bytes */
170     int audio_buf_index; /* in bytes */
171     int audio_write_buf_size;
172     AVPacket audio_pkt_temp;
173     AVPacket audio_pkt;
174     struct AudioParams audio_src;
175     struct AudioParams audio_tgt;
176     struct SwrContext *swr_ctx;
177     double audio_current_pts;
178     double audio_current_pts_drift;
179     int frame_drops_early;
180     int frame_drops_late;
181     AVFrame *frame;
182
183     enum ShowMode {
184         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
185     } show_mode;
186     int16_t sample_array[SAMPLE_ARRAY_SIZE];
187     int sample_array_index;
188     int last_i_start;
189     RDFTContext *rdft;
190     int rdft_bits;
191     FFTSample *rdft_data;
192     int xpos;
193
194     SDL_Thread *subtitle_tid;
195     int subtitle_stream;
196     int subtitle_stream_changed;
197     AVStream *subtitle_st;
198     PacketQueue subtitleq;
199     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
200     int subpq_size, subpq_rindex, subpq_windex;
201     SDL_mutex *subpq_mutex;
202     SDL_cond *subpq_cond;
203
204     double frame_timer;
205     double frame_last_pts;
206     double frame_last_duration;
207     double frame_last_dropped_pts;
208     double frame_last_returned_time;
209     double frame_last_filter_delay;
210     int64_t frame_last_dropped_pos;
211     double video_clock;                          ///< pts of last decoded frame / predicted pts of next decoded frame
212     int video_stream;
213     AVStream *video_st;
214     PacketQueue videoq;
215     double video_current_pts;                    ///< current displayed pts (different from video_clock if frame fifos are used)
216     double video_current_pts_drift;              ///< video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
217     int64_t video_current_pos;                   ///< current displayed file pos
218     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
219     int pictq_size, pictq_rindex, pictq_windex;
220     SDL_mutex *pictq_mutex;
221     SDL_cond *pictq_cond;
222 #if !CONFIG_AVFILTER
223     struct SwsContext *img_convert_ctx;
224 #endif
225
226     char filename[1024];
227     int width, height, xleft, ytop;
228     int step;
229
230 #if CONFIG_AVFILTER
231     AVFilterContext *in_video_filter;           ///< the first filter in the video chain
232     AVFilterContext *out_video_filter;          ///< the last filter in the video chain
233     int use_dr1;
234     FrameBuffer *buffer_pool;
235 #endif
236
237     int refresh;
238     int last_video_stream, last_audio_stream, last_subtitle_stream;
239 } VideoState;
240
241 typedef struct AllocEventProps {
242     VideoState *is;
243     AVFrame *frame;
244 } AllocEventProps;
245
246 static int opt_help(const char *opt, const char *arg);
247
248 /* options specified by the user */
249 static AVInputFormat *file_iformat;
250 static const char *input_filename;
251 static const char *window_title;
252 static int fs_screen_width;
253 static int fs_screen_height;
254 static int screen_width  = 0;
255 static int screen_height = 0;
256 static int audio_disable;
257 static int video_disable;
258 static int wanted_stream[AVMEDIA_TYPE_NB] = {
259     [AVMEDIA_TYPE_AUDIO]    = -1,
260     [AVMEDIA_TYPE_VIDEO]    = -1,
261     [AVMEDIA_TYPE_SUBTITLE] = -1,
262 };
263 static int seek_by_bytes = -1;
264 static int display_disable;
265 static int show_status = 1;
266 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
267 static int64_t start_time = AV_NOPTS_VALUE;
268 static int64_t duration = AV_NOPTS_VALUE;
269 static int workaround_bugs = 1;
270 static int fast = 0;
271 static int genpts = 0;
272 static int lowres = 0;
273 static int idct = FF_IDCT_AUTO;
274 static enum AVDiscard skip_frame       = AVDISCARD_DEFAULT;
275 static enum AVDiscard skip_idct        = AVDISCARD_DEFAULT;
276 static enum AVDiscard skip_loop_filter = AVDISCARD_DEFAULT;
277 static int error_concealment = 3;
278 static int decoder_reorder_pts = -1;
279 static int autoexit;
280 static int exit_on_keydown;
281 static int exit_on_mousedown;
282 static int loop = 1;
283 static int framedrop = -1;
284 static enum ShowMode show_mode = SHOW_MODE_NONE;
285 static const char *audio_codec_name;
286 static const char *subtitle_codec_name;
287 static const char *video_codec_name;
288 static int rdftspeed = 20;
289 #if CONFIG_AVFILTER
290 static char *vfilters = NULL;
291 #endif
292
293 /* current context */
294 static int is_full_screen;
295 static int64_t audio_callback_time;
296
297 static AVPacket flush_pkt;
298
299 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
300 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
301 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
302
303 static SDL_Surface *screen;
304
305 void av_noreturn exit_program(int ret)
306 {
307     exit(ret);
308 }
309
310 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
311 {
312     AVPacketList *pkt1;
313
314     if (q->abort_request)
315        return -1;
316
317     pkt1 = av_malloc(sizeof(AVPacketList));
318     if (!pkt1)
319         return -1;
320     pkt1->pkt = *pkt;
321     pkt1->next = NULL;
322
323     if (!q->last_pkt)
324         q->first_pkt = pkt1;
325     else
326         q->last_pkt->next = pkt1;
327     q->last_pkt = pkt1;
328     q->nb_packets++;
329     q->size += pkt1->pkt.size + sizeof(*pkt1);
330     /* XXX: should duplicate packet data in DV case */
331     SDL_CondSignal(q->cond);
332     return 0;
333 }
334
335 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
336 {
337     int ret;
338
339     /* duplicate the packet */
340     if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
341         return -1;
342
343     SDL_LockMutex(q->mutex);
344     ret = packet_queue_put_private(q, pkt);
345     SDL_UnlockMutex(q->mutex);
346
347     if (pkt != &flush_pkt && ret < 0)
348         av_free_packet(pkt);
349
350     return ret;
351 }
352
353 /* packet queue handling */
354 static void packet_queue_init(PacketQueue *q)
355 {
356     memset(q, 0, sizeof(PacketQueue));
357     q->mutex = SDL_CreateMutex();
358     q->cond = SDL_CreateCond();
359     q->abort_request = 1;
360 }
361
362 static void packet_queue_flush(PacketQueue *q)
363 {
364     AVPacketList *pkt, *pkt1;
365
366     SDL_LockMutex(q->mutex);
367     for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
368         pkt1 = pkt->next;
369         av_free_packet(&pkt->pkt);
370         av_freep(&pkt);
371     }
372     q->last_pkt = NULL;
373     q->first_pkt = NULL;
374     q->nb_packets = 0;
375     q->size = 0;
376     SDL_UnlockMutex(q->mutex);
377 }
378
379 static void packet_queue_destroy(PacketQueue *q)
380 {
381     packet_queue_flush(q);
382     SDL_DestroyMutex(q->mutex);
383     SDL_DestroyCond(q->cond);
384 }
385
386 static void packet_queue_abort(PacketQueue *q)
387 {
388     SDL_LockMutex(q->mutex);
389
390     q->abort_request = 1;
391
392     SDL_CondSignal(q->cond);
393
394     SDL_UnlockMutex(q->mutex);
395 }
396
397 static void packet_queue_start(PacketQueue *q)
398 {
399     SDL_LockMutex(q->mutex);
400     q->abort_request = 0;
401     packet_queue_put_private(q, &flush_pkt);
402     SDL_UnlockMutex(q->mutex);
403 }
404
405 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
406 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
407 {
408     AVPacketList *pkt1;
409     int ret;
410
411     SDL_LockMutex(q->mutex);
412
413     for (;;) {
414         if (q->abort_request) {
415             ret = -1;
416             break;
417         }
418
419         pkt1 = q->first_pkt;
420         if (pkt1) {
421             q->first_pkt = pkt1->next;
422             if (!q->first_pkt)
423                 q->last_pkt = NULL;
424             q->nb_packets--;
425             q->size -= pkt1->pkt.size + sizeof(*pkt1);
426             *pkt = pkt1->pkt;
427             av_free(pkt1);
428             ret = 1;
429             break;
430         } else if (!block) {
431             ret = 0;
432             break;
433         } else {
434             SDL_CondWait(q->cond, q->mutex);
435         }
436     }
437     SDL_UnlockMutex(q->mutex);
438     return ret;
439 }
440
441 static inline void fill_rectangle(SDL_Surface *screen,
442                                   int x, int y, int w, int h, int color)
443 {
444     SDL_Rect rect;
445     rect.x = x;
446     rect.y = y;
447     rect.w = w;
448     rect.h = h;
449     SDL_FillRect(screen, &rect, color);
450 }
451
452 #define ALPHA_BLEND(a, oldp, newp, s)\
453 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
454
455 #define RGBA_IN(r, g, b, a, s)\
456 {\
457     unsigned int v = ((const uint32_t *)(s))[0];\
458     a = (v >> 24) & 0xff;\
459     r = (v >> 16) & 0xff;\
460     g = (v >> 8) & 0xff;\
461     b = v & 0xff;\
462 }
463
464 #define YUVA_IN(y, u, v, a, s, pal)\
465 {\
466     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
467     a = (val >> 24) & 0xff;\
468     y = (val >> 16) & 0xff;\
469     u = (val >> 8) & 0xff;\
470     v = val & 0xff;\
471 }
472
473 #define YUVA_OUT(d, y, u, v, a)\
474 {\
475     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
476 }
477
478
479 #define BPP 1
480
481 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
482 {
483     int wrap, wrap3, width2, skip2;
484     int y, u, v, a, u1, v1, a1, w, h;
485     uint8_t *lum, *cb, *cr;
486     const uint8_t *p;
487     const uint32_t *pal;
488     int dstx, dsty, dstw, dsth;
489
490     dstw = av_clip(rect->w, 0, imgw);
491     dsth = av_clip(rect->h, 0, imgh);
492     dstx = av_clip(rect->x, 0, imgw - dstw);
493     dsty = av_clip(rect->y, 0, imgh - dsth);
494     lum = dst->data[0] + dsty * dst->linesize[0];
495     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
496     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
497
498     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
499     skip2 = dstx >> 1;
500     wrap = dst->linesize[0];
501     wrap3 = rect->pict.linesize[0];
502     p = rect->pict.data[0];
503     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
504
505     if (dsty & 1) {
506         lum += dstx;
507         cb += skip2;
508         cr += skip2;
509
510         if (dstx & 1) {
511             YUVA_IN(y, u, v, a, p, pal);
512             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
513             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
514             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
515             cb++;
516             cr++;
517             lum++;
518             p += BPP;
519         }
520         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
521             YUVA_IN(y, u, v, a, p, pal);
522             u1 = u;
523             v1 = v;
524             a1 = a;
525             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
526
527             YUVA_IN(y, u, v, a, p + BPP, pal);
528             u1 += u;
529             v1 += v;
530             a1 += a;
531             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
532             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
533             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
534             cb++;
535             cr++;
536             p += 2 * BPP;
537             lum += 2;
538         }
539         if (w) {
540             YUVA_IN(y, u, v, a, p, pal);
541             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
542             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
543             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
544             p++;
545             lum++;
546         }
547         p += wrap3 - dstw * BPP;
548         lum += wrap - dstw - dstx;
549         cb += dst->linesize[1] - width2 - skip2;
550         cr += dst->linesize[2] - width2 - skip2;
551     }
552     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
553         lum += dstx;
554         cb += skip2;
555         cr += skip2;
556
557         if (dstx & 1) {
558             YUVA_IN(y, u, v, a, p, pal);
559             u1 = u;
560             v1 = v;
561             a1 = a;
562             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
563             p += wrap3;
564             lum += wrap;
565             YUVA_IN(y, u, v, a, p, pal);
566             u1 += u;
567             v1 += v;
568             a1 += a;
569             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
570             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
571             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
572             cb++;
573             cr++;
574             p += -wrap3 + BPP;
575             lum += -wrap + 1;
576         }
577         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
578             YUVA_IN(y, u, v, a, p, pal);
579             u1 = u;
580             v1 = v;
581             a1 = a;
582             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
583
584             YUVA_IN(y, u, v, a, p + BPP, pal);
585             u1 += u;
586             v1 += v;
587             a1 += a;
588             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
589             p += wrap3;
590             lum += wrap;
591
592             YUVA_IN(y, u, v, a, p, pal);
593             u1 += u;
594             v1 += v;
595             a1 += a;
596             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
597
598             YUVA_IN(y, u, v, a, p + BPP, pal);
599             u1 += u;
600             v1 += v;
601             a1 += a;
602             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
603
604             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
605             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
606
607             cb++;
608             cr++;
609             p += -wrap3 + 2 * BPP;
610             lum += -wrap + 2;
611         }
612         if (w) {
613             YUVA_IN(y, u, v, a, p, pal);
614             u1 = u;
615             v1 = v;
616             a1 = a;
617             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
618             p += wrap3;
619             lum += wrap;
620             YUVA_IN(y, u, v, a, p, pal);
621             u1 += u;
622             v1 += v;
623             a1 += a;
624             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
625             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
626             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
627             cb++;
628             cr++;
629             p += -wrap3 + BPP;
630             lum += -wrap + 1;
631         }
632         p += wrap3 + (wrap3 - dstw * BPP);
633         lum += wrap + (wrap - dstw - dstx);
634         cb += dst->linesize[1] - width2 - skip2;
635         cr += dst->linesize[2] - width2 - skip2;
636     }
637     /* handle odd height */
638     if (h) {
639         lum += dstx;
640         cb += skip2;
641         cr += skip2;
642
643         if (dstx & 1) {
644             YUVA_IN(y, u, v, a, p, pal);
645             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
646             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
647             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
648             cb++;
649             cr++;
650             lum++;
651             p += BPP;
652         }
653         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
654             YUVA_IN(y, u, v, a, p, pal);
655             u1 = u;
656             v1 = v;
657             a1 = a;
658             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
659
660             YUVA_IN(y, u, v, a, p + BPP, pal);
661             u1 += u;
662             v1 += v;
663             a1 += a;
664             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
665             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
666             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
667             cb++;
668             cr++;
669             p += 2 * BPP;
670             lum += 2;
671         }
672         if (w) {
673             YUVA_IN(y, u, v, a, p, pal);
674             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
675             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
676             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
677         }
678     }
679 }
680
681 static void free_subpicture(SubPicture *sp)
682 {
683     avsubtitle_free(&sp->sub);
684 }
685
686 static void video_image_display(VideoState *is)
687 {
688     VideoPicture *vp;
689     SubPicture *sp;
690     AVPicture pict;
691     float aspect_ratio;
692     int width, height, x, y;
693     SDL_Rect rect;
694     int i;
695
696     vp = &is->pictq[is->pictq_rindex];
697     if (vp->bmp) {
698         if (vp->sample_aspect_ratio.num == 0)
699             aspect_ratio = 0;
700         else
701             aspect_ratio = av_q2d(vp->sample_aspect_ratio);
702
703         if (aspect_ratio <= 0.0)
704             aspect_ratio = 1.0;
705         aspect_ratio *= (float)vp->width / (float)vp->height;
706
707         if (is->subtitle_st) {
708             if (is->subpq_size > 0) {
709                 sp = &is->subpq[is->subpq_rindex];
710
711                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
712                     SDL_LockYUVOverlay (vp->bmp);
713
714                     pict.data[0] = vp->bmp->pixels[0];
715                     pict.data[1] = vp->bmp->pixels[2];
716                     pict.data[2] = vp->bmp->pixels[1];
717
718                     pict.linesize[0] = vp->bmp->pitches[0];
719                     pict.linesize[1] = vp->bmp->pitches[2];
720                     pict.linesize[2] = vp->bmp->pitches[1];
721
722                     for (i = 0; i < sp->sub.num_rects; i++)
723                         blend_subrect(&pict, sp->sub.rects[i],
724                                       vp->bmp->w, vp->bmp->h);
725
726                     SDL_UnlockYUVOverlay (vp->bmp);
727                 }
728             }
729         }
730
731
732         /* XXX: we suppose the screen has a 1.0 pixel ratio */
733         height = is->height;
734         width = ((int)rint(height * aspect_ratio)) & ~1;
735         if (width > is->width) {
736             width = is->width;
737             height = ((int)rint(width / aspect_ratio)) & ~1;
738         }
739         x = (is->width - width) / 2;
740         y = (is->height - height) / 2;
741         is->no_background = 0;
742         rect.x = is->xleft + x;
743         rect.y = is->ytop  + y;
744         rect.w = FFMAX(width,  1);
745         rect.h = FFMAX(height, 1);
746         SDL_DisplayYUVOverlay(vp->bmp, &rect);
747     }
748 }
749
750 static inline int compute_mod(int a, int b)
751 {
752     return a < 0 ? a%b + b : a%b;
753 }
754
755 static void video_audio_display(VideoState *s)
756 {
757     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
758     int ch, channels, h, h2, bgcolor, fgcolor;
759     int16_t time_diff;
760     int rdft_bits, nb_freq;
761
762     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
763         ;
764     nb_freq = 1 << (rdft_bits - 1);
765
766     /* compute display index : center on currently output samples */
767     channels = s->audio_tgt.channels;
768     nb_display_channels = channels;
769     if (!s->paused) {
770         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
771         n = 2 * channels;
772         delay = s->audio_write_buf_size;
773         delay /= n;
774
775         /* to be more precise, we take into account the time spent since
776            the last buffer computation */
777         if (audio_callback_time) {
778             time_diff = av_gettime() - audio_callback_time;
779             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
780         }
781
782         delay += 2 * data_used;
783         if (delay < data_used)
784             delay = data_used;
785
786         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
787         if (s->show_mode == SHOW_MODE_WAVES) {
788             h = INT_MIN;
789             for (i = 0; i < 1000; i += channels) {
790                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
791                 int a = s->sample_array[idx];
792                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
793                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
794                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
795                 int score = a - d;
796                 if (h < score && (b ^ c) < 0) {
797                     h = score;
798                     i_start = idx;
799                 }
800             }
801         }
802
803         s->last_i_start = i_start;
804     } else {
805         i_start = s->last_i_start;
806     }
807
808     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
809     if (s->show_mode == SHOW_MODE_WAVES) {
810         fill_rectangle(screen,
811                        s->xleft, s->ytop, s->width, s->height,
812                        bgcolor);
813
814         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
815
816         /* total height for one channel */
817         h = s->height / nb_display_channels;
818         /* graph height / 2 */
819         h2 = (h * 9) / 20;
820         for (ch = 0; ch < nb_display_channels; ch++) {
821             i = i_start + ch;
822             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
823             for (x = 0; x < s->width; x++) {
824                 y = (s->sample_array[i] * h2) >> 15;
825                 if (y < 0) {
826                     y = -y;
827                     ys = y1 - y;
828                 } else {
829                     ys = y1;
830                 }
831                 fill_rectangle(screen,
832                                s->xleft + x, ys, 1, y,
833                                fgcolor);
834                 i += channels;
835                 if (i >= SAMPLE_ARRAY_SIZE)
836                     i -= SAMPLE_ARRAY_SIZE;
837             }
838         }
839
840         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
841
842         for (ch = 1; ch < nb_display_channels; ch++) {
843             y = s->ytop + ch * h;
844             fill_rectangle(screen,
845                            s->xleft, y, s->width, 1,
846                            fgcolor);
847         }
848         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
849     } else {
850         nb_display_channels= FFMIN(nb_display_channels, 2);
851         if (rdft_bits != s->rdft_bits) {
852             av_rdft_end(s->rdft);
853             av_free(s->rdft_data);
854             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
855             s->rdft_bits = rdft_bits;
856             s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
857         }
858         {
859             FFTSample *data[2];
860             for (ch = 0; ch < nb_display_channels; ch++) {
861                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
862                 i = i_start + ch;
863                 for (x = 0; x < 2 * nb_freq; x++) {
864                     double w = (x-nb_freq) * (1.0 / nb_freq);
865                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
866                     i += channels;
867                     if (i >= SAMPLE_ARRAY_SIZE)
868                         i -= SAMPLE_ARRAY_SIZE;
869                 }
870                 av_rdft_calc(s->rdft, data[ch]);
871             }
872             // least efficient way to do this, we should of course directly access it but its more than fast enough
873             for (y = 0; y < s->height; y++) {
874                 double w = 1 / sqrt(nb_freq);
875                 int a = sqrt(w * sqrt(data[0][2 * y + 0] * data[0][2 * y + 0] + data[0][2 * y + 1] * data[0][2 * y + 1]));
876                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
877                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
878                 a = FFMIN(a, 255);
879                 b = FFMIN(b, 255);
880                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
881
882                 fill_rectangle(screen,
883                             s->xpos, s->height-y, 1, 1,
884                             fgcolor);
885             }
886         }
887         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
888         if (!s->paused)
889             s->xpos++;
890         if (s->xpos >= s->width)
891             s->xpos= s->xleft;
892     }
893 }
894
895 static void stream_close(VideoState *is)
896 {
897     VideoPicture *vp;
898     int i;
899     /* XXX: use a special url_shutdown call to abort parse cleanly */
900     is->abort_request = 1;
901     SDL_WaitThread(is->read_tid, NULL);
902     SDL_WaitThread(is->refresh_tid, NULL);
903     packet_queue_destroy(&is->videoq);
904     packet_queue_destroy(&is->audioq);
905     packet_queue_destroy(&is->subtitleq);
906
907     /* free all pictures */
908     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
909         vp = &is->pictq[i];
910 #if CONFIG_AVFILTER
911         if (vp->picref) {
912             avfilter_unref_buffer(vp->picref);
913             vp->picref = NULL;
914         }
915 #endif
916         if (vp->bmp) {
917             SDL_FreeYUVOverlay(vp->bmp);
918             vp->bmp = NULL;
919         }
920     }
921     SDL_DestroyMutex(is->pictq_mutex);
922     SDL_DestroyCond(is->pictq_cond);
923     SDL_DestroyMutex(is->subpq_mutex);
924     SDL_DestroyCond(is->subpq_cond);
925 #if !CONFIG_AVFILTER
926     if (is->img_convert_ctx)
927         sws_freeContext(is->img_convert_ctx);
928 #endif
929     av_free(is);
930 }
931
932 static void do_exit(VideoState *is)
933 {
934     if (is) {
935         stream_close(is);
936     }
937     av_lockmgr_register(NULL);
938     uninit_opts();
939 #if CONFIG_AVFILTER
940     avfilter_uninit();
941 #endif
942     avformat_network_deinit();
943     if (show_status)
944         printf("\n");
945     SDL_Quit();
946     av_log(NULL, AV_LOG_QUIET, "%s", "");
947     exit(0);
948 }
949
950 static void sigterm_handler(int sig)
951 {
952     exit(123);
953 }
954
955 static int video_open(VideoState *is, int force_set_video_mode)
956 {
957     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
958     int w,h;
959     VideoPicture *vp = &is->pictq[is->pictq_rindex];
960
961     if (is_full_screen) flags |= SDL_FULLSCREEN;
962     else                flags |= SDL_RESIZABLE;
963
964     if (is_full_screen && fs_screen_width) {
965         w = fs_screen_width;
966         h = fs_screen_height;
967     } else if (!is_full_screen && screen_width) {
968         w = screen_width;
969         h = screen_height;
970     } else if (vp->width) {
971         w = vp->width;
972         h = vp->height;
973     } else {
974         w = 640;
975         h = 480;
976     }
977     if (screen && is->width == screen->w && screen->w == w
978        && is->height== screen->h && screen->h == h && !force_set_video_mode)
979         return 0;
980     screen = SDL_SetVideoMode(w, h, 0, flags);
981     if (!screen) {
982         fprintf(stderr, "SDL: could not set video mode - exiting\n");
983         do_exit(is);
984     }
985     if (!window_title)
986         window_title = input_filename;
987     SDL_WM_SetCaption(window_title, window_title);
988
989     is->width  = screen->w;
990     is->height = screen->h;
991
992     return 0;
993 }
994
995 /* display the current picture, if any */
996 static void video_display(VideoState *is)
997 {
998     if (!screen)
999         video_open(is, 0);
1000     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1001         video_audio_display(is);
1002     else if (is->video_st)
1003         video_image_display(is);
1004 }
1005
1006 static int refresh_thread(void *opaque)
1007 {
1008     VideoState *is= opaque;
1009     while (!is->abort_request) {
1010         SDL_Event event;
1011         event.type = FF_REFRESH_EVENT;
1012         event.user.data1 = opaque;
1013         if (!is->refresh && (!is->paused || is->force_refresh)) {
1014             is->refresh = 1;
1015             SDL_PushEvent(&event);
1016         }
1017         //FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
1018         usleep(is->audio_st && is->show_mode != SHOW_MODE_VIDEO ? rdftspeed*1000 : 5000);
1019     }
1020     return 0;
1021 }
1022
1023 /* get the current audio clock value */
1024 static double get_audio_clock(VideoState *is)
1025 {
1026     if (is->paused) {
1027         return is->audio_current_pts;
1028     } else {
1029         return is->audio_current_pts_drift + av_gettime() / 1000000.0;
1030     }
1031 }
1032
1033 /* get the current video clock value */
1034 static double get_video_clock(VideoState *is)
1035 {
1036     if (is->paused) {
1037         return is->video_current_pts;
1038     } else {
1039         return is->video_current_pts_drift + av_gettime() / 1000000.0;
1040     }
1041 }
1042
1043 /* get the current external clock value */
1044 static double get_external_clock(VideoState *is)
1045 {
1046     int64_t ti;
1047     ti = av_gettime();
1048     return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
1049 }
1050
1051 /* get the current master clock value */
1052 static double get_master_clock(VideoState *is)
1053 {
1054     double val;
1055
1056     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1057         if (is->video_st)
1058             val = get_video_clock(is);
1059         else
1060             val = get_audio_clock(is);
1061     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1062         if (is->audio_st)
1063             val = get_audio_clock(is);
1064         else
1065             val = get_video_clock(is);
1066     } else {
1067         val = get_external_clock(is);
1068     }
1069     return val;
1070 }
1071
1072 /* seek in the stream */
1073 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1074 {
1075     if (!is->seek_req) {
1076         is->seek_pos = pos;
1077         is->seek_rel = rel;
1078         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1079         if (seek_by_bytes)
1080             is->seek_flags |= AVSEEK_FLAG_BYTE;
1081         is->seek_req = 1;
1082     }
1083 }
1084
1085 /* pause or resume the video */
1086 static void stream_toggle_pause(VideoState *is)
1087 {
1088     if (is->paused) {
1089         is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1090         if (is->read_pause_return != AVERROR(ENOSYS)) {
1091             is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
1092         }
1093         is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
1094     }
1095     is->paused = !is->paused;
1096 }
1097
1098 static double compute_target_delay(double delay, VideoState *is)
1099 {
1100     double sync_threshold, diff;
1101
1102     /* update delay to follow master synchronisation source */
1103     if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1104          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1105         /* if video is slave, we try to correct big delays by
1106            duplicating or deleting a frame */
1107         diff = get_video_clock(is) - get_master_clock(is);
1108
1109         /* skip or repeat frame. We take into account the
1110            delay to compute the threshold. I still don't know
1111            if it is the best guess */
1112         sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1113         if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1114             if (diff <= -sync_threshold)
1115                 delay = 0;
1116             else if (diff >= sync_threshold)
1117                 delay = 2 * delay;
1118         }
1119     }
1120
1121     av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
1122             delay, -diff);
1123
1124     return delay;
1125 }
1126
1127 static void pictq_next_picture(VideoState *is) {
1128     /* update queue size and signal for next picture */
1129     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1130         is->pictq_rindex = 0;
1131
1132     SDL_LockMutex(is->pictq_mutex);
1133     is->pictq_size--;
1134     SDL_CondSignal(is->pictq_cond);
1135     SDL_UnlockMutex(is->pictq_mutex);
1136 }
1137
1138 static void update_video_pts(VideoState *is, double pts, int64_t pos) {
1139     double time = av_gettime() / 1000000.0;
1140     /* update current video pts */
1141     is->video_current_pts = pts;
1142     is->video_current_pts_drift = is->video_current_pts - time;
1143     is->video_current_pos = pos;
1144     is->frame_last_pts = pts;
1145 }
1146
1147 /* called to display each frame */
1148 static void video_refresh(void *opaque)
1149 {
1150     VideoState *is = opaque;
1151     VideoPicture *vp;
1152     double time;
1153
1154     SubPicture *sp, *sp2;
1155
1156     if (is->video_st) {
1157 retry:
1158         if (is->pictq_size == 0) {
1159             SDL_LockMutex(is->pictq_mutex);
1160             if (is->frame_last_dropped_pts != AV_NOPTS_VALUE && is->frame_last_dropped_pts > is->frame_last_pts) {
1161                 update_video_pts(is, is->frame_last_dropped_pts, is->frame_last_dropped_pos);
1162                 is->frame_last_dropped_pts = AV_NOPTS_VALUE;
1163             }
1164             SDL_UnlockMutex(is->pictq_mutex);
1165             // nothing to do, no picture to display in the que
1166         } else {
1167             double last_duration, duration, delay;
1168             /* dequeue the picture */
1169             vp = &is->pictq[is->pictq_rindex];
1170
1171             if (vp->skip) {
1172                 pictq_next_picture(is);
1173                 goto retry;
1174             }
1175
1176             if (is->paused)
1177                 goto display;
1178
1179             /* compute nominal last_duration */
1180             last_duration = vp->pts - is->frame_last_pts;
1181             if (last_duration > 0 && last_duration < 10.0) {
1182                 /* if duration of the last frame was sane, update last_duration in video state */
1183                 is->frame_last_duration = last_duration;
1184             }
1185             delay = compute_target_delay(is->frame_last_duration, is);
1186
1187             time= av_gettime()/1000000.0;
1188             if (time < is->frame_timer + delay)
1189                 return;
1190
1191             if (delay > 0)
1192                 is->frame_timer += delay * FFMAX(1, floor((time-is->frame_timer) / delay));
1193
1194             SDL_LockMutex(is->pictq_mutex);
1195             update_video_pts(is, vp->pts, vp->pos);
1196             SDL_UnlockMutex(is->pictq_mutex);
1197
1198             if (is->pictq_size > 1) {
1199                 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1200                 duration = nextvp->pts - vp->pts;
1201                 if((framedrop>0 || (framedrop && is->audio_st)) && time > is->frame_timer + duration){
1202                     is->frame_drops_late++;
1203                     pictq_next_picture(is);
1204                     goto retry;
1205                 }
1206             }
1207
1208             if (is->subtitle_st) {
1209                 if (is->subtitle_stream_changed) {
1210                     SDL_LockMutex(is->subpq_mutex);
1211
1212                     while (is->subpq_size) {
1213                         free_subpicture(&is->subpq[is->subpq_rindex]);
1214
1215                         /* update queue size and signal for next picture */
1216                         if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1217                             is->subpq_rindex = 0;
1218
1219                         is->subpq_size--;
1220                     }
1221                     is->subtitle_stream_changed = 0;
1222
1223                     SDL_CondSignal(is->subpq_cond);
1224                     SDL_UnlockMutex(is->subpq_mutex);
1225                 } else {
1226                     if (is->subpq_size > 0) {
1227                         sp = &is->subpq[is->subpq_rindex];
1228
1229                         if (is->subpq_size > 1)
1230                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1231                         else
1232                             sp2 = NULL;
1233
1234                         if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1235                                 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1236                         {
1237                             free_subpicture(sp);
1238
1239                             /* update queue size and signal for next picture */
1240                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1241                                 is->subpq_rindex = 0;
1242
1243                             SDL_LockMutex(is->subpq_mutex);
1244                             is->subpq_size--;
1245                             SDL_CondSignal(is->subpq_cond);
1246                             SDL_UnlockMutex(is->subpq_mutex);
1247                         }
1248                     }
1249                 }
1250             }
1251
1252 display:
1253             /* display picture */
1254             if (!display_disable)
1255                 video_display(is);
1256
1257             if (!is->paused)
1258                 pictq_next_picture(is);
1259         }
1260     } else if (is->audio_st) {
1261         /* draw the next audio frame */
1262
1263         /* if only audio stream, then display the audio bars (better
1264            than nothing, just to test the implementation */
1265
1266         /* display picture */
1267         if (!display_disable)
1268             video_display(is);
1269     }
1270     is->force_refresh = 0;
1271     if (show_status) {
1272         static int64_t last_time;
1273         int64_t cur_time;
1274         int aqsize, vqsize, sqsize;
1275         double av_diff;
1276
1277         cur_time = av_gettime();
1278         if (!last_time || (cur_time - last_time) >= 30000) {
1279             aqsize = 0;
1280             vqsize = 0;
1281             sqsize = 0;
1282             if (is->audio_st)
1283                 aqsize = is->audioq.size;
1284             if (is->video_st)
1285                 vqsize = is->videoq.size;
1286             if (is->subtitle_st)
1287                 sqsize = is->subtitleq.size;
1288             av_diff = 0;
1289             if (is->audio_st && is->video_st)
1290                 av_diff = get_audio_clock(is) - get_video_clock(is);
1291             printf("%7.2f A-V:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1292                    get_master_clock(is),
1293                    av_diff,
1294                    is->frame_drops_early + is->frame_drops_late,
1295                    aqsize / 1024,
1296                    vqsize / 1024,
1297                    sqsize,
1298                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1299                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1300             fflush(stdout);
1301             last_time = cur_time;
1302         }
1303     }
1304 }
1305
1306 /* allocate a picture (needs to do that in main thread to avoid
1307    potential locking problems */
1308 static void alloc_picture(AllocEventProps *event_props)
1309 {
1310     VideoState *is = event_props->is;
1311     AVFrame *frame = event_props->frame;
1312     VideoPicture *vp;
1313
1314     vp = &is->pictq[is->pictq_windex];
1315
1316     if (vp->bmp)
1317         SDL_FreeYUVOverlay(vp->bmp);
1318
1319 #if CONFIG_AVFILTER
1320     if (vp->picref)
1321         avfilter_unref_buffer(vp->picref);
1322     vp->picref = NULL;
1323 #endif
1324
1325     vp->width   = frame->width;
1326     vp->height  = frame->height;
1327
1328     video_open(event_props->is, 0);
1329
1330     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1331                                    SDL_YV12_OVERLAY,
1332                                    screen);
1333     if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1334         /* SDL allocates a buffer smaller than requested if the video
1335          * overlay hardware is unable to support the requested size. */
1336         fprintf(stderr, "Error: the video system does not support an image\n"
1337                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1338                         "to reduce the image size.\n", vp->width, vp->height );
1339         do_exit(is);
1340     }
1341
1342     SDL_LockMutex(is->pictq_mutex);
1343     vp->allocated = 1;
1344     SDL_CondSignal(is->pictq_cond);
1345     SDL_UnlockMutex(is->pictq_mutex);
1346 }
1347
1348 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1349 {
1350     VideoPicture *vp;
1351     double frame_delay, pts = pts1;
1352
1353     /* compute the exact PTS for the picture if it is omitted in the stream
1354      * pts1 is the dts of the pkt / pts of the frame */
1355     if (pts != 0) {
1356         /* update video clock with pts, if present */
1357         is->video_clock = pts;
1358     } else {
1359         pts = is->video_clock;
1360     }
1361     /* update video clock for next frame */
1362     frame_delay = av_q2d(is->video_st->codec->time_base);
1363     /* for MPEG2, the frame can be repeated, so we update the
1364        clock accordingly */
1365     frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1366     is->video_clock += frame_delay;
1367
1368 #if defined(DEBUG_SYNC) && 0
1369     printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
1370            av_get_picture_type_char(src_frame->pict_type), pts, pts1);
1371 #endif
1372
1373     /* wait until we have space to put a new picture */
1374     SDL_LockMutex(is->pictq_mutex);
1375
1376     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1377            !is->videoq.abort_request) {
1378         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1379     }
1380     SDL_UnlockMutex(is->pictq_mutex);
1381
1382     if (is->videoq.abort_request)
1383         return -1;
1384
1385     vp = &is->pictq[is->pictq_windex];
1386
1387     /* alloc or resize hardware picture buffer */
1388     if (!vp->bmp || vp->reallocate ||
1389         vp->width  != src_frame->width ||
1390         vp->height != src_frame->height) {
1391         SDL_Event event;
1392         AllocEventProps event_props;
1393
1394         event_props.frame = src_frame;
1395         event_props.is = is;
1396
1397         vp->allocated  = 0;
1398         vp->reallocate = 0;
1399
1400         /* the allocation must be done in the main thread to avoid
1401            locking problems. We wait in this block for the event to complete,
1402            so we can pass a pointer to event_props to it. */
1403         event.type = FF_ALLOC_EVENT;
1404         event.user.data1 = &event_props;
1405         SDL_PushEvent(&event);
1406
1407         /* wait until the picture is allocated */
1408         SDL_LockMutex(is->pictq_mutex);
1409         while (!vp->allocated && !is->videoq.abort_request) {
1410             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1411         }
1412         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1413         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1414             while (!vp->allocated) {
1415                 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1416             }
1417         }
1418         SDL_UnlockMutex(is->pictq_mutex);
1419
1420         if (is->videoq.abort_request)
1421             return -1;
1422     }
1423
1424     /* if the frame is not skipped, then display it */
1425     if (vp->bmp) {
1426         AVPicture pict = { { 0 } };
1427 #if CONFIG_AVFILTER
1428         if (vp->picref)
1429             avfilter_unref_buffer(vp->picref);
1430         vp->picref = src_frame->opaque;
1431 #endif
1432
1433         /* get a pointer on the bitmap */
1434         SDL_LockYUVOverlay (vp->bmp);
1435
1436         pict.data[0] = vp->bmp->pixels[0];
1437         pict.data[1] = vp->bmp->pixels[2];
1438         pict.data[2] = vp->bmp->pixels[1];
1439
1440         pict.linesize[0] = vp->bmp->pitches[0];
1441         pict.linesize[1] = vp->bmp->pitches[2];
1442         pict.linesize[2] = vp->bmp->pitches[1];
1443
1444 #if CONFIG_AVFILTER
1445         // FIXME use direct rendering
1446         av_picture_copy(&pict, (AVPicture *)src_frame,
1447                         src_frame->format, vp->width, vp->height);
1448         vp->sample_aspect_ratio = vp->picref->video->sample_aspect_ratio;
1449 #else
1450         sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1451         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1452             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1453             PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1454         if (is->img_convert_ctx == NULL) {
1455             fprintf(stderr, "Cannot initialize the conversion context\n");
1456             exit(1);
1457         }
1458         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1459                   0, vp->height, pict.data, pict.linesize);
1460         vp->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, src_frame);
1461 #endif
1462         /* update the bitmap content */
1463         SDL_UnlockYUVOverlay(vp->bmp);
1464
1465         vp->pts = pts;
1466         vp->pos = pos;
1467         vp->skip = 0;
1468
1469         /* now we can update the picture count */
1470         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1471             is->pictq_windex = 0;
1472         SDL_LockMutex(is->pictq_mutex);
1473         is->pictq_size++;
1474         SDL_UnlockMutex(is->pictq_mutex);
1475     }
1476     return 0;
1477 }
1478
1479 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1480 {
1481     int got_picture, i;
1482
1483     if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1484         return -1;
1485
1486     if (pkt->data == flush_pkt.data) {
1487         avcodec_flush_buffers(is->video_st->codec);
1488
1489         SDL_LockMutex(is->pictq_mutex);
1490         // Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1491         for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1492             is->pictq[i].skip = 1;
1493         }
1494         while (is->pictq_size && !is->videoq.abort_request) {
1495             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1496         }
1497         is->video_current_pos = -1;
1498         is->frame_last_pts = AV_NOPTS_VALUE;
1499         is->frame_last_duration = 0;
1500         is->frame_timer = (double)av_gettime() / 1000000.0;
1501         is->frame_last_dropped_pts = AV_NOPTS_VALUE;
1502         SDL_UnlockMutex(is->pictq_mutex);
1503
1504         return 0;
1505     }
1506
1507     avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt);
1508
1509     if (got_picture) {
1510         int ret = 1;
1511
1512         if (decoder_reorder_pts == -1) {
1513             *pts = av_frame_get_best_effort_timestamp(frame);
1514         } else if (decoder_reorder_pts) {
1515             *pts = frame->pkt_pts;
1516         } else {
1517             *pts = frame->pkt_dts;
1518         }
1519
1520         if (*pts == AV_NOPTS_VALUE) {
1521             *pts = 0;
1522         }
1523
1524         if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) || is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK) &&
1525              (framedrop>0 || (framedrop && is->audio_st))) {
1526             SDL_LockMutex(is->pictq_mutex);
1527             if (is->frame_last_pts != AV_NOPTS_VALUE && *pts) {
1528                 double clockdiff = get_video_clock(is) - get_master_clock(is);
1529                 double dpts = av_q2d(is->video_st->time_base) * *pts;
1530                 double ptsdiff = dpts - is->frame_last_pts;
1531                 if (fabs(clockdiff) < AV_NOSYNC_THRESHOLD &&
1532                      ptsdiff > 0 && ptsdiff < AV_NOSYNC_THRESHOLD &&
1533                      clockdiff + ptsdiff - is->frame_last_filter_delay < 0) {
1534                     is->frame_last_dropped_pos = pkt->pos;
1535                     is->frame_last_dropped_pts = dpts;
1536                     is->frame_drops_early++;
1537                     ret = 0;
1538                 }
1539             }
1540             SDL_UnlockMutex(is->pictq_mutex);
1541         }
1542
1543         if (ret)
1544             is->frame_last_returned_time = av_gettime() / 1000000.0;
1545
1546         return ret;
1547     }
1548     return 0;
1549 }
1550
1551 #if CONFIG_AVFILTER
1552 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1553 {
1554     static const enum PixelFormat pix_fmts[] = { PIX_FMT_YUV420P, PIX_FMT_NONE };
1555     char sws_flags_str[128];
1556     char buffersrc_args[256];
1557     int ret;
1558     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
1559     AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_format;
1560     AVCodecContext *codec = is->video_st->codec;
1561
1562     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1563     graph->scale_sws_opts = av_strdup(sws_flags_str);
1564
1565     snprintf(buffersrc_args, sizeof(buffersrc_args), "%d:%d:%d:%d:%d:%d:%d",
1566              codec->width, codec->height, codec->pix_fmt,
1567              is->video_st->time_base.num, is->video_st->time_base.den,
1568              codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
1569
1570
1571     if ((ret = avfilter_graph_create_filter(&filt_src,
1572                                             avfilter_get_by_name("buffer"),
1573                                             "src", buffersrc_args, NULL,
1574                                             graph)) < 0)
1575         return ret;
1576
1577 #if FF_API_OLD_VSINK_API
1578     ret = avfilter_graph_create_filter(&filt_out,
1579                                        avfilter_get_by_name("buffersink"),
1580                                        "out", NULL, pix_fmts, graph);
1581 #else
1582     buffersink_params->pixel_fmts = pix_fmts;
1583     ret = avfilter_graph_create_filter(&filt_out,
1584                                        avfilter_get_by_name("buffersink"),
1585                                        "out", NULL, buffersink_params, graph);
1586 #endif
1587     av_freep(&buffersink_params);
1588     if (ret < 0)
1589         return ret;
1590
1591     if ((ret = avfilter_graph_create_filter(&filt_format,
1592                                             avfilter_get_by_name("format"),
1593                                             "format", "yuv420p", NULL, graph)) < 0)
1594         return ret;
1595     if ((ret = avfilter_link(filt_format, 0, filt_out, 0)) < 0)
1596         return ret;
1597
1598
1599     if (vfilters) {
1600         AVFilterInOut *outputs = avfilter_inout_alloc();
1601         AVFilterInOut *inputs  = avfilter_inout_alloc();
1602
1603         outputs->name    = av_strdup("in");
1604         outputs->filter_ctx = filt_src;
1605         outputs->pad_idx = 0;
1606         outputs->next    = NULL;
1607
1608         inputs->name    = av_strdup("out");
1609         inputs->filter_ctx = filt_format;
1610         inputs->pad_idx = 0;
1611         inputs->next    = NULL;
1612
1613         if ((ret = avfilter_graph_parse(graph, vfilters, &inputs, &outputs, NULL)) < 0)
1614             return ret;
1615     } else {
1616         if ((ret = avfilter_link(filt_src, 0, filt_format, 0)) < 0)
1617             return ret;
1618     }
1619
1620     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1621         return ret;
1622
1623     is->in_video_filter  = filt_src;
1624     is->out_video_filter = filt_out;
1625
1626     if (codec->codec->capabilities & CODEC_CAP_DR1) {
1627         is->use_dr1 = 1;
1628         codec->get_buffer     = codec_get_buffer;
1629         codec->release_buffer = codec_release_buffer;
1630         codec->opaque         = &is->buffer_pool;
1631     }
1632
1633     return ret;
1634 }
1635
1636 #endif  /* CONFIG_AVFILTER */
1637
1638 static int video_thread(void *arg)
1639 {
1640     VideoState *is = arg;
1641     AVFrame *frame = avcodec_alloc_frame();
1642     int64_t pts_int = AV_NOPTS_VALUE, pos = -1;
1643     double pts;
1644     int ret;
1645
1646 #if CONFIG_AVFILTER
1647     AVFilterGraph *graph = avfilter_graph_alloc();
1648     AVFilterContext *filt_out = NULL, *filt_in = NULL;
1649     int last_w = is->video_st->codec->width;
1650     int last_h = is->video_st->codec->height;
1651
1652     if ((ret = configure_video_filters(graph, is, vfilters)) < 0) {
1653         SDL_Event event;
1654         event.type = FF_QUIT_EVENT;
1655         event.user.data1 = is;
1656         SDL_PushEvent(&event);
1657         goto the_end;
1658     }
1659     filt_in  = is->in_video_filter;
1660     filt_out = is->out_video_filter;
1661 #endif
1662
1663     for (;;) {
1664         AVPacket pkt;
1665 #if CONFIG_AVFILTER
1666         AVFilterBufferRef *picref;
1667         AVRational tb = filt_out->inputs[0]->time_base;
1668 #endif
1669         while (is->paused && !is->videoq.abort_request)
1670             SDL_Delay(10);
1671
1672         ret = get_video_frame(is, frame, &pts_int, &pkt);
1673         if (ret < 0)
1674             goto the_end;
1675         av_free_packet(&pkt);
1676
1677         if (!ret)
1678             continue;
1679
1680         is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time;
1681         if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
1682             is->frame_last_filter_delay = 0;
1683
1684 #if CONFIG_AVFILTER
1685         if (   last_w != is->video_st->codec->width
1686             || last_h != is->video_st->codec->height) {
1687             av_log(NULL, AV_LOG_INFO, "Frame changed from size:%dx%d to size:%dx%d\n",
1688                    last_w, last_h, is->video_st->codec->width, is->video_st->codec->height);
1689             avfilter_graph_free(&graph);
1690             graph = avfilter_graph_alloc();
1691             if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1692                 goto the_end;
1693             filt_out = is->out_video_filter;
1694             last_w = is->video_st->codec->width;
1695             last_h = is->video_st->codec->height;
1696         }
1697
1698         frame->pts = pts_int;
1699         if (is->use_dr1) {
1700             FrameBuffer      *buf = frame->opaque;
1701             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1702                                         frame->data, frame->linesize,
1703                                         AV_PERM_READ | AV_PERM_PRESERVE,
1704                                         frame->width, frame->height,
1705                                         frame->format);
1706
1707             avfilter_copy_frame_props(fb, frame);
1708             fb->buf->priv           = buf;
1709             fb->buf->free           = filter_release_buffer;
1710
1711             buf->refcount++;
1712             av_buffersrc_buffer(filt_in, fb);
1713
1714         } else
1715             av_buffersrc_write_frame(filt_in, frame);
1716
1717         while (ret >= 0) {
1718             ret = av_buffersink_get_buffer_ref(filt_out, &picref, 0);
1719             if (ret < 0) {
1720                 ret = 0;
1721                 break;
1722             }
1723
1724             avfilter_fill_frame_from_video_buffer_ref(frame, picref);
1725
1726             pts_int = picref->pts;
1727             tb      = filt_out->inputs[0]->time_base;
1728             pos     = picref->pos;
1729             frame->opaque = picref;
1730
1731             if (av_cmp_q(tb, is->video_st->time_base)) {
1732                 av_unused int64_t pts1 = pts_int;
1733                 pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1734                 av_dlog(NULL, "video_thread(): "
1735                         "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1736                         tb.num, tb.den, pts1,
1737                         is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1738             }
1739             pts = pts_int * av_q2d(is->video_st->time_base);
1740             ret = queue_picture(is, frame, pts, pos);
1741         }
1742 #else
1743         pts = pts_int * av_q2d(is->video_st->time_base);
1744         ret = queue_picture(is, frame, pts, pkt.pos);
1745 #endif
1746
1747         if (ret < 0)
1748             goto the_end;
1749
1750         if (is->step)
1751             stream_toggle_pause(is);
1752     }
1753  the_end:
1754     avcodec_flush_buffers(is->video_st->codec);
1755 #if CONFIG_AVFILTER
1756     av_freep(&vfilters);
1757     avfilter_graph_free(&graph);
1758 #endif
1759     av_free(frame);
1760     return 0;
1761 }
1762
1763 static int subtitle_thread(void *arg)
1764 {
1765     VideoState *is = arg;
1766     SubPicture *sp;
1767     AVPacket pkt1, *pkt = &pkt1;
1768     int got_subtitle;
1769     double pts;
1770     int i, j;
1771     int r, g, b, y, u, v, a;
1772
1773     for (;;) {
1774         while (is->paused && !is->subtitleq.abort_request) {
1775             SDL_Delay(10);
1776         }
1777         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1778             break;
1779
1780         if (pkt->data == flush_pkt.data) {
1781             avcodec_flush_buffers(is->subtitle_st->codec);
1782             continue;
1783         }
1784         SDL_LockMutex(is->subpq_mutex);
1785         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1786                !is->subtitleq.abort_request) {
1787             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1788         }
1789         SDL_UnlockMutex(is->subpq_mutex);
1790
1791         if (is->subtitleq.abort_request)
1792             return 0;
1793
1794         sp = &is->subpq[is->subpq_windex];
1795
1796        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1797            this packet, if any */
1798         pts = 0;
1799         if (pkt->pts != AV_NOPTS_VALUE)
1800             pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
1801
1802         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1803                                  &got_subtitle, pkt);
1804
1805         if (got_subtitle && sp->sub.format == 0) {
1806             sp->pts = pts;
1807
1808             for (i = 0; i < sp->sub.num_rects; i++)
1809             {
1810                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1811                 {
1812                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1813                     y = RGB_TO_Y_CCIR(r, g, b);
1814                     u = RGB_TO_U_CCIR(r, g, b, 0);
1815                     v = RGB_TO_V_CCIR(r, g, b, 0);
1816                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1817                 }
1818             }
1819
1820             /* now we can update the picture count */
1821             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1822                 is->subpq_windex = 0;
1823             SDL_LockMutex(is->subpq_mutex);
1824             is->subpq_size++;
1825             SDL_UnlockMutex(is->subpq_mutex);
1826         }
1827         av_free_packet(pkt);
1828     }
1829     return 0;
1830 }
1831
1832 /* copy samples for viewing in editor window */
1833 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1834 {
1835     int size, len;
1836
1837     size = samples_size / sizeof(short);
1838     while (size > 0) {
1839         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1840         if (len > size)
1841             len = size;
1842         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1843         samples += len;
1844         is->sample_array_index += len;
1845         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1846             is->sample_array_index = 0;
1847         size -= len;
1848     }
1849 }
1850
1851 /* return the wanted number of samples to get better sync if sync_type is video
1852  * or external master clock */
1853 static int synchronize_audio(VideoState *is, int nb_samples)
1854 {
1855     int wanted_nb_samples = nb_samples;
1856
1857     /* if not master, then we try to remove or add samples to correct the clock */
1858     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1859          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1860         double diff, avg_diff;
1861         int min_nb_samples, max_nb_samples;
1862
1863         diff = get_audio_clock(is) - get_master_clock(is);
1864
1865         if (diff < AV_NOSYNC_THRESHOLD) {
1866             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1867             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1868                 /* not enough measures to have a correct estimate */
1869                 is->audio_diff_avg_count++;
1870             } else {
1871                 /* estimate the A-V difference */
1872                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1873
1874                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1875                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
1876                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
1877                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
1878                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
1879                 }
1880                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1881                         diff, avg_diff, wanted_nb_samples - nb_samples,
1882                         is->audio_clock, is->video_clock, is->audio_diff_threshold);
1883             }
1884         } else {
1885             /* too big difference : may be initial PTS errors, so
1886                reset A-V filter */
1887             is->audio_diff_avg_count = 0;
1888             is->audio_diff_cum       = 0;
1889         }
1890     }
1891
1892     return wanted_nb_samples;
1893 }
1894
1895 /* decode one audio frame and returns its uncompressed size */
1896 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1897 {
1898     AVPacket *pkt_temp = &is->audio_pkt_temp;
1899     AVPacket *pkt = &is->audio_pkt;
1900     AVCodecContext *dec = is->audio_st->codec;
1901     int len1, len2, data_size, resampled_data_size;
1902     int64_t dec_channel_layout;
1903     int got_frame;
1904     double pts;
1905     int new_packet = 0;
1906     int flush_complete = 0;
1907     int wanted_nb_samples;
1908
1909     for (;;) {
1910         /* NOTE: the audio packet can contain several frames */
1911         while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
1912             if (!is->frame) {
1913                 if (!(is->frame = avcodec_alloc_frame()))
1914                     return AVERROR(ENOMEM);
1915             } else
1916                 avcodec_get_frame_defaults(is->frame);
1917
1918             if (is->paused)
1919                 return -1;
1920
1921             if (flush_complete)
1922                 break;
1923             new_packet = 0;
1924             len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
1925             if (len1 < 0) {
1926                 /* if error, we skip the frame */
1927                 pkt_temp->size = 0;
1928                 break;
1929             }
1930
1931             pkt_temp->data += len1;
1932             pkt_temp->size -= len1;
1933
1934             if (!got_frame) {
1935                 /* stop sending empty packets if the decoder is finished */
1936                 if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
1937                     flush_complete = 1;
1938                 continue;
1939             }
1940             data_size = av_samples_get_buffer_size(NULL, dec->channels,
1941                                                    is->frame->nb_samples,
1942                                                    dec->sample_fmt, 1);
1943
1944             dec_channel_layout = (dec->channel_layout && dec->channels == av_get_channel_layout_nb_channels(dec->channel_layout)) ? dec->channel_layout : av_get_default_channel_layout(dec->channels);
1945             wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
1946
1947             if (dec->sample_fmt != is->audio_src.fmt ||
1948                 dec_channel_layout != is->audio_src.channel_layout ||
1949                 dec->sample_rate != is->audio_src.freq ||
1950                 (wanted_nb_samples != is->frame->nb_samples && !is->swr_ctx)) {
1951                 if (is->swr_ctx)
1952                     swr_free(&is->swr_ctx);
1953                 is->swr_ctx = swr_alloc_set_opts(NULL,
1954                                                  is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
1955                                                  dec_channel_layout,           dec->sample_fmt,   dec->sample_rate,
1956                                                  0, NULL);
1957                 if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
1958                     fprintf(stderr, "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
1959                         dec->sample_rate,
1960                         av_get_sample_fmt_name(dec->sample_fmt),
1961                         dec->channels,
1962                         is->audio_tgt.freq,
1963                         av_get_sample_fmt_name(is->audio_tgt.fmt),
1964                         is->audio_tgt.channels);
1965                     break;
1966                 }
1967                 is->audio_src.channel_layout = dec_channel_layout;
1968                 is->audio_src.channels = dec->channels;
1969                 is->audio_src.freq = dec->sample_rate;
1970                 is->audio_src.fmt = dec->sample_fmt;
1971             }
1972
1973             resampled_data_size = data_size;
1974             if (is->swr_ctx) {
1975                 const uint8_t *in[] = { is->frame->data[0] };
1976                 uint8_t *out[] = {is->audio_buf2};
1977                 if (wanted_nb_samples != is->frame->nb_samples) {
1978                     if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / dec->sample_rate,
1979                                                 wanted_nb_samples * is->audio_tgt.freq / dec->sample_rate) < 0) {
1980                         fprintf(stderr, "swr_set_compensation() failed\n");
1981                         break;
1982                     }
1983                 }
1984                 len2 = swr_convert(is->swr_ctx, out, sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt),
1985                                                 in, is->frame->nb_samples);
1986                 if (len2 < 0) {
1987                     fprintf(stderr, "audio_resample() failed\n");
1988                     break;
1989                 }
1990                 if (len2 == sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt)) {
1991                     fprintf(stderr, "warning: audio buffer is probably too small\n");
1992                     swr_init(is->swr_ctx);
1993                 }
1994                 is->audio_buf = is->audio_buf2;
1995                 resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
1996             } else {
1997                 is->audio_buf = is->frame->data[0];
1998             }
1999
2000             /* if no pts, then compute it */
2001             pts = is->audio_clock;
2002             *pts_ptr = pts;
2003             is->audio_clock += (double)data_size /
2004                 (dec->channels * dec->sample_rate * av_get_bytes_per_sample(dec->sample_fmt));
2005 #ifdef DEBUG
2006             {
2007                 static double last_clock;
2008                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2009                        is->audio_clock - last_clock,
2010                        is->audio_clock, pts);
2011                 last_clock = is->audio_clock;
2012             }
2013 #endif
2014             return resampled_data_size;
2015         }
2016
2017         /* free the current packet */
2018         if (pkt->data)
2019             av_free_packet(pkt);
2020         memset(pkt_temp, 0, sizeof(*pkt_temp));
2021
2022         if (is->paused || is->audioq.abort_request) {
2023             return -1;
2024         }
2025
2026         /* read next packet */
2027         if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
2028             return -1;
2029
2030         if (pkt->data == flush_pkt.data) {
2031             avcodec_flush_buffers(dec);
2032             flush_complete = 0;
2033         }
2034
2035         *pkt_temp = *pkt;
2036
2037         /* if update the audio clock with the pts */
2038         if (pkt->pts != AV_NOPTS_VALUE) {
2039             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2040         }
2041     }
2042 }
2043
2044 /* prepare a new audio buffer */
2045 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2046 {
2047     VideoState *is = opaque;
2048     int audio_size, len1;
2049     int bytes_per_sec;
2050     int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1);
2051     double pts;
2052
2053     audio_callback_time = av_gettime();
2054
2055     while (len > 0) {
2056         if (is->audio_buf_index >= is->audio_buf_size) {
2057            audio_size = audio_decode_frame(is, &pts);
2058            if (audio_size < 0) {
2059                 /* if error, just output silence */
2060                is->audio_buf      = is->silence_buf;
2061                is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size;
2062            } else {
2063                if (is->show_mode != SHOW_MODE_VIDEO)
2064                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2065                is->audio_buf_size = audio_size;
2066            }
2067            is->audio_buf_index = 0;
2068         }
2069         len1 = is->audio_buf_size - is->audio_buf_index;
2070         if (len1 > len)
2071             len1 = len;
2072         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2073         len -= len1;
2074         stream += len1;
2075         is->audio_buf_index += len1;
2076     }
2077     bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2078     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2079     /* Let's assume the audio driver that is used by SDL has two periods. */
2080     is->audio_current_pts = is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec;
2081     is->audio_current_pts_drift = is->audio_current_pts - audio_callback_time / 1000000.0;
2082 }
2083
2084 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2085 {
2086     SDL_AudioSpec wanted_spec, spec;
2087     const char *env;
2088     const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2089
2090     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2091     if (env) {
2092         wanted_nb_channels = SDL_atoi(env);
2093         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2094     }
2095     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2096         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2097         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2098     }
2099     wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2100     wanted_spec.freq = wanted_sample_rate;
2101     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2102         fprintf(stderr, "Invalid sample rate or channel count!\n");
2103         return -1;
2104     }
2105     wanted_spec.format = AUDIO_S16SYS;
2106     wanted_spec.silence = 0;
2107     wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2108     wanted_spec.callback = sdl_audio_callback;
2109     wanted_spec.userdata = opaque;
2110     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2111         fprintf(stderr, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError());
2112         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2113         if (!wanted_spec.channels) {
2114             fprintf(stderr, "No more channel combinations to try, audio open failed\n");
2115             return -1;
2116         }
2117         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2118     }
2119     if (spec.format != AUDIO_S16SYS) {
2120         fprintf(stderr, "SDL advised audio format %d is not supported!\n", spec.format);
2121         return -1;
2122     }
2123     if (spec.channels != wanted_spec.channels) {
2124         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2125         if (!wanted_channel_layout) {
2126             fprintf(stderr, "SDL advised channel count %d is not supported!\n", spec.channels);
2127             return -1;
2128         }
2129     }
2130
2131     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2132     audio_hw_params->freq = spec.freq;
2133     audio_hw_params->channel_layout = wanted_channel_layout;
2134     audio_hw_params->channels =  spec.channels;
2135     return spec.size;
2136 }
2137
2138 /* open a given stream. Return 0 if OK */
2139 static int stream_component_open(VideoState *is, int stream_index)
2140 {
2141     AVFormatContext *ic = is->ic;
2142     AVCodecContext *avctx;
2143     AVCodec *codec;
2144     AVDictionary *opts;
2145     AVDictionaryEntry *t = NULL;
2146
2147     if (stream_index < 0 || stream_index >= ic->nb_streams)
2148         return -1;
2149     avctx = ic->streams[stream_index]->codec;
2150
2151     codec = avcodec_find_decoder(avctx->codec_id);
2152     opts = filter_codec_opts(codec_opts, codec, ic, ic->streams[stream_index]);
2153
2154     switch(avctx->codec_type){
2155         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; if(audio_codec_name   ) codec= avcodec_find_decoder_by_name(   audio_codec_name); break;
2156         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; if(subtitle_codec_name) codec= avcodec_find_decoder_by_name(subtitle_codec_name); break;
2157         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; if(video_codec_name   ) codec= avcodec_find_decoder_by_name(   video_codec_name); break;
2158     }
2159     if (!codec)
2160         return -1;
2161
2162     avctx->workaround_bugs   = workaround_bugs;
2163     avctx->lowres            = lowres;
2164     if(avctx->lowres > codec->max_lowres){
2165         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2166                 codec->max_lowres);
2167         avctx->lowres= codec->max_lowres;
2168     }
2169     avctx->idct_algo         = idct;
2170     avctx->skip_frame        = skip_frame;
2171     avctx->skip_idct         = skip_idct;
2172     avctx->skip_loop_filter  = skip_loop_filter;
2173     avctx->error_concealment = error_concealment;
2174
2175     if(avctx->lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2176     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2177     if(codec->capabilities & CODEC_CAP_DR1)
2178         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2179
2180     if (!av_dict_get(opts, "threads", NULL, 0))
2181         av_dict_set(&opts, "threads", "auto", 0);
2182     if (!codec ||
2183         avcodec_open2(avctx, codec, &opts) < 0)
2184         return -1;
2185     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2186         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2187         return AVERROR_OPTION_NOT_FOUND;
2188     }
2189
2190     /* prepare audio output */
2191     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2192         int audio_hw_buf_size = audio_open(is, avctx->channel_layout, avctx->channels, avctx->sample_rate, &is->audio_src);
2193         if (audio_hw_buf_size < 0)
2194             return -1;
2195         is->audio_hw_buf_size = audio_hw_buf_size;
2196         is->audio_tgt = is->audio_src;
2197     }
2198
2199     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2200     switch (avctx->codec_type) {
2201     case AVMEDIA_TYPE_AUDIO:
2202         is->audio_stream = stream_index;
2203         is->audio_st = ic->streams[stream_index];
2204         is->audio_buf_size  = 0;
2205         is->audio_buf_index = 0;
2206
2207         /* init averaging filter */
2208         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2209         is->audio_diff_avg_count = 0;
2210         /* since we do not have a precise anough audio fifo fullness,
2211            we correct audio sync only if larger than this threshold */
2212         is->audio_diff_threshold = 2.0 * is->audio_hw_buf_size / av_samples_get_buffer_size(NULL, is->audio_tgt.channels, is->audio_tgt.freq, is->audio_tgt.fmt, 1);
2213
2214         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2215         memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
2216         packet_queue_start(&is->audioq);
2217         SDL_PauseAudio(0);
2218         break;
2219     case AVMEDIA_TYPE_VIDEO:
2220         is->video_stream = stream_index;
2221         is->video_st = ic->streams[stream_index];
2222
2223         packet_queue_start(&is->videoq);
2224         is->video_tid = SDL_CreateThread(video_thread, is);
2225         break;
2226     case AVMEDIA_TYPE_SUBTITLE:
2227         is->subtitle_stream = stream_index;
2228         is->subtitle_st = ic->streams[stream_index];
2229         packet_queue_start(&is->subtitleq);
2230
2231         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2232         break;
2233     default:
2234         break;
2235     }
2236     return 0;
2237 }
2238
2239 static void stream_component_close(VideoState *is, int stream_index)
2240 {
2241     AVFormatContext *ic = is->ic;
2242     AVCodecContext *avctx;
2243
2244     if (stream_index < 0 || stream_index >= ic->nb_streams)
2245         return;
2246     avctx = ic->streams[stream_index]->codec;
2247
2248     switch (avctx->codec_type) {
2249     case AVMEDIA_TYPE_AUDIO:
2250         packet_queue_abort(&is->audioq);
2251
2252         SDL_CloseAudio();
2253
2254         packet_queue_flush(&is->audioq);
2255         av_free_packet(&is->audio_pkt);
2256         if (is->swr_ctx)
2257             swr_free(&is->swr_ctx);
2258         av_freep(&is->audio_buf1);
2259         is->audio_buf = NULL;
2260         av_freep(&is->frame);
2261
2262         if (is->rdft) {
2263             av_rdft_end(is->rdft);
2264             av_freep(&is->rdft_data);
2265             is->rdft = NULL;
2266             is->rdft_bits = 0;
2267         }
2268         break;
2269     case AVMEDIA_TYPE_VIDEO:
2270         packet_queue_abort(&is->videoq);
2271
2272         /* note: we also signal this mutex to make sure we deblock the
2273            video thread in all cases */
2274         SDL_LockMutex(is->pictq_mutex);
2275         SDL_CondSignal(is->pictq_cond);
2276         SDL_UnlockMutex(is->pictq_mutex);
2277
2278         SDL_WaitThread(is->video_tid, NULL);
2279
2280         packet_queue_flush(&is->videoq);
2281         break;
2282     case AVMEDIA_TYPE_SUBTITLE:
2283         packet_queue_abort(&is->subtitleq);
2284
2285         /* note: we also signal this mutex to make sure we deblock the
2286            video thread in all cases */
2287         SDL_LockMutex(is->subpq_mutex);
2288         is->subtitle_stream_changed = 1;
2289
2290         SDL_CondSignal(is->subpq_cond);
2291         SDL_UnlockMutex(is->subpq_mutex);
2292
2293         SDL_WaitThread(is->subtitle_tid, NULL);
2294
2295         packet_queue_flush(&is->subtitleq);
2296         break;
2297     default:
2298         break;
2299     }
2300
2301     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2302     avcodec_close(avctx);
2303     free_buffer_pool(&is->buffer_pool);
2304     switch (avctx->codec_type) {
2305     case AVMEDIA_TYPE_AUDIO:
2306         is->audio_st = NULL;
2307         is->audio_stream = -1;
2308         break;
2309     case AVMEDIA_TYPE_VIDEO:
2310         is->video_st = NULL;
2311         is->video_stream = -1;
2312         break;
2313     case AVMEDIA_TYPE_SUBTITLE:
2314         is->subtitle_st = NULL;
2315         is->subtitle_stream = -1;
2316         break;
2317     default:
2318         break;
2319     }
2320 }
2321
2322 static int decode_interrupt_cb(void *ctx)
2323 {
2324     VideoState *is = ctx;
2325     return is->abort_request;
2326 }
2327
2328 /* this thread gets the stream from the disk or the network */
2329 static int read_thread(void *arg)
2330 {
2331     VideoState *is = arg;
2332     AVFormatContext *ic = NULL;
2333     int err, i, ret;
2334     int st_index[AVMEDIA_TYPE_NB];
2335     AVPacket pkt1, *pkt = &pkt1;
2336     int eof = 0;
2337     int pkt_in_play_range = 0;
2338     AVDictionaryEntry *t;
2339     AVDictionary **opts;
2340     int orig_nb_streams;
2341
2342     memset(st_index, -1, sizeof(st_index));
2343     is->last_video_stream = is->video_stream = -1;
2344     is->last_audio_stream = is->audio_stream = -1;
2345     is->last_subtitle_stream = is->subtitle_stream = -1;
2346
2347     ic = avformat_alloc_context();
2348     ic->interrupt_callback.callback = decode_interrupt_cb;
2349     ic->interrupt_callback.opaque = is;
2350     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2351     if (err < 0) {
2352         print_error(is->filename, err);
2353         ret = -1;
2354         goto fail;
2355     }
2356     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2357         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2358         ret = AVERROR_OPTION_NOT_FOUND;
2359         goto fail;
2360     }
2361     is->ic = ic;
2362
2363     if (genpts)
2364         ic->flags |= AVFMT_FLAG_GENPTS;
2365
2366     opts = setup_find_stream_info_opts(ic, codec_opts);
2367     orig_nb_streams = ic->nb_streams;
2368
2369     err = avformat_find_stream_info(ic, opts);
2370     if (err < 0) {
2371         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2372         ret = -1;
2373         goto fail;
2374     }
2375     for (i = 0; i < orig_nb_streams; i++)
2376         av_dict_free(&opts[i]);
2377     av_freep(&opts);
2378
2379     if (ic->pb)
2380         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
2381
2382     if (seek_by_bytes < 0)
2383         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2384
2385     /* if seeking requested, we execute it */
2386     if (start_time != AV_NOPTS_VALUE) {
2387         int64_t timestamp;
2388
2389         timestamp = start_time;
2390         /* add the stream start time */
2391         if (ic->start_time != AV_NOPTS_VALUE)
2392             timestamp += ic->start_time;
2393         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2394         if (ret < 0) {
2395             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2396                     is->filename, (double)timestamp / AV_TIME_BASE);
2397         }
2398     }
2399
2400     for (i = 0; i < ic->nb_streams; i++)
2401         ic->streams[i]->discard = AVDISCARD_ALL;
2402     if (!video_disable)
2403         st_index[AVMEDIA_TYPE_VIDEO] =
2404             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2405                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2406     if (!audio_disable)
2407         st_index[AVMEDIA_TYPE_AUDIO] =
2408             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2409                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2410                                 st_index[AVMEDIA_TYPE_VIDEO],
2411                                 NULL, 0);
2412     if (!video_disable)
2413         st_index[AVMEDIA_TYPE_SUBTITLE] =
2414             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2415                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2416                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2417                                  st_index[AVMEDIA_TYPE_AUDIO] :
2418                                  st_index[AVMEDIA_TYPE_VIDEO]),
2419                                 NULL, 0);
2420     if (show_status) {
2421         av_dump_format(ic, 0, is->filename, 0);
2422     }
2423
2424     is->show_mode = show_mode;
2425
2426     /* open the streams */
2427     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2428         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2429     }
2430
2431     ret = -1;
2432     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2433         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2434     }
2435     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2436     if (is->show_mode == SHOW_MODE_NONE)
2437         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2438
2439     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2440         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2441     }
2442
2443     if (is->video_stream < 0 && is->audio_stream < 0) {
2444         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2445         ret = -1;
2446         goto fail;
2447     }
2448
2449     for (;;) {
2450         if (is->abort_request)
2451             break;
2452         if (is->paused != is->last_paused) {
2453             is->last_paused = is->paused;
2454             if (is->paused)
2455                 is->read_pause_return = av_read_pause(ic);
2456             else
2457                 av_read_play(ic);
2458         }
2459 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2460         if (is->paused &&
2461                 (!strcmp(ic->iformat->name, "rtsp") ||
2462                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2463             /* wait 10 ms to avoid trying to get another packet */
2464             /* XXX: horrible */
2465             SDL_Delay(10);
2466             continue;
2467         }
2468 #endif
2469         if (is->seek_req) {
2470             int64_t seek_target = is->seek_pos;
2471             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2472             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2473 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2474 //      of the seek_pos/seek_rel variables
2475
2476             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2477             if (ret < 0) {
2478                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2479             } else {
2480                 if (is->audio_stream >= 0) {
2481                     packet_queue_flush(&is->audioq);
2482                     packet_queue_put(&is->audioq, &flush_pkt);
2483                 }
2484                 if (is->subtitle_stream >= 0) {
2485                     packet_queue_flush(&is->subtitleq);
2486                     packet_queue_put(&is->subtitleq, &flush_pkt);
2487                 }
2488                 if (is->video_stream >= 0) {
2489                     packet_queue_flush(&is->videoq);
2490                     packet_queue_put(&is->videoq, &flush_pkt);
2491                 }
2492             }
2493             is->seek_req = 0;
2494             eof = 0;
2495         }
2496
2497         /* if the queue are full, no need to read more */
2498         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2499             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
2500                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request)
2501                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request))) {
2502             /* wait 10 ms */
2503             SDL_Delay(10);
2504             continue;
2505         }
2506         if (eof) {
2507             if (is->video_stream >= 0) {
2508                 av_init_packet(pkt);
2509                 pkt->data = NULL;
2510                 pkt->size = 0;
2511                 pkt->stream_index = is->video_stream;
2512                 packet_queue_put(&is->videoq, pkt);
2513             }
2514             if (is->audio_stream >= 0 &&
2515                 is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
2516                 av_init_packet(pkt);
2517                 pkt->data = NULL;
2518                 pkt->size = 0;
2519                 pkt->stream_index = is->audio_stream;
2520                 packet_queue_put(&is->audioq, pkt);
2521             }
2522             SDL_Delay(10);
2523             if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2524                 if (loop != 1 && (!loop || --loop)) {
2525                     stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2526                 } else if (autoexit) {
2527                     ret = AVERROR_EOF;
2528                     goto fail;
2529                 }
2530             }
2531             eof=0;
2532             continue;
2533         }
2534         ret = av_read_frame(ic, pkt);
2535         if (ret < 0) {
2536             if (ret == AVERROR_EOF || url_feof(ic->pb))
2537                 eof = 1;
2538             if (ic->pb && ic->pb->error)
2539                 break;
2540             SDL_Delay(100); /* wait for user event */
2541             continue;
2542         }
2543         /* check if packet is in play range specified by user, then queue, otherwise discard */
2544         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2545                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2546                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2547                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2548                 <= ((double)duration / 1000000);
2549         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2550             packet_queue_put(&is->audioq, pkt);
2551         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2552             packet_queue_put(&is->videoq, pkt);
2553         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2554             packet_queue_put(&is->subtitleq, pkt);
2555         } else {
2556             av_free_packet(pkt);
2557         }
2558     }
2559     /* wait until the end */
2560     while (!is->abort_request) {
2561         SDL_Delay(100);
2562     }
2563
2564     ret = 0;
2565  fail:
2566     /* close each stream */
2567     if (is->audio_stream >= 0)
2568         stream_component_close(is, is->audio_stream);
2569     if (is->video_stream >= 0)
2570         stream_component_close(is, is->video_stream);
2571     if (is->subtitle_stream >= 0)
2572         stream_component_close(is, is->subtitle_stream);
2573     if (is->ic) {
2574         avformat_close_input(&is->ic);
2575     }
2576
2577     if (ret != 0) {
2578         SDL_Event event;
2579
2580         event.type = FF_QUIT_EVENT;
2581         event.user.data1 = is;
2582         SDL_PushEvent(&event);
2583     }
2584     return 0;
2585 }
2586
2587 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2588 {
2589     VideoState *is;
2590
2591     is = av_mallocz(sizeof(VideoState));
2592     if (!is)
2593         return NULL;
2594     av_strlcpy(is->filename, filename, sizeof(is->filename));
2595     is->iformat = iformat;
2596     is->ytop    = 0;
2597     is->xleft   = 0;
2598
2599     /* start video display */
2600     is->pictq_mutex = SDL_CreateMutex();
2601     is->pictq_cond  = SDL_CreateCond();
2602
2603     is->subpq_mutex = SDL_CreateMutex();
2604     is->subpq_cond  = SDL_CreateCond();
2605
2606     packet_queue_init(&is->videoq);
2607     packet_queue_init(&is->audioq);
2608     packet_queue_init(&is->subtitleq);
2609
2610     is->av_sync_type = av_sync_type;
2611     is->read_tid     = SDL_CreateThread(read_thread, is);
2612     if (!is->read_tid) {
2613         av_free(is);
2614         return NULL;
2615     }
2616     return is;
2617 }
2618
2619 static void stream_cycle_channel(VideoState *is, int codec_type)
2620 {
2621     AVFormatContext *ic = is->ic;
2622     int start_index, stream_index;
2623     int old_index;
2624     AVStream *st;
2625
2626     if (codec_type == AVMEDIA_TYPE_VIDEO) {
2627         start_index = is->last_video_stream;
2628         old_index = is->video_stream;
2629     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
2630         start_index = is->last_audio_stream;
2631         old_index = is->audio_stream;
2632     } else {
2633         start_index = is->last_subtitle_stream;
2634         old_index = is->subtitle_stream;
2635     }
2636     stream_index = start_index;
2637     for (;;) {
2638         if (++stream_index >= is->ic->nb_streams)
2639         {
2640             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2641             {
2642                 stream_index = -1;
2643                 is->last_subtitle_stream = -1;
2644                 goto the_end;
2645             }
2646             if (start_index == -1)
2647                 return;
2648             stream_index = 0;
2649         }
2650         if (stream_index == start_index)
2651             return;
2652         st = ic->streams[stream_index];
2653         if (st->codec->codec_type == codec_type) {
2654             /* check that parameters are OK */
2655             switch (codec_type) {
2656             case AVMEDIA_TYPE_AUDIO:
2657                 if (st->codec->sample_rate != 0 &&
2658                     st->codec->channels != 0)
2659                     goto the_end;
2660                 break;
2661             case AVMEDIA_TYPE_VIDEO:
2662             case AVMEDIA_TYPE_SUBTITLE:
2663                 goto the_end;
2664             default:
2665                 break;
2666             }
2667         }
2668     }
2669  the_end:
2670     stream_component_close(is, old_index);
2671     stream_component_open(is, stream_index);
2672 }
2673
2674
2675 static void toggle_full_screen(VideoState *is)
2676 {
2677     av_unused int i;
2678     is_full_screen = !is_full_screen;
2679 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2680     /* OS X needs to reallocate the SDL overlays */
2681     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
2682         is->pictq[i].reallocate = 1;
2683     }
2684 #endif
2685     video_open(is, 1);
2686 }
2687
2688 static void toggle_pause(VideoState *is)
2689 {
2690     stream_toggle_pause(is);
2691     is->step = 0;
2692 }
2693
2694 static void step_to_next_frame(VideoState *is)
2695 {
2696     /* if the stream is paused unpause it, then step */
2697     if (is->paused)
2698         stream_toggle_pause(is);
2699     is->step = 1;
2700 }
2701
2702 static void toggle_audio_display(VideoState *is)
2703 {
2704     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2705     is->show_mode = (is->show_mode + 1) % SHOW_MODE_NB;
2706     fill_rectangle(screen,
2707                 is->xleft, is->ytop, is->width, is->height,
2708                 bgcolor);
2709     SDL_UpdateRect(screen, is->xleft, is->ytop, is->width, is->height);
2710 }
2711
2712 /* handle an event sent by the GUI */
2713 static void event_loop(VideoState *cur_stream)
2714 {
2715     SDL_Event event;
2716     double incr, pos, frac;
2717
2718     for (;;) {
2719         double x;
2720         SDL_WaitEvent(&event);
2721         switch (event.type) {
2722         case SDL_KEYDOWN:
2723             if (exit_on_keydown) {
2724                 do_exit(cur_stream);
2725                 break;
2726             }
2727             switch (event.key.keysym.sym) {
2728             case SDLK_ESCAPE:
2729             case SDLK_q:
2730                 do_exit(cur_stream);
2731                 break;
2732             case SDLK_f:
2733                 toggle_full_screen(cur_stream);
2734                 cur_stream->force_refresh = 1;
2735                 break;
2736             case SDLK_p:
2737             case SDLK_SPACE:
2738                 toggle_pause(cur_stream);
2739                 break;
2740             case SDLK_s: // S: Step to next frame
2741                 step_to_next_frame(cur_stream);
2742                 break;
2743             case SDLK_a:
2744                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2745                 break;
2746             case SDLK_v:
2747                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2748                 break;
2749             case SDLK_t:
2750                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2751                 break;
2752             case SDLK_w:
2753                 toggle_audio_display(cur_stream);
2754                 cur_stream->force_refresh = 1;
2755                 break;
2756             case SDLK_PAGEUP:
2757                 incr = 600.0;
2758                 goto do_seek;
2759             case SDLK_PAGEDOWN:
2760                 incr = -600.0;
2761                 goto do_seek;
2762             case SDLK_LEFT:
2763                 incr = -10.0;
2764                 goto do_seek;
2765             case SDLK_RIGHT:
2766                 incr = 10.0;
2767                 goto do_seek;
2768             case SDLK_UP:
2769                 incr = 60.0;
2770                 goto do_seek;
2771             case SDLK_DOWN:
2772                 incr = -60.0;
2773             do_seek:
2774                     if (seek_by_bytes) {
2775                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2776                             pos = cur_stream->video_current_pos;
2777                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2778                             pos = cur_stream->audio_pkt.pos;
2779                         } else
2780                             pos = avio_tell(cur_stream->ic->pb);
2781                         if (cur_stream->ic->bit_rate)
2782                             incr *= cur_stream->ic->bit_rate / 8.0;
2783                         else
2784                             incr *= 180000.0;
2785                         pos += incr;
2786                         stream_seek(cur_stream, pos, incr, 1);
2787                     } else {
2788                         pos = get_master_clock(cur_stream);
2789                         pos += incr;
2790                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2791                     }
2792                 break;
2793             default:
2794                 break;
2795             }
2796             break;
2797         case SDL_VIDEOEXPOSE:
2798             cur_stream->force_refresh = 1;
2799             break;
2800         case SDL_MOUSEBUTTONDOWN:
2801             if (exit_on_mousedown) {
2802                 do_exit(cur_stream);
2803                 break;
2804             }
2805         case SDL_MOUSEMOTION:
2806             if (event.type == SDL_MOUSEBUTTONDOWN) {
2807                 x = event.button.x;
2808             } else {
2809                 if (event.motion.state != SDL_PRESSED)
2810                     break;
2811                 x = event.motion.x;
2812             }
2813                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2814                     uint64_t size =  avio_size(cur_stream->ic->pb);
2815                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2816                 } else {
2817                     int64_t ts;
2818                     int ns, hh, mm, ss;
2819                     int tns, thh, tmm, tss;
2820                     tns  = cur_stream->ic->duration / 1000000LL;
2821                     thh  = tns / 3600;
2822                     tmm  = (tns % 3600) / 60;
2823                     tss  = (tns % 60);
2824                     frac = x / cur_stream->width;
2825                     ns   = frac * tns;
2826                     hh   = ns / 3600;
2827                     mm   = (ns % 3600) / 60;
2828                     ss   = (ns % 60);
2829                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2830                             hh, mm, ss, thh, tmm, tss);
2831                     ts = frac * cur_stream->ic->duration;
2832                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2833                         ts += cur_stream->ic->start_time;
2834                     stream_seek(cur_stream, ts, 0, 0);
2835                 }
2836             break;
2837         case SDL_VIDEORESIZE:
2838                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2839                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2840                 screen_width  = cur_stream->width  = event.resize.w;
2841                 screen_height = cur_stream->height = event.resize.h;
2842                 cur_stream->force_refresh = 1;
2843             break;
2844         case SDL_QUIT:
2845         case FF_QUIT_EVENT:
2846             do_exit(cur_stream);
2847             break;
2848         case FF_ALLOC_EVENT:
2849             alloc_picture(event.user.data1);
2850             break;
2851         case FF_REFRESH_EVENT:
2852             video_refresh(event.user.data1);
2853             cur_stream->refresh = 0;
2854             break;
2855         default:
2856             break;
2857         }
2858     }
2859 }
2860
2861 static int opt_frame_size(const char *opt, const char *arg)
2862 {
2863     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
2864     return opt_default("video_size", arg);
2865 }
2866
2867 static int opt_width(const char *opt, const char *arg)
2868 {
2869     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2870     return 0;
2871 }
2872
2873 static int opt_height(const char *opt, const char *arg)
2874 {
2875     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2876     return 0;
2877 }
2878
2879 static int opt_format(const char *opt, const char *arg)
2880 {
2881     file_iformat = av_find_input_format(arg);
2882     if (!file_iformat) {
2883         fprintf(stderr, "Unknown input format: %s\n", arg);
2884         return AVERROR(EINVAL);
2885     }
2886     return 0;
2887 }
2888
2889 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2890 {
2891     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
2892     return opt_default("pixel_format", arg);
2893 }
2894
2895 static int opt_sync(const char *opt, const char *arg)
2896 {
2897     if (!strcmp(arg, "audio"))
2898         av_sync_type = AV_SYNC_AUDIO_MASTER;
2899     else if (!strcmp(arg, "video"))
2900         av_sync_type = AV_SYNC_VIDEO_MASTER;
2901     else if (!strcmp(arg, "ext"))
2902         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2903     else {
2904         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2905         exit(1);
2906     }
2907     return 0;
2908 }
2909
2910 static int opt_seek(const char *opt, const char *arg)
2911 {
2912     start_time = parse_time_or_die(opt, arg, 1);
2913     return 0;
2914 }
2915
2916 static int opt_duration(const char *opt, const char *arg)
2917 {
2918     duration = parse_time_or_die(opt, arg, 1);
2919     return 0;
2920 }
2921
2922 static int opt_show_mode(const char *opt, const char *arg)
2923 {
2924     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
2925                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
2926                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
2927                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
2928     return 0;
2929 }
2930
2931 static void opt_input_file(void *optctx, const char *filename)
2932 {
2933     if (input_filename) {
2934         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2935                 filename, input_filename);
2936         exit_program(1);
2937     }
2938     if (!strcmp(filename, "-"))
2939         filename = "pipe:";
2940     input_filename = filename;
2941 }
2942
2943 static int opt_codec(void *o, const char *opt, const char *arg)
2944 {
2945     switch(opt[strlen(opt)-1]){
2946     case 'a' :    audio_codec_name = arg; break;
2947     case 's' : subtitle_codec_name = arg; break;
2948     case 'v' :    video_codec_name = arg; break;
2949     }
2950     return 0;
2951 }
2952
2953 static int dummy;
2954
2955 static const OptionDef options[] = {
2956 #include "cmdutils_common_opts.h"
2957     { "x", HAS_ARG, { (void*)opt_width }, "force displayed width", "width" },
2958     { "y", HAS_ARG, { (void*)opt_height }, "force displayed height", "height" },
2959     { "s", HAS_ARG | OPT_VIDEO, { (void*)opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2960     { "fs", OPT_BOOL, { (void*)&is_full_screen }, "force full screen" },
2961     { "an", OPT_BOOL, { (void*)&audio_disable }, "disable audio" },
2962     { "vn", OPT_BOOL, { (void*)&video_disable }, "disable video" },
2963     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2964     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2965     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2966     { "ss", HAS_ARG, { (void*)&opt_seek }, "seek to a given position in seconds", "pos" },
2967     { "t", HAS_ARG, { (void*)&opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
2968     { "bytes", OPT_INT | HAS_ARG, { (void*)&seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2969     { "nodisp", OPT_BOOL, { (void*)&display_disable }, "disable graphical display" },
2970     { "f", HAS_ARG, { (void*)opt_format }, "force format", "fmt" },
2971     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { (void*)opt_frame_pix_fmt }, "set pixel format", "format" },
2972     { "stats", OPT_BOOL | OPT_EXPERT, { (void*)&show_status }, "show status", "" },
2973     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&workaround_bugs }, "workaround bugs", "" },
2974     { "fast", OPT_BOOL | OPT_EXPERT, { (void*)&fast }, "non spec compliant optimizations", "" },
2975     { "genpts", OPT_BOOL | OPT_EXPERT, { (void*)&genpts }, "generate pts", "" },
2976     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2977     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&lowres }, "", "" },
2978     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_loop_filter }, "", "" },
2979     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_frame }, "", "" },
2980     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_idct }, "", "" },
2981     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&idct }, "set idct algo",  "algo" },
2982     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&error_concealment }, "set error concealment options",  "bit_mask" },
2983     { "sync", HAS_ARG | OPT_EXPERT, { (void*)opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
2984     { "autoexit", OPT_BOOL | OPT_EXPERT, { (void*)&autoexit }, "exit at the end", "" },
2985     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_keydown }, "exit on key down", "" },
2986     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_mousedown }, "exit on mouse down", "" },
2987     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&loop }, "set number of times the playback shall be looped", "loop count" },
2988     { "framedrop", OPT_BOOL | OPT_EXPERT, { (void*)&framedrop }, "drop frames when cpu is too slow", "" },
2989     { "window_title", OPT_STRING | HAS_ARG, { (void*)&window_title }, "set window title", "window title" },
2990 #if CONFIG_AVFILTER
2991     { "vf", OPT_STRING | HAS_ARG, { (void*)&vfilters }, "video filters", "filter list" },
2992 #endif
2993     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { (void*)&rdftspeed }, "rdft speed", "msecs" },
2994     { "showmode", HAS_ARG, {(void*)opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
2995     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { (void*)opt_default }, "generic catch all option", "" },
2996     { "i", OPT_BOOL, {(void *)&dummy}, "read specified file", "input_file"},
2997     { "codec", HAS_ARG | OPT_FUNC2, {(void*)opt_codec}, "force decoder", "decoder" },
2998     { NULL, },
2999 };
3000
3001 static void show_usage(void)
3002 {
3003     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3004     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3005     av_log(NULL, AV_LOG_INFO, "\n");
3006 }
3007
3008 static int opt_help(const char *opt, const char *arg)
3009 {
3010     av_log_set_callback(log_callback_help);
3011     show_usage();
3012     show_help_options(options, "Main options:\n",
3013                       OPT_EXPERT, 0);
3014     show_help_options(options, "\nAdvanced options:\n",
3015                       OPT_EXPERT, OPT_EXPERT);
3016     printf("\n");
3017     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3018     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3019 #if !CONFIG_AVFILTER
3020     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3021 #endif
3022     printf("\nWhile playing:\n"
3023            "q, ESC              quit\n"
3024            "f                   toggle full screen\n"
3025            "p, SPC              pause\n"
3026            "a                   cycle audio channel\n"
3027            "v                   cycle video channel\n"
3028            "t                   cycle subtitle channel\n"
3029            "w                   show audio waves\n"
3030            "s                   activate frame-step mode\n"
3031            "left/right          seek backward/forward 10 seconds\n"
3032            "down/up             seek backward/forward 1 minute\n"
3033            "page down/page up   seek backward/forward 10 minutes\n"
3034            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3035            );
3036     return 0;
3037 }
3038
3039 static int lockmgr(void **mtx, enum AVLockOp op)
3040 {
3041    switch(op) {
3042       case AV_LOCK_CREATE:
3043           *mtx = SDL_CreateMutex();
3044           if(!*mtx)
3045               return 1;
3046           return 0;
3047       case AV_LOCK_OBTAIN:
3048           return !!SDL_LockMutex(*mtx);
3049       case AV_LOCK_RELEASE:
3050           return !!SDL_UnlockMutex(*mtx);
3051       case AV_LOCK_DESTROY:
3052           SDL_DestroyMutex(*mtx);
3053           return 0;
3054    }
3055    return 1;
3056 }
3057
3058 /* Called from the main */
3059 int main(int argc, char **argv)
3060 {
3061     int flags;
3062     VideoState *is;
3063     char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy";
3064
3065     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3066     parse_loglevel(argc, argv, options);
3067
3068     /* register all codecs, demux and protocols */
3069     avcodec_register_all();
3070 #if CONFIG_AVDEVICE
3071     avdevice_register_all();
3072 #endif
3073 #if CONFIG_AVFILTER
3074     avfilter_register_all();
3075 #endif
3076     av_register_all();
3077     avformat_network_init();
3078
3079     init_opts();
3080
3081     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
3082     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
3083
3084     show_banner(argc, argv, options);
3085
3086     parse_options(NULL, argc, argv, options, opt_input_file);
3087
3088     if (!input_filename) {
3089         show_usage();
3090         fprintf(stderr, "An input file must be specified\n");
3091         fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3092         exit(1);
3093     }
3094
3095     if (display_disable) {
3096         video_disable = 1;
3097     }
3098     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3099     if (audio_disable)
3100         flags &= ~SDL_INIT_AUDIO;
3101     if (display_disable)
3102         SDL_putenv(dummy_videodriver); /* For the event queue, we always need a video driver. */
3103 #if !defined(__MINGW32__) && !defined(__APPLE__)
3104     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3105 #endif
3106     if (SDL_Init (flags)) {
3107         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3108         fprintf(stderr, "(Did you set the DISPLAY variable?)\n");
3109         exit(1);
3110     }
3111
3112     if (!display_disable) {
3113 #if HAVE_SDL_VIDEO_SIZE
3114         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3115         fs_screen_width = vi->current_w;
3116         fs_screen_height = vi->current_h;
3117 #endif
3118     }
3119
3120     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3121     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3122     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3123
3124     if (av_lockmgr_register(lockmgr)) {
3125         fprintf(stderr, "Could not initialize lock manager!\n");
3126         do_exit(NULL);
3127     }
3128
3129     av_init_packet(&flush_pkt);
3130     flush_pkt.data = (char *)(intptr_t)"FLUSH";
3131
3132     is = stream_open(input_filename, file_iformat);
3133     if (!is) {
3134         fprintf(stderr, "Failed to initialize VideoState!\n");
3135         do_exit(NULL);
3136     }
3137
3138     event_loop(is);
3139
3140     /* never returns */
3141
3142     return 0;
3143 }