afd8f9c111ac26c43024d0246adf55ed123847fa
[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     if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0)
1508         return 0;
1509
1510     if (got_picture) {
1511         int ret = 1;
1512
1513         if (decoder_reorder_pts == -1) {
1514             *pts = av_frame_get_best_effort_timestamp(frame);
1515         } else if (decoder_reorder_pts) {
1516             *pts = frame->pkt_pts;
1517         } else {
1518             *pts = frame->pkt_dts;
1519         }
1520
1521         if (*pts == AV_NOPTS_VALUE) {
1522             *pts = 0;
1523         }
1524
1525         if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) || is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK) &&
1526              (framedrop>0 || (framedrop && is->audio_st))) {
1527             SDL_LockMutex(is->pictq_mutex);
1528             if (is->frame_last_pts != AV_NOPTS_VALUE && *pts) {
1529                 double clockdiff = get_video_clock(is) - get_master_clock(is);
1530                 double dpts = av_q2d(is->video_st->time_base) * *pts;
1531                 double ptsdiff = dpts - is->frame_last_pts;
1532                 if (fabs(clockdiff) < AV_NOSYNC_THRESHOLD &&
1533                      ptsdiff > 0 && ptsdiff < AV_NOSYNC_THRESHOLD &&
1534                      clockdiff + ptsdiff - is->frame_last_filter_delay < 0) {
1535                     is->frame_last_dropped_pos = pkt->pos;
1536                     is->frame_last_dropped_pts = dpts;
1537                     is->frame_drops_early++;
1538                     ret = 0;
1539                 }
1540             }
1541             SDL_UnlockMutex(is->pictq_mutex);
1542         }
1543
1544         return ret;
1545     }
1546     return 0;
1547 }
1548
1549 #if CONFIG_AVFILTER
1550 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1551 {
1552     static const enum PixelFormat pix_fmts[] = { PIX_FMT_YUV420P, PIX_FMT_NONE };
1553     char sws_flags_str[128];
1554     char buffersrc_args[256];
1555     int ret;
1556     AVBufferSinkParams *buffersink_params = av_buffersink_params_alloc();
1557     AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_format;
1558     AVCodecContext *codec = is->video_st->codec;
1559
1560     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1561     graph->scale_sws_opts = av_strdup(sws_flags_str);
1562
1563     snprintf(buffersrc_args, sizeof(buffersrc_args),
1564              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1565              codec->width, codec->height, codec->pix_fmt,
1566              is->video_st->time_base.num, is->video_st->time_base.den,
1567              codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
1568
1569
1570     if ((ret = avfilter_graph_create_filter(&filt_src,
1571                                             avfilter_get_by_name("buffer"),
1572                                             "src", buffersrc_args, NULL,
1573                                             graph)) < 0)
1574         return ret;
1575
1576 #if FF_API_OLD_VSINK_API
1577     ret = avfilter_graph_create_filter(&filt_out,
1578                                        avfilter_get_by_name("buffersink"),
1579                                        "out", NULL, pix_fmts, graph);
1580 #else
1581     buffersink_params->pixel_fmts = pix_fmts;
1582     ret = avfilter_graph_create_filter(&filt_out,
1583                                        avfilter_get_by_name("buffersink"),
1584                                        "out", NULL, buffersink_params, graph);
1585 #endif
1586     av_freep(&buffersink_params);
1587     if (ret < 0)
1588         return ret;
1589
1590     if ((ret = avfilter_graph_create_filter(&filt_format,
1591                                             avfilter_get_by_name("format"),
1592                                             "format", "yuv420p", NULL, graph)) < 0)
1593         return ret;
1594     if ((ret = avfilter_link(filt_format, 0, filt_out, 0)) < 0)
1595         return ret;
1596
1597
1598     if (vfilters) {
1599         AVFilterInOut *outputs = avfilter_inout_alloc();
1600         AVFilterInOut *inputs  = avfilter_inout_alloc();
1601
1602         outputs->name    = av_strdup("in");
1603         outputs->filter_ctx = filt_src;
1604         outputs->pad_idx = 0;
1605         outputs->next    = NULL;
1606
1607         inputs->name    = av_strdup("out");
1608         inputs->filter_ctx = filt_format;
1609         inputs->pad_idx = 0;
1610         inputs->next    = NULL;
1611
1612         if ((ret = avfilter_graph_parse(graph, vfilters, &inputs, &outputs, NULL)) < 0)
1613             return ret;
1614     } else {
1615         if ((ret = avfilter_link(filt_src, 0, filt_format, 0)) < 0)
1616             return ret;
1617     }
1618
1619     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1620         return ret;
1621
1622     is->in_video_filter  = filt_src;
1623     is->out_video_filter = filt_out;
1624
1625     if (codec->codec->capabilities & CODEC_CAP_DR1) {
1626         is->use_dr1 = 1;
1627         codec->get_buffer     = codec_get_buffer;
1628         codec->release_buffer = codec_release_buffer;
1629         codec->opaque         = &is->buffer_pool;
1630     }
1631
1632     return ret;
1633 }
1634
1635 #endif  /* CONFIG_AVFILTER */
1636
1637 static int video_thread(void *arg)
1638 {
1639     VideoState *is = arg;
1640     AVFrame *frame = avcodec_alloc_frame();
1641     int64_t pts_int = AV_NOPTS_VALUE, pos = -1;
1642     double pts;
1643     int ret;
1644
1645 #if CONFIG_AVFILTER
1646     AVFilterGraph *graph = avfilter_graph_alloc();
1647     AVFilterContext *filt_out = NULL, *filt_in = NULL;
1648     int last_w = is->video_st->codec->width;
1649     int last_h = is->video_st->codec->height;
1650     enum PixelFormat last_format = is->video_st->codec->pix_fmt;
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         avcodec_get_frame_defaults(frame);
1673         ret = get_video_frame(is, frame, &pts_int, &pkt);
1674         if (ret < 0)
1675             goto the_end;
1676
1677         if (!ret) {
1678             av_free_packet(&pkt);
1679             continue;
1680         }
1681
1682 #if CONFIG_AVFILTER
1683         if (   last_w != is->video_st->codec->width
1684             || last_h != is->video_st->codec->height
1685             || last_format != is->video_st->codec->pix_fmt) {
1686             av_log(NULL, AV_LOG_INFO, "Frame changed from size:%dx%d to size:%dx%d\n",
1687                    last_w, last_h, is->video_st->codec->width, is->video_st->codec->height);
1688             avfilter_graph_free(&graph);
1689             graph = avfilter_graph_alloc();
1690             if ((ret = configure_video_filters(graph, is, vfilters)) < 0) {
1691                 av_free_packet(&pkt);
1692                 goto the_end;
1693             }
1694             filt_in  = is->in_video_filter;
1695             filt_out = is->out_video_filter;
1696             last_w = is->video_st->codec->width;
1697             last_h = is->video_st->codec->height;
1698             last_format = is->video_st->codec->pix_fmt;
1699         }
1700
1701         frame->pts = pts_int;
1702         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1703         if (is->use_dr1) {
1704             FrameBuffer      *buf = frame->opaque;
1705             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1706                                         frame->data, frame->linesize,
1707                                         AV_PERM_READ | AV_PERM_PRESERVE,
1708                                         frame->width, frame->height,
1709                                         frame->format);
1710
1711             avfilter_copy_frame_props(fb, frame);
1712             fb->buf->priv           = buf;
1713             fb->buf->free           = filter_release_buffer;
1714
1715             buf->refcount++;
1716             av_buffersrc_buffer(filt_in, fb);
1717
1718         } else
1719             av_buffersrc_write_frame(filt_in, frame);
1720
1721         av_free_packet(&pkt);
1722
1723         while (ret >= 0) {
1724             is->frame_last_returned_time = av_gettime() / 1000000.0;
1725
1726             ret = av_buffersink_get_buffer_ref(filt_out, &picref, 0);
1727             if (ret < 0) {
1728                 ret = 0;
1729                 break;
1730             }
1731
1732             is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time;
1733             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
1734                 is->frame_last_filter_delay = 0;
1735
1736             avfilter_fill_frame_from_video_buffer_ref(frame, picref);
1737
1738             pts_int = picref->pts;
1739             tb      = filt_out->inputs[0]->time_base;
1740             pos     = picref->pos;
1741             frame->opaque = picref;
1742
1743             if (av_cmp_q(tb, is->video_st->time_base)) {
1744                 av_unused int64_t pts1 = pts_int;
1745                 pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1746                 av_dlog(NULL, "video_thread(): "
1747                         "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1748                         tb.num, tb.den, pts1,
1749                         is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1750             }
1751             pts = pts_int * av_q2d(is->video_st->time_base);
1752             ret = queue_picture(is, frame, pts, pos);
1753         }
1754 #else
1755         pts = pts_int * av_q2d(is->video_st->time_base);
1756         ret = queue_picture(is, frame, pts, pkt.pos);
1757 #endif
1758
1759         if (ret < 0)
1760             goto the_end;
1761
1762         if (is->step)
1763             stream_toggle_pause(is);
1764     }
1765  the_end:
1766     avcodec_flush_buffers(is->video_st->codec);
1767 #if CONFIG_AVFILTER
1768     av_freep(&vfilters);
1769     avfilter_graph_free(&graph);
1770 #endif
1771     av_free(frame);
1772     return 0;
1773 }
1774
1775 static int subtitle_thread(void *arg)
1776 {
1777     VideoState *is = arg;
1778     SubPicture *sp;
1779     AVPacket pkt1, *pkt = &pkt1;
1780     int got_subtitle;
1781     double pts;
1782     int i, j;
1783     int r, g, b, y, u, v, a;
1784
1785     for (;;) {
1786         while (is->paused && !is->subtitleq.abort_request) {
1787             SDL_Delay(10);
1788         }
1789         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1790             break;
1791
1792         if (pkt->data == flush_pkt.data) {
1793             avcodec_flush_buffers(is->subtitle_st->codec);
1794             continue;
1795         }
1796         SDL_LockMutex(is->subpq_mutex);
1797         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1798                !is->subtitleq.abort_request) {
1799             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1800         }
1801         SDL_UnlockMutex(is->subpq_mutex);
1802
1803         if (is->subtitleq.abort_request)
1804             return 0;
1805
1806         sp = &is->subpq[is->subpq_windex];
1807
1808        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1809            this packet, if any */
1810         pts = 0;
1811         if (pkt->pts != AV_NOPTS_VALUE)
1812             pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
1813
1814         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1815                                  &got_subtitle, pkt);
1816
1817         if (got_subtitle && sp->sub.format == 0) {
1818             sp->pts = pts;
1819
1820             for (i = 0; i < sp->sub.num_rects; i++)
1821             {
1822                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1823                 {
1824                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1825                     y = RGB_TO_Y_CCIR(r, g, b);
1826                     u = RGB_TO_U_CCIR(r, g, b, 0);
1827                     v = RGB_TO_V_CCIR(r, g, b, 0);
1828                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1829                 }
1830             }
1831
1832             /* now we can update the picture count */
1833             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1834                 is->subpq_windex = 0;
1835             SDL_LockMutex(is->subpq_mutex);
1836             is->subpq_size++;
1837             SDL_UnlockMutex(is->subpq_mutex);
1838         }
1839         av_free_packet(pkt);
1840     }
1841     return 0;
1842 }
1843
1844 /* copy samples for viewing in editor window */
1845 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1846 {
1847     int size, len;
1848
1849     size = samples_size / sizeof(short);
1850     while (size > 0) {
1851         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1852         if (len > size)
1853             len = size;
1854         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1855         samples += len;
1856         is->sample_array_index += len;
1857         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1858             is->sample_array_index = 0;
1859         size -= len;
1860     }
1861 }
1862
1863 /* return the wanted number of samples to get better sync if sync_type is video
1864  * or external master clock */
1865 static int synchronize_audio(VideoState *is, int nb_samples)
1866 {
1867     int wanted_nb_samples = nb_samples;
1868
1869     /* if not master, then we try to remove or add samples to correct the clock */
1870     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1871          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1872         double diff, avg_diff;
1873         int min_nb_samples, max_nb_samples;
1874
1875         diff = get_audio_clock(is) - get_master_clock(is);
1876
1877         if (diff < AV_NOSYNC_THRESHOLD) {
1878             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1879             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1880                 /* not enough measures to have a correct estimate */
1881                 is->audio_diff_avg_count++;
1882             } else {
1883                 /* estimate the A-V difference */
1884                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1885
1886                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1887                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
1888                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
1889                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
1890                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
1891                 }
1892                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1893                         diff, avg_diff, wanted_nb_samples - nb_samples,
1894                         is->audio_clock, is->video_clock, is->audio_diff_threshold);
1895             }
1896         } else {
1897             /* too big difference : may be initial PTS errors, so
1898                reset A-V filter */
1899             is->audio_diff_avg_count = 0;
1900             is->audio_diff_cum       = 0;
1901         }
1902     }
1903
1904     return wanted_nb_samples;
1905 }
1906
1907 /* decode one audio frame and returns its uncompressed size */
1908 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1909 {
1910     AVPacket *pkt_temp = &is->audio_pkt_temp;
1911     AVPacket *pkt = &is->audio_pkt;
1912     AVCodecContext *dec = is->audio_st->codec;
1913     int len1, len2, data_size, resampled_data_size;
1914     int64_t dec_channel_layout;
1915     int got_frame;
1916     double pts;
1917     int new_packet = 0;
1918     int flush_complete = 0;
1919     int wanted_nb_samples;
1920
1921     for (;;) {
1922         /* NOTE: the audio packet can contain several frames */
1923         while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
1924             if (!is->frame) {
1925                 if (!(is->frame = avcodec_alloc_frame()))
1926                     return AVERROR(ENOMEM);
1927             } else
1928                 avcodec_get_frame_defaults(is->frame);
1929
1930             if (is->paused)
1931                 return -1;
1932
1933             if (flush_complete)
1934                 break;
1935             new_packet = 0;
1936             len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
1937             if (len1 < 0) {
1938                 /* if error, we skip the frame */
1939                 pkt_temp->size = 0;
1940                 break;
1941             }
1942
1943             pkt_temp->data += len1;
1944             pkt_temp->size -= len1;
1945
1946             if (!got_frame) {
1947                 /* stop sending empty packets if the decoder is finished */
1948                 if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
1949                     flush_complete = 1;
1950                 continue;
1951             }
1952             data_size = av_samples_get_buffer_size(NULL, dec->channels,
1953                                                    is->frame->nb_samples,
1954                                                    dec->sample_fmt, 1);
1955
1956             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);
1957             wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
1958
1959             if (dec->sample_fmt != is->audio_src.fmt ||
1960                 dec_channel_layout != is->audio_src.channel_layout ||
1961                 dec->sample_rate != is->audio_src.freq ||
1962                 (wanted_nb_samples != is->frame->nb_samples && !is->swr_ctx)) {
1963                 if (is->swr_ctx)
1964                     swr_free(&is->swr_ctx);
1965                 is->swr_ctx = swr_alloc_set_opts(NULL,
1966                                                  is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
1967                                                  dec_channel_layout,           dec->sample_fmt,   dec->sample_rate,
1968                                                  0, NULL);
1969                 if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
1970                     fprintf(stderr, "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
1971                         dec->sample_rate,
1972                         av_get_sample_fmt_name(dec->sample_fmt),
1973                         dec->channels,
1974                         is->audio_tgt.freq,
1975                         av_get_sample_fmt_name(is->audio_tgt.fmt),
1976                         is->audio_tgt.channels);
1977                     break;
1978                 }
1979                 is->audio_src.channel_layout = dec_channel_layout;
1980                 is->audio_src.channels = dec->channels;
1981                 is->audio_src.freq = dec->sample_rate;
1982                 is->audio_src.fmt = dec->sample_fmt;
1983             }
1984
1985             resampled_data_size = data_size;
1986             if (is->swr_ctx) {
1987                 const uint8_t *in[] = { is->frame->data[0] };
1988                 uint8_t *out[] = {is->audio_buf2};
1989                 if (wanted_nb_samples != is->frame->nb_samples) {
1990                     if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / dec->sample_rate,
1991                                                 wanted_nb_samples * is->audio_tgt.freq / dec->sample_rate) < 0) {
1992                         fprintf(stderr, "swr_set_compensation() failed\n");
1993                         break;
1994                     }
1995                 }
1996                 len2 = swr_convert(is->swr_ctx, out, sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt),
1997                                                 in, is->frame->nb_samples);
1998                 if (len2 < 0) {
1999                     fprintf(stderr, "audio_resample() failed\n");
2000                     break;
2001                 }
2002                 if (len2 == sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt)) {
2003                     fprintf(stderr, "warning: audio buffer is probably too small\n");
2004                     swr_init(is->swr_ctx);
2005                 }
2006                 is->audio_buf = is->audio_buf2;
2007                 resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2008             } else {
2009                 is->audio_buf = is->frame->data[0];
2010             }
2011
2012             /* if no pts, then compute it */
2013             pts = is->audio_clock;
2014             *pts_ptr = pts;
2015             is->audio_clock += (double)data_size /
2016                 (dec->channels * dec->sample_rate * av_get_bytes_per_sample(dec->sample_fmt));
2017 #ifdef DEBUG
2018             {
2019                 static double last_clock;
2020                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2021                        is->audio_clock - last_clock,
2022                        is->audio_clock, pts);
2023                 last_clock = is->audio_clock;
2024             }
2025 #endif
2026             return resampled_data_size;
2027         }
2028
2029         /* free the current packet */
2030         if (pkt->data)
2031             av_free_packet(pkt);
2032         memset(pkt_temp, 0, sizeof(*pkt_temp));
2033
2034         if (is->paused || is->audioq.abort_request) {
2035             return -1;
2036         }
2037
2038         /* read next packet */
2039         if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
2040             return -1;
2041
2042         if (pkt->data == flush_pkt.data) {
2043             avcodec_flush_buffers(dec);
2044             flush_complete = 0;
2045         }
2046
2047         *pkt_temp = *pkt;
2048
2049         /* if update the audio clock with the pts */
2050         if (pkt->pts != AV_NOPTS_VALUE) {
2051             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2052         }
2053     }
2054 }
2055
2056 /* prepare a new audio buffer */
2057 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2058 {
2059     VideoState *is = opaque;
2060     int audio_size, len1;
2061     int bytes_per_sec;
2062     int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1);
2063     double pts;
2064
2065     audio_callback_time = av_gettime();
2066
2067     while (len > 0) {
2068         if (is->audio_buf_index >= is->audio_buf_size) {
2069            audio_size = audio_decode_frame(is, &pts);
2070            if (audio_size < 0) {
2071                 /* if error, just output silence */
2072                is->audio_buf      = is->silence_buf;
2073                is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size;
2074            } else {
2075                if (is->show_mode != SHOW_MODE_VIDEO)
2076                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2077                is->audio_buf_size = audio_size;
2078            }
2079            is->audio_buf_index = 0;
2080         }
2081         len1 = is->audio_buf_size - is->audio_buf_index;
2082         if (len1 > len)
2083             len1 = len;
2084         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2085         len -= len1;
2086         stream += len1;
2087         is->audio_buf_index += len1;
2088     }
2089     bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2090     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2091     /* Let's assume the audio driver that is used by SDL has two periods. */
2092     is->audio_current_pts = is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec;
2093     is->audio_current_pts_drift = is->audio_current_pts - audio_callback_time / 1000000.0;
2094 }
2095
2096 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2097 {
2098     SDL_AudioSpec wanted_spec, spec;
2099     const char *env;
2100     const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2101
2102     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2103     if (env) {
2104         wanted_nb_channels = SDL_atoi(env);
2105         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2106     }
2107     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2108         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2109         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2110     }
2111     wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2112     wanted_spec.freq = wanted_sample_rate;
2113     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2114         fprintf(stderr, "Invalid sample rate or channel count!\n");
2115         return -1;
2116     }
2117     wanted_spec.format = AUDIO_S16SYS;
2118     wanted_spec.silence = 0;
2119     wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2120     wanted_spec.callback = sdl_audio_callback;
2121     wanted_spec.userdata = opaque;
2122     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2123         fprintf(stderr, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError());
2124         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2125         if (!wanted_spec.channels) {
2126             fprintf(stderr, "No more channel combinations to try, audio open failed\n");
2127             return -1;
2128         }
2129         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2130     }
2131     if (spec.format != AUDIO_S16SYS) {
2132         fprintf(stderr, "SDL advised audio format %d is not supported!\n", spec.format);
2133         return -1;
2134     }
2135     if (spec.channels != wanted_spec.channels) {
2136         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2137         if (!wanted_channel_layout) {
2138             fprintf(stderr, "SDL advised channel count %d is not supported!\n", spec.channels);
2139             return -1;
2140         }
2141     }
2142
2143     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2144     audio_hw_params->freq = spec.freq;
2145     audio_hw_params->channel_layout = wanted_channel_layout;
2146     audio_hw_params->channels =  spec.channels;
2147     return spec.size;
2148 }
2149
2150 /* open a given stream. Return 0 if OK */
2151 static int stream_component_open(VideoState *is, int stream_index)
2152 {
2153     AVFormatContext *ic = is->ic;
2154     AVCodecContext *avctx;
2155     AVCodec *codec;
2156     AVDictionary *opts;
2157     AVDictionaryEntry *t = NULL;
2158
2159     if (stream_index < 0 || stream_index >= ic->nb_streams)
2160         return -1;
2161     avctx = ic->streams[stream_index]->codec;
2162
2163     codec = avcodec_find_decoder(avctx->codec_id);
2164     opts = filter_codec_opts(codec_opts, codec, ic, ic->streams[stream_index]);
2165
2166     switch(avctx->codec_type){
2167         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; if(audio_codec_name   ) codec= avcodec_find_decoder_by_name(   audio_codec_name); break;
2168         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; if(subtitle_codec_name) codec= avcodec_find_decoder_by_name(subtitle_codec_name); break;
2169         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; if(video_codec_name   ) codec= avcodec_find_decoder_by_name(   video_codec_name); break;
2170     }
2171     if (!codec)
2172         return -1;
2173
2174     avctx->workaround_bugs   = workaround_bugs;
2175     avctx->lowres            = lowres;
2176     if(avctx->lowres > codec->max_lowres){
2177         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2178                 codec->max_lowres);
2179         avctx->lowres= codec->max_lowres;
2180     }
2181     avctx->idct_algo         = idct;
2182     avctx->skip_frame        = skip_frame;
2183     avctx->skip_idct         = skip_idct;
2184     avctx->skip_loop_filter  = skip_loop_filter;
2185     avctx->error_concealment = error_concealment;
2186
2187     if(avctx->lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2188     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2189     if(codec->capabilities & CODEC_CAP_DR1)
2190         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2191
2192     if (!av_dict_get(opts, "threads", NULL, 0))
2193         av_dict_set(&opts, "threads", "auto", 0);
2194     if (!codec ||
2195         avcodec_open2(avctx, codec, &opts) < 0)
2196         return -1;
2197     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2198         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2199         return AVERROR_OPTION_NOT_FOUND;
2200     }
2201
2202     /* prepare audio output */
2203     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2204         int audio_hw_buf_size = audio_open(is, avctx->channel_layout, avctx->channels, avctx->sample_rate, &is->audio_src);
2205         if (audio_hw_buf_size < 0)
2206             return -1;
2207         is->audio_hw_buf_size = audio_hw_buf_size;
2208         is->audio_tgt = is->audio_src;
2209     }
2210
2211     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2212     switch (avctx->codec_type) {
2213     case AVMEDIA_TYPE_AUDIO:
2214         is->audio_stream = stream_index;
2215         is->audio_st = ic->streams[stream_index];
2216         is->audio_buf_size  = 0;
2217         is->audio_buf_index = 0;
2218
2219         /* init averaging filter */
2220         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2221         is->audio_diff_avg_count = 0;
2222         /* since we do not have a precise anough audio fifo fullness,
2223            we correct audio sync only if larger than this threshold */
2224         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);
2225
2226         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2227         memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
2228         packet_queue_start(&is->audioq);
2229         SDL_PauseAudio(0);
2230         break;
2231     case AVMEDIA_TYPE_VIDEO:
2232         is->video_stream = stream_index;
2233         is->video_st = ic->streams[stream_index];
2234
2235         packet_queue_start(&is->videoq);
2236         is->video_tid = SDL_CreateThread(video_thread, is);
2237         break;
2238     case AVMEDIA_TYPE_SUBTITLE:
2239         is->subtitle_stream = stream_index;
2240         is->subtitle_st = ic->streams[stream_index];
2241         packet_queue_start(&is->subtitleq);
2242
2243         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2244         break;
2245     default:
2246         break;
2247     }
2248     return 0;
2249 }
2250
2251 static void stream_component_close(VideoState *is, int stream_index)
2252 {
2253     AVFormatContext *ic = is->ic;
2254     AVCodecContext *avctx;
2255
2256     if (stream_index < 0 || stream_index >= ic->nb_streams)
2257         return;
2258     avctx = ic->streams[stream_index]->codec;
2259
2260     switch (avctx->codec_type) {
2261     case AVMEDIA_TYPE_AUDIO:
2262         packet_queue_abort(&is->audioq);
2263
2264         SDL_CloseAudio();
2265
2266         packet_queue_flush(&is->audioq);
2267         av_free_packet(&is->audio_pkt);
2268         if (is->swr_ctx)
2269             swr_free(&is->swr_ctx);
2270         av_freep(&is->audio_buf1);
2271         is->audio_buf = NULL;
2272         av_freep(&is->frame);
2273
2274         if (is->rdft) {
2275             av_rdft_end(is->rdft);
2276             av_freep(&is->rdft_data);
2277             is->rdft = NULL;
2278             is->rdft_bits = 0;
2279         }
2280         break;
2281     case AVMEDIA_TYPE_VIDEO:
2282         packet_queue_abort(&is->videoq);
2283
2284         /* note: we also signal this mutex to make sure we deblock the
2285            video thread in all cases */
2286         SDL_LockMutex(is->pictq_mutex);
2287         SDL_CondSignal(is->pictq_cond);
2288         SDL_UnlockMutex(is->pictq_mutex);
2289
2290         SDL_WaitThread(is->video_tid, NULL);
2291
2292         packet_queue_flush(&is->videoq);
2293         break;
2294     case AVMEDIA_TYPE_SUBTITLE:
2295         packet_queue_abort(&is->subtitleq);
2296
2297         /* note: we also signal this mutex to make sure we deblock the
2298            video thread in all cases */
2299         SDL_LockMutex(is->subpq_mutex);
2300         is->subtitle_stream_changed = 1;
2301
2302         SDL_CondSignal(is->subpq_cond);
2303         SDL_UnlockMutex(is->subpq_mutex);
2304
2305         SDL_WaitThread(is->subtitle_tid, NULL);
2306
2307         packet_queue_flush(&is->subtitleq);
2308         break;
2309     default:
2310         break;
2311     }
2312
2313     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2314     avcodec_close(avctx);
2315 #if CONFIG_AVFILTER
2316     free_buffer_pool(&is->buffer_pool);
2317 #endif
2318     switch (avctx->codec_type) {
2319     case AVMEDIA_TYPE_AUDIO:
2320         is->audio_st = NULL;
2321         is->audio_stream = -1;
2322         break;
2323     case AVMEDIA_TYPE_VIDEO:
2324         is->video_st = NULL;
2325         is->video_stream = -1;
2326         break;
2327     case AVMEDIA_TYPE_SUBTITLE:
2328         is->subtitle_st = NULL;
2329         is->subtitle_stream = -1;
2330         break;
2331     default:
2332         break;
2333     }
2334 }
2335
2336 static int decode_interrupt_cb(void *ctx)
2337 {
2338     VideoState *is = ctx;
2339     return is->abort_request;
2340 }
2341
2342 /* this thread gets the stream from the disk or the network */
2343 static int read_thread(void *arg)
2344 {
2345     VideoState *is = arg;
2346     AVFormatContext *ic = NULL;
2347     int err, i, ret;
2348     int st_index[AVMEDIA_TYPE_NB];
2349     AVPacket pkt1, *pkt = &pkt1;
2350     int eof = 0;
2351     int pkt_in_play_range = 0;
2352     AVDictionaryEntry *t;
2353     AVDictionary **opts;
2354     int orig_nb_streams;
2355
2356     memset(st_index, -1, sizeof(st_index));
2357     is->last_video_stream = is->video_stream = -1;
2358     is->last_audio_stream = is->audio_stream = -1;
2359     is->last_subtitle_stream = is->subtitle_stream = -1;
2360
2361     ic = avformat_alloc_context();
2362     ic->interrupt_callback.callback = decode_interrupt_cb;
2363     ic->interrupt_callback.opaque = is;
2364     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2365     if (err < 0) {
2366         print_error(is->filename, err);
2367         ret = -1;
2368         goto fail;
2369     }
2370     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2371         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2372         ret = AVERROR_OPTION_NOT_FOUND;
2373         goto fail;
2374     }
2375     is->ic = ic;
2376
2377     if (genpts)
2378         ic->flags |= AVFMT_FLAG_GENPTS;
2379
2380     opts = setup_find_stream_info_opts(ic, codec_opts);
2381     orig_nb_streams = ic->nb_streams;
2382
2383     err = avformat_find_stream_info(ic, opts);
2384     if (err < 0) {
2385         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2386         ret = -1;
2387         goto fail;
2388     }
2389     for (i = 0; i < orig_nb_streams; i++)
2390         av_dict_free(&opts[i]);
2391     av_freep(&opts);
2392
2393     if (ic->pb)
2394         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
2395
2396     if (seek_by_bytes < 0)
2397         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2398
2399     /* if seeking requested, we execute it */
2400     if (start_time != AV_NOPTS_VALUE) {
2401         int64_t timestamp;
2402
2403         timestamp = start_time;
2404         /* add the stream start time */
2405         if (ic->start_time != AV_NOPTS_VALUE)
2406             timestamp += ic->start_time;
2407         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2408         if (ret < 0) {
2409             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2410                     is->filename, (double)timestamp / AV_TIME_BASE);
2411         }
2412     }
2413
2414     for (i = 0; i < ic->nb_streams; i++)
2415         ic->streams[i]->discard = AVDISCARD_ALL;
2416     if (!video_disable)
2417         st_index[AVMEDIA_TYPE_VIDEO] =
2418             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2419                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2420     if (!audio_disable)
2421         st_index[AVMEDIA_TYPE_AUDIO] =
2422             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2423                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2424                                 st_index[AVMEDIA_TYPE_VIDEO],
2425                                 NULL, 0);
2426     if (!video_disable)
2427         st_index[AVMEDIA_TYPE_SUBTITLE] =
2428             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2429                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2430                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2431                                  st_index[AVMEDIA_TYPE_AUDIO] :
2432                                  st_index[AVMEDIA_TYPE_VIDEO]),
2433                                 NULL, 0);
2434     if (show_status) {
2435         av_dump_format(ic, 0, is->filename, 0);
2436     }
2437
2438     is->show_mode = show_mode;
2439
2440     /* open the streams */
2441     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2442         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2443     }
2444
2445     ret = -1;
2446     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2447         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2448     }
2449     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2450     if (is->show_mode == SHOW_MODE_NONE)
2451         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2452
2453     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2454         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2455     }
2456
2457     if (is->video_stream < 0 && is->audio_stream < 0) {
2458         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2459         ret = -1;
2460         goto fail;
2461     }
2462
2463     for (;;) {
2464         if (is->abort_request)
2465             break;
2466         if (is->paused != is->last_paused) {
2467             is->last_paused = is->paused;
2468             if (is->paused)
2469                 is->read_pause_return = av_read_pause(ic);
2470             else
2471                 av_read_play(ic);
2472         }
2473 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2474         if (is->paused &&
2475                 (!strcmp(ic->iformat->name, "rtsp") ||
2476                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2477             /* wait 10 ms to avoid trying to get another packet */
2478             /* XXX: horrible */
2479             SDL_Delay(10);
2480             continue;
2481         }
2482 #endif
2483         if (is->seek_req) {
2484             int64_t seek_target = is->seek_pos;
2485             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2486             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2487 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2488 //      of the seek_pos/seek_rel variables
2489
2490             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2491             if (ret < 0) {
2492                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2493             } else {
2494                 if (is->audio_stream >= 0) {
2495                     packet_queue_flush(&is->audioq);
2496                     packet_queue_put(&is->audioq, &flush_pkt);
2497                 }
2498                 if (is->subtitle_stream >= 0) {
2499                     packet_queue_flush(&is->subtitleq);
2500                     packet_queue_put(&is->subtitleq, &flush_pkt);
2501                 }
2502                 if (is->video_stream >= 0) {
2503                     packet_queue_flush(&is->videoq);
2504                     packet_queue_put(&is->videoq, &flush_pkt);
2505                 }
2506             }
2507             is->seek_req = 0;
2508             eof = 0;
2509         }
2510
2511         /* if the queue are full, no need to read more */
2512         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2513             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
2514                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request)
2515                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request))) {
2516             /* wait 10 ms */
2517             SDL_Delay(10);
2518             continue;
2519         }
2520         if (eof) {
2521             if (is->video_stream >= 0) {
2522                 av_init_packet(pkt);
2523                 pkt->data = NULL;
2524                 pkt->size = 0;
2525                 pkt->stream_index = is->video_stream;
2526                 packet_queue_put(&is->videoq, pkt);
2527             }
2528             if (is->audio_stream >= 0 &&
2529                 is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
2530                 av_init_packet(pkt);
2531                 pkt->data = NULL;
2532                 pkt->size = 0;
2533                 pkt->stream_index = is->audio_stream;
2534                 packet_queue_put(&is->audioq, pkt);
2535             }
2536             SDL_Delay(10);
2537             if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2538                 if (loop != 1 && (!loop || --loop)) {
2539                     stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2540                 } else if (autoexit) {
2541                     ret = AVERROR_EOF;
2542                     goto fail;
2543                 }
2544             }
2545             eof=0;
2546             continue;
2547         }
2548         ret = av_read_frame(ic, pkt);
2549         if (ret < 0) {
2550             if (ret == AVERROR_EOF || url_feof(ic->pb))
2551                 eof = 1;
2552             if (ic->pb && ic->pb->error)
2553                 break;
2554             SDL_Delay(100); /* wait for user event */
2555             continue;
2556         }
2557         /* check if packet is in play range specified by user, then queue, otherwise discard */
2558         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2559                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2560                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2561                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2562                 <= ((double)duration / 1000000);
2563         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2564             packet_queue_put(&is->audioq, pkt);
2565         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2566             packet_queue_put(&is->videoq, pkt);
2567         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2568             packet_queue_put(&is->subtitleq, pkt);
2569         } else {
2570             av_free_packet(pkt);
2571         }
2572     }
2573     /* wait until the end */
2574     while (!is->abort_request) {
2575         SDL_Delay(100);
2576     }
2577
2578     ret = 0;
2579  fail:
2580     /* close each stream */
2581     if (is->audio_stream >= 0)
2582         stream_component_close(is, is->audio_stream);
2583     if (is->video_stream >= 0)
2584         stream_component_close(is, is->video_stream);
2585     if (is->subtitle_stream >= 0)
2586         stream_component_close(is, is->subtitle_stream);
2587     if (is->ic) {
2588         avformat_close_input(&is->ic);
2589     }
2590
2591     if (ret != 0) {
2592         SDL_Event event;
2593
2594         event.type = FF_QUIT_EVENT;
2595         event.user.data1 = is;
2596         SDL_PushEvent(&event);
2597     }
2598     return 0;
2599 }
2600
2601 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2602 {
2603     VideoState *is;
2604
2605     is = av_mallocz(sizeof(VideoState));
2606     if (!is)
2607         return NULL;
2608     av_strlcpy(is->filename, filename, sizeof(is->filename));
2609     is->iformat = iformat;
2610     is->ytop    = 0;
2611     is->xleft   = 0;
2612
2613     /* start video display */
2614     is->pictq_mutex = SDL_CreateMutex();
2615     is->pictq_cond  = SDL_CreateCond();
2616
2617     is->subpq_mutex = SDL_CreateMutex();
2618     is->subpq_cond  = SDL_CreateCond();
2619
2620     packet_queue_init(&is->videoq);
2621     packet_queue_init(&is->audioq);
2622     packet_queue_init(&is->subtitleq);
2623
2624     is->av_sync_type = av_sync_type;
2625     is->read_tid     = SDL_CreateThread(read_thread, is);
2626     if (!is->read_tid) {
2627         av_free(is);
2628         return NULL;
2629     }
2630     return is;
2631 }
2632
2633 static void stream_cycle_channel(VideoState *is, int codec_type)
2634 {
2635     AVFormatContext *ic = is->ic;
2636     int start_index, stream_index;
2637     int old_index;
2638     AVStream *st;
2639
2640     if (codec_type == AVMEDIA_TYPE_VIDEO) {
2641         start_index = is->last_video_stream;
2642         old_index = is->video_stream;
2643     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
2644         start_index = is->last_audio_stream;
2645         old_index = is->audio_stream;
2646     } else {
2647         start_index = is->last_subtitle_stream;
2648         old_index = is->subtitle_stream;
2649     }
2650     stream_index = start_index;
2651     for (;;) {
2652         if (++stream_index >= is->ic->nb_streams)
2653         {
2654             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2655             {
2656                 stream_index = -1;
2657                 is->last_subtitle_stream = -1;
2658                 goto the_end;
2659             }
2660             if (start_index == -1)
2661                 return;
2662             stream_index = 0;
2663         }
2664         if (stream_index == start_index)
2665             return;
2666         st = ic->streams[stream_index];
2667         if (st->codec->codec_type == codec_type) {
2668             /* check that parameters are OK */
2669             switch (codec_type) {
2670             case AVMEDIA_TYPE_AUDIO:
2671                 if (st->codec->sample_rate != 0 &&
2672                     st->codec->channels != 0)
2673                     goto the_end;
2674                 break;
2675             case AVMEDIA_TYPE_VIDEO:
2676             case AVMEDIA_TYPE_SUBTITLE:
2677                 goto the_end;
2678             default:
2679                 break;
2680             }
2681         }
2682     }
2683  the_end:
2684     stream_component_close(is, old_index);
2685     stream_component_open(is, stream_index);
2686 }
2687
2688
2689 static void toggle_full_screen(VideoState *is)
2690 {
2691 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2692     /* OS X needs to reallocate the SDL overlays */
2693     int i;
2694     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
2695         is->pictq[i].reallocate = 1;
2696 #endif
2697     is_full_screen = !is_full_screen;
2698     video_open(is, 1);
2699 }
2700
2701 static void toggle_pause(VideoState *is)
2702 {
2703     stream_toggle_pause(is);
2704     is->step = 0;
2705 }
2706
2707 static void step_to_next_frame(VideoState *is)
2708 {
2709     /* if the stream is paused unpause it, then step */
2710     if (is->paused)
2711         stream_toggle_pause(is);
2712     is->step = 1;
2713 }
2714
2715 static void toggle_audio_display(VideoState *is)
2716 {
2717     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2718     is->show_mode = (is->show_mode + 1) % SHOW_MODE_NB;
2719     fill_rectangle(screen,
2720                 is->xleft, is->ytop, is->width, is->height,
2721                 bgcolor);
2722     SDL_UpdateRect(screen, is->xleft, is->ytop, is->width, is->height);
2723 }
2724
2725 /* handle an event sent by the GUI */
2726 static void event_loop(VideoState *cur_stream)
2727 {
2728     SDL_Event event;
2729     double incr, pos, frac;
2730
2731     for (;;) {
2732         double x;
2733         SDL_WaitEvent(&event);
2734         switch (event.type) {
2735         case SDL_KEYDOWN:
2736             if (exit_on_keydown) {
2737                 do_exit(cur_stream);
2738                 break;
2739             }
2740             switch (event.key.keysym.sym) {
2741             case SDLK_ESCAPE:
2742             case SDLK_q:
2743                 do_exit(cur_stream);
2744                 break;
2745             case SDLK_f:
2746                 toggle_full_screen(cur_stream);
2747                 cur_stream->force_refresh = 1;
2748                 break;
2749             case SDLK_p:
2750             case SDLK_SPACE:
2751                 toggle_pause(cur_stream);
2752                 break;
2753             case SDLK_s: // S: Step to next frame
2754                 step_to_next_frame(cur_stream);
2755                 break;
2756             case SDLK_a:
2757                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2758                 break;
2759             case SDLK_v:
2760                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2761                 break;
2762             case SDLK_t:
2763                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2764                 break;
2765             case SDLK_w:
2766                 toggle_audio_display(cur_stream);
2767                 cur_stream->force_refresh = 1;
2768                 break;
2769             case SDLK_PAGEUP:
2770                 incr = 600.0;
2771                 goto do_seek;
2772             case SDLK_PAGEDOWN:
2773                 incr = -600.0;
2774                 goto do_seek;
2775             case SDLK_LEFT:
2776                 incr = -10.0;
2777                 goto do_seek;
2778             case SDLK_RIGHT:
2779                 incr = 10.0;
2780                 goto do_seek;
2781             case SDLK_UP:
2782                 incr = 60.0;
2783                 goto do_seek;
2784             case SDLK_DOWN:
2785                 incr = -60.0;
2786             do_seek:
2787                     if (seek_by_bytes) {
2788                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2789                             pos = cur_stream->video_current_pos;
2790                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2791                             pos = cur_stream->audio_pkt.pos;
2792                         } else
2793                             pos = avio_tell(cur_stream->ic->pb);
2794                         if (cur_stream->ic->bit_rate)
2795                             incr *= cur_stream->ic->bit_rate / 8.0;
2796                         else
2797                             incr *= 180000.0;
2798                         pos += incr;
2799                         stream_seek(cur_stream, pos, incr, 1);
2800                     } else {
2801                         pos = get_master_clock(cur_stream);
2802                         pos += incr;
2803                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2804                     }
2805                 break;
2806             default:
2807                 break;
2808             }
2809             break;
2810         case SDL_VIDEOEXPOSE:
2811             cur_stream->force_refresh = 1;
2812             break;
2813         case SDL_MOUSEBUTTONDOWN:
2814             if (exit_on_mousedown) {
2815                 do_exit(cur_stream);
2816                 break;
2817             }
2818         case SDL_MOUSEMOTION:
2819             if (event.type == SDL_MOUSEBUTTONDOWN) {
2820                 x = event.button.x;
2821             } else {
2822                 if (event.motion.state != SDL_PRESSED)
2823                     break;
2824                 x = event.motion.x;
2825             }
2826                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2827                     uint64_t size =  avio_size(cur_stream->ic->pb);
2828                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2829                 } else {
2830                     int64_t ts;
2831                     int ns, hh, mm, ss;
2832                     int tns, thh, tmm, tss;
2833                     tns  = cur_stream->ic->duration / 1000000LL;
2834                     thh  = tns / 3600;
2835                     tmm  = (tns % 3600) / 60;
2836                     tss  = (tns % 60);
2837                     frac = x / cur_stream->width;
2838                     ns   = frac * tns;
2839                     hh   = ns / 3600;
2840                     mm   = (ns % 3600) / 60;
2841                     ss   = (ns % 60);
2842                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2843                             hh, mm, ss, thh, tmm, tss);
2844                     ts = frac * cur_stream->ic->duration;
2845                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2846                         ts += cur_stream->ic->start_time;
2847                     stream_seek(cur_stream, ts, 0, 0);
2848                 }
2849             break;
2850         case SDL_VIDEORESIZE:
2851                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2852                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2853                 screen_width  = cur_stream->width  = event.resize.w;
2854                 screen_height = cur_stream->height = event.resize.h;
2855                 cur_stream->force_refresh = 1;
2856             break;
2857         case SDL_QUIT:
2858         case FF_QUIT_EVENT:
2859             do_exit(cur_stream);
2860             break;
2861         case FF_ALLOC_EVENT:
2862             alloc_picture(event.user.data1);
2863             break;
2864         case FF_REFRESH_EVENT:
2865             video_refresh(event.user.data1);
2866             cur_stream->refresh = 0;
2867             break;
2868         default:
2869             break;
2870         }
2871     }
2872 }
2873
2874 static int opt_frame_size(const char *opt, const char *arg)
2875 {
2876     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
2877     return opt_default("video_size", arg);
2878 }
2879
2880 static int opt_width(const char *opt, const char *arg)
2881 {
2882     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2883     return 0;
2884 }
2885
2886 static int opt_height(const char *opt, const char *arg)
2887 {
2888     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2889     return 0;
2890 }
2891
2892 static int opt_format(const char *opt, const char *arg)
2893 {
2894     file_iformat = av_find_input_format(arg);
2895     if (!file_iformat) {
2896         fprintf(stderr, "Unknown input format: %s\n", arg);
2897         return AVERROR(EINVAL);
2898     }
2899     return 0;
2900 }
2901
2902 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2903 {
2904     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
2905     return opt_default("pixel_format", arg);
2906 }
2907
2908 static int opt_sync(const char *opt, const char *arg)
2909 {
2910     if (!strcmp(arg, "audio"))
2911         av_sync_type = AV_SYNC_AUDIO_MASTER;
2912     else if (!strcmp(arg, "video"))
2913         av_sync_type = AV_SYNC_VIDEO_MASTER;
2914     else if (!strcmp(arg, "ext"))
2915         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2916     else {
2917         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2918         exit(1);
2919     }
2920     return 0;
2921 }
2922
2923 static int opt_seek(const char *opt, const char *arg)
2924 {
2925     start_time = parse_time_or_die(opt, arg, 1);
2926     return 0;
2927 }
2928
2929 static int opt_duration(const char *opt, const char *arg)
2930 {
2931     duration = parse_time_or_die(opt, arg, 1);
2932     return 0;
2933 }
2934
2935 static int opt_show_mode(const char *opt, const char *arg)
2936 {
2937     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
2938                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
2939                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
2940                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
2941     return 0;
2942 }
2943
2944 static void opt_input_file(void *optctx, const char *filename)
2945 {
2946     if (input_filename) {
2947         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2948                 filename, input_filename);
2949         exit_program(1);
2950     }
2951     if (!strcmp(filename, "-"))
2952         filename = "pipe:";
2953     input_filename = filename;
2954 }
2955
2956 static int opt_codec(void *o, const char *opt, const char *arg)
2957 {
2958     switch(opt[strlen(opt)-1]){
2959     case 'a' :    audio_codec_name = arg; break;
2960     case 's' : subtitle_codec_name = arg; break;
2961     case 'v' :    video_codec_name = arg; break;
2962     }
2963     return 0;
2964 }
2965
2966 static int dummy;
2967
2968 static const OptionDef options[] = {
2969 #include "cmdutils_common_opts.h"
2970     { "x", HAS_ARG, { (void*)opt_width }, "force displayed width", "width" },
2971     { "y", HAS_ARG, { (void*)opt_height }, "force displayed height", "height" },
2972     { "s", HAS_ARG | OPT_VIDEO, { (void*)opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2973     { "fs", OPT_BOOL, { (void*)&is_full_screen }, "force full screen" },
2974     { "an", OPT_BOOL, { (void*)&audio_disable }, "disable audio" },
2975     { "vn", OPT_BOOL, { (void*)&video_disable }, "disable video" },
2976     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2977     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2978     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2979     { "ss", HAS_ARG, { (void*)&opt_seek }, "seek to a given position in seconds", "pos" },
2980     { "t", HAS_ARG, { (void*)&opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
2981     { "bytes", OPT_INT | HAS_ARG, { (void*)&seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2982     { "nodisp", OPT_BOOL, { (void*)&display_disable }, "disable graphical display" },
2983     { "f", HAS_ARG, { (void*)opt_format }, "force format", "fmt" },
2984     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { (void*)opt_frame_pix_fmt }, "set pixel format", "format" },
2985     { "stats", OPT_BOOL | OPT_EXPERT, { (void*)&show_status }, "show status", "" },
2986     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&workaround_bugs }, "workaround bugs", "" },
2987     { "fast", OPT_BOOL | OPT_EXPERT, { (void*)&fast }, "non spec compliant optimizations", "" },
2988     { "genpts", OPT_BOOL | OPT_EXPERT, { (void*)&genpts }, "generate pts", "" },
2989     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2990     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&lowres }, "", "" },
2991     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_loop_filter }, "", "" },
2992     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_frame }, "", "" },
2993     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_idct }, "", "" },
2994     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&idct }, "set idct algo",  "algo" },
2995     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&error_concealment }, "set error concealment options",  "bit_mask" },
2996     { "sync", HAS_ARG | OPT_EXPERT, { (void*)opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
2997     { "autoexit", OPT_BOOL | OPT_EXPERT, { (void*)&autoexit }, "exit at the end", "" },
2998     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_keydown }, "exit on key down", "" },
2999     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_mousedown }, "exit on mouse down", "" },
3000     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&loop }, "set number of times the playback shall be looped", "loop count" },
3001     { "framedrop", OPT_BOOL | OPT_EXPERT, { (void*)&framedrop }, "drop frames when cpu is too slow", "" },
3002     { "window_title", OPT_STRING | HAS_ARG, { (void*)&window_title }, "set window title", "window title" },
3003 #if CONFIG_AVFILTER
3004     { "vf", OPT_STRING | HAS_ARG, { (void*)&vfilters }, "video filters", "filter list" },
3005 #endif
3006     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { (void*)&rdftspeed }, "rdft speed", "msecs" },
3007     { "showmode", HAS_ARG, {(void*)opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3008     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { (void*)opt_default }, "generic catch all option", "" },
3009     { "i", OPT_BOOL, {(void *)&dummy}, "read specified file", "input_file"},
3010     { "codec", HAS_ARG | OPT_FUNC2, {(void*)opt_codec}, "force decoder", "decoder" },
3011     { NULL, },
3012 };
3013
3014 static void show_usage(void)
3015 {
3016     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3017     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3018     av_log(NULL, AV_LOG_INFO, "\n");
3019 }
3020
3021 static int opt_help(const char *opt, const char *arg)
3022 {
3023     av_log_set_callback(log_callback_help);
3024     show_usage();
3025     show_help_options(options, "Main options:\n",
3026                       OPT_EXPERT, 0);
3027     show_help_options(options, "\nAdvanced options:\n",
3028                       OPT_EXPERT, OPT_EXPERT);
3029     printf("\n");
3030     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3031     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3032 #if !CONFIG_AVFILTER
3033     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3034 #endif
3035     printf("\nWhile playing:\n"
3036            "q, ESC              quit\n"
3037            "f                   toggle full screen\n"
3038            "p, SPC              pause\n"
3039            "a                   cycle audio channel\n"
3040            "v                   cycle video channel\n"
3041            "t                   cycle subtitle channel\n"
3042            "w                   show audio waves\n"
3043            "s                   activate frame-step mode\n"
3044            "left/right          seek backward/forward 10 seconds\n"
3045            "down/up             seek backward/forward 1 minute\n"
3046            "page down/page up   seek backward/forward 10 minutes\n"
3047            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3048            );
3049     return 0;
3050 }
3051
3052 static int lockmgr(void **mtx, enum AVLockOp op)
3053 {
3054    switch(op) {
3055       case AV_LOCK_CREATE:
3056           *mtx = SDL_CreateMutex();
3057           if(!*mtx)
3058               return 1;
3059           return 0;
3060       case AV_LOCK_OBTAIN:
3061           return !!SDL_LockMutex(*mtx);
3062       case AV_LOCK_RELEASE:
3063           return !!SDL_UnlockMutex(*mtx);
3064       case AV_LOCK_DESTROY:
3065           SDL_DestroyMutex(*mtx);
3066           return 0;
3067    }
3068    return 1;
3069 }
3070
3071 /* Called from the main */
3072 int main(int argc, char **argv)
3073 {
3074     int flags;
3075     VideoState *is;
3076     char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy";
3077
3078     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3079     parse_loglevel(argc, argv, options);
3080
3081     /* register all codecs, demux and protocols */
3082     avcodec_register_all();
3083 #if CONFIG_AVDEVICE
3084     avdevice_register_all();
3085 #endif
3086 #if CONFIG_AVFILTER
3087     avfilter_register_all();
3088 #endif
3089     av_register_all();
3090     avformat_network_init();
3091
3092     init_opts();
3093
3094     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
3095     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
3096
3097     show_banner(argc, argv, options);
3098
3099     parse_options(NULL, argc, argv, options, opt_input_file);
3100
3101     if (!input_filename) {
3102         show_usage();
3103         fprintf(stderr, "An input file must be specified\n");
3104         fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3105         exit(1);
3106     }
3107
3108     if (display_disable) {
3109         video_disable = 1;
3110     }
3111     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3112     if (audio_disable)
3113         flags &= ~SDL_INIT_AUDIO;
3114     if (display_disable)
3115         SDL_putenv(dummy_videodriver); /* For the event queue, we always need a video driver. */
3116 #if !defined(__MINGW32__) && !defined(__APPLE__)
3117     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3118 #endif
3119     if (SDL_Init (flags)) {
3120         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3121         fprintf(stderr, "(Did you set the DISPLAY variable?)\n");
3122         exit(1);
3123     }
3124
3125     if (!display_disable) {
3126 #if HAVE_SDL_VIDEO_SIZE
3127         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3128         fs_screen_width = vi->current_w;
3129         fs_screen_height = vi->current_h;
3130 #endif
3131     }
3132
3133     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3134     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3135     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3136
3137     if (av_lockmgr_register(lockmgr)) {
3138         fprintf(stderr, "Could not initialize lock manager!\n");
3139         do_exit(NULL);
3140     }
3141
3142     av_init_packet(&flush_pkt);
3143     flush_pkt.data = (char *)(intptr_t)"FLUSH";
3144
3145     is = stream_open(input_filename, file_iformat);
3146     if (!is) {
3147         fprintf(stderr, "Failed to initialize VideoState!\n");
3148         do_exit(NULL);
3149     }
3150
3151     event_loop(is);
3152
3153     /* never returns */
3154
3155     return 0;
3156 }