Merge remote-tracking branch 'qatar/master'
[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), "%d:%d:%d:%d:%d:%d:%d",
1564              codec->width, codec->height, codec->pix_fmt,
1565              is->video_st->time_base.num, is->video_st->time_base.den,
1566              codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
1567
1568
1569     if ((ret = avfilter_graph_create_filter(&filt_src,
1570                                             avfilter_get_by_name("buffer"),
1571                                             "src", buffersrc_args, NULL,
1572                                             graph)) < 0)
1573         return ret;
1574
1575 #if FF_API_OLD_VSINK_API
1576     ret = avfilter_graph_create_filter(&filt_out,
1577                                        avfilter_get_by_name("buffersink"),
1578                                        "out", NULL, pix_fmts, graph);
1579 #else
1580     buffersink_params->pixel_fmts = pix_fmts;
1581     ret = avfilter_graph_create_filter(&filt_out,
1582                                        avfilter_get_by_name("buffersink"),
1583                                        "out", NULL, buffersink_params, graph);
1584 #endif
1585     av_freep(&buffersink_params);
1586     if (ret < 0)
1587         return ret;
1588
1589     if ((ret = avfilter_graph_create_filter(&filt_format,
1590                                             avfilter_get_by_name("format"),
1591                                             "format", "yuv420p", NULL, graph)) < 0)
1592         return ret;
1593     if ((ret = avfilter_link(filt_format, 0, filt_out, 0)) < 0)
1594         return ret;
1595
1596
1597     if (vfilters) {
1598         AVFilterInOut *outputs = avfilter_inout_alloc();
1599         AVFilterInOut *inputs  = avfilter_inout_alloc();
1600
1601         outputs->name    = av_strdup("in");
1602         outputs->filter_ctx = filt_src;
1603         outputs->pad_idx = 0;
1604         outputs->next    = NULL;
1605
1606         inputs->name    = av_strdup("out");
1607         inputs->filter_ctx = filt_format;
1608         inputs->pad_idx = 0;
1609         inputs->next    = NULL;
1610
1611         if ((ret = avfilter_graph_parse(graph, vfilters, &inputs, &outputs, NULL)) < 0)
1612             return ret;
1613     } else {
1614         if ((ret = avfilter_link(filt_src, 0, filt_format, 0)) < 0)
1615             return ret;
1616     }
1617
1618     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1619         return ret;
1620
1621     is->in_video_filter  = filt_src;
1622     is->out_video_filter = filt_out;
1623
1624     if (codec->codec->capabilities & CODEC_CAP_DR1) {
1625         is->use_dr1 = 1;
1626         codec->get_buffer     = codec_get_buffer;
1627         codec->release_buffer = codec_release_buffer;
1628         codec->opaque         = &is->buffer_pool;
1629     }
1630
1631     return ret;
1632 }
1633
1634 #endif  /* CONFIG_AVFILTER */
1635
1636 static int video_thread(void *arg)
1637 {
1638     VideoState *is = arg;
1639     AVFrame *frame = avcodec_alloc_frame();
1640     int64_t pts_int = AV_NOPTS_VALUE, pos = -1;
1641     double pts;
1642     int ret;
1643
1644 #if CONFIG_AVFILTER
1645     AVFilterGraph *graph = avfilter_graph_alloc();
1646     AVFilterContext *filt_out = NULL, *filt_in = NULL;
1647     int last_w = is->video_st->codec->width;
1648     int last_h = is->video_st->codec->height;
1649     enum PixelFormat last_format = is->video_st->codec->pix_fmt;
1650
1651     if ((ret = configure_video_filters(graph, is, vfilters)) < 0) {
1652         SDL_Event event;
1653         event.type = FF_QUIT_EVENT;
1654         event.user.data1 = is;
1655         SDL_PushEvent(&event);
1656         goto the_end;
1657     }
1658     filt_in  = is->in_video_filter;
1659     filt_out = is->out_video_filter;
1660 #endif
1661
1662     for (;;) {
1663         AVPacket pkt;
1664 #if CONFIG_AVFILTER
1665         AVFilterBufferRef *picref;
1666         AVRational tb = filt_out->inputs[0]->time_base;
1667 #endif
1668         while (is->paused && !is->videoq.abort_request)
1669             SDL_Delay(10);
1670
1671         avcodec_get_frame_defaults(frame);
1672         ret = get_video_frame(is, frame, &pts_int, &pkt);
1673         if (ret < 0)
1674             goto the_end;
1675
1676         if (!ret) {
1677             av_free_packet(&pkt);
1678             continue;
1679         }
1680
1681 #if CONFIG_AVFILTER
1682         if (   last_w != is->video_st->codec->width
1683             || last_h != is->video_st->codec->height
1684             || last_format != is->video_st->codec->pix_fmt) {
1685             av_log(NULL, AV_LOG_INFO, "Frame changed from size:%dx%d to size:%dx%d\n",
1686                    last_w, last_h, is->video_st->codec->width, is->video_st->codec->height);
1687             avfilter_graph_free(&graph);
1688             graph = avfilter_graph_alloc();
1689             if ((ret = configure_video_filters(graph, is, vfilters)) < 0) {
1690                 av_free_packet(&pkt);
1691                 goto the_end;
1692             }
1693             filt_in  = is->in_video_filter;
1694             filt_out = is->out_video_filter;
1695             last_w = is->video_st->codec->width;
1696             last_h = is->video_st->codec->height;
1697             last_format = is->video_st->codec->pix_fmt;
1698         }
1699
1700         frame->pts = pts_int;
1701         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1702         if (is->use_dr1) {
1703             FrameBuffer      *buf = frame->opaque;
1704             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1705                                         frame->data, frame->linesize,
1706                                         AV_PERM_READ | AV_PERM_PRESERVE,
1707                                         frame->width, frame->height,
1708                                         frame->format);
1709
1710             avfilter_copy_frame_props(fb, frame);
1711             fb->buf->priv           = buf;
1712             fb->buf->free           = filter_release_buffer;
1713
1714             buf->refcount++;
1715             av_buffersrc_buffer(filt_in, fb);
1716
1717         } else
1718             av_buffersrc_write_frame(filt_in, frame);
1719
1720         av_free_packet(&pkt);
1721
1722         while (ret >= 0) {
1723             is->frame_last_returned_time = av_gettime() / 1000000.0;
1724
1725             ret = av_buffersink_get_buffer_ref(filt_out, &picref, 0);
1726             if (ret < 0) {
1727                 ret = 0;
1728                 break;
1729             }
1730
1731             is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time;
1732             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
1733                 is->frame_last_filter_delay = 0;
1734
1735             avfilter_fill_frame_from_video_buffer_ref(frame, picref);
1736
1737             pts_int = picref->pts;
1738             tb      = filt_out->inputs[0]->time_base;
1739             pos     = picref->pos;
1740             frame->opaque = picref;
1741
1742             if (av_cmp_q(tb, is->video_st->time_base)) {
1743                 av_unused int64_t pts1 = pts_int;
1744                 pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1745                 av_dlog(NULL, "video_thread(): "
1746                         "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1747                         tb.num, tb.den, pts1,
1748                         is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1749             }
1750             pts = pts_int * av_q2d(is->video_st->time_base);
1751             ret = queue_picture(is, frame, pts, pos);
1752         }
1753 #else
1754         pts = pts_int * av_q2d(is->video_st->time_base);
1755         ret = queue_picture(is, frame, pts, pkt.pos);
1756 #endif
1757
1758         if (ret < 0)
1759             goto the_end;
1760
1761         if (is->step)
1762             stream_toggle_pause(is);
1763     }
1764  the_end:
1765     avcodec_flush_buffers(is->video_st->codec);
1766 #if CONFIG_AVFILTER
1767     av_freep(&vfilters);
1768     avfilter_graph_free(&graph);
1769 #endif
1770     av_free(frame);
1771     return 0;
1772 }
1773
1774 static int subtitle_thread(void *arg)
1775 {
1776     VideoState *is = arg;
1777     SubPicture *sp;
1778     AVPacket pkt1, *pkt = &pkt1;
1779     int got_subtitle;
1780     double pts;
1781     int i, j;
1782     int r, g, b, y, u, v, a;
1783
1784     for (;;) {
1785         while (is->paused && !is->subtitleq.abort_request) {
1786             SDL_Delay(10);
1787         }
1788         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1789             break;
1790
1791         if (pkt->data == flush_pkt.data) {
1792             avcodec_flush_buffers(is->subtitle_st->codec);
1793             continue;
1794         }
1795         SDL_LockMutex(is->subpq_mutex);
1796         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1797                !is->subtitleq.abort_request) {
1798             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1799         }
1800         SDL_UnlockMutex(is->subpq_mutex);
1801
1802         if (is->subtitleq.abort_request)
1803             return 0;
1804
1805         sp = &is->subpq[is->subpq_windex];
1806
1807        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1808            this packet, if any */
1809         pts = 0;
1810         if (pkt->pts != AV_NOPTS_VALUE)
1811             pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
1812
1813         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1814                                  &got_subtitle, pkt);
1815
1816         if (got_subtitle && sp->sub.format == 0) {
1817             sp->pts = pts;
1818
1819             for (i = 0; i < sp->sub.num_rects; i++)
1820             {
1821                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1822                 {
1823                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1824                     y = RGB_TO_Y_CCIR(r, g, b);
1825                     u = RGB_TO_U_CCIR(r, g, b, 0);
1826                     v = RGB_TO_V_CCIR(r, g, b, 0);
1827                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1828                 }
1829             }
1830
1831             /* now we can update the picture count */
1832             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1833                 is->subpq_windex = 0;
1834             SDL_LockMutex(is->subpq_mutex);
1835             is->subpq_size++;
1836             SDL_UnlockMutex(is->subpq_mutex);
1837         }
1838         av_free_packet(pkt);
1839     }
1840     return 0;
1841 }
1842
1843 /* copy samples for viewing in editor window */
1844 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1845 {
1846     int size, len;
1847
1848     size = samples_size / sizeof(short);
1849     while (size > 0) {
1850         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1851         if (len > size)
1852             len = size;
1853         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1854         samples += len;
1855         is->sample_array_index += len;
1856         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1857             is->sample_array_index = 0;
1858         size -= len;
1859     }
1860 }
1861
1862 /* return the wanted number of samples to get better sync if sync_type is video
1863  * or external master clock */
1864 static int synchronize_audio(VideoState *is, int nb_samples)
1865 {
1866     int wanted_nb_samples = nb_samples;
1867
1868     /* if not master, then we try to remove or add samples to correct the clock */
1869     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1870          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1871         double diff, avg_diff;
1872         int min_nb_samples, max_nb_samples;
1873
1874         diff = get_audio_clock(is) - get_master_clock(is);
1875
1876         if (diff < AV_NOSYNC_THRESHOLD) {
1877             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1878             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1879                 /* not enough measures to have a correct estimate */
1880                 is->audio_diff_avg_count++;
1881             } else {
1882                 /* estimate the A-V difference */
1883                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1884
1885                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1886                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
1887                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
1888                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
1889                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
1890                 }
1891                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1892                         diff, avg_diff, wanted_nb_samples - nb_samples,
1893                         is->audio_clock, is->video_clock, is->audio_diff_threshold);
1894             }
1895         } else {
1896             /* too big difference : may be initial PTS errors, so
1897                reset A-V filter */
1898             is->audio_diff_avg_count = 0;
1899             is->audio_diff_cum       = 0;
1900         }
1901     }
1902
1903     return wanted_nb_samples;
1904 }
1905
1906 /* decode one audio frame and returns its uncompressed size */
1907 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1908 {
1909     AVPacket *pkt_temp = &is->audio_pkt_temp;
1910     AVPacket *pkt = &is->audio_pkt;
1911     AVCodecContext *dec = is->audio_st->codec;
1912     int len1, len2, data_size, resampled_data_size;
1913     int64_t dec_channel_layout;
1914     int got_frame;
1915     double pts;
1916     int new_packet = 0;
1917     int flush_complete = 0;
1918     int wanted_nb_samples;
1919
1920     for (;;) {
1921         /* NOTE: the audio packet can contain several frames */
1922         while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
1923             if (!is->frame) {
1924                 if (!(is->frame = avcodec_alloc_frame()))
1925                     return AVERROR(ENOMEM);
1926             } else
1927                 avcodec_get_frame_defaults(is->frame);
1928
1929             if (is->paused)
1930                 return -1;
1931
1932             if (flush_complete)
1933                 break;
1934             new_packet = 0;
1935             len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
1936             if (len1 < 0) {
1937                 /* if error, we skip the frame */
1938                 pkt_temp->size = 0;
1939                 break;
1940             }
1941
1942             pkt_temp->data += len1;
1943             pkt_temp->size -= len1;
1944
1945             if (!got_frame) {
1946                 /* stop sending empty packets if the decoder is finished */
1947                 if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
1948                     flush_complete = 1;
1949                 continue;
1950             }
1951             data_size = av_samples_get_buffer_size(NULL, dec->channels,
1952                                                    is->frame->nb_samples,
1953                                                    dec->sample_fmt, 1);
1954
1955             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);
1956             wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
1957
1958             if (dec->sample_fmt != is->audio_src.fmt ||
1959                 dec_channel_layout != is->audio_src.channel_layout ||
1960                 dec->sample_rate != is->audio_src.freq ||
1961                 (wanted_nb_samples != is->frame->nb_samples && !is->swr_ctx)) {
1962                 if (is->swr_ctx)
1963                     swr_free(&is->swr_ctx);
1964                 is->swr_ctx = swr_alloc_set_opts(NULL,
1965                                                  is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
1966                                                  dec_channel_layout,           dec->sample_fmt,   dec->sample_rate,
1967                                                  0, NULL);
1968                 if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
1969                     fprintf(stderr, "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
1970                         dec->sample_rate,
1971                         av_get_sample_fmt_name(dec->sample_fmt),
1972                         dec->channels,
1973                         is->audio_tgt.freq,
1974                         av_get_sample_fmt_name(is->audio_tgt.fmt),
1975                         is->audio_tgt.channels);
1976                     break;
1977                 }
1978                 is->audio_src.channel_layout = dec_channel_layout;
1979                 is->audio_src.channels = dec->channels;
1980                 is->audio_src.freq = dec->sample_rate;
1981                 is->audio_src.fmt = dec->sample_fmt;
1982             }
1983
1984             resampled_data_size = data_size;
1985             if (is->swr_ctx) {
1986                 const uint8_t *in[] = { is->frame->data[0] };
1987                 uint8_t *out[] = {is->audio_buf2};
1988                 if (wanted_nb_samples != is->frame->nb_samples) {
1989                     if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / dec->sample_rate,
1990                                                 wanted_nb_samples * is->audio_tgt.freq / dec->sample_rate) < 0) {
1991                         fprintf(stderr, "swr_set_compensation() failed\n");
1992                         break;
1993                     }
1994                 }
1995                 len2 = swr_convert(is->swr_ctx, out, sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt),
1996                                                 in, is->frame->nb_samples);
1997                 if (len2 < 0) {
1998                     fprintf(stderr, "audio_resample() failed\n");
1999                     break;
2000                 }
2001                 if (len2 == sizeof(is->audio_buf2) / is->audio_tgt.channels / av_get_bytes_per_sample(is->audio_tgt.fmt)) {
2002                     fprintf(stderr, "warning: audio buffer is probably too small\n");
2003                     swr_init(is->swr_ctx);
2004                 }
2005                 is->audio_buf = is->audio_buf2;
2006                 resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2007             } else {
2008                 is->audio_buf = is->frame->data[0];
2009             }
2010
2011             /* if no pts, then compute it */
2012             pts = is->audio_clock;
2013             *pts_ptr = pts;
2014             is->audio_clock += (double)data_size /
2015                 (dec->channels * dec->sample_rate * av_get_bytes_per_sample(dec->sample_fmt));
2016 #ifdef DEBUG
2017             {
2018                 static double last_clock;
2019                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2020                        is->audio_clock - last_clock,
2021                        is->audio_clock, pts);
2022                 last_clock = is->audio_clock;
2023             }
2024 #endif
2025             return resampled_data_size;
2026         }
2027
2028         /* free the current packet */
2029         if (pkt->data)
2030             av_free_packet(pkt);
2031         memset(pkt_temp, 0, sizeof(*pkt_temp));
2032
2033         if (is->paused || is->audioq.abort_request) {
2034             return -1;
2035         }
2036
2037         /* read next packet */
2038         if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
2039             return -1;
2040
2041         if (pkt->data == flush_pkt.data) {
2042             avcodec_flush_buffers(dec);
2043             flush_complete = 0;
2044         }
2045
2046         *pkt_temp = *pkt;
2047
2048         /* if update the audio clock with the pts */
2049         if (pkt->pts != AV_NOPTS_VALUE) {
2050             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2051         }
2052     }
2053 }
2054
2055 /* prepare a new audio buffer */
2056 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2057 {
2058     VideoState *is = opaque;
2059     int audio_size, len1;
2060     int bytes_per_sec;
2061     int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1);
2062     double pts;
2063
2064     audio_callback_time = av_gettime();
2065
2066     while (len > 0) {
2067         if (is->audio_buf_index >= is->audio_buf_size) {
2068            audio_size = audio_decode_frame(is, &pts);
2069            if (audio_size < 0) {
2070                 /* if error, just output silence */
2071                is->audio_buf      = is->silence_buf;
2072                is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size;
2073            } else {
2074                if (is->show_mode != SHOW_MODE_VIDEO)
2075                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2076                is->audio_buf_size = audio_size;
2077            }
2078            is->audio_buf_index = 0;
2079         }
2080         len1 = is->audio_buf_size - is->audio_buf_index;
2081         if (len1 > len)
2082             len1 = len;
2083         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2084         len -= len1;
2085         stream += len1;
2086         is->audio_buf_index += len1;
2087     }
2088     bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2089     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2090     /* Let's assume the audio driver that is used by SDL has two periods. */
2091     is->audio_current_pts = is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec;
2092     is->audio_current_pts_drift = is->audio_current_pts - audio_callback_time / 1000000.0;
2093 }
2094
2095 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2096 {
2097     SDL_AudioSpec wanted_spec, spec;
2098     const char *env;
2099     const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2100
2101     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2102     if (env) {
2103         wanted_nb_channels = SDL_atoi(env);
2104         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2105     }
2106     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2107         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2108         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2109     }
2110     wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2111     wanted_spec.freq = wanted_sample_rate;
2112     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2113         fprintf(stderr, "Invalid sample rate or channel count!\n");
2114         return -1;
2115     }
2116     wanted_spec.format = AUDIO_S16SYS;
2117     wanted_spec.silence = 0;
2118     wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2119     wanted_spec.callback = sdl_audio_callback;
2120     wanted_spec.userdata = opaque;
2121     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2122         fprintf(stderr, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError());
2123         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2124         if (!wanted_spec.channels) {
2125             fprintf(stderr, "No more channel combinations to try, audio open failed\n");
2126             return -1;
2127         }
2128         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2129     }
2130     if (spec.format != AUDIO_S16SYS) {
2131         fprintf(stderr, "SDL advised audio format %d is not supported!\n", spec.format);
2132         return -1;
2133     }
2134     if (spec.channels != wanted_spec.channels) {
2135         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2136         if (!wanted_channel_layout) {
2137             fprintf(stderr, "SDL advised channel count %d is not supported!\n", spec.channels);
2138             return -1;
2139         }
2140     }
2141
2142     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2143     audio_hw_params->freq = spec.freq;
2144     audio_hw_params->channel_layout = wanted_channel_layout;
2145     audio_hw_params->channels =  spec.channels;
2146     return spec.size;
2147 }
2148
2149 /* open a given stream. Return 0 if OK */
2150 static int stream_component_open(VideoState *is, int stream_index)
2151 {
2152     AVFormatContext *ic = is->ic;
2153     AVCodecContext *avctx;
2154     AVCodec *codec;
2155     AVDictionary *opts;
2156     AVDictionaryEntry *t = NULL;
2157
2158     if (stream_index < 0 || stream_index >= ic->nb_streams)
2159         return -1;
2160     avctx = ic->streams[stream_index]->codec;
2161
2162     codec = avcodec_find_decoder(avctx->codec_id);
2163     opts = filter_codec_opts(codec_opts, codec, ic, ic->streams[stream_index]);
2164
2165     switch(avctx->codec_type){
2166         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; if(audio_codec_name   ) codec= avcodec_find_decoder_by_name(   audio_codec_name); break;
2167         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; if(subtitle_codec_name) codec= avcodec_find_decoder_by_name(subtitle_codec_name); break;
2168         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; if(video_codec_name   ) codec= avcodec_find_decoder_by_name(   video_codec_name); break;
2169     }
2170     if (!codec)
2171         return -1;
2172
2173     avctx->workaround_bugs   = workaround_bugs;
2174     avctx->lowres            = lowres;
2175     if(avctx->lowres > codec->max_lowres){
2176         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2177                 codec->max_lowres);
2178         avctx->lowres= codec->max_lowres;
2179     }
2180     avctx->idct_algo         = idct;
2181     avctx->skip_frame        = skip_frame;
2182     avctx->skip_idct         = skip_idct;
2183     avctx->skip_loop_filter  = skip_loop_filter;
2184     avctx->error_concealment = error_concealment;
2185
2186     if(avctx->lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2187     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2188     if(codec->capabilities & CODEC_CAP_DR1)
2189         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2190
2191     if (!av_dict_get(opts, "threads", NULL, 0))
2192         av_dict_set(&opts, "threads", "auto", 0);
2193     if (!codec ||
2194         avcodec_open2(avctx, codec, &opts) < 0)
2195         return -1;
2196     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2197         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2198         return AVERROR_OPTION_NOT_FOUND;
2199     }
2200
2201     /* prepare audio output */
2202     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2203         int audio_hw_buf_size = audio_open(is, avctx->channel_layout, avctx->channels, avctx->sample_rate, &is->audio_src);
2204         if (audio_hw_buf_size < 0)
2205             return -1;
2206         is->audio_hw_buf_size = audio_hw_buf_size;
2207         is->audio_tgt = is->audio_src;
2208     }
2209
2210     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2211     switch (avctx->codec_type) {
2212     case AVMEDIA_TYPE_AUDIO:
2213         is->audio_stream = stream_index;
2214         is->audio_st = ic->streams[stream_index];
2215         is->audio_buf_size  = 0;
2216         is->audio_buf_index = 0;
2217
2218         /* init averaging filter */
2219         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2220         is->audio_diff_avg_count = 0;
2221         /* since we do not have a precise anough audio fifo fullness,
2222            we correct audio sync only if larger than this threshold */
2223         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);
2224
2225         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2226         memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
2227         packet_queue_start(&is->audioq);
2228         SDL_PauseAudio(0);
2229         break;
2230     case AVMEDIA_TYPE_VIDEO:
2231         is->video_stream = stream_index;
2232         is->video_st = ic->streams[stream_index];
2233
2234         packet_queue_start(&is->videoq);
2235         is->video_tid = SDL_CreateThread(video_thread, is);
2236         break;
2237     case AVMEDIA_TYPE_SUBTITLE:
2238         is->subtitle_stream = stream_index;
2239         is->subtitle_st = ic->streams[stream_index];
2240         packet_queue_start(&is->subtitleq);
2241
2242         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2243         break;
2244     default:
2245         break;
2246     }
2247     return 0;
2248 }
2249
2250 static void stream_component_close(VideoState *is, int stream_index)
2251 {
2252     AVFormatContext *ic = is->ic;
2253     AVCodecContext *avctx;
2254
2255     if (stream_index < 0 || stream_index >= ic->nb_streams)
2256         return;
2257     avctx = ic->streams[stream_index]->codec;
2258
2259     switch (avctx->codec_type) {
2260     case AVMEDIA_TYPE_AUDIO:
2261         packet_queue_abort(&is->audioq);
2262
2263         SDL_CloseAudio();
2264
2265         packet_queue_flush(&is->audioq);
2266         av_free_packet(&is->audio_pkt);
2267         if (is->swr_ctx)
2268             swr_free(&is->swr_ctx);
2269         av_freep(&is->audio_buf1);
2270         is->audio_buf = NULL;
2271         av_freep(&is->frame);
2272
2273         if (is->rdft) {
2274             av_rdft_end(is->rdft);
2275             av_freep(&is->rdft_data);
2276             is->rdft = NULL;
2277             is->rdft_bits = 0;
2278         }
2279         break;
2280     case AVMEDIA_TYPE_VIDEO:
2281         packet_queue_abort(&is->videoq);
2282
2283         /* note: we also signal this mutex to make sure we deblock the
2284            video thread in all cases */
2285         SDL_LockMutex(is->pictq_mutex);
2286         SDL_CondSignal(is->pictq_cond);
2287         SDL_UnlockMutex(is->pictq_mutex);
2288
2289         SDL_WaitThread(is->video_tid, NULL);
2290
2291         packet_queue_flush(&is->videoq);
2292         break;
2293     case AVMEDIA_TYPE_SUBTITLE:
2294         packet_queue_abort(&is->subtitleq);
2295
2296         /* note: we also signal this mutex to make sure we deblock the
2297            video thread in all cases */
2298         SDL_LockMutex(is->subpq_mutex);
2299         is->subtitle_stream_changed = 1;
2300
2301         SDL_CondSignal(is->subpq_cond);
2302         SDL_UnlockMutex(is->subpq_mutex);
2303
2304         SDL_WaitThread(is->subtitle_tid, NULL);
2305
2306         packet_queue_flush(&is->subtitleq);
2307         break;
2308     default:
2309         break;
2310     }
2311
2312     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2313     avcodec_close(avctx);
2314 #if CONFIG_AVFILTER
2315     free_buffer_pool(&is->buffer_pool);
2316 #endif
2317     switch (avctx->codec_type) {
2318     case AVMEDIA_TYPE_AUDIO:
2319         is->audio_st = NULL;
2320         is->audio_stream = -1;
2321         break;
2322     case AVMEDIA_TYPE_VIDEO:
2323         is->video_st = NULL;
2324         is->video_stream = -1;
2325         break;
2326     case AVMEDIA_TYPE_SUBTITLE:
2327         is->subtitle_st = NULL;
2328         is->subtitle_stream = -1;
2329         break;
2330     default:
2331         break;
2332     }
2333 }
2334
2335 static int decode_interrupt_cb(void *ctx)
2336 {
2337     VideoState *is = ctx;
2338     return is->abort_request;
2339 }
2340
2341 /* this thread gets the stream from the disk or the network */
2342 static int read_thread(void *arg)
2343 {
2344     VideoState *is = arg;
2345     AVFormatContext *ic = NULL;
2346     int err, i, ret;
2347     int st_index[AVMEDIA_TYPE_NB];
2348     AVPacket pkt1, *pkt = &pkt1;
2349     int eof = 0;
2350     int pkt_in_play_range = 0;
2351     AVDictionaryEntry *t;
2352     AVDictionary **opts;
2353     int orig_nb_streams;
2354
2355     memset(st_index, -1, sizeof(st_index));
2356     is->last_video_stream = is->video_stream = -1;
2357     is->last_audio_stream = is->audio_stream = -1;
2358     is->last_subtitle_stream = is->subtitle_stream = -1;
2359
2360     ic = avformat_alloc_context();
2361     ic->interrupt_callback.callback = decode_interrupt_cb;
2362     ic->interrupt_callback.opaque = is;
2363     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2364     if (err < 0) {
2365         print_error(is->filename, err);
2366         ret = -1;
2367         goto fail;
2368     }
2369     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2370         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2371         ret = AVERROR_OPTION_NOT_FOUND;
2372         goto fail;
2373     }
2374     is->ic = ic;
2375
2376     if (genpts)
2377         ic->flags |= AVFMT_FLAG_GENPTS;
2378
2379     opts = setup_find_stream_info_opts(ic, codec_opts);
2380     orig_nb_streams = ic->nb_streams;
2381
2382     err = avformat_find_stream_info(ic, opts);
2383     if (err < 0) {
2384         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2385         ret = -1;
2386         goto fail;
2387     }
2388     for (i = 0; i < orig_nb_streams; i++)
2389         av_dict_free(&opts[i]);
2390     av_freep(&opts);
2391
2392     if (ic->pb)
2393         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
2394
2395     if (seek_by_bytes < 0)
2396         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2397
2398     /* if seeking requested, we execute it */
2399     if (start_time != AV_NOPTS_VALUE) {
2400         int64_t timestamp;
2401
2402         timestamp = start_time;
2403         /* add the stream start time */
2404         if (ic->start_time != AV_NOPTS_VALUE)
2405             timestamp += ic->start_time;
2406         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2407         if (ret < 0) {
2408             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2409                     is->filename, (double)timestamp / AV_TIME_BASE);
2410         }
2411     }
2412
2413     for (i = 0; i < ic->nb_streams; i++)
2414         ic->streams[i]->discard = AVDISCARD_ALL;
2415     if (!video_disable)
2416         st_index[AVMEDIA_TYPE_VIDEO] =
2417             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2418                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2419     if (!audio_disable)
2420         st_index[AVMEDIA_TYPE_AUDIO] =
2421             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2422                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2423                                 st_index[AVMEDIA_TYPE_VIDEO],
2424                                 NULL, 0);
2425     if (!video_disable)
2426         st_index[AVMEDIA_TYPE_SUBTITLE] =
2427             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2428                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2429                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2430                                  st_index[AVMEDIA_TYPE_AUDIO] :
2431                                  st_index[AVMEDIA_TYPE_VIDEO]),
2432                                 NULL, 0);
2433     if (show_status) {
2434         av_dump_format(ic, 0, is->filename, 0);
2435     }
2436
2437     is->show_mode = show_mode;
2438
2439     /* open the streams */
2440     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2441         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2442     }
2443
2444     ret = -1;
2445     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2446         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2447     }
2448     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2449     if (is->show_mode == SHOW_MODE_NONE)
2450         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2451
2452     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2453         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2454     }
2455
2456     if (is->video_stream < 0 && is->audio_stream < 0) {
2457         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2458         ret = -1;
2459         goto fail;
2460     }
2461
2462     for (;;) {
2463         if (is->abort_request)
2464             break;
2465         if (is->paused != is->last_paused) {
2466             is->last_paused = is->paused;
2467             if (is->paused)
2468                 is->read_pause_return = av_read_pause(ic);
2469             else
2470                 av_read_play(ic);
2471         }
2472 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2473         if (is->paused &&
2474                 (!strcmp(ic->iformat->name, "rtsp") ||
2475                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2476             /* wait 10 ms to avoid trying to get another packet */
2477             /* XXX: horrible */
2478             SDL_Delay(10);
2479             continue;
2480         }
2481 #endif
2482         if (is->seek_req) {
2483             int64_t seek_target = is->seek_pos;
2484             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2485             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2486 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2487 //      of the seek_pos/seek_rel variables
2488
2489             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2490             if (ret < 0) {
2491                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2492             } else {
2493                 if (is->audio_stream >= 0) {
2494                     packet_queue_flush(&is->audioq);
2495                     packet_queue_put(&is->audioq, &flush_pkt);
2496                 }
2497                 if (is->subtitle_stream >= 0) {
2498                     packet_queue_flush(&is->subtitleq);
2499                     packet_queue_put(&is->subtitleq, &flush_pkt);
2500                 }
2501                 if (is->video_stream >= 0) {
2502                     packet_queue_flush(&is->videoq);
2503                     packet_queue_put(&is->videoq, &flush_pkt);
2504                 }
2505             }
2506             is->seek_req = 0;
2507             eof = 0;
2508         }
2509
2510         /* if the queue are full, no need to read more */
2511         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2512             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
2513                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request)
2514                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request))) {
2515             /* wait 10 ms */
2516             SDL_Delay(10);
2517             continue;
2518         }
2519         if (eof) {
2520             if (is->video_stream >= 0) {
2521                 av_init_packet(pkt);
2522                 pkt->data = NULL;
2523                 pkt->size = 0;
2524                 pkt->stream_index = is->video_stream;
2525                 packet_queue_put(&is->videoq, pkt);
2526             }
2527             if (is->audio_stream >= 0 &&
2528                 is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
2529                 av_init_packet(pkt);
2530                 pkt->data = NULL;
2531                 pkt->size = 0;
2532                 pkt->stream_index = is->audio_stream;
2533                 packet_queue_put(&is->audioq, pkt);
2534             }
2535             SDL_Delay(10);
2536             if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2537                 if (loop != 1 && (!loop || --loop)) {
2538                     stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2539                 } else if (autoexit) {
2540                     ret = AVERROR_EOF;
2541                     goto fail;
2542                 }
2543             }
2544             eof=0;
2545             continue;
2546         }
2547         ret = av_read_frame(ic, pkt);
2548         if (ret < 0) {
2549             if (ret == AVERROR_EOF || url_feof(ic->pb))
2550                 eof = 1;
2551             if (ic->pb && ic->pb->error)
2552                 break;
2553             SDL_Delay(100); /* wait for user event */
2554             continue;
2555         }
2556         /* check if packet is in play range specified by user, then queue, otherwise discard */
2557         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2558                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2559                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2560                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2561                 <= ((double)duration / 1000000);
2562         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2563             packet_queue_put(&is->audioq, pkt);
2564         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2565             packet_queue_put(&is->videoq, pkt);
2566         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2567             packet_queue_put(&is->subtitleq, pkt);
2568         } else {
2569             av_free_packet(pkt);
2570         }
2571     }
2572     /* wait until the end */
2573     while (!is->abort_request) {
2574         SDL_Delay(100);
2575     }
2576
2577     ret = 0;
2578  fail:
2579     /* close each stream */
2580     if (is->audio_stream >= 0)
2581         stream_component_close(is, is->audio_stream);
2582     if (is->video_stream >= 0)
2583         stream_component_close(is, is->video_stream);
2584     if (is->subtitle_stream >= 0)
2585         stream_component_close(is, is->subtitle_stream);
2586     if (is->ic) {
2587         avformat_close_input(&is->ic);
2588     }
2589
2590     if (ret != 0) {
2591         SDL_Event event;
2592
2593         event.type = FF_QUIT_EVENT;
2594         event.user.data1 = is;
2595         SDL_PushEvent(&event);
2596     }
2597     return 0;
2598 }
2599
2600 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2601 {
2602     VideoState *is;
2603
2604     is = av_mallocz(sizeof(VideoState));
2605     if (!is)
2606         return NULL;
2607     av_strlcpy(is->filename, filename, sizeof(is->filename));
2608     is->iformat = iformat;
2609     is->ytop    = 0;
2610     is->xleft   = 0;
2611
2612     /* start video display */
2613     is->pictq_mutex = SDL_CreateMutex();
2614     is->pictq_cond  = SDL_CreateCond();
2615
2616     is->subpq_mutex = SDL_CreateMutex();
2617     is->subpq_cond  = SDL_CreateCond();
2618
2619     packet_queue_init(&is->videoq);
2620     packet_queue_init(&is->audioq);
2621     packet_queue_init(&is->subtitleq);
2622
2623     is->av_sync_type = av_sync_type;
2624     is->read_tid     = SDL_CreateThread(read_thread, is);
2625     if (!is->read_tid) {
2626         av_free(is);
2627         return NULL;
2628     }
2629     return is;
2630 }
2631
2632 static void stream_cycle_channel(VideoState *is, int codec_type)
2633 {
2634     AVFormatContext *ic = is->ic;
2635     int start_index, stream_index;
2636     int old_index;
2637     AVStream *st;
2638
2639     if (codec_type == AVMEDIA_TYPE_VIDEO) {
2640         start_index = is->last_video_stream;
2641         old_index = is->video_stream;
2642     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
2643         start_index = is->last_audio_stream;
2644         old_index = is->audio_stream;
2645     } else {
2646         start_index = is->last_subtitle_stream;
2647         old_index = is->subtitle_stream;
2648     }
2649     stream_index = start_index;
2650     for (;;) {
2651         if (++stream_index >= is->ic->nb_streams)
2652         {
2653             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2654             {
2655                 stream_index = -1;
2656                 is->last_subtitle_stream = -1;
2657                 goto the_end;
2658             }
2659             if (start_index == -1)
2660                 return;
2661             stream_index = 0;
2662         }
2663         if (stream_index == start_index)
2664             return;
2665         st = ic->streams[stream_index];
2666         if (st->codec->codec_type == codec_type) {
2667             /* check that parameters are OK */
2668             switch (codec_type) {
2669             case AVMEDIA_TYPE_AUDIO:
2670                 if (st->codec->sample_rate != 0 &&
2671                     st->codec->channels != 0)
2672                     goto the_end;
2673                 break;
2674             case AVMEDIA_TYPE_VIDEO:
2675             case AVMEDIA_TYPE_SUBTITLE:
2676                 goto the_end;
2677             default:
2678                 break;
2679             }
2680         }
2681     }
2682  the_end:
2683     stream_component_close(is, old_index);
2684     stream_component_open(is, stream_index);
2685 }
2686
2687
2688 static void toggle_full_screen(VideoState *is)
2689 {
2690 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2691     /* OS X needs to reallocate the SDL overlays */
2692     int i;
2693     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
2694         is->pictq[i].reallocate = 1;
2695 #endif
2696     is_full_screen = !is_full_screen;
2697     video_open(is, 1);
2698 }
2699
2700 static void toggle_pause(VideoState *is)
2701 {
2702     stream_toggle_pause(is);
2703     is->step = 0;
2704 }
2705
2706 static void step_to_next_frame(VideoState *is)
2707 {
2708     /* if the stream is paused unpause it, then step */
2709     if (is->paused)
2710         stream_toggle_pause(is);
2711     is->step = 1;
2712 }
2713
2714 static void toggle_audio_display(VideoState *is)
2715 {
2716     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2717     is->show_mode = (is->show_mode + 1) % SHOW_MODE_NB;
2718     fill_rectangle(screen,
2719                 is->xleft, is->ytop, is->width, is->height,
2720                 bgcolor);
2721     SDL_UpdateRect(screen, is->xleft, is->ytop, is->width, is->height);
2722 }
2723
2724 /* handle an event sent by the GUI */
2725 static void event_loop(VideoState *cur_stream)
2726 {
2727     SDL_Event event;
2728     double incr, pos, frac;
2729
2730     for (;;) {
2731         double x;
2732         SDL_WaitEvent(&event);
2733         switch (event.type) {
2734         case SDL_KEYDOWN:
2735             if (exit_on_keydown) {
2736                 do_exit(cur_stream);
2737                 break;
2738             }
2739             switch (event.key.keysym.sym) {
2740             case SDLK_ESCAPE:
2741             case SDLK_q:
2742                 do_exit(cur_stream);
2743                 break;
2744             case SDLK_f:
2745                 toggle_full_screen(cur_stream);
2746                 cur_stream->force_refresh = 1;
2747                 break;
2748             case SDLK_p:
2749             case SDLK_SPACE:
2750                 toggle_pause(cur_stream);
2751                 break;
2752             case SDLK_s: // S: Step to next frame
2753                 step_to_next_frame(cur_stream);
2754                 break;
2755             case SDLK_a:
2756                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2757                 break;
2758             case SDLK_v:
2759                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2760                 break;
2761             case SDLK_t:
2762                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2763                 break;
2764             case SDLK_w:
2765                 toggle_audio_display(cur_stream);
2766                 cur_stream->force_refresh = 1;
2767                 break;
2768             case SDLK_PAGEUP:
2769                 incr = 600.0;
2770                 goto do_seek;
2771             case SDLK_PAGEDOWN:
2772                 incr = -600.0;
2773                 goto do_seek;
2774             case SDLK_LEFT:
2775                 incr = -10.0;
2776                 goto do_seek;
2777             case SDLK_RIGHT:
2778                 incr = 10.0;
2779                 goto do_seek;
2780             case SDLK_UP:
2781                 incr = 60.0;
2782                 goto do_seek;
2783             case SDLK_DOWN:
2784                 incr = -60.0;
2785             do_seek:
2786                     if (seek_by_bytes) {
2787                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2788                             pos = cur_stream->video_current_pos;
2789                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2790                             pos = cur_stream->audio_pkt.pos;
2791                         } else
2792                             pos = avio_tell(cur_stream->ic->pb);
2793                         if (cur_stream->ic->bit_rate)
2794                             incr *= cur_stream->ic->bit_rate / 8.0;
2795                         else
2796                             incr *= 180000.0;
2797                         pos += incr;
2798                         stream_seek(cur_stream, pos, incr, 1);
2799                     } else {
2800                         pos = get_master_clock(cur_stream);
2801                         pos += incr;
2802                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2803                     }
2804                 break;
2805             default:
2806                 break;
2807             }
2808             break;
2809         case SDL_VIDEOEXPOSE:
2810             cur_stream->force_refresh = 1;
2811             break;
2812         case SDL_MOUSEBUTTONDOWN:
2813             if (exit_on_mousedown) {
2814                 do_exit(cur_stream);
2815                 break;
2816             }
2817         case SDL_MOUSEMOTION:
2818             if (event.type == SDL_MOUSEBUTTONDOWN) {
2819                 x = event.button.x;
2820             } else {
2821                 if (event.motion.state != SDL_PRESSED)
2822                     break;
2823                 x = event.motion.x;
2824             }
2825                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2826                     uint64_t size =  avio_size(cur_stream->ic->pb);
2827                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2828                 } else {
2829                     int64_t ts;
2830                     int ns, hh, mm, ss;
2831                     int tns, thh, tmm, tss;
2832                     tns  = cur_stream->ic->duration / 1000000LL;
2833                     thh  = tns / 3600;
2834                     tmm  = (tns % 3600) / 60;
2835                     tss  = (tns % 60);
2836                     frac = x / cur_stream->width;
2837                     ns   = frac * tns;
2838                     hh   = ns / 3600;
2839                     mm   = (ns % 3600) / 60;
2840                     ss   = (ns % 60);
2841                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2842                             hh, mm, ss, thh, tmm, tss);
2843                     ts = frac * cur_stream->ic->duration;
2844                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2845                         ts += cur_stream->ic->start_time;
2846                     stream_seek(cur_stream, ts, 0, 0);
2847                 }
2848             break;
2849         case SDL_VIDEORESIZE:
2850                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2851                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2852                 screen_width  = cur_stream->width  = event.resize.w;
2853                 screen_height = cur_stream->height = event.resize.h;
2854                 cur_stream->force_refresh = 1;
2855             break;
2856         case SDL_QUIT:
2857         case FF_QUIT_EVENT:
2858             do_exit(cur_stream);
2859             break;
2860         case FF_ALLOC_EVENT:
2861             alloc_picture(event.user.data1);
2862             break;
2863         case FF_REFRESH_EVENT:
2864             video_refresh(event.user.data1);
2865             cur_stream->refresh = 0;
2866             break;
2867         default:
2868             break;
2869         }
2870     }
2871 }
2872
2873 static int opt_frame_size(const char *opt, const char *arg)
2874 {
2875     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
2876     return opt_default("video_size", arg);
2877 }
2878
2879 static int opt_width(const char *opt, const char *arg)
2880 {
2881     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2882     return 0;
2883 }
2884
2885 static int opt_height(const char *opt, const char *arg)
2886 {
2887     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2888     return 0;
2889 }
2890
2891 static int opt_format(const char *opt, const char *arg)
2892 {
2893     file_iformat = av_find_input_format(arg);
2894     if (!file_iformat) {
2895         fprintf(stderr, "Unknown input format: %s\n", arg);
2896         return AVERROR(EINVAL);
2897     }
2898     return 0;
2899 }
2900
2901 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2902 {
2903     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
2904     return opt_default("pixel_format", arg);
2905 }
2906
2907 static int opt_sync(const char *opt, const char *arg)
2908 {
2909     if (!strcmp(arg, "audio"))
2910         av_sync_type = AV_SYNC_AUDIO_MASTER;
2911     else if (!strcmp(arg, "video"))
2912         av_sync_type = AV_SYNC_VIDEO_MASTER;
2913     else if (!strcmp(arg, "ext"))
2914         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2915     else {
2916         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2917         exit(1);
2918     }
2919     return 0;
2920 }
2921
2922 static int opt_seek(const char *opt, const char *arg)
2923 {
2924     start_time = parse_time_or_die(opt, arg, 1);
2925     return 0;
2926 }
2927
2928 static int opt_duration(const char *opt, const char *arg)
2929 {
2930     duration = parse_time_or_die(opt, arg, 1);
2931     return 0;
2932 }
2933
2934 static int opt_show_mode(const char *opt, const char *arg)
2935 {
2936     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
2937                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
2938                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
2939                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
2940     return 0;
2941 }
2942
2943 static void opt_input_file(void *optctx, const char *filename)
2944 {
2945     if (input_filename) {
2946         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2947                 filename, input_filename);
2948         exit_program(1);
2949     }
2950     if (!strcmp(filename, "-"))
2951         filename = "pipe:";
2952     input_filename = filename;
2953 }
2954
2955 static int opt_codec(void *o, const char *opt, const char *arg)
2956 {
2957     switch(opt[strlen(opt)-1]){
2958     case 'a' :    audio_codec_name = arg; break;
2959     case 's' : subtitle_codec_name = arg; break;
2960     case 'v' :    video_codec_name = arg; break;
2961     }
2962     return 0;
2963 }
2964
2965 static int dummy;
2966
2967 static const OptionDef options[] = {
2968 #include "cmdutils_common_opts.h"
2969     { "x", HAS_ARG, { (void*)opt_width }, "force displayed width", "width" },
2970     { "y", HAS_ARG, { (void*)opt_height }, "force displayed height", "height" },
2971     { "s", HAS_ARG | OPT_VIDEO, { (void*)opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2972     { "fs", OPT_BOOL, { (void*)&is_full_screen }, "force full screen" },
2973     { "an", OPT_BOOL, { (void*)&audio_disable }, "disable audio" },
2974     { "vn", OPT_BOOL, { (void*)&video_disable }, "disable video" },
2975     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2976     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2977     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2978     { "ss", HAS_ARG, { (void*)&opt_seek }, "seek to a given position in seconds", "pos" },
2979     { "t", HAS_ARG, { (void*)&opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
2980     { "bytes", OPT_INT | HAS_ARG, { (void*)&seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2981     { "nodisp", OPT_BOOL, { (void*)&display_disable }, "disable graphical display" },
2982     { "f", HAS_ARG, { (void*)opt_format }, "force format", "fmt" },
2983     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { (void*)opt_frame_pix_fmt }, "set pixel format", "format" },
2984     { "stats", OPT_BOOL | OPT_EXPERT, { (void*)&show_status }, "show status", "" },
2985     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&workaround_bugs }, "workaround bugs", "" },
2986     { "fast", OPT_BOOL | OPT_EXPERT, { (void*)&fast }, "non spec compliant optimizations", "" },
2987     { "genpts", OPT_BOOL | OPT_EXPERT, { (void*)&genpts }, "generate pts", "" },
2988     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2989     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&lowres }, "", "" },
2990     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_loop_filter }, "", "" },
2991     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_frame }, "", "" },
2992     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_idct }, "", "" },
2993     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&idct }, "set idct algo",  "algo" },
2994     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&error_concealment }, "set error concealment options",  "bit_mask" },
2995     { "sync", HAS_ARG | OPT_EXPERT, { (void*)opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
2996     { "autoexit", OPT_BOOL | OPT_EXPERT, { (void*)&autoexit }, "exit at the end", "" },
2997     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_keydown }, "exit on key down", "" },
2998     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_mousedown }, "exit on mouse down", "" },
2999     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&loop }, "set number of times the playback shall be looped", "loop count" },
3000     { "framedrop", OPT_BOOL | OPT_EXPERT, { (void*)&framedrop }, "drop frames when cpu is too slow", "" },
3001     { "window_title", OPT_STRING | HAS_ARG, { (void*)&window_title }, "set window title", "window title" },
3002 #if CONFIG_AVFILTER
3003     { "vf", OPT_STRING | HAS_ARG, { (void*)&vfilters }, "video filters", "filter list" },
3004 #endif
3005     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { (void*)&rdftspeed }, "rdft speed", "msecs" },
3006     { "showmode", HAS_ARG, {(void*)opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3007     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { (void*)opt_default }, "generic catch all option", "" },
3008     { "i", OPT_BOOL, {(void *)&dummy}, "read specified file", "input_file"},
3009     { "codec", HAS_ARG | OPT_FUNC2, {(void*)opt_codec}, "force decoder", "decoder" },
3010     { NULL, },
3011 };
3012
3013 static void show_usage(void)
3014 {
3015     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3016     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3017     av_log(NULL, AV_LOG_INFO, "\n");
3018 }
3019
3020 static int opt_help(const char *opt, const char *arg)
3021 {
3022     av_log_set_callback(log_callback_help);
3023     show_usage();
3024     show_help_options(options, "Main options:\n",
3025                       OPT_EXPERT, 0);
3026     show_help_options(options, "\nAdvanced options:\n",
3027                       OPT_EXPERT, OPT_EXPERT);
3028     printf("\n");
3029     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3030     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3031 #if !CONFIG_AVFILTER
3032     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3033 #endif
3034     printf("\nWhile playing:\n"
3035            "q, ESC              quit\n"
3036            "f                   toggle full screen\n"
3037            "p, SPC              pause\n"
3038            "a                   cycle audio channel\n"
3039            "v                   cycle video channel\n"
3040            "t                   cycle subtitle channel\n"
3041            "w                   show audio waves\n"
3042            "s                   activate frame-step mode\n"
3043            "left/right          seek backward/forward 10 seconds\n"
3044            "down/up             seek backward/forward 1 minute\n"
3045            "page down/page up   seek backward/forward 10 minutes\n"
3046            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3047            );
3048     return 0;
3049 }
3050
3051 static int lockmgr(void **mtx, enum AVLockOp op)
3052 {
3053    switch(op) {
3054       case AV_LOCK_CREATE:
3055           *mtx = SDL_CreateMutex();
3056           if(!*mtx)
3057               return 1;
3058           return 0;
3059       case AV_LOCK_OBTAIN:
3060           return !!SDL_LockMutex(*mtx);
3061       case AV_LOCK_RELEASE:
3062           return !!SDL_UnlockMutex(*mtx);
3063       case AV_LOCK_DESTROY:
3064           SDL_DestroyMutex(*mtx);
3065           return 0;
3066    }
3067    return 1;
3068 }
3069
3070 /* Called from the main */
3071 int main(int argc, char **argv)
3072 {
3073     int flags;
3074     VideoState *is;
3075     char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy";
3076
3077     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3078     parse_loglevel(argc, argv, options);
3079
3080     /* register all codecs, demux and protocols */
3081     avcodec_register_all();
3082 #if CONFIG_AVDEVICE
3083     avdevice_register_all();
3084 #endif
3085 #if CONFIG_AVFILTER
3086     avfilter_register_all();
3087 #endif
3088     av_register_all();
3089     avformat_network_init();
3090
3091     init_opts();
3092
3093     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
3094     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
3095
3096     show_banner(argc, argv, options);
3097
3098     parse_options(NULL, argc, argv, options, opt_input_file);
3099
3100     if (!input_filename) {
3101         show_usage();
3102         fprintf(stderr, "An input file must be specified\n");
3103         fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3104         exit(1);
3105     }
3106
3107     if (display_disable) {
3108         video_disable = 1;
3109     }
3110     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3111     if (audio_disable)
3112         flags &= ~SDL_INIT_AUDIO;
3113     if (display_disable)
3114         SDL_putenv(dummy_videodriver); /* For the event queue, we always need a video driver. */
3115 #if !defined(__MINGW32__) && !defined(__APPLE__)
3116     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3117 #endif
3118     if (SDL_Init (flags)) {
3119         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3120         fprintf(stderr, "(Did you set the DISPLAY variable?)\n");
3121         exit(1);
3122     }
3123
3124     if (!display_disable) {
3125 #if HAVE_SDL_VIDEO_SIZE
3126         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3127         fs_screen_width = vi->current_w;
3128         fs_screen_height = vi->current_h;
3129 #endif
3130     }
3131
3132     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3133     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3134     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3135
3136     if (av_lockmgr_register(lockmgr)) {
3137         fprintf(stderr, "Could not initialize lock manager!\n");
3138         do_exit(NULL);
3139     }
3140
3141     av_init_packet(&flush_pkt);
3142     flush_pkt.data = (char *)(intptr_t)"FLUSH";
3143
3144     is = stream_open(input_filename, file_iformat);
3145     if (!is) {
3146         fprintf(stderr, "Failed to initialize VideoState!\n");
3147         do_exit(NULL);
3148     }
3149
3150     event_loop(is);
3151
3152     /* never returns */
3153
3154     return 0;
3155 }