ffplay: factor out picture freeing code
[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 "libavutil/time.h"
41 #include "libavformat/avformat.h"
42 #include "libavdevice/avdevice.h"
43 #include "libswscale/swscale.h"
44 #include "libavutil/opt.h"
45 #include "libavcodec/avfft.h"
46 #include "libswresample/swresample.h"
47
48 #if CONFIG_AVFILTER
49 # include "libavfilter/avcodec.h"
50 # include "libavfilter/avfilter.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 <assert.h>
61
62 const char program_name[] = "ffplay";
63 const int program_birth_year = 2003;
64
65 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
66 #define MIN_FRAMES 5
67
68 /* SDL audio buffer size, in samples. Should be small to have precise
69    A/V sync as SDL does not have hardware buffer fullness info. */
70 #define SDL_AUDIO_BUFFER_SIZE 1024
71
72 /* no AV sync correction is done if below the minimum AV sync threshold */
73 #define AV_SYNC_THRESHOLD_MIN 0.01
74 /* AV sync correction is done if above the maximum AV sync threshold */
75 #define AV_SYNC_THRESHOLD_MAX 0.1
76 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
77 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
78 /* no AV correction is done if too big error */
79 #define AV_NOSYNC_THRESHOLD 10.0
80
81 /* maximum audio speed change to get correct sync */
82 #define SAMPLE_CORRECTION_PERCENT_MAX 10
83
84 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
85 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
86 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
87 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
88
89 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
90 #define AUDIO_DIFF_AVG_NB   20
91
92 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
93 #define REFRESH_RATE 0.01
94
95 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
96 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
97 #define SAMPLE_ARRAY_SIZE (8 * 65536)
98
99 #define CURSOR_HIDE_DELAY 1000000
100
101 static int64_t sws_flags = SWS_BICUBIC;
102
103 typedef struct MyAVPacketList {
104     AVPacket pkt;
105     struct MyAVPacketList *next;
106     int serial;
107 } MyAVPacketList;
108
109 typedef struct PacketQueue {
110     MyAVPacketList *first_pkt, *last_pkt;
111     int nb_packets;
112     int size;
113     int abort_request;
114     int serial;
115     SDL_mutex *mutex;
116     SDL_cond *cond;
117 } PacketQueue;
118
119 #define VIDEO_PICTURE_QUEUE_SIZE 3
120 #define SUBPICTURE_QUEUE_SIZE 4
121
122 typedef struct VideoPicture {
123     double pts;             // presentation timestamp for this picture
124     int64_t pos;            // byte position in file
125     SDL_Overlay *bmp;
126     int width, height; /* source height & width */
127     int allocated;
128     int reallocate;
129     int serial;
130
131     AVRational sar;
132 } VideoPicture;
133
134 typedef struct SubPicture {
135     double pts; /* presentation time stamp for this picture */
136     AVSubtitle sub;
137     int serial;
138 } SubPicture;
139
140 typedef struct AudioParams {
141     int freq;
142     int channels;
143     int64_t channel_layout;
144     enum AVSampleFormat fmt;
145 } AudioParams;
146
147 typedef struct Clock {
148     double pts;           /* clock base */
149     double pts_drift;     /* clock base minus time at which we updated the clock */
150     double last_updated;
151     double speed;
152     int serial;           /* clock is based on a packet with this serial */
153     int paused;
154     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
155 } Clock;
156
157 enum {
158     AV_SYNC_AUDIO_MASTER, /* default choice */
159     AV_SYNC_VIDEO_MASTER,
160     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
161 };
162
163 typedef struct VideoState {
164     SDL_Thread *read_tid;
165     SDL_Thread *video_tid;
166     AVInputFormat *iformat;
167     int no_background;
168     int abort_request;
169     int force_refresh;
170     int paused;
171     int last_paused;
172     int queue_attachments_req;
173     int seek_req;
174     int seek_flags;
175     int64_t seek_pos;
176     int64_t seek_rel;
177     int read_pause_return;
178     AVFormatContext *ic;
179     int realtime;
180     int audio_finished;
181     int video_finished;
182
183     Clock audclk;
184     Clock vidclk;
185     Clock extclk;
186
187     int audio_stream;
188
189     int av_sync_type;
190
191     double audio_clock;
192     int audio_clock_serial;
193     double audio_diff_cum; /* used for AV difference average computation */
194     double audio_diff_avg_coef;
195     double audio_diff_threshold;
196     int audio_diff_avg_count;
197     AVStream *audio_st;
198     PacketQueue audioq;
199     int audio_hw_buf_size;
200     uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
201     uint8_t *audio_buf;
202     uint8_t *audio_buf1;
203     unsigned int audio_buf_size; /* in bytes */
204     unsigned int audio_buf1_size;
205     int audio_buf_index; /* in bytes */
206     int audio_write_buf_size;
207     int audio_buf_frames_pending;
208     AVPacket audio_pkt_temp;
209     AVPacket audio_pkt;
210     int audio_pkt_temp_serial;
211     int audio_last_serial;
212     struct AudioParams audio_src;
213 #if CONFIG_AVFILTER
214     struct AudioParams audio_filter_src;
215 #endif
216     struct AudioParams audio_tgt;
217     struct SwrContext *swr_ctx;
218     int frame_drops_early;
219     int frame_drops_late;
220     AVFrame *frame;
221     int64_t audio_frame_next_pts;
222
223     enum ShowMode {
224         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
225     } show_mode;
226     int16_t sample_array[SAMPLE_ARRAY_SIZE];
227     int sample_array_index;
228     int last_i_start;
229     RDFTContext *rdft;
230     int rdft_bits;
231     FFTSample *rdft_data;
232     int xpos;
233     double last_vis_time;
234
235     SDL_Thread *subtitle_tid;
236     int subtitle_stream;
237     AVStream *subtitle_st;
238     PacketQueue subtitleq;
239     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
240     int subpq_size, subpq_rindex, subpq_windex;
241     SDL_mutex *subpq_mutex;
242     SDL_cond *subpq_cond;
243
244     double frame_timer;
245     double frame_last_pts;
246     double frame_last_duration;
247     double frame_last_dropped_pts;
248     double frame_last_returned_time;
249     double frame_last_filter_delay;
250     int64_t frame_last_dropped_pos;
251     int frame_last_dropped_serial;
252     int video_stream;
253     AVStream *video_st;
254     PacketQueue videoq;
255     int64_t video_current_pos;      // current displayed file pos
256     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
257     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
258     int pictq_size, pictq_rindex, pictq_windex;
259     SDL_mutex *pictq_mutex;
260     SDL_cond *pictq_cond;
261 #if !CONFIG_AVFILTER
262     struct SwsContext *img_convert_ctx;
263 #endif
264     SDL_Rect last_display_rect;
265
266     char filename[1024];
267     int width, height, xleft, ytop;
268     int step;
269
270 #if CONFIG_AVFILTER
271     AVFilterContext *in_video_filter;   // the first filter in the video chain
272     AVFilterContext *out_video_filter;  // the last filter in the video chain
273     AVFilterContext *in_audio_filter;   // the first filter in the audio chain
274     AVFilterContext *out_audio_filter;  // the last filter in the audio chain
275     AVFilterGraph *agraph;              // audio filter graph
276 #endif
277
278     int last_video_stream, last_audio_stream, last_subtitle_stream;
279
280     SDL_cond *continue_read_thread;
281 } VideoState;
282
283 /* options specified by the user */
284 static AVInputFormat *file_iformat;
285 static const char *input_filename;
286 static const char *window_title;
287 static int fs_screen_width;
288 static int fs_screen_height;
289 static int default_width  = 640;
290 static int default_height = 480;
291 static int screen_width  = 0;
292 static int screen_height = 0;
293 static int audio_disable;
294 static int video_disable;
295 static int subtitle_disable;
296 static int wanted_stream[AVMEDIA_TYPE_NB] = {
297     [AVMEDIA_TYPE_AUDIO]    = -1,
298     [AVMEDIA_TYPE_VIDEO]    = -1,
299     [AVMEDIA_TYPE_SUBTITLE] = -1,
300 };
301 static int seek_by_bytes = -1;
302 static int display_disable;
303 static int show_status = 1;
304 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
305 static int64_t start_time = AV_NOPTS_VALUE;
306 static int64_t duration = AV_NOPTS_VALUE;
307 static int workaround_bugs = 1;
308 static int fast = 0;
309 static int genpts = 0;
310 static int lowres = 0;
311 static int error_concealment = 3;
312 static int decoder_reorder_pts = -1;
313 static int autoexit;
314 static int exit_on_keydown;
315 static int exit_on_mousedown;
316 static int loop = 1;
317 static int framedrop = -1;
318 static int infinite_buffer = -1;
319 static enum ShowMode show_mode = SHOW_MODE_NONE;
320 static const char *audio_codec_name;
321 static const char *subtitle_codec_name;
322 static const char *video_codec_name;
323 double rdftspeed = 0.02;
324 static int64_t cursor_last_shown;
325 static int cursor_hidden = 0;
326 #if CONFIG_AVFILTER
327 static char *vfilters = NULL;
328 static char *afilters = NULL;
329 #endif
330
331 /* current context */
332 static int is_full_screen;
333 static int64_t audio_callback_time;
334
335 static AVPacket flush_pkt;
336
337 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
338 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
339
340 static SDL_Surface *screen;
341
342 static inline
343 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
344                    enum AVSampleFormat fmt2, int64_t channel_count2)
345 {
346     /* If channel count == 1, planar and non-planar formats are the same */
347     if (channel_count1 == 1 && channel_count2 == 1)
348         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
349     else
350         return channel_count1 != channel_count2 || fmt1 != fmt2;
351 }
352
353 static inline
354 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
355 {
356     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
357         return channel_layout;
358     else
359         return 0;
360 }
361
362 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
363
364 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
365 {
366     MyAVPacketList *pkt1;
367
368     if (q->abort_request)
369        return -1;
370
371     pkt1 = av_malloc(sizeof(MyAVPacketList));
372     if (!pkt1)
373         return -1;
374     pkt1->pkt = *pkt;
375     pkt1->next = NULL;
376     if (pkt == &flush_pkt)
377         q->serial++;
378     pkt1->serial = q->serial;
379
380     if (!q->last_pkt)
381         q->first_pkt = pkt1;
382     else
383         q->last_pkt->next = pkt1;
384     q->last_pkt = pkt1;
385     q->nb_packets++;
386     q->size += pkt1->pkt.size + sizeof(*pkt1);
387     /* XXX: should duplicate packet data in DV case */
388     SDL_CondSignal(q->cond);
389     return 0;
390 }
391
392 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
393 {
394     int ret;
395
396     /* duplicate the packet */
397     if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
398         return -1;
399
400     SDL_LockMutex(q->mutex);
401     ret = packet_queue_put_private(q, pkt);
402     SDL_UnlockMutex(q->mutex);
403
404     if (pkt != &flush_pkt && ret < 0)
405         av_free_packet(pkt);
406
407     return ret;
408 }
409
410 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
411 {
412     AVPacket pkt1, *pkt = &pkt1;
413     av_init_packet(pkt);
414     pkt->data = NULL;
415     pkt->size = 0;
416     pkt->stream_index = stream_index;
417     return packet_queue_put(q, pkt);
418 }
419
420 /* packet queue handling */
421 static void packet_queue_init(PacketQueue *q)
422 {
423     memset(q, 0, sizeof(PacketQueue));
424     q->mutex = SDL_CreateMutex();
425     q->cond = SDL_CreateCond();
426     q->abort_request = 1;
427 }
428
429 static void packet_queue_flush(PacketQueue *q)
430 {
431     MyAVPacketList *pkt, *pkt1;
432
433     SDL_LockMutex(q->mutex);
434     for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
435         pkt1 = pkt->next;
436         av_free_packet(&pkt->pkt);
437         av_freep(&pkt);
438     }
439     q->last_pkt = NULL;
440     q->first_pkt = NULL;
441     q->nb_packets = 0;
442     q->size = 0;
443     SDL_UnlockMutex(q->mutex);
444 }
445
446 static void packet_queue_destroy(PacketQueue *q)
447 {
448     packet_queue_flush(q);
449     SDL_DestroyMutex(q->mutex);
450     SDL_DestroyCond(q->cond);
451 }
452
453 static void packet_queue_abort(PacketQueue *q)
454 {
455     SDL_LockMutex(q->mutex);
456
457     q->abort_request = 1;
458
459     SDL_CondSignal(q->cond);
460
461     SDL_UnlockMutex(q->mutex);
462 }
463
464 static void packet_queue_start(PacketQueue *q)
465 {
466     SDL_LockMutex(q->mutex);
467     q->abort_request = 0;
468     packet_queue_put_private(q, &flush_pkt);
469     SDL_UnlockMutex(q->mutex);
470 }
471
472 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
473 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
474 {
475     MyAVPacketList *pkt1;
476     int ret;
477
478     SDL_LockMutex(q->mutex);
479
480     for (;;) {
481         if (q->abort_request) {
482             ret = -1;
483             break;
484         }
485
486         pkt1 = q->first_pkt;
487         if (pkt1) {
488             q->first_pkt = pkt1->next;
489             if (!q->first_pkt)
490                 q->last_pkt = NULL;
491             q->nb_packets--;
492             q->size -= pkt1->pkt.size + sizeof(*pkt1);
493             *pkt = pkt1->pkt;
494             if (serial)
495                 *serial = pkt1->serial;
496             av_free(pkt1);
497             ret = 1;
498             break;
499         } else if (!block) {
500             ret = 0;
501             break;
502         } else {
503             SDL_CondWait(q->cond, q->mutex);
504         }
505     }
506     SDL_UnlockMutex(q->mutex);
507     return ret;
508 }
509
510 static inline void fill_rectangle(SDL_Surface *screen,
511                                   int x, int y, int w, int h, int color, int update)
512 {
513     SDL_Rect rect;
514     rect.x = x;
515     rect.y = y;
516     rect.w = w;
517     rect.h = h;
518     SDL_FillRect(screen, &rect, color);
519     if (update && w > 0 && h > 0)
520         SDL_UpdateRect(screen, x, y, w, h);
521 }
522
523 /* draw only the border of a rectangle */
524 static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
525 {
526     int w1, w2, h1, h2;
527
528     /* fill the background */
529     w1 = x;
530     if (w1 < 0)
531         w1 = 0;
532     w2 = width - (x + w);
533     if (w2 < 0)
534         w2 = 0;
535     h1 = y;
536     if (h1 < 0)
537         h1 = 0;
538     h2 = height - (y + h);
539     if (h2 < 0)
540         h2 = 0;
541     fill_rectangle(screen,
542                    xleft, ytop,
543                    w1, height,
544                    color, update);
545     fill_rectangle(screen,
546                    xleft + width - w2, ytop,
547                    w2, height,
548                    color, update);
549     fill_rectangle(screen,
550                    xleft + w1, ytop,
551                    width - w1 - w2, h1,
552                    color, update);
553     fill_rectangle(screen,
554                    xleft + w1, ytop + height - h2,
555                    width - w1 - w2, h2,
556                    color, update);
557 }
558
559 #define ALPHA_BLEND(a, oldp, newp, s)\
560 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
561
562 #define RGBA_IN(r, g, b, a, s)\
563 {\
564     unsigned int v = ((const uint32_t *)(s))[0];\
565     a = (v >> 24) & 0xff;\
566     r = (v >> 16) & 0xff;\
567     g = (v >> 8) & 0xff;\
568     b = v & 0xff;\
569 }
570
571 #define YUVA_IN(y, u, v, a, s, pal)\
572 {\
573     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
574     a = (val >> 24) & 0xff;\
575     y = (val >> 16) & 0xff;\
576     u = (val >> 8) & 0xff;\
577     v = val & 0xff;\
578 }
579
580 #define YUVA_OUT(d, y, u, v, a)\
581 {\
582     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
583 }
584
585
586 #define BPP 1
587
588 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
589 {
590     int wrap, wrap3, width2, skip2;
591     int y, u, v, a, u1, v1, a1, w, h;
592     uint8_t *lum, *cb, *cr;
593     const uint8_t *p;
594     const uint32_t *pal;
595     int dstx, dsty, dstw, dsth;
596
597     dstw = av_clip(rect->w, 0, imgw);
598     dsth = av_clip(rect->h, 0, imgh);
599     dstx = av_clip(rect->x, 0, imgw - dstw);
600     dsty = av_clip(rect->y, 0, imgh - dsth);
601     lum = dst->data[0] + dsty * dst->linesize[0];
602     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
603     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
604
605     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
606     skip2 = dstx >> 1;
607     wrap = dst->linesize[0];
608     wrap3 = rect->pict.linesize[0];
609     p = rect->pict.data[0];
610     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
611
612     if (dsty & 1) {
613         lum += dstx;
614         cb += skip2;
615         cr += skip2;
616
617         if (dstx & 1) {
618             YUVA_IN(y, u, v, a, p, pal);
619             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
620             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
621             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
622             cb++;
623             cr++;
624             lum++;
625             p += BPP;
626         }
627         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
628             YUVA_IN(y, u, v, a, p, pal);
629             u1 = u;
630             v1 = v;
631             a1 = a;
632             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
633
634             YUVA_IN(y, u, v, a, p + BPP, pal);
635             u1 += u;
636             v1 += v;
637             a1 += a;
638             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
639             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
640             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
641             cb++;
642             cr++;
643             p += 2 * BPP;
644             lum += 2;
645         }
646         if (w) {
647             YUVA_IN(y, u, v, a, p, pal);
648             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
649             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
650             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
651             p++;
652             lum++;
653         }
654         p += wrap3 - dstw * BPP;
655         lum += wrap - dstw - dstx;
656         cb += dst->linesize[1] - width2 - skip2;
657         cr += dst->linesize[2] - width2 - skip2;
658     }
659     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
660         lum += dstx;
661         cb += skip2;
662         cr += skip2;
663
664         if (dstx & 1) {
665             YUVA_IN(y, u, v, a, p, pal);
666             u1 = u;
667             v1 = v;
668             a1 = a;
669             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
670             p += wrap3;
671             lum += wrap;
672             YUVA_IN(y, u, v, a, p, pal);
673             u1 += u;
674             v1 += v;
675             a1 += a;
676             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
677             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
678             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
679             cb++;
680             cr++;
681             p += -wrap3 + BPP;
682             lum += -wrap + 1;
683         }
684         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
685             YUVA_IN(y, u, v, a, p, pal);
686             u1 = u;
687             v1 = v;
688             a1 = a;
689             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
690
691             YUVA_IN(y, u, v, a, p + BPP, pal);
692             u1 += u;
693             v1 += v;
694             a1 += a;
695             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
696             p += wrap3;
697             lum += wrap;
698
699             YUVA_IN(y, u, v, a, p, pal);
700             u1 += u;
701             v1 += v;
702             a1 += a;
703             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
704
705             YUVA_IN(y, u, v, a, p + BPP, pal);
706             u1 += u;
707             v1 += v;
708             a1 += a;
709             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
710
711             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
712             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
713
714             cb++;
715             cr++;
716             p += -wrap3 + 2 * BPP;
717             lum += -wrap + 2;
718         }
719         if (w) {
720             YUVA_IN(y, u, v, a, p, pal);
721             u1 = u;
722             v1 = v;
723             a1 = a;
724             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
725             p += wrap3;
726             lum += wrap;
727             YUVA_IN(y, u, v, a, p, pal);
728             u1 += u;
729             v1 += v;
730             a1 += a;
731             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
732             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
733             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
734             cb++;
735             cr++;
736             p += -wrap3 + BPP;
737             lum += -wrap + 1;
738         }
739         p += wrap3 + (wrap3 - dstw * BPP);
740         lum += wrap + (wrap - dstw - dstx);
741         cb += dst->linesize[1] - width2 - skip2;
742         cr += dst->linesize[2] - width2 - skip2;
743     }
744     /* handle odd height */
745     if (h) {
746         lum += dstx;
747         cb += skip2;
748         cr += skip2;
749
750         if (dstx & 1) {
751             YUVA_IN(y, u, v, a, p, pal);
752             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
753             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
754             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
755             cb++;
756             cr++;
757             lum++;
758             p += BPP;
759         }
760         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
761             YUVA_IN(y, u, v, a, p, pal);
762             u1 = u;
763             v1 = v;
764             a1 = a;
765             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
766
767             YUVA_IN(y, u, v, a, p + BPP, pal);
768             u1 += u;
769             v1 += v;
770             a1 += a;
771             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
772             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
773             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
774             cb++;
775             cr++;
776             p += 2 * BPP;
777             lum += 2;
778         }
779         if (w) {
780             YUVA_IN(y, u, v, a, p, pal);
781             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
782             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
783             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
784         }
785     }
786 }
787
788 static void free_picture(VideoPicture *vp)
789 {
790      if (vp->bmp) {
791          SDL_FreeYUVOverlay(vp->bmp);
792          vp->bmp = NULL;
793      }
794 }
795
796 static void free_subpicture(SubPicture *sp)
797 {
798     avsubtitle_free(&sp->sub);
799 }
800
801 static void calculate_display_rect(SDL_Rect *rect, int scr_xleft, int scr_ytop, int scr_width, int scr_height, VideoPicture *vp)
802 {
803     float aspect_ratio;
804     int width, height, x, y;
805
806     if (vp->sar.num == 0)
807         aspect_ratio = 0;
808     else
809         aspect_ratio = av_q2d(vp->sar);
810
811     if (aspect_ratio <= 0.0)
812         aspect_ratio = 1.0;
813     aspect_ratio *= (float)vp->width / (float)vp->height;
814
815     /* XXX: we suppose the screen has a 1.0 pixel ratio */
816     height = scr_height;
817     width = ((int)rint(height * aspect_ratio)) & ~1;
818     if (width > scr_width) {
819         width = scr_width;
820         height = ((int)rint(width / aspect_ratio)) & ~1;
821     }
822     x = (scr_width - width) / 2;
823     y = (scr_height - height) / 2;
824     rect->x = scr_xleft + x;
825     rect->y = scr_ytop  + y;
826     rect->w = FFMAX(width,  1);
827     rect->h = FFMAX(height, 1);
828 }
829
830 static void video_image_display(VideoState *is)
831 {
832     VideoPicture *vp;
833     SubPicture *sp;
834     AVPicture pict;
835     SDL_Rect rect;
836     int i;
837
838     vp = &is->pictq[is->pictq_rindex];
839     if (vp->bmp) {
840         if (is->subtitle_st) {
841             if (is->subpq_size > 0) {
842                 sp = &is->subpq[is->subpq_rindex];
843
844                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
845                     SDL_LockYUVOverlay (vp->bmp);
846
847                     pict.data[0] = vp->bmp->pixels[0];
848                     pict.data[1] = vp->bmp->pixels[2];
849                     pict.data[2] = vp->bmp->pixels[1];
850
851                     pict.linesize[0] = vp->bmp->pitches[0];
852                     pict.linesize[1] = vp->bmp->pitches[2];
853                     pict.linesize[2] = vp->bmp->pitches[1];
854
855                     for (i = 0; i < sp->sub.num_rects; i++)
856                         blend_subrect(&pict, sp->sub.rects[i],
857                                       vp->bmp->w, vp->bmp->h);
858
859                     SDL_UnlockYUVOverlay (vp->bmp);
860                 }
861             }
862         }
863
864         calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp);
865
866         SDL_DisplayYUVOverlay(vp->bmp, &rect);
867
868         if (rect.x != is->last_display_rect.x || rect.y != is->last_display_rect.y || rect.w != is->last_display_rect.w || rect.h != is->last_display_rect.h || is->force_refresh) {
869             int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
870             fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
871             is->last_display_rect = rect;
872         }
873     }
874 }
875
876 static inline int compute_mod(int a, int b)
877 {
878     return a < 0 ? a%b + b : a%b;
879 }
880
881 static void video_audio_display(VideoState *s)
882 {
883     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
884     int ch, channels, h, h2, bgcolor, fgcolor;
885     int64_t time_diff;
886     int rdft_bits, nb_freq;
887
888     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
889         ;
890     nb_freq = 1 << (rdft_bits - 1);
891
892     /* compute display index : center on currently output samples */
893     channels = s->audio_tgt.channels;
894     nb_display_channels = channels;
895     if (!s->paused) {
896         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
897         n = 2 * channels;
898         delay = s->audio_write_buf_size;
899         delay /= n;
900
901         /* to be more precise, we take into account the time spent since
902            the last buffer computation */
903         if (audio_callback_time) {
904             time_diff = av_gettime() - audio_callback_time;
905             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
906         }
907
908         delay += 2 * data_used;
909         if (delay < data_used)
910             delay = data_used;
911
912         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
913         if (s->show_mode == SHOW_MODE_WAVES) {
914             h = INT_MIN;
915             for (i = 0; i < 1000; i += channels) {
916                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
917                 int a = s->sample_array[idx];
918                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
919                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
920                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
921                 int score = a - d;
922                 if (h < score && (b ^ c) < 0) {
923                     h = score;
924                     i_start = idx;
925                 }
926             }
927         }
928
929         s->last_i_start = i_start;
930     } else {
931         i_start = s->last_i_start;
932     }
933
934     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
935     if (s->show_mode == SHOW_MODE_WAVES) {
936         fill_rectangle(screen,
937                        s->xleft, s->ytop, s->width, s->height,
938                        bgcolor, 0);
939
940         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
941
942         /* total height for one channel */
943         h = s->height / nb_display_channels;
944         /* graph height / 2 */
945         h2 = (h * 9) / 20;
946         for (ch = 0; ch < nb_display_channels; ch++) {
947             i = i_start + ch;
948             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
949             for (x = 0; x < s->width; x++) {
950                 y = (s->sample_array[i] * h2) >> 15;
951                 if (y < 0) {
952                     y = -y;
953                     ys = y1 - y;
954                 } else {
955                     ys = y1;
956                 }
957                 fill_rectangle(screen,
958                                s->xleft + x, ys, 1, y,
959                                fgcolor, 0);
960                 i += channels;
961                 if (i >= SAMPLE_ARRAY_SIZE)
962                     i -= SAMPLE_ARRAY_SIZE;
963             }
964         }
965
966         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
967
968         for (ch = 1; ch < nb_display_channels; ch++) {
969             y = s->ytop + ch * h;
970             fill_rectangle(screen,
971                            s->xleft, y, s->width, 1,
972                            fgcolor, 0);
973         }
974         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
975     } else {
976         nb_display_channels= FFMIN(nb_display_channels, 2);
977         if (rdft_bits != s->rdft_bits) {
978             av_rdft_end(s->rdft);
979             av_free(s->rdft_data);
980             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
981             s->rdft_bits = rdft_bits;
982             s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
983         }
984         {
985             FFTSample *data[2];
986             for (ch = 0; ch < nb_display_channels; ch++) {
987                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
988                 i = i_start + ch;
989                 for (x = 0; x < 2 * nb_freq; x++) {
990                     double w = (x-nb_freq) * (1.0 / nb_freq);
991                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
992                     i += channels;
993                     if (i >= SAMPLE_ARRAY_SIZE)
994                         i -= SAMPLE_ARRAY_SIZE;
995                 }
996                 av_rdft_calc(s->rdft, data[ch]);
997             }
998             /* Least efficient way to do this, we should of course
999              * directly access it but it is more than fast enough. */
1000             for (y = 0; y < s->height; y++) {
1001                 double w = 1 / sqrt(nb_freq);
1002                 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]));
1003                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
1004                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
1005                 a = FFMIN(a, 255);
1006                 b = FFMIN(b, 255);
1007                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
1008
1009                 fill_rectangle(screen,
1010                             s->xpos, s->height-y, 1, 1,
1011                             fgcolor, 0);
1012             }
1013         }
1014         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
1015         if (!s->paused)
1016             s->xpos++;
1017         if (s->xpos >= s->width)
1018             s->xpos= s->xleft;
1019     }
1020 }
1021
1022 static void stream_close(VideoState *is)
1023 {
1024     int i;
1025     /* XXX: use a special url_shutdown call to abort parse cleanly */
1026     is->abort_request = 1;
1027     SDL_WaitThread(is->read_tid, NULL);
1028     packet_queue_destroy(&is->videoq);
1029     packet_queue_destroy(&is->audioq);
1030     packet_queue_destroy(&is->subtitleq);
1031
1032     /* free all pictures */
1033     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
1034         free_picture(&is->pictq[i]);
1035     for (i = 0; i < SUBPICTURE_QUEUE_SIZE; i++)
1036         free_subpicture(&is->subpq[i]);
1037     SDL_DestroyMutex(is->pictq_mutex);
1038     SDL_DestroyCond(is->pictq_cond);
1039     SDL_DestroyMutex(is->subpq_mutex);
1040     SDL_DestroyCond(is->subpq_cond);
1041     SDL_DestroyCond(is->continue_read_thread);
1042 #if !CONFIG_AVFILTER
1043     sws_freeContext(is->img_convert_ctx);
1044 #endif
1045     av_free(is);
1046 }
1047
1048 static void do_exit(VideoState *is)
1049 {
1050     if (is) {
1051         stream_close(is);
1052     }
1053     av_lockmgr_register(NULL);
1054     uninit_opts();
1055 #if CONFIG_AVFILTER
1056     av_freep(&vfilters);
1057 #endif
1058     avformat_network_deinit();
1059     if (show_status)
1060         printf("\n");
1061     SDL_Quit();
1062     av_log(NULL, AV_LOG_QUIET, "%s", "");
1063     exit(0);
1064 }
1065
1066 static void sigterm_handler(int sig)
1067 {
1068     exit(123);
1069 }
1070
1071 static int video_open(VideoState *is, int force_set_video_mode, VideoPicture *vp)
1072 {
1073     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
1074     int w,h;
1075     SDL_Rect rect;
1076
1077     if (is_full_screen) flags |= SDL_FULLSCREEN;
1078     else                flags |= SDL_RESIZABLE;
1079
1080     if (vp && vp->width) {
1081         calculate_display_rect(&rect, 0, 0, INT_MAX, vp->height, vp);
1082         default_width  = rect.w;
1083         default_height = rect.h;
1084     }
1085
1086     if (is_full_screen && fs_screen_width) {
1087         w = fs_screen_width;
1088         h = fs_screen_height;
1089     } else if (!is_full_screen && screen_width) {
1090         w = screen_width;
1091         h = screen_height;
1092     } else {
1093         w = default_width;
1094         h = default_height;
1095     }
1096     w = FFMIN(16383, w);
1097     if (screen && is->width == screen->w && screen->w == w
1098        && is->height== screen->h && screen->h == h && !force_set_video_mode)
1099         return 0;
1100     screen = SDL_SetVideoMode(w, h, 0, flags);
1101     if (!screen) {
1102         av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
1103         do_exit(is);
1104     }
1105     if (!window_title)
1106         window_title = input_filename;
1107     SDL_WM_SetCaption(window_title, window_title);
1108
1109     is->width  = screen->w;
1110     is->height = screen->h;
1111
1112     return 0;
1113 }
1114
1115 /* display the current picture, if any */
1116 static void video_display(VideoState *is)
1117 {
1118     if (!screen)
1119         video_open(is, 0, NULL);
1120     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1121         video_audio_display(is);
1122     else if (is->video_st)
1123         video_image_display(is);
1124 }
1125
1126 static double get_clock(Clock *c)
1127 {
1128     if (*c->queue_serial != c->serial)
1129         return NAN;
1130     if (c->paused) {
1131         return c->pts;
1132     } else {
1133         double time = av_gettime() / 1000000.0;
1134         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1135     }
1136 }
1137
1138 static void set_clock_at(Clock *c, double pts, int serial, double time)
1139 {
1140     c->pts = pts;
1141     c->last_updated = time;
1142     c->pts_drift = c->pts - time;
1143     c->serial = serial;
1144 }
1145
1146 static void set_clock(Clock *c, double pts, int serial)
1147 {
1148     double time = av_gettime() / 1000000.0;
1149     set_clock_at(c, pts, serial, time);
1150 }
1151
1152 static void set_clock_speed(Clock *c, double speed)
1153 {
1154     set_clock(c, get_clock(c), c->serial);
1155     c->speed = speed;
1156 }
1157
1158 static void init_clock(Clock *c, int *queue_serial)
1159 {
1160     c->speed = 1.0;
1161     c->paused = 0;
1162     c->queue_serial = queue_serial;
1163     set_clock(c, NAN, -1);
1164 }
1165
1166 static void sync_clock_to_slave(Clock *c, Clock *slave)
1167 {
1168     double clock = get_clock(c);
1169     double slave_clock = get_clock(slave);
1170     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1171         set_clock(c, slave_clock, slave->serial);
1172 }
1173
1174 static int get_master_sync_type(VideoState *is) {
1175     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1176         if (is->video_st)
1177             return AV_SYNC_VIDEO_MASTER;
1178         else
1179             return AV_SYNC_AUDIO_MASTER;
1180     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1181         if (is->audio_st)
1182             return AV_SYNC_AUDIO_MASTER;
1183         else
1184             return AV_SYNC_EXTERNAL_CLOCK;
1185     } else {
1186         return AV_SYNC_EXTERNAL_CLOCK;
1187     }
1188 }
1189
1190 /* get the current master clock value */
1191 static double get_master_clock(VideoState *is)
1192 {
1193     double val;
1194
1195     switch (get_master_sync_type(is)) {
1196         case AV_SYNC_VIDEO_MASTER:
1197             val = get_clock(&is->vidclk);
1198             break;
1199         case AV_SYNC_AUDIO_MASTER:
1200             val = get_clock(&is->audclk);
1201             break;
1202         default:
1203             val = get_clock(&is->extclk);
1204             break;
1205     }
1206     return val;
1207 }
1208
1209 static void check_external_clock_speed(VideoState *is) {
1210    if (is->video_stream >= 0 && is->videoq.nb_packets <= MIN_FRAMES / 2 ||
1211        is->audio_stream >= 0 && is->audioq.nb_packets <= MIN_FRAMES / 2) {
1212        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1213    } else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
1214               (is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
1215        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1216    } else {
1217        double speed = is->extclk.speed;
1218        if (speed != 1.0)
1219            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1220    }
1221 }
1222
1223 /* seek in the stream */
1224 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1225 {
1226     if (!is->seek_req) {
1227         is->seek_pos = pos;
1228         is->seek_rel = rel;
1229         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1230         if (seek_by_bytes)
1231             is->seek_flags |= AVSEEK_FLAG_BYTE;
1232         is->seek_req = 1;
1233         SDL_CondSignal(is->continue_read_thread);
1234     }
1235 }
1236
1237 /* pause or resume the video */
1238 static void stream_toggle_pause(VideoState *is)
1239 {
1240     if (is->paused) {
1241         is->frame_timer += av_gettime() / 1000000.0 + is->vidclk.pts_drift - is->vidclk.pts;
1242         if (is->read_pause_return != AVERROR(ENOSYS)) {
1243             is->vidclk.paused = 0;
1244         }
1245         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1246     }
1247     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1248     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1249 }
1250
1251 static void toggle_pause(VideoState *is)
1252 {
1253     stream_toggle_pause(is);
1254     is->step = 0;
1255 }
1256
1257 static void step_to_next_frame(VideoState *is)
1258 {
1259     /* if the stream is paused unpause it, then step */
1260     if (is->paused)
1261         stream_toggle_pause(is);
1262     is->step = 1;
1263 }
1264
1265 static double compute_target_delay(double delay, VideoState *is)
1266 {
1267     double sync_threshold, diff;
1268
1269     /* update delay to follow master synchronisation source */
1270     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1271         /* if video is slave, we try to correct big delays by
1272            duplicating or deleting a frame */
1273         diff = get_clock(&is->vidclk) - get_master_clock(is);
1274
1275         /* skip or repeat frame. We take into account the
1276            delay to compute the threshold. I still don't know
1277            if it is the best guess */
1278         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1279         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1280             if (diff <= -sync_threshold)
1281                 delay = FFMAX(0, delay + diff);
1282             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1283                 delay = delay + diff;
1284             else if (diff >= sync_threshold)
1285                 delay = 2 * delay;
1286         }
1287     }
1288
1289     av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
1290             delay, -diff);
1291
1292     return delay;
1293 }
1294
1295 static void pictq_next_picture(VideoState *is) {
1296     /* update queue size and signal for next picture */
1297     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1298         is->pictq_rindex = 0;
1299
1300     SDL_LockMutex(is->pictq_mutex);
1301     is->pictq_size--;
1302     SDL_CondSignal(is->pictq_cond);
1303     SDL_UnlockMutex(is->pictq_mutex);
1304 }
1305
1306 static int pictq_prev_picture(VideoState *is) {
1307     VideoPicture *prevvp;
1308     int ret = 0;
1309     /* update queue size and signal for the previous picture */
1310     prevvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
1311     if (prevvp->allocated && prevvp->serial == is->videoq.serial) {
1312         SDL_LockMutex(is->pictq_mutex);
1313         if (is->pictq_size < VIDEO_PICTURE_QUEUE_SIZE) {
1314             if (--is->pictq_rindex == -1)
1315                 is->pictq_rindex = VIDEO_PICTURE_QUEUE_SIZE - 1;
1316             is->pictq_size++;
1317             ret = 1;
1318         }
1319         SDL_CondSignal(is->pictq_cond);
1320         SDL_UnlockMutex(is->pictq_mutex);
1321     }
1322     return ret;
1323 }
1324
1325 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1326     /* update current video pts */
1327     set_clock(&is->vidclk, pts, serial);
1328     sync_clock_to_slave(&is->extclk, &is->vidclk);
1329     is->video_current_pos = pos;
1330     is->frame_last_pts = pts;
1331 }
1332
1333 /* called to display each frame */
1334 static void video_refresh(void *opaque, double *remaining_time)
1335 {
1336     VideoState *is = opaque;
1337     VideoPicture *vp;
1338     double time;
1339
1340     SubPicture *sp, *sp2;
1341
1342     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1343         check_external_clock_speed(is);
1344
1345     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1346         time = av_gettime() / 1000000.0;
1347         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1348             video_display(is);
1349             is->last_vis_time = time;
1350         }
1351         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1352     }
1353
1354     if (is->video_st) {
1355         int redisplay = 0;
1356         if (is->force_refresh)
1357             redisplay = pictq_prev_picture(is);
1358 retry:
1359         if (is->pictq_size == 0) {
1360             SDL_LockMutex(is->pictq_mutex);
1361             if (is->frame_last_dropped_pts != AV_NOPTS_VALUE && is->frame_last_dropped_pts > is->frame_last_pts) {
1362                 update_video_pts(is, is->frame_last_dropped_pts, is->frame_last_dropped_pos, is->frame_last_dropped_serial);
1363                 is->frame_last_dropped_pts = AV_NOPTS_VALUE;
1364             }
1365             SDL_UnlockMutex(is->pictq_mutex);
1366             // nothing to do, no picture to display in the queue
1367         } else {
1368             double last_duration, duration, delay;
1369             /* dequeue the picture */
1370             vp = &is->pictq[is->pictq_rindex];
1371
1372             if (vp->serial != is->videoq.serial) {
1373                 pictq_next_picture(is);
1374                 redisplay = 0;
1375                 goto retry;
1376             }
1377
1378             if (is->paused)
1379                 goto display;
1380
1381             /* compute nominal last_duration */
1382             last_duration = vp->pts - is->frame_last_pts;
1383             if (!isnan(last_duration) && last_duration > 0 && last_duration < is->max_frame_duration) {
1384                 /* if duration of the last frame was sane, update last_duration in video state */
1385                 is->frame_last_duration = last_duration;
1386             }
1387             if (redisplay)
1388                 delay = 0.0;
1389             else
1390                 delay = compute_target_delay(is->frame_last_duration, is);
1391
1392             time= av_gettime()/1000000.0;
1393             if (time < is->frame_timer + delay && !redisplay) {
1394                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1395                 return;
1396             }
1397
1398             is->frame_timer += delay;
1399             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1400                 is->frame_timer = time;
1401
1402             SDL_LockMutex(is->pictq_mutex);
1403             if (!redisplay && !isnan(vp->pts))
1404                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1405             SDL_UnlockMutex(is->pictq_mutex);
1406
1407             if (is->pictq_size > 1) {
1408                 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1409                 duration = nextvp->pts - vp->pts;
1410                 if(!is->step && (redisplay || framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1411                     if (!redisplay)
1412                         is->frame_drops_late++;
1413                     pictq_next_picture(is);
1414                     redisplay = 0;
1415                     goto retry;
1416                 }
1417             }
1418
1419             if (is->subtitle_st) {
1420                     while (is->subpq_size > 0) {
1421                         sp = &is->subpq[is->subpq_rindex];
1422
1423                         if (is->subpq_size > 1)
1424                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1425                         else
1426                             sp2 = NULL;
1427
1428                         if (sp->serial != is->subtitleq.serial
1429                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1430                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1431                         {
1432                             free_subpicture(sp);
1433
1434                             /* update queue size and signal for next picture */
1435                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1436                                 is->subpq_rindex = 0;
1437
1438                             SDL_LockMutex(is->subpq_mutex);
1439                             is->subpq_size--;
1440                             SDL_CondSignal(is->subpq_cond);
1441                             SDL_UnlockMutex(is->subpq_mutex);
1442                         } else {
1443                             break;
1444                         }
1445                     }
1446             }
1447
1448 display:
1449             /* display picture */
1450             if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
1451                 video_display(is);
1452
1453             pictq_next_picture(is);
1454
1455             if (is->step && !is->paused)
1456                 stream_toggle_pause(is);
1457         }
1458     }
1459     is->force_refresh = 0;
1460     if (show_status) {
1461         static int64_t last_time;
1462         int64_t cur_time;
1463         int aqsize, vqsize, sqsize;
1464         double av_diff;
1465
1466         cur_time = av_gettime();
1467         if (!last_time || (cur_time - last_time) >= 30000) {
1468             aqsize = 0;
1469             vqsize = 0;
1470             sqsize = 0;
1471             if (is->audio_st)
1472                 aqsize = is->audioq.size;
1473             if (is->video_st)
1474                 vqsize = is->videoq.size;
1475             if (is->subtitle_st)
1476                 sqsize = is->subtitleq.size;
1477             av_diff = 0;
1478             if (is->audio_st && is->video_st)
1479                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1480             else if (is->video_st)
1481                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1482             else if (is->audio_st)
1483                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1484             av_log(NULL, AV_LOG_INFO,
1485                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1486                    get_master_clock(is),
1487                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1488                    av_diff,
1489                    is->frame_drops_early + is->frame_drops_late,
1490                    aqsize / 1024,
1491                    vqsize / 1024,
1492                    sqsize,
1493                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1494                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1495             fflush(stdout);
1496             last_time = cur_time;
1497         }
1498     }
1499 }
1500
1501 /* allocate a picture (needs to do that in main thread to avoid
1502    potential locking problems */
1503 static void alloc_picture(VideoState *is)
1504 {
1505     VideoPicture *vp;
1506     int64_t bufferdiff;
1507
1508     vp = &is->pictq[is->pictq_windex];
1509
1510     free_picture(vp);
1511
1512     video_open(is, 0, vp);
1513
1514     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1515                                    SDL_YV12_OVERLAY,
1516                                    screen);
1517     bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
1518     if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
1519         /* SDL allocates a buffer smaller than requested if the video
1520          * overlay hardware is unable to support the requested size. */
1521         av_log(NULL, AV_LOG_FATAL,
1522                "Error: the video system does not support an image\n"
1523                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1524                         "to reduce the image size.\n", vp->width, vp->height );
1525         do_exit(is);
1526     }
1527
1528     SDL_LockMutex(is->pictq_mutex);
1529     vp->allocated = 1;
1530     SDL_CondSignal(is->pictq_cond);
1531     SDL_UnlockMutex(is->pictq_mutex);
1532 }
1533
1534 static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
1535     int i, width, height;
1536     Uint8 *p, *maxp;
1537     for (i = 0; i < 3; i++) {
1538         width  = bmp->w;
1539         height = bmp->h;
1540         if (i > 0) {
1541             width  >>= 1;
1542             height >>= 1;
1543         }
1544         if (bmp->pitches[i] > width) {
1545             maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
1546             for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
1547                 *(p+1) = *p;
1548         }
1549     }
1550 }
1551
1552 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos, int serial)
1553 {
1554     VideoPicture *vp;
1555
1556 #if defined(DEBUG_SYNC) && 0
1557     printf("frame_type=%c pts=%0.3f\n",
1558            av_get_picture_type_char(src_frame->pict_type), pts);
1559 #endif
1560
1561     /* wait until we have space to put a new picture */
1562     SDL_LockMutex(is->pictq_mutex);
1563
1564     /* keep the last already displayed picture in the queue */
1565     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE - 1 &&
1566            !is->videoq.abort_request) {
1567         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1568     }
1569     SDL_UnlockMutex(is->pictq_mutex);
1570
1571     if (is->videoq.abort_request)
1572         return -1;
1573
1574     vp = &is->pictq[is->pictq_windex];
1575
1576     vp->sar = src_frame->sample_aspect_ratio;
1577
1578     /* alloc or resize hardware picture buffer */
1579     if (!vp->bmp || vp->reallocate || !vp->allocated ||
1580         vp->width  != src_frame->width ||
1581         vp->height != src_frame->height) {
1582         SDL_Event event;
1583
1584         vp->allocated  = 0;
1585         vp->reallocate = 0;
1586         vp->width = src_frame->width;
1587         vp->height = src_frame->height;
1588
1589         /* the allocation must be done in the main thread to avoid
1590            locking problems. */
1591         event.type = FF_ALLOC_EVENT;
1592         event.user.data1 = is;
1593         SDL_PushEvent(&event);
1594
1595         /* wait until the picture is allocated */
1596         SDL_LockMutex(is->pictq_mutex);
1597         while (!vp->allocated && !is->videoq.abort_request) {
1598             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1599         }
1600         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1601         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1602             while (!vp->allocated) {
1603                 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1604             }
1605         }
1606         SDL_UnlockMutex(is->pictq_mutex);
1607
1608         if (is->videoq.abort_request)
1609             return -1;
1610     }
1611
1612     /* if the frame is not skipped, then display it */
1613     if (vp->bmp) {
1614         AVPicture pict = { { 0 } };
1615
1616         /* get a pointer on the bitmap */
1617         SDL_LockYUVOverlay (vp->bmp);
1618
1619         pict.data[0] = vp->bmp->pixels[0];
1620         pict.data[1] = vp->bmp->pixels[2];
1621         pict.data[2] = vp->bmp->pixels[1];
1622
1623         pict.linesize[0] = vp->bmp->pitches[0];
1624         pict.linesize[1] = vp->bmp->pitches[2];
1625         pict.linesize[2] = vp->bmp->pitches[1];
1626
1627 #if CONFIG_AVFILTER
1628         // FIXME use direct rendering
1629         av_picture_copy(&pict, (AVPicture *)src_frame,
1630                         src_frame->format, vp->width, vp->height);
1631 #else
1632         av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1633         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1634             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1635             AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1636         if (is->img_convert_ctx == NULL) {
1637             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1638             exit(1);
1639         }
1640         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1641                   0, vp->height, pict.data, pict.linesize);
1642 #endif
1643         /* workaround SDL PITCH_WORKAROUND */
1644         duplicate_right_border_pixels(vp->bmp);
1645         /* update the bitmap content */
1646         SDL_UnlockYUVOverlay(vp->bmp);
1647
1648         vp->pts = pts;
1649         vp->pos = pos;
1650         vp->serial = serial;
1651
1652         /* now we can update the picture count */
1653         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1654             is->pictq_windex = 0;
1655         SDL_LockMutex(is->pictq_mutex);
1656         is->pictq_size++;
1657         SDL_UnlockMutex(is->pictq_mutex);
1658     }
1659     return 0;
1660 }
1661
1662 static int get_video_frame(VideoState *is, AVFrame *frame, AVPacket *pkt, int *serial)
1663 {
1664     int got_picture;
1665
1666     if (packet_queue_get(&is->videoq, pkt, 1, serial) < 0)
1667         return -1;
1668
1669     if (pkt->data == flush_pkt.data) {
1670         avcodec_flush_buffers(is->video_st->codec);
1671
1672         SDL_LockMutex(is->pictq_mutex);
1673         // Make sure there are no long delay timers (ideally we should just flush the queue but that's harder)
1674         while (is->pictq_size && !is->videoq.abort_request) {
1675             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1676         }
1677         is->video_current_pos = -1;
1678         is->frame_last_pts = AV_NOPTS_VALUE;
1679         is->frame_last_duration = 0;
1680         is->frame_timer = (double)av_gettime() / 1000000.0;
1681         is->frame_last_dropped_pts = AV_NOPTS_VALUE;
1682         SDL_UnlockMutex(is->pictq_mutex);
1683         return 0;
1684     }
1685
1686     if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0)
1687         return 0;
1688
1689     if (!got_picture && !pkt->data)
1690         is->video_finished = *serial;
1691
1692     if (got_picture) {
1693         int ret = 1;
1694         double dpts = NAN;
1695
1696         if (decoder_reorder_pts == -1) {
1697             frame->pts = av_frame_get_best_effort_timestamp(frame);
1698         } else if (decoder_reorder_pts) {
1699             frame->pts = frame->pkt_pts;
1700         } else {
1701             frame->pts = frame->pkt_dts;
1702         }
1703
1704         if (frame->pts != AV_NOPTS_VALUE)
1705             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1706
1707         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1708
1709         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1710             SDL_LockMutex(is->pictq_mutex);
1711             if (is->frame_last_pts != AV_NOPTS_VALUE && frame->pts != AV_NOPTS_VALUE) {
1712                 double clockdiff = get_clock(&is->vidclk) - get_master_clock(is);
1713                 double ptsdiff = dpts - is->frame_last_pts;
1714                 if (!isnan(clockdiff) && fabs(clockdiff) < AV_NOSYNC_THRESHOLD &&
1715                     !isnan(ptsdiff) && ptsdiff > 0 && ptsdiff < AV_NOSYNC_THRESHOLD &&
1716                     clockdiff + ptsdiff - is->frame_last_filter_delay < 0 &&
1717                     is->videoq.nb_packets) {
1718                     is->frame_last_dropped_pos = pkt->pos;
1719                     is->frame_last_dropped_pts = dpts;
1720                     is->frame_last_dropped_serial = *serial;
1721                     is->frame_drops_early++;
1722                     av_frame_unref(frame);
1723                     ret = 0;
1724                 }
1725             }
1726             SDL_UnlockMutex(is->pictq_mutex);
1727         }
1728
1729         return ret;
1730     }
1731     return 0;
1732 }
1733
1734 #if CONFIG_AVFILTER
1735 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1736                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1737 {
1738     int ret;
1739     AVFilterInOut *outputs = NULL, *inputs = NULL;
1740
1741     if (filtergraph) {
1742         outputs = avfilter_inout_alloc();
1743         inputs  = avfilter_inout_alloc();
1744         if (!outputs || !inputs) {
1745             ret = AVERROR(ENOMEM);
1746             goto fail;
1747         }
1748
1749         outputs->name       = av_strdup("in");
1750         outputs->filter_ctx = source_ctx;
1751         outputs->pad_idx    = 0;
1752         outputs->next       = NULL;
1753
1754         inputs->name        = av_strdup("out");
1755         inputs->filter_ctx  = sink_ctx;
1756         inputs->pad_idx     = 0;
1757         inputs->next        = NULL;
1758
1759         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1760             goto fail;
1761     } else {
1762         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1763             goto fail;
1764     }
1765
1766     ret = avfilter_graph_config(graph, NULL);
1767 fail:
1768     avfilter_inout_free(&outputs);
1769     avfilter_inout_free(&inputs);
1770     return ret;
1771 }
1772
1773 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1774 {
1775     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
1776     char sws_flags_str[128];
1777     char buffersrc_args[256];
1778     int ret;
1779     AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_crop;
1780     AVCodecContext *codec = is->video_st->codec;
1781     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1782
1783     av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1784     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1785     graph->scale_sws_opts = av_strdup(sws_flags_str);
1786
1787     snprintf(buffersrc_args, sizeof(buffersrc_args),
1788              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1789              frame->width, frame->height, frame->format,
1790              is->video_st->time_base.num, is->video_st->time_base.den,
1791              codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
1792     if (fr.num && fr.den)
1793         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1794
1795     if ((ret = avfilter_graph_create_filter(&filt_src,
1796                                             avfilter_get_by_name("buffer"),
1797                                             "ffplay_buffer", buffersrc_args, NULL,
1798                                             graph)) < 0)
1799         goto fail;
1800
1801     ret = avfilter_graph_create_filter(&filt_out,
1802                                        avfilter_get_by_name("buffersink"),
1803                                        "ffplay_buffersink", NULL, NULL, graph);
1804     if (ret < 0)
1805         goto fail;
1806
1807     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1808         goto fail;
1809
1810     /* SDL YUV code is not handling odd width/height for some driver
1811      * combinations, therefore we crop the picture to an even width/height. */
1812     if ((ret = avfilter_graph_create_filter(&filt_crop,
1813                                             avfilter_get_by_name("crop"),
1814                                             "ffplay_crop", "floor(in_w/2)*2:floor(in_h/2)*2", NULL, graph)) < 0)
1815         goto fail;
1816     if ((ret = avfilter_link(filt_crop, 0, filt_out, 0)) < 0)
1817         goto fail;
1818
1819     if ((ret = configure_filtergraph(graph, vfilters, filt_src, filt_crop)) < 0)
1820         goto fail;
1821
1822     is->in_video_filter  = filt_src;
1823     is->out_video_filter = filt_out;
1824
1825 fail:
1826     return ret;
1827 }
1828
1829 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
1830 {
1831     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
1832     int sample_rates[2] = { 0, -1 };
1833     int64_t channel_layouts[2] = { 0, -1 };
1834     int channels[2] = { 0, -1 };
1835     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
1836     char asrc_args[256];
1837     int ret;
1838
1839     avfilter_graph_free(&is->agraph);
1840     if (!(is->agraph = avfilter_graph_alloc()))
1841         return AVERROR(ENOMEM);
1842
1843     ret = snprintf(asrc_args, sizeof(asrc_args),
1844                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
1845                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
1846                    is->audio_filter_src.channels,
1847                    1, is->audio_filter_src.freq);
1848     if (is->audio_filter_src.channel_layout)
1849         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
1850                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
1851
1852     ret = avfilter_graph_create_filter(&filt_asrc,
1853                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
1854                                        asrc_args, NULL, is->agraph);
1855     if (ret < 0)
1856         goto end;
1857
1858
1859     ret = avfilter_graph_create_filter(&filt_asink,
1860                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
1861                                        NULL, NULL, is->agraph);
1862     if (ret < 0)
1863         goto end;
1864
1865     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1866         goto end;
1867     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
1868         goto end;
1869
1870     if (force_output_format) {
1871         channel_layouts[0] = is->audio_tgt.channel_layout;
1872         channels       [0] = is->audio_tgt.channels;
1873         sample_rates   [0] = is->audio_tgt.freq;
1874         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
1875             goto end;
1876         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1877             goto end;
1878         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1879             goto end;
1880         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1881             goto end;
1882     }
1883
1884
1885     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
1886         goto end;
1887
1888     is->in_audio_filter  = filt_asrc;
1889     is->out_audio_filter = filt_asink;
1890
1891 end:
1892     if (ret < 0)
1893         avfilter_graph_free(&is->agraph);
1894     return ret;
1895 }
1896 #endif  /* CONFIG_AVFILTER */
1897
1898 static int video_thread(void *arg)
1899 {
1900     AVPacket pkt = { 0 };
1901     VideoState *is = arg;
1902     AVFrame *frame = av_frame_alloc();
1903     double pts;
1904     int ret;
1905     int serial = 0;
1906
1907 #if CONFIG_AVFILTER
1908     AVFilterGraph *graph = avfilter_graph_alloc();
1909     AVFilterContext *filt_out = NULL, *filt_in = NULL;
1910     int last_w = 0;
1911     int last_h = 0;
1912     enum AVPixelFormat last_format = -2;
1913     int last_serial = -1;
1914 #endif
1915
1916     for (;;) {
1917         while (is->paused && !is->videoq.abort_request)
1918             SDL_Delay(10);
1919
1920         avcodec_get_frame_defaults(frame);
1921         av_free_packet(&pkt);
1922
1923         ret = get_video_frame(is, frame, &pkt, &serial);
1924         if (ret < 0)
1925             goto the_end;
1926         if (!ret)
1927             continue;
1928
1929 #if CONFIG_AVFILTER
1930         if (   last_w != frame->width
1931             || last_h != frame->height
1932             || last_format != frame->format
1933             || last_serial != serial) {
1934             av_log(NULL, AV_LOG_DEBUG,
1935                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
1936                    last_w, last_h,
1937                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
1938                    frame->width, frame->height,
1939                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), serial);
1940             avfilter_graph_free(&graph);
1941             graph = avfilter_graph_alloc();
1942             if ((ret = configure_video_filters(graph, is, vfilters, frame)) < 0) {
1943                 SDL_Event event;
1944                 event.type = FF_QUIT_EVENT;
1945                 event.user.data1 = is;
1946                 SDL_PushEvent(&event);
1947                 av_free_packet(&pkt);
1948                 goto the_end;
1949             }
1950             filt_in  = is->in_video_filter;
1951             filt_out = is->out_video_filter;
1952             last_w = frame->width;
1953             last_h = frame->height;
1954             last_format = frame->format;
1955             last_serial = serial;
1956         }
1957
1958         ret = av_buffersrc_add_frame(filt_in, frame);
1959         if (ret < 0)
1960             goto the_end;
1961         av_frame_unref(frame);
1962         avcodec_get_frame_defaults(frame);
1963         av_free_packet(&pkt);
1964
1965         while (ret >= 0) {
1966             is->frame_last_returned_time = av_gettime() / 1000000.0;
1967
1968             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
1969             if (ret < 0) {
1970                 if (ret == AVERROR_EOF)
1971                     is->video_finished = serial;
1972                 ret = 0;
1973                 break;
1974             }
1975
1976             is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time;
1977             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
1978                 is->frame_last_filter_delay = 0;
1979
1980             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(filt_out->inputs[0]->time_base);
1981             ret = queue_picture(is, frame, pts, av_frame_get_pkt_pos(frame), serial);
1982             av_frame_unref(frame);
1983         }
1984 #else
1985         pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(is->video_st->time_base);
1986         ret = queue_picture(is, frame, pts, pkt.pos, serial);
1987         av_frame_unref(frame);
1988 #endif
1989
1990         if (ret < 0)
1991             goto the_end;
1992     }
1993  the_end:
1994     avcodec_flush_buffers(is->video_st->codec);
1995 #if CONFIG_AVFILTER
1996     avfilter_graph_free(&graph);
1997 #endif
1998     av_free_packet(&pkt);
1999     av_frame_free(&frame);
2000     return 0;
2001 }
2002
2003 static int subtitle_thread(void *arg)
2004 {
2005     VideoState *is = arg;
2006     SubPicture *sp;
2007     AVPacket pkt1, *pkt = &pkt1;
2008     int got_subtitle;
2009     int serial;
2010     double pts;
2011     int i, j;
2012     int r, g, b, y, u, v, a;
2013
2014     for (;;) {
2015         while (is->paused && !is->subtitleq.abort_request) {
2016             SDL_Delay(10);
2017         }
2018         if (packet_queue_get(&is->subtitleq, pkt, 1, &serial) < 0)
2019             break;
2020
2021         if (pkt->data == flush_pkt.data) {
2022             avcodec_flush_buffers(is->subtitle_st->codec);
2023             continue;
2024         }
2025         SDL_LockMutex(is->subpq_mutex);
2026         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
2027                !is->subtitleq.abort_request) {
2028             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
2029         }
2030         SDL_UnlockMutex(is->subpq_mutex);
2031
2032         if (is->subtitleq.abort_request)
2033             return 0;
2034
2035         sp = &is->subpq[is->subpq_windex];
2036
2037        /* NOTE: ipts is the PTS of the _first_ picture beginning in
2038            this packet, if any */
2039         pts = 0;
2040         if (pkt->pts != AV_NOPTS_VALUE)
2041             pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
2042
2043         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
2044                                  &got_subtitle, pkt);
2045         if (got_subtitle && sp->sub.format == 0) {
2046             if (sp->sub.pts != AV_NOPTS_VALUE)
2047                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2048             sp->pts = pts;
2049             sp->serial = serial;
2050
2051             for (i = 0; i < sp->sub.num_rects; i++)
2052             {
2053                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
2054                 {
2055                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
2056                     y = RGB_TO_Y_CCIR(r, g, b);
2057                     u = RGB_TO_U_CCIR(r, g, b, 0);
2058                     v = RGB_TO_V_CCIR(r, g, b, 0);
2059                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
2060                 }
2061             }
2062
2063             /* now we can update the picture count */
2064             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
2065                 is->subpq_windex = 0;
2066             SDL_LockMutex(is->subpq_mutex);
2067             is->subpq_size++;
2068             SDL_UnlockMutex(is->subpq_mutex);
2069         } else if (got_subtitle) {
2070             avsubtitle_free(&sp->sub);
2071         }
2072         av_free_packet(pkt);
2073     }
2074     return 0;
2075 }
2076
2077 /* copy samples for viewing in editor window */
2078 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2079 {
2080     int size, len;
2081
2082     size = samples_size / sizeof(short);
2083     while (size > 0) {
2084         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2085         if (len > size)
2086             len = size;
2087         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2088         samples += len;
2089         is->sample_array_index += len;
2090         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2091             is->sample_array_index = 0;
2092         size -= len;
2093     }
2094 }
2095
2096 /* return the wanted number of samples to get better sync if sync_type is video
2097  * or external master clock */
2098 static int synchronize_audio(VideoState *is, int nb_samples)
2099 {
2100     int wanted_nb_samples = nb_samples;
2101
2102     /* if not master, then we try to remove or add samples to correct the clock */
2103     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2104         double diff, avg_diff;
2105         int min_nb_samples, max_nb_samples;
2106
2107         diff = get_clock(&is->audclk) - get_master_clock(is);
2108
2109         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2110             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2111             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2112                 /* not enough measures to have a correct estimate */
2113                 is->audio_diff_avg_count++;
2114             } else {
2115                 /* estimate the A-V difference */
2116                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2117
2118                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2119                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2120                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2121                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2122                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
2123                 }
2124                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2125                         diff, avg_diff, wanted_nb_samples - nb_samples,
2126                         is->audio_clock, is->audio_diff_threshold);
2127             }
2128         } else {
2129             /* too big difference : may be initial PTS errors, so
2130                reset A-V filter */
2131             is->audio_diff_avg_count = 0;
2132             is->audio_diff_cum       = 0;
2133         }
2134     }
2135
2136     return wanted_nb_samples;
2137 }
2138
2139 /**
2140  * Decode one audio frame and return its uncompressed size.
2141  *
2142  * The processed audio frame is decoded, converted if required, and
2143  * stored in is->audio_buf, with size in bytes given by the return
2144  * value.
2145  */
2146 static int audio_decode_frame(VideoState *is)
2147 {
2148     AVPacket *pkt_temp = &is->audio_pkt_temp;
2149     AVPacket *pkt = &is->audio_pkt;
2150     AVCodecContext *dec = is->audio_st->codec;
2151     int len1, data_size, resampled_data_size;
2152     int64_t dec_channel_layout;
2153     int got_frame;
2154     av_unused double audio_clock0;
2155     int wanted_nb_samples;
2156     AVRational tb;
2157     int ret;
2158     int reconfigure;
2159
2160     for (;;) {
2161         /* NOTE: the audio packet can contain several frames */
2162         while (pkt_temp->stream_index != -1 || is->audio_buf_frames_pending) {
2163             if (!is->frame) {
2164                 if (!(is->frame = avcodec_alloc_frame()))
2165                     return AVERROR(ENOMEM);
2166             } else {
2167                 av_frame_unref(is->frame);
2168                 avcodec_get_frame_defaults(is->frame);
2169             }
2170
2171             if (is->audioq.serial != is->audio_pkt_temp_serial)
2172                 break;
2173
2174             if (is->paused)
2175                 return -1;
2176
2177             if (!is->audio_buf_frames_pending) {
2178                 len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
2179                 if (len1 < 0) {
2180                     /* if error, we skip the frame */
2181                     pkt_temp->size = 0;
2182                     break;
2183                 }
2184
2185                 pkt_temp->dts =
2186                 pkt_temp->pts = AV_NOPTS_VALUE;
2187                 pkt_temp->data += len1;
2188                 pkt_temp->size -= len1;
2189                 if (pkt_temp->data && pkt_temp->size <= 0 || !pkt_temp->data && !got_frame)
2190                     pkt_temp->stream_index = -1;
2191                 if (!pkt_temp->data && !got_frame)
2192                     is->audio_finished = is->audio_pkt_temp_serial;
2193
2194                 if (!got_frame)
2195                     continue;
2196
2197                 tb = (AVRational){1, is->frame->sample_rate};
2198                 if (is->frame->pts != AV_NOPTS_VALUE)
2199                     is->frame->pts = av_rescale_q(is->frame->pts, dec->time_base, tb);
2200                 else if (is->frame->pkt_pts != AV_NOPTS_VALUE)
2201                     is->frame->pts = av_rescale_q(is->frame->pkt_pts, is->audio_st->time_base, tb);
2202                 else if (is->audio_frame_next_pts != AV_NOPTS_VALUE)
2203 #if CONFIG_AVFILTER
2204                     is->frame->pts = av_rescale_q(is->audio_frame_next_pts, (AVRational){1, is->audio_filter_src.freq}, tb);
2205 #else
2206                     is->frame->pts = av_rescale_q(is->audio_frame_next_pts, (AVRational){1, is->audio_src.freq}, tb);
2207 #endif
2208
2209                 if (is->frame->pts != AV_NOPTS_VALUE)
2210                     is->audio_frame_next_pts = is->frame->pts + is->frame->nb_samples;
2211
2212 #if CONFIG_AVFILTER
2213                 dec_channel_layout = get_valid_channel_layout(is->frame->channel_layout, av_frame_get_channels(is->frame));
2214
2215                 reconfigure =
2216                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2217                                    is->frame->format, av_frame_get_channels(is->frame))    ||
2218                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2219                     is->audio_filter_src.freq           != is->frame->sample_rate ||
2220                     is->audio_pkt_temp_serial           != is->audio_last_serial;
2221
2222                 if (reconfigure) {
2223                     char buf1[1024], buf2[1024];
2224                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2225                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2226                     av_log(NULL, AV_LOG_DEBUG,
2227                            "Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
2228                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, is->audio_last_serial,
2229                            is->frame->sample_rate, av_frame_get_channels(is->frame), av_get_sample_fmt_name(is->frame->format), buf2, is->audio_pkt_temp_serial);
2230
2231                     is->audio_filter_src.fmt            = is->frame->format;
2232                     is->audio_filter_src.channels       = av_frame_get_channels(is->frame);
2233                     is->audio_filter_src.channel_layout = dec_channel_layout;
2234                     is->audio_filter_src.freq           = is->frame->sample_rate;
2235                     is->audio_last_serial               = is->audio_pkt_temp_serial;
2236
2237                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2238                         return ret;
2239                 }
2240
2241                 if ((ret = av_buffersrc_add_frame(is->in_audio_filter, is->frame)) < 0)
2242                     return ret;
2243                 av_frame_unref(is->frame);
2244 #endif
2245             }
2246 #if CONFIG_AVFILTER
2247             if ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, is->frame, 0)) < 0) {
2248                 if (ret == AVERROR(EAGAIN)) {
2249                     is->audio_buf_frames_pending = 0;
2250                     continue;
2251                 }
2252                 if (ret == AVERROR_EOF)
2253                     is->audio_finished = is->audio_pkt_temp_serial;
2254                 return ret;
2255             }
2256             is->audio_buf_frames_pending = 1;
2257             tb = is->out_audio_filter->inputs[0]->time_base;
2258 #endif
2259
2260             data_size = av_samples_get_buffer_size(NULL, av_frame_get_channels(is->frame),
2261                                                    is->frame->nb_samples,
2262                                                    is->frame->format, 1);
2263
2264             dec_channel_layout =
2265                 (is->frame->channel_layout && av_frame_get_channels(is->frame) == av_get_channel_layout_nb_channels(is->frame->channel_layout)) ?
2266                 is->frame->channel_layout : av_get_default_channel_layout(av_frame_get_channels(is->frame));
2267             wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
2268
2269             if (is->frame->format        != is->audio_src.fmt            ||
2270                 dec_channel_layout       != is->audio_src.channel_layout ||
2271                 is->frame->sample_rate   != is->audio_src.freq           ||
2272                 (wanted_nb_samples       != is->frame->nb_samples && !is->swr_ctx)) {
2273                 swr_free(&is->swr_ctx);
2274                 is->swr_ctx = swr_alloc_set_opts(NULL,
2275                                                  is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2276                                                  dec_channel_layout,           is->frame->format, is->frame->sample_rate,
2277                                                  0, NULL);
2278                 if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2279                     av_log(NULL, AV_LOG_ERROR,
2280                            "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2281                             is->frame->sample_rate, av_get_sample_fmt_name(is->frame->format), av_frame_get_channels(is->frame),
2282                             is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2283                     break;
2284                 }
2285                 is->audio_src.channel_layout = dec_channel_layout;
2286                 is->audio_src.channels       = av_frame_get_channels(is->frame);
2287                 is->audio_src.freq = is->frame->sample_rate;
2288                 is->audio_src.fmt = is->frame->format;
2289             }
2290
2291             if (is->swr_ctx) {
2292                 const uint8_t **in = (const uint8_t **)is->frame->extended_data;
2293                 uint8_t **out = &is->audio_buf1;
2294                 int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate + 256;
2295                 int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2296                 int len2;
2297                 if (out_size < 0) {
2298                     av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2299                     break;
2300                 }
2301                 if (wanted_nb_samples != is->frame->nb_samples) {
2302                     if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / is->frame->sample_rate,
2303                                                 wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate) < 0) {
2304                         av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2305                         break;
2306                     }
2307                 }
2308                 av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2309                 if (!is->audio_buf1)
2310                     return AVERROR(ENOMEM);
2311                 len2 = swr_convert(is->swr_ctx, out, out_count, in, is->frame->nb_samples);
2312                 if (len2 < 0) {
2313                     av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2314                     break;
2315                 }
2316                 if (len2 == out_count) {
2317                     av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2318                     swr_init(is->swr_ctx);
2319                 }
2320                 is->audio_buf = is->audio_buf1;
2321                 resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2322             } else {
2323                 is->audio_buf = is->frame->data[0];
2324                 resampled_data_size = data_size;
2325             }
2326
2327             audio_clock0 = is->audio_clock;
2328             /* update the audio clock with the pts */
2329             if (is->frame->pts != AV_NOPTS_VALUE)
2330                 is->audio_clock = is->frame->pts * av_q2d(tb) + (double) is->frame->nb_samples / is->frame->sample_rate;
2331             else
2332                 is->audio_clock = NAN;
2333             is->audio_clock_serial = is->audio_pkt_temp_serial;
2334 #ifdef DEBUG
2335             {
2336                 static double last_clock;
2337                 printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2338                        is->audio_clock - last_clock,
2339                        is->audio_clock, audio_clock0);
2340                 last_clock = is->audio_clock;
2341             }
2342 #endif
2343             return resampled_data_size;
2344         }
2345
2346         /* free the current packet */
2347         if (pkt->data)
2348             av_free_packet(pkt);
2349         memset(pkt_temp, 0, sizeof(*pkt_temp));
2350         pkt_temp->stream_index = -1;
2351
2352         if (is->audioq.abort_request) {
2353             return -1;
2354         }
2355
2356         if (is->audioq.nb_packets == 0)
2357             SDL_CondSignal(is->continue_read_thread);
2358
2359         /* read next packet */
2360         if ((packet_queue_get(&is->audioq, pkt, 1, &is->audio_pkt_temp_serial)) < 0)
2361             return -1;
2362
2363         if (pkt->data == flush_pkt.data) {
2364             avcodec_flush_buffers(dec);
2365             is->audio_buf_frames_pending = 0;
2366             is->audio_frame_next_pts = AV_NOPTS_VALUE;
2367             if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek)
2368                 is->audio_frame_next_pts = is->audio_st->start_time;
2369         }
2370
2371         *pkt_temp = *pkt;
2372     }
2373 }
2374
2375 /* prepare a new audio buffer */
2376 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2377 {
2378     VideoState *is = opaque;
2379     int audio_size, len1;
2380     int bytes_per_sec;
2381     int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1);
2382
2383     audio_callback_time = av_gettime();
2384
2385     while (len > 0) {
2386         if (is->audio_buf_index >= is->audio_buf_size) {
2387            audio_size = audio_decode_frame(is);
2388            if (audio_size < 0) {
2389                 /* if error, just output silence */
2390                is->audio_buf      = is->silence_buf;
2391                is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size;
2392            } else {
2393                if (is->show_mode != SHOW_MODE_VIDEO)
2394                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2395                is->audio_buf_size = audio_size;
2396            }
2397            is->audio_buf_index = 0;
2398         }
2399         len1 = is->audio_buf_size - is->audio_buf_index;
2400         if (len1 > len)
2401             len1 = len;
2402         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2403         len -= len1;
2404         stream += len1;
2405         is->audio_buf_index += len1;
2406     }
2407     bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2408     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2409     /* Let's assume the audio driver that is used by SDL has two periods. */
2410     if (!isnan(is->audio_clock)) {
2411         set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
2412         sync_clock_to_slave(&is->extclk, &is->audclk);
2413     }
2414 }
2415
2416 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2417 {
2418     SDL_AudioSpec wanted_spec, spec;
2419     const char *env;
2420     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2421
2422     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2423     if (env) {
2424         wanted_nb_channels = atoi(env);
2425         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2426     }
2427     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2428         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2429         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2430     }
2431     wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2432     wanted_spec.freq = wanted_sample_rate;
2433     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2434         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2435         return -1;
2436     }
2437     wanted_spec.format = AUDIO_S16SYS;
2438     wanted_spec.silence = 0;
2439     wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2440     wanted_spec.callback = sdl_audio_callback;
2441     wanted_spec.userdata = opaque;
2442     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2443         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError());
2444         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2445         if (!wanted_spec.channels) {
2446             av_log(NULL, AV_LOG_ERROR,
2447                    "No more channel combinations to try, audio open failed\n");
2448             return -1;
2449         }
2450         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2451     }
2452     if (spec.format != AUDIO_S16SYS) {
2453         av_log(NULL, AV_LOG_ERROR,
2454                "SDL advised audio format %d is not supported!\n", spec.format);
2455         return -1;
2456     }
2457     if (spec.channels != wanted_spec.channels) {
2458         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2459         if (!wanted_channel_layout) {
2460             av_log(NULL, AV_LOG_ERROR,
2461                    "SDL advised channel count %d is not supported!\n", spec.channels);
2462             return -1;
2463         }
2464     }
2465
2466     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2467     audio_hw_params->freq = spec.freq;
2468     audio_hw_params->channel_layout = wanted_channel_layout;
2469     audio_hw_params->channels =  spec.channels;
2470     return spec.size;
2471 }
2472
2473 /* open a given stream. Return 0 if OK */
2474 static int stream_component_open(VideoState *is, int stream_index)
2475 {
2476     AVFormatContext *ic = is->ic;
2477     AVCodecContext *avctx;
2478     AVCodec *codec;
2479     const char *forced_codec_name = NULL;
2480     AVDictionary *opts;
2481     AVDictionaryEntry *t = NULL;
2482     int sample_rate, nb_channels;
2483     int64_t channel_layout;
2484     int ret;
2485     int stream_lowres = lowres;
2486
2487     if (stream_index < 0 || stream_index >= ic->nb_streams)
2488         return -1;
2489     avctx = ic->streams[stream_index]->codec;
2490
2491     codec = avcodec_find_decoder(avctx->codec_id);
2492
2493     switch(avctx->codec_type){
2494         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2495         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2496         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2497     }
2498     if (forced_codec_name)
2499         codec = avcodec_find_decoder_by_name(forced_codec_name);
2500     if (!codec) {
2501         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2502                                       "No codec could be found with name '%s'\n", forced_codec_name);
2503         else                   av_log(NULL, AV_LOG_WARNING,
2504                                       "No codec could be found with id %d\n", avctx->codec_id);
2505         return -1;
2506     }
2507
2508     avctx->codec_id = codec->id;
2509     avctx->workaround_bugs   = workaround_bugs;
2510     if(stream_lowres > av_codec_get_max_lowres(codec)){
2511         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2512                 av_codec_get_max_lowres(codec));
2513         stream_lowres = av_codec_get_max_lowres(codec);
2514     }
2515     av_codec_set_lowres(avctx, stream_lowres);
2516     avctx->error_concealment = error_concealment;
2517
2518     if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2519     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2520     if(codec->capabilities & CODEC_CAP_DR1)
2521         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2522
2523     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2524     if (!av_dict_get(opts, "threads", NULL, 0))
2525         av_dict_set(&opts, "threads", "auto", 0);
2526     if (stream_lowres)
2527         av_dict_set(&opts, "lowres", av_asprintf("%d", stream_lowres), AV_DICT_DONT_STRDUP_VAL);
2528     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2529         av_dict_set(&opts, "refcounted_frames", "1", 0);
2530     if (avcodec_open2(avctx, codec, &opts) < 0)
2531         return -1;
2532     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2533         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2534         return AVERROR_OPTION_NOT_FOUND;
2535     }
2536
2537     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2538     switch (avctx->codec_type) {
2539     case AVMEDIA_TYPE_AUDIO:
2540 #if CONFIG_AVFILTER
2541         {
2542             AVFilterLink *link;
2543
2544             is->audio_filter_src.freq           = avctx->sample_rate;
2545             is->audio_filter_src.channels       = avctx->channels;
2546             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2547             is->audio_filter_src.fmt            = avctx->sample_fmt;
2548             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2549                 return ret;
2550             link = is->out_audio_filter->inputs[0];
2551             sample_rate    = link->sample_rate;
2552             nb_channels    = link->channels;
2553             channel_layout = link->channel_layout;
2554         }
2555 #else
2556         sample_rate    = avctx->sample_rate;
2557         nb_channels    = avctx->channels;
2558         channel_layout = avctx->channel_layout;
2559 #endif
2560
2561         /* prepare audio output */
2562         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2563             return ret;
2564         is->audio_hw_buf_size = ret;
2565         is->audio_src = is->audio_tgt;
2566         is->audio_buf_size  = 0;
2567         is->audio_buf_index = 0;
2568
2569         /* init averaging filter */
2570         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2571         is->audio_diff_avg_count = 0;
2572         /* since we do not have a precise anough audio fifo fullness,
2573            we correct audio sync only if larger than this threshold */
2574         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);
2575
2576         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2577         memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
2578         is->audio_pkt_temp.stream_index = -1;
2579
2580         is->audio_stream = stream_index;
2581         is->audio_st = ic->streams[stream_index];
2582
2583         packet_queue_start(&is->audioq);
2584         SDL_PauseAudio(0);
2585         break;
2586     case AVMEDIA_TYPE_VIDEO:
2587         is->video_stream = stream_index;
2588         is->video_st = ic->streams[stream_index];
2589
2590         packet_queue_start(&is->videoq);
2591         is->video_tid = SDL_CreateThread(video_thread, is);
2592         is->queue_attachments_req = 1;
2593         break;
2594     case AVMEDIA_TYPE_SUBTITLE:
2595         is->subtitle_stream = stream_index;
2596         is->subtitle_st = ic->streams[stream_index];
2597         packet_queue_start(&is->subtitleq);
2598
2599         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2600         break;
2601     default:
2602         break;
2603     }
2604     return 0;
2605 }
2606
2607 static void stream_component_close(VideoState *is, int stream_index)
2608 {
2609     AVFormatContext *ic = is->ic;
2610     AVCodecContext *avctx;
2611
2612     if (stream_index < 0 || stream_index >= ic->nb_streams)
2613         return;
2614     avctx = ic->streams[stream_index]->codec;
2615
2616     switch (avctx->codec_type) {
2617     case AVMEDIA_TYPE_AUDIO:
2618         packet_queue_abort(&is->audioq);
2619
2620         SDL_CloseAudio();
2621
2622         packet_queue_flush(&is->audioq);
2623         av_free_packet(&is->audio_pkt);
2624         swr_free(&is->swr_ctx);
2625         av_freep(&is->audio_buf1);
2626         is->audio_buf1_size = 0;
2627         is->audio_buf = NULL;
2628         av_frame_free(&is->frame);
2629
2630         if (is->rdft) {
2631             av_rdft_end(is->rdft);
2632             av_freep(&is->rdft_data);
2633             is->rdft = NULL;
2634             is->rdft_bits = 0;
2635         }
2636 #if CONFIG_AVFILTER
2637         avfilter_graph_free(&is->agraph);
2638 #endif
2639         break;
2640     case AVMEDIA_TYPE_VIDEO:
2641         packet_queue_abort(&is->videoq);
2642
2643         /* note: we also signal this mutex to make sure we deblock the
2644            video thread in all cases */
2645         SDL_LockMutex(is->pictq_mutex);
2646         SDL_CondSignal(is->pictq_cond);
2647         SDL_UnlockMutex(is->pictq_mutex);
2648
2649         SDL_WaitThread(is->video_tid, NULL);
2650
2651         packet_queue_flush(&is->videoq);
2652         break;
2653     case AVMEDIA_TYPE_SUBTITLE:
2654         packet_queue_abort(&is->subtitleq);
2655
2656         /* note: we also signal this mutex to make sure we deblock the
2657            video thread in all cases */
2658         SDL_LockMutex(is->subpq_mutex);
2659         SDL_CondSignal(is->subpq_cond);
2660         SDL_UnlockMutex(is->subpq_mutex);
2661
2662         SDL_WaitThread(is->subtitle_tid, NULL);
2663
2664         packet_queue_flush(&is->subtitleq);
2665         break;
2666     default:
2667         break;
2668     }
2669
2670     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2671     avcodec_close(avctx);
2672     switch (avctx->codec_type) {
2673     case AVMEDIA_TYPE_AUDIO:
2674         is->audio_st = NULL;
2675         is->audio_stream = -1;
2676         break;
2677     case AVMEDIA_TYPE_VIDEO:
2678         is->video_st = NULL;
2679         is->video_stream = -1;
2680         break;
2681     case AVMEDIA_TYPE_SUBTITLE:
2682         is->subtitle_st = NULL;
2683         is->subtitle_stream = -1;
2684         break;
2685     default:
2686         break;
2687     }
2688 }
2689
2690 static int decode_interrupt_cb(void *ctx)
2691 {
2692     VideoState *is = ctx;
2693     return is->abort_request;
2694 }
2695
2696 static int is_realtime(AVFormatContext *s)
2697 {
2698     if(   !strcmp(s->iformat->name, "rtp")
2699        || !strcmp(s->iformat->name, "rtsp")
2700        || !strcmp(s->iformat->name, "sdp")
2701     )
2702         return 1;
2703
2704     if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
2705                  || !strncmp(s->filename, "udp:", 4)
2706                 )
2707     )
2708         return 1;
2709     return 0;
2710 }
2711
2712 /* this thread gets the stream from the disk or the network */
2713 static int read_thread(void *arg)
2714 {
2715     VideoState *is = arg;
2716     AVFormatContext *ic = NULL;
2717     int err, i, ret;
2718     int st_index[AVMEDIA_TYPE_NB];
2719     AVPacket pkt1, *pkt = &pkt1;
2720     int eof = 0;
2721     int64_t stream_start_time;
2722     int pkt_in_play_range = 0;
2723     AVDictionaryEntry *t;
2724     AVDictionary **opts;
2725     int orig_nb_streams;
2726     SDL_mutex *wait_mutex = SDL_CreateMutex();
2727
2728     memset(st_index, -1, sizeof(st_index));
2729     is->last_video_stream = is->video_stream = -1;
2730     is->last_audio_stream = is->audio_stream = -1;
2731     is->last_subtitle_stream = is->subtitle_stream = -1;
2732
2733     ic = avformat_alloc_context();
2734     ic->interrupt_callback.callback = decode_interrupt_cb;
2735     ic->interrupt_callback.opaque = is;
2736     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2737     if (err < 0) {
2738         print_error(is->filename, err);
2739         ret = -1;
2740         goto fail;
2741     }
2742     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2743         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2744         ret = AVERROR_OPTION_NOT_FOUND;
2745         goto fail;
2746     }
2747     is->ic = ic;
2748
2749     if (genpts)
2750         ic->flags |= AVFMT_FLAG_GENPTS;
2751
2752     opts = setup_find_stream_info_opts(ic, codec_opts);
2753     orig_nb_streams = ic->nb_streams;
2754
2755     err = avformat_find_stream_info(ic, opts);
2756     if (err < 0) {
2757         av_log(NULL, AV_LOG_WARNING,
2758                "%s: could not find codec parameters\n", is->filename);
2759         ret = -1;
2760         goto fail;
2761     }
2762     for (i = 0; i < orig_nb_streams; i++)
2763         av_dict_free(&opts[i]);
2764     av_freep(&opts);
2765
2766     if (ic->pb)
2767         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
2768
2769     if (seek_by_bytes < 0)
2770         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2771
2772     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2773
2774     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2775         window_title = av_asprintf("%s - %s", t->value, input_filename);
2776
2777     /* if seeking requested, we execute it */
2778     if (start_time != AV_NOPTS_VALUE) {
2779         int64_t timestamp;
2780
2781         timestamp = start_time;
2782         /* add the stream start time */
2783         if (ic->start_time != AV_NOPTS_VALUE)
2784             timestamp += ic->start_time;
2785         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2786         if (ret < 0) {
2787             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2788                     is->filename, (double)timestamp / AV_TIME_BASE);
2789         }
2790     }
2791
2792     is->realtime = is_realtime(ic);
2793
2794     for (i = 0; i < ic->nb_streams; i++)
2795         ic->streams[i]->discard = AVDISCARD_ALL;
2796     if (!video_disable)
2797         st_index[AVMEDIA_TYPE_VIDEO] =
2798             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2799                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2800     if (!audio_disable)
2801         st_index[AVMEDIA_TYPE_AUDIO] =
2802             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2803                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2804                                 st_index[AVMEDIA_TYPE_VIDEO],
2805                                 NULL, 0);
2806     if (!video_disable && !subtitle_disable)
2807         st_index[AVMEDIA_TYPE_SUBTITLE] =
2808             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2809                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2810                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2811                                  st_index[AVMEDIA_TYPE_AUDIO] :
2812                                  st_index[AVMEDIA_TYPE_VIDEO]),
2813                                 NULL, 0);
2814     if (show_status) {
2815         av_dump_format(ic, 0, is->filename, 0);
2816     }
2817
2818     is->show_mode = show_mode;
2819
2820     /* open the streams */
2821     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2822         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2823     }
2824
2825     ret = -1;
2826     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2827         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2828     }
2829     if (is->show_mode == SHOW_MODE_NONE)
2830         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2831
2832     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2833         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2834     }
2835
2836     if (is->video_stream < 0 && is->audio_stream < 0) {
2837         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
2838                is->filename);
2839         ret = -1;
2840         goto fail;
2841     }
2842
2843     if (infinite_buffer < 0 && is->realtime)
2844         infinite_buffer = 1;
2845
2846     for (;;) {
2847         if (is->abort_request)
2848             break;
2849         if (is->paused != is->last_paused) {
2850             is->last_paused = is->paused;
2851             if (is->paused)
2852                 is->read_pause_return = av_read_pause(ic);
2853             else
2854                 av_read_play(ic);
2855         }
2856 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2857         if (is->paused &&
2858                 (!strcmp(ic->iformat->name, "rtsp") ||
2859                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2860             /* wait 10 ms to avoid trying to get another packet */
2861             /* XXX: horrible */
2862             SDL_Delay(10);
2863             continue;
2864         }
2865 #endif
2866         if (is->seek_req) {
2867             int64_t seek_target = is->seek_pos;
2868             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2869             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2870 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2871 //      of the seek_pos/seek_rel variables
2872
2873             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2874             if (ret < 0) {
2875                 av_log(NULL, AV_LOG_ERROR,
2876                        "%s: error while seeking\n", is->ic->filename);
2877             } else {
2878                 if (is->audio_stream >= 0) {
2879                     packet_queue_flush(&is->audioq);
2880                     packet_queue_put(&is->audioq, &flush_pkt);
2881                 }
2882                 if (is->subtitle_stream >= 0) {
2883                     packet_queue_flush(&is->subtitleq);
2884                     packet_queue_put(&is->subtitleq, &flush_pkt);
2885                 }
2886                 if (is->video_stream >= 0) {
2887                     packet_queue_flush(&is->videoq);
2888                     packet_queue_put(&is->videoq, &flush_pkt);
2889                 }
2890                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
2891                    set_clock(&is->extclk, NAN, 0);
2892                 } else {
2893                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
2894                 }
2895             }
2896             is->seek_req = 0;
2897             is->queue_attachments_req = 1;
2898             eof = 0;
2899             if (is->paused)
2900                 step_to_next_frame(is);
2901         }
2902         if (is->queue_attachments_req) {
2903             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
2904                 AVPacket copy;
2905                 if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
2906                     goto fail;
2907                 packet_queue_put(&is->videoq, &copy);
2908                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2909             }
2910             is->queue_attachments_req = 0;
2911         }
2912
2913         /* if the queue are full, no need to read more */
2914         if (infinite_buffer<1 &&
2915               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2916             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
2917                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request
2918                     || (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC))
2919                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
2920             /* wait 10 ms */
2921             SDL_LockMutex(wait_mutex);
2922             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
2923             SDL_UnlockMutex(wait_mutex);
2924             continue;
2925         }
2926         if (!is->paused &&
2927             (!is->audio_st || is->audio_finished == is->audioq.serial) &&
2928             (!is->video_st || (is->video_finished == is->videoq.serial && is->pictq_size == 0))) {
2929             if (loop != 1 && (!loop || --loop)) {
2930                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2931             } else if (autoexit) {
2932                 ret = AVERROR_EOF;
2933                 goto fail;
2934             }
2935         }
2936         if (eof) {
2937             if (is->video_stream >= 0)
2938                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2939             if (is->audio_stream >= 0)
2940                 packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
2941             SDL_Delay(10);
2942             eof=0;
2943             continue;
2944         }
2945         ret = av_read_frame(ic, pkt);
2946         if (ret < 0) {
2947             if (ret == AVERROR_EOF || url_feof(ic->pb))
2948                 eof = 1;
2949             if (ic->pb && ic->pb->error)
2950                 break;
2951             SDL_LockMutex(wait_mutex);
2952             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
2953             SDL_UnlockMutex(wait_mutex);
2954             continue;
2955         }
2956         /* check if packet is in play range specified by user, then queue, otherwise discard */
2957         stream_start_time = ic->streams[pkt->stream_index]->start_time;
2958         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2959                 (pkt->pts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
2960                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2961                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2962                 <= ((double)duration / 1000000);
2963         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2964             packet_queue_put(&is->audioq, pkt);
2965         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
2966                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
2967             packet_queue_put(&is->videoq, pkt);
2968         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2969             packet_queue_put(&is->subtitleq, pkt);
2970         } else {
2971             av_free_packet(pkt);
2972         }
2973     }
2974     /* wait until the end */
2975     while (!is->abort_request) {
2976         SDL_Delay(100);
2977     }
2978
2979     ret = 0;
2980  fail:
2981     /* close each stream */
2982     if (is->audio_stream >= 0)
2983         stream_component_close(is, is->audio_stream);
2984     if (is->video_stream >= 0)
2985         stream_component_close(is, is->video_stream);
2986     if (is->subtitle_stream >= 0)
2987         stream_component_close(is, is->subtitle_stream);
2988     if (is->ic) {
2989         avformat_close_input(&is->ic);
2990     }
2991
2992     if (ret != 0) {
2993         SDL_Event event;
2994
2995         event.type = FF_QUIT_EVENT;
2996         event.user.data1 = is;
2997         SDL_PushEvent(&event);
2998     }
2999     SDL_DestroyMutex(wait_mutex);
3000     return 0;
3001 }
3002
3003 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3004 {
3005     VideoState *is;
3006
3007     is = av_mallocz(sizeof(VideoState));
3008     if (!is)
3009         return NULL;
3010     av_strlcpy(is->filename, filename, sizeof(is->filename));
3011     is->iformat = iformat;
3012     is->ytop    = 0;
3013     is->xleft   = 0;
3014
3015     /* start video display */
3016     is->pictq_mutex = SDL_CreateMutex();
3017     is->pictq_cond  = SDL_CreateCond();
3018
3019     is->subpq_mutex = SDL_CreateMutex();
3020     is->subpq_cond  = SDL_CreateCond();
3021
3022     packet_queue_init(&is->videoq);
3023     packet_queue_init(&is->audioq);
3024     packet_queue_init(&is->subtitleq);
3025
3026     is->continue_read_thread = SDL_CreateCond();
3027
3028     init_clock(&is->vidclk, &is->videoq.serial);
3029     init_clock(&is->audclk, &is->audioq.serial);
3030     init_clock(&is->extclk, &is->extclk.serial);
3031     is->audio_clock_serial = -1;
3032     is->audio_last_serial = -1;
3033     is->av_sync_type = av_sync_type;
3034     is->read_tid     = SDL_CreateThread(read_thread, is);
3035     if (!is->read_tid) {
3036         av_free(is);
3037         return NULL;
3038     }
3039     return is;
3040 }
3041
3042 static void stream_cycle_channel(VideoState *is, int codec_type)
3043 {
3044     AVFormatContext *ic = is->ic;
3045     int start_index, stream_index;
3046     int old_index;
3047     AVStream *st;
3048     AVProgram *p = NULL;
3049     int nb_streams = is->ic->nb_streams;
3050
3051     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3052         start_index = is->last_video_stream;
3053         old_index = is->video_stream;
3054     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3055         start_index = is->last_audio_stream;
3056         old_index = is->audio_stream;
3057     } else {
3058         start_index = is->last_subtitle_stream;
3059         old_index = is->subtitle_stream;
3060     }
3061     stream_index = start_index;
3062
3063     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3064         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3065         if (p) {
3066             nb_streams = p->nb_stream_indexes;
3067             for (start_index = 0; start_index < nb_streams; start_index++)
3068                 if (p->stream_index[start_index] == stream_index)
3069                     break;
3070             if (start_index == nb_streams)
3071                 start_index = -1;
3072             stream_index = start_index;
3073         }
3074     }
3075
3076     for (;;) {
3077         if (++stream_index >= nb_streams)
3078         {
3079             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3080             {
3081                 stream_index = -1;
3082                 is->last_subtitle_stream = -1;
3083                 goto the_end;
3084             }
3085             if (start_index == -1)
3086                 return;
3087             stream_index = 0;
3088         }
3089         if (stream_index == start_index)
3090             return;
3091         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3092         if (st->codec->codec_type == codec_type) {
3093             /* check that parameters are OK */
3094             switch (codec_type) {
3095             case AVMEDIA_TYPE_AUDIO:
3096                 if (st->codec->sample_rate != 0 &&
3097                     st->codec->channels != 0)
3098                     goto the_end;
3099                 break;
3100             case AVMEDIA_TYPE_VIDEO:
3101             case AVMEDIA_TYPE_SUBTITLE:
3102                 goto the_end;
3103             default:
3104                 break;
3105             }
3106         }
3107     }
3108  the_end:
3109     if (p && stream_index != -1)
3110         stream_index = p->stream_index[stream_index];
3111     stream_component_close(is, old_index);
3112     stream_component_open(is, stream_index);
3113 }
3114
3115
3116 static void toggle_full_screen(VideoState *is)
3117 {
3118 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
3119     /* OS X needs to reallocate the SDL overlays */
3120     int i;
3121     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
3122         is->pictq[i].reallocate = 1;
3123 #endif
3124     is_full_screen = !is_full_screen;
3125     video_open(is, 1, NULL);
3126 }
3127
3128 static void toggle_audio_display(VideoState *is)
3129 {
3130     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
3131     int next = is->show_mode;
3132     do {
3133         next = (next + 1) % SHOW_MODE_NB;
3134     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3135     if (is->show_mode != next) {
3136         fill_rectangle(screen,
3137                     is->xleft, is->ytop, is->width, is->height,
3138                     bgcolor, 1);
3139         is->force_refresh = 1;
3140         is->show_mode = next;
3141     }
3142 }
3143
3144 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3145     double remaining_time = 0.0;
3146     SDL_PumpEvents();
3147     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS)) {
3148         if (!cursor_hidden && av_gettime() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3149             SDL_ShowCursor(0);
3150             cursor_hidden = 1;
3151         }
3152         if (remaining_time > 0.0)
3153             av_usleep((int64_t)(remaining_time * 1000000.0));
3154         remaining_time = REFRESH_RATE;
3155         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3156             video_refresh(is, &remaining_time);
3157         SDL_PumpEvents();
3158     }
3159 }
3160
3161 /* handle an event sent by the GUI */
3162 static void event_loop(VideoState *cur_stream)
3163 {
3164     SDL_Event event;
3165     double incr, pos, frac;
3166
3167     for (;;) {
3168         double x;
3169         refresh_loop_wait_event(cur_stream, &event);
3170         switch (event.type) {
3171         case SDL_KEYDOWN:
3172             if (exit_on_keydown) {
3173                 do_exit(cur_stream);
3174                 break;
3175             }
3176             switch (event.key.keysym.sym) {
3177             case SDLK_ESCAPE:
3178             case SDLK_q:
3179                 do_exit(cur_stream);
3180                 break;
3181             case SDLK_f:
3182                 toggle_full_screen(cur_stream);
3183                 cur_stream->force_refresh = 1;
3184                 break;
3185             case SDLK_p:
3186             case SDLK_SPACE:
3187                 toggle_pause(cur_stream);
3188                 break;
3189             case SDLK_s: // S: Step to next frame
3190                 step_to_next_frame(cur_stream);
3191                 break;
3192             case SDLK_a:
3193                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3194                 break;
3195             case SDLK_v:
3196                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3197                 break;
3198             case SDLK_c:
3199                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3200                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3201                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3202                 break;
3203             case SDLK_t:
3204                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3205                 break;
3206             case SDLK_w:
3207                 toggle_audio_display(cur_stream);
3208                 break;
3209             case SDLK_PAGEUP:
3210                 incr = 600.0;
3211                 goto do_seek;
3212             case SDLK_PAGEDOWN:
3213                 incr = -600.0;
3214                 goto do_seek;
3215             case SDLK_LEFT:
3216                 incr = -10.0;
3217                 goto do_seek;
3218             case SDLK_RIGHT:
3219                 incr = 10.0;
3220                 goto do_seek;
3221             case SDLK_UP:
3222                 incr = 60.0;
3223                 goto do_seek;
3224             case SDLK_DOWN:
3225                 incr = -60.0;
3226             do_seek:
3227                     if (seek_by_bytes) {
3228                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
3229                             pos = cur_stream->video_current_pos;
3230                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
3231                             pos = cur_stream->audio_pkt.pos;
3232                         } else
3233                             pos = avio_tell(cur_stream->ic->pb);
3234                         if (cur_stream->ic->bit_rate)
3235                             incr *= cur_stream->ic->bit_rate / 8.0;
3236                         else
3237                             incr *= 180000.0;
3238                         pos += incr;
3239                         stream_seek(cur_stream, pos, incr, 1);
3240                     } else {
3241                         pos = get_master_clock(cur_stream);
3242                         if (isnan(pos))
3243                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3244                         pos += incr;
3245                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3246                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3247                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3248                     }
3249                 break;
3250             default:
3251                 break;
3252             }
3253             break;
3254         case SDL_VIDEOEXPOSE:
3255             cur_stream->force_refresh = 1;
3256             break;
3257         case SDL_MOUSEBUTTONDOWN:
3258             if (exit_on_mousedown) {
3259                 do_exit(cur_stream);
3260                 break;
3261             }
3262         case SDL_MOUSEMOTION:
3263             if (cursor_hidden) {
3264                 SDL_ShowCursor(1);
3265                 cursor_hidden = 0;
3266             }
3267             cursor_last_shown = av_gettime();
3268             if (event.type == SDL_MOUSEBUTTONDOWN) {
3269                 x = event.button.x;
3270             } else {
3271                 if (event.motion.state != SDL_PRESSED)
3272                     break;
3273                 x = event.motion.x;
3274             }
3275                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3276                     uint64_t size =  avio_size(cur_stream->ic->pb);
3277                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3278                 } else {
3279                     int64_t ts;
3280                     int ns, hh, mm, ss;
3281                     int tns, thh, tmm, tss;
3282                     tns  = cur_stream->ic->duration / 1000000LL;
3283                     thh  = tns / 3600;
3284                     tmm  = (tns % 3600) / 60;
3285                     tss  = (tns % 60);
3286                     frac = x / cur_stream->width;
3287                     ns   = frac * tns;
3288                     hh   = ns / 3600;
3289                     mm   = (ns % 3600) / 60;
3290                     ss   = (ns % 60);
3291                     av_log(NULL, AV_LOG_INFO,
3292                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3293                             hh, mm, ss, thh, tmm, tss);
3294                     ts = frac * cur_stream->ic->duration;
3295                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3296                         ts += cur_stream->ic->start_time;
3297                     stream_seek(cur_stream, ts, 0, 0);
3298                 }
3299             break;
3300         case SDL_VIDEORESIZE:
3301                 screen = SDL_SetVideoMode(FFMIN(16383, event.resize.w), event.resize.h, 0,
3302                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
3303                 if (!screen) {
3304                     av_log(NULL, AV_LOG_FATAL, "Failed to set video mode\n");
3305                     do_exit(cur_stream);
3306                 }
3307                 screen_width  = cur_stream->width  = screen->w;
3308                 screen_height = cur_stream->height = screen->h;
3309                 cur_stream->force_refresh = 1;
3310             break;
3311         case SDL_QUIT:
3312         case FF_QUIT_EVENT:
3313             do_exit(cur_stream);
3314             break;
3315         case FF_ALLOC_EVENT:
3316             alloc_picture(event.user.data1);
3317             break;
3318         default:
3319             break;
3320         }
3321     }
3322 }
3323
3324 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3325 {
3326     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3327     return opt_default(NULL, "video_size", arg);
3328 }
3329
3330 static int opt_width(void *optctx, const char *opt, const char *arg)
3331 {
3332     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3333     return 0;
3334 }
3335
3336 static int opt_height(void *optctx, const char *opt, const char *arg)
3337 {
3338     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3339     return 0;
3340 }
3341
3342 static int opt_format(void *optctx, const char *opt, const char *arg)
3343 {
3344     file_iformat = av_find_input_format(arg);
3345     if (!file_iformat) {
3346         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3347         return AVERROR(EINVAL);
3348     }
3349     return 0;
3350 }
3351
3352 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3353 {
3354     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3355     return opt_default(NULL, "pixel_format", arg);
3356 }
3357
3358 static int opt_sync(void *optctx, const char *opt, const char *arg)
3359 {
3360     if (!strcmp(arg, "audio"))
3361         av_sync_type = AV_SYNC_AUDIO_MASTER;
3362     else if (!strcmp(arg, "video"))
3363         av_sync_type = AV_SYNC_VIDEO_MASTER;
3364     else if (!strcmp(arg, "ext"))
3365         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3366     else {
3367         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3368         exit(1);
3369     }
3370     return 0;
3371 }
3372
3373 static int opt_seek(void *optctx, const char *opt, const char *arg)
3374 {
3375     start_time = parse_time_or_die(opt, arg, 1);
3376     return 0;
3377 }
3378
3379 static int opt_duration(void *optctx, const char *opt, const char *arg)
3380 {
3381     duration = parse_time_or_die(opt, arg, 1);
3382     return 0;
3383 }
3384
3385 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3386 {
3387     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3388                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3389                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3390                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3391     return 0;
3392 }
3393
3394 static void opt_input_file(void *optctx, const char *filename)
3395 {
3396     if (input_filename) {
3397         av_log(NULL, AV_LOG_FATAL,
3398                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3399                 filename, input_filename);
3400         exit(1);
3401     }
3402     if (!strcmp(filename, "-"))
3403         filename = "pipe:";
3404     input_filename = filename;
3405 }
3406
3407 static int opt_codec(void *optctx, const char *opt, const char *arg)
3408 {
3409    const char *spec = strchr(opt, ':');
3410    if (!spec) {
3411        av_log(NULL, AV_LOG_ERROR,
3412               "No media specifier was specified in '%s' in option '%s'\n",
3413                arg, opt);
3414        return AVERROR(EINVAL);
3415    }
3416    spec++;
3417    switch (spec[0]) {
3418    case 'a' :    audio_codec_name = arg; break;
3419    case 's' : subtitle_codec_name = arg; break;
3420    case 'v' :    video_codec_name = arg; break;
3421    default:
3422        av_log(NULL, AV_LOG_ERROR,
3423               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3424        return AVERROR(EINVAL);
3425    }
3426    return 0;
3427 }
3428
3429 static int dummy;
3430
3431 static const OptionDef options[] = {
3432 #include "cmdutils_common_opts.h"
3433     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3434     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3435     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3436     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3437     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3438     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3439     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3440     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
3441     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
3442     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
3443     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3444     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3445     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3446     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3447     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3448     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3449     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3450     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { &workaround_bugs }, "workaround bugs", "" },
3451     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3452     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3453     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3454     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3455     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { &error_concealment }, "set error concealment options",  "bit_mask" },
3456     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3457     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3458     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3459     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3460     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3461     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3462     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3463     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3464 #if CONFIG_AVFILTER
3465     { "vf", OPT_STRING | HAS_ARG, { &vfilters }, "set video filters", "filter_graph" },
3466     { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
3467 #endif
3468     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
3469     { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3470     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
3471     { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
3472     { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
3473     { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
3474     { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
3475     { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
3476     { NULL, },
3477 };
3478
3479 static void show_usage(void)
3480 {
3481     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3482     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3483     av_log(NULL, AV_LOG_INFO, "\n");
3484 }
3485
3486 void show_help_default(const char *opt, const char *arg)
3487 {
3488     av_log_set_callback(log_callback_help);
3489     show_usage();
3490     show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
3491     show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
3492     printf("\n");
3493     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3494     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3495 #if !CONFIG_AVFILTER
3496     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3497 #else
3498     show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
3499 #endif
3500     printf("\nWhile playing:\n"
3501            "q, ESC              quit\n"
3502            "f                   toggle full screen\n"
3503            "p, SPC              pause\n"
3504            "a                   cycle audio channel in the current program\n"
3505            "v                   cycle video channel\n"
3506            "t                   cycle subtitle channel in the current program\n"
3507            "c                   cycle program\n"
3508            "w                   show audio waves\n"
3509            "s                   activate frame-step mode\n"
3510            "left/right          seek backward/forward 10 seconds\n"
3511            "down/up             seek backward/forward 1 minute\n"
3512            "page down/page up   seek backward/forward 10 minutes\n"
3513            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3514            );
3515 }
3516
3517 static int lockmgr(void **mtx, enum AVLockOp op)
3518 {
3519    switch(op) {
3520       case AV_LOCK_CREATE:
3521           *mtx = SDL_CreateMutex();
3522           if(!*mtx)
3523               return 1;
3524           return 0;
3525       case AV_LOCK_OBTAIN:
3526           return !!SDL_LockMutex(*mtx);
3527       case AV_LOCK_RELEASE:
3528           return !!SDL_UnlockMutex(*mtx);
3529       case AV_LOCK_DESTROY:
3530           SDL_DestroyMutex(*mtx);
3531           return 0;
3532    }
3533    return 1;
3534 }
3535
3536 /* Called from the main */
3537 int main(int argc, char **argv)
3538 {
3539     int flags;
3540     VideoState *is;
3541     char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy";
3542
3543     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3544     parse_loglevel(argc, argv, options);
3545
3546     /* register all codecs, demux and protocols */
3547     avcodec_register_all();
3548 #if CONFIG_AVDEVICE
3549     avdevice_register_all();
3550 #endif
3551 #if CONFIG_AVFILTER
3552     avfilter_register_all();
3553 #endif
3554     av_register_all();
3555     avformat_network_init();
3556
3557     init_opts();
3558
3559     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
3560     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
3561
3562     show_banner(argc, argv, options);
3563
3564     parse_options(NULL, argc, argv, options, opt_input_file);
3565
3566     if (!input_filename) {
3567         show_usage();
3568         av_log(NULL, AV_LOG_FATAL, "An input file must be specified\n");
3569         av_log(NULL, AV_LOG_FATAL,
3570                "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3571         exit(1);
3572     }
3573
3574     if (display_disable) {
3575         video_disable = 1;
3576     }
3577     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3578     if (audio_disable)
3579         flags &= ~SDL_INIT_AUDIO;
3580     if (display_disable)
3581         SDL_putenv(dummy_videodriver); /* For the event queue, we always need a video driver. */
3582 #if !defined(__MINGW32__) && !defined(__APPLE__)
3583     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3584 #endif
3585     if (SDL_Init (flags)) {
3586         av_log(NULL, AV_LOG_FATAL, "Could not initialize SDL - %s\n", SDL_GetError());
3587         av_log(NULL, AV_LOG_FATAL, "(Did you set the DISPLAY variable?)\n");
3588         exit(1);
3589     }
3590
3591     if (!display_disable) {
3592         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3593         fs_screen_width = vi->current_w;
3594         fs_screen_height = vi->current_h;
3595     }
3596
3597     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3598     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3599     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3600
3601     if (av_lockmgr_register(lockmgr)) {
3602         av_log(NULL, AV_LOG_FATAL, "Could not initialize lock manager!\n");
3603         do_exit(NULL);
3604     }
3605
3606     av_init_packet(&flush_pkt);
3607     flush_pkt.data = (uint8_t *)&flush_pkt;
3608
3609     is = stream_open(input_filename, file_iformat);
3610     if (!is) {
3611         av_log(NULL, AV_LOG_FATAL, "Failed to initialize VideoState!\n");
3612         do_exit(NULL);
3613     }
3614
3615     event_loop(is);
3616
3617     /* never returns */
3618
3619     return 0;
3620 }