Merge commit '84f131921ffb43d8070d5680e91f6a24d66ccac4'
[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 <stdint.h>
32
33 #include "libavutil/avstring.h"
34 #include "libavutil/colorspace.h"
35 #include "libavutil/mathematics.h"
36 #include "libavutil/pixdesc.h"
37 #include "libavutil/imgutils.h"
38 #include "libavutil/dict.h"
39 #include "libavutil/parseutils.h"
40 #include "libavutil/samplefmt.h"
41 #include "libavutil/avassert.h"
42 #include "libavutil/time.h"
43 #include "libavformat/avformat.h"
44 #include "libavdevice/avdevice.h"
45 #include "libswscale/swscale.h"
46 #include "libavutil/opt.h"
47 #include "libavcodec/avfft.h"
48 #include "libswresample/swresample.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avcodec.h"
52 # include "libavfilter/avfilter.h"
53 # include "libavfilter/buffersink.h"
54 # include "libavfilter/buffersrc.h"
55 #endif
56
57 #include <SDL.h>
58 #include <SDL_thread.h>
59
60 #include "cmdutils.h"
61
62 #include <assert.h>
63
64 const char program_name[] = "ffplay";
65 const int program_birth_year = 2003;
66
67 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
68 #define MIN_FRAMES 5
69
70 /* SDL audio buffer size, in samples. Should be small to have precise
71    A/V sync as SDL does not have hardware buffer fullness info. */
72 #define SDL_AUDIO_BUFFER_SIZE 1024
73
74 /* no AV sync correction is done if below the minimum AV sync threshold */
75 #define AV_SYNC_THRESHOLD_MIN 0.01
76 /* AV sync correction is done if above the maximum AV sync threshold */
77 #define AV_SYNC_THRESHOLD_MAX 0.1
78 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
79 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
80 /* no AV correction is done if too big error */
81 #define AV_NOSYNC_THRESHOLD 10.0
82
83 /* maximum audio speed change to get correct sync */
84 #define SAMPLE_CORRECTION_PERCENT_MAX 10
85
86 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
87 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
88 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
89 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
90
91 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
92 #define AUDIO_DIFF_AVG_NB   20
93
94 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
95 #define REFRESH_RATE 0.01
96
97 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
98 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
99 #define SAMPLE_ARRAY_SIZE (8 * 65536)
100
101 #define CURSOR_HIDE_DELAY 1000000
102
103 static int64_t sws_flags = SWS_BICUBIC;
104
105 typedef struct MyAVPacketList {
106     AVPacket pkt;
107     struct MyAVPacketList *next;
108     int serial;
109 } MyAVPacketList;
110
111 typedef struct PacketQueue {
112     MyAVPacketList *first_pkt, *last_pkt;
113     int nb_packets;
114     int size;
115     int abort_request;
116     int serial;
117     SDL_mutex *mutex;
118     SDL_cond *cond;
119 } PacketQueue;
120
121 #define VIDEO_PICTURE_QUEUE_SIZE 3
122 #define SUBPICTURE_QUEUE_SIZE 4
123
124 typedef struct VideoPicture {
125     double pts;             // presentation timestamp for this picture
126     double duration;        // estimated duration based on frame rate
127     int64_t pos;            // byte position in file
128     SDL_Overlay *bmp;
129     int width, height; /* source height & width */
130     int allocated;
131     int reallocate;
132     int serial;
133
134     AVRational sar;
135 } VideoPicture;
136
137 typedef struct SubPicture {
138     double pts; /* presentation time stamp for this picture */
139     AVSubtitle sub;
140     int serial;
141 } SubPicture;
142
143 typedef struct AudioParams {
144     int freq;
145     int channels;
146     int64_t channel_layout;
147     enum AVSampleFormat fmt;
148 } AudioParams;
149
150 typedef struct Clock {
151     double pts;           /* clock base */
152     double pts_drift;     /* clock base minus time at which we updated the clock */
153     double last_updated;
154     double speed;
155     int serial;           /* clock is based on a packet with this serial */
156     int paused;
157     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
158 } Clock;
159
160 enum {
161     AV_SYNC_AUDIO_MASTER, /* default choice */
162     AV_SYNC_VIDEO_MASTER,
163     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
164 };
165
166 typedef struct VideoState {
167     SDL_Thread *read_tid;
168     SDL_Thread *video_tid;
169     AVInputFormat *iformat;
170     int no_background;
171     int abort_request;
172     int force_refresh;
173     int paused;
174     int last_paused;
175     int queue_attachments_req;
176     int seek_req;
177     int seek_flags;
178     int64_t seek_pos;
179     int64_t seek_rel;
180     int read_pause_return;
181     AVFormatContext *ic;
182     int realtime;
183     int audio_finished;
184     int video_finished;
185
186     Clock audclk;
187     Clock vidclk;
188     Clock extclk;
189
190     int audio_stream;
191
192     int av_sync_type;
193
194     double audio_clock;
195     int audio_clock_serial;
196     double audio_diff_cum; /* used for AV difference average computation */
197     double audio_diff_avg_coef;
198     double audio_diff_threshold;
199     int audio_diff_avg_count;
200     AVStream *audio_st;
201     PacketQueue audioq;
202     int audio_hw_buf_size;
203     uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
204     uint8_t *audio_buf;
205     uint8_t *audio_buf1;
206     unsigned int audio_buf_size; /* in bytes */
207     unsigned int audio_buf1_size;
208     int audio_buf_index; /* in bytes */
209     int audio_write_buf_size;
210     int audio_buf_frames_pending;
211     AVPacket audio_pkt_temp;
212     AVPacket audio_pkt;
213     int audio_pkt_temp_serial;
214     int audio_last_serial;
215     struct AudioParams audio_src;
216 #if CONFIG_AVFILTER
217     struct AudioParams audio_filter_src;
218 #endif
219     struct AudioParams audio_tgt;
220     struct SwrContext *swr_ctx;
221     int frame_drops_early;
222     int frame_drops_late;
223     AVFrame *frame;
224     int64_t audio_frame_next_pts;
225
226     enum ShowMode {
227         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
228     } show_mode;
229     int16_t sample_array[SAMPLE_ARRAY_SIZE];
230     int sample_array_index;
231     int last_i_start;
232     RDFTContext *rdft;
233     int rdft_bits;
234     FFTSample *rdft_data;
235     int xpos;
236     double last_vis_time;
237
238     SDL_Thread *subtitle_tid;
239     int subtitle_stream;
240     AVStream *subtitle_st;
241     PacketQueue subtitleq;
242     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
243     int subpq_size, subpq_rindex, subpq_windex;
244     SDL_mutex *subpq_mutex;
245     SDL_cond *subpq_cond;
246
247     double frame_timer;
248     double frame_last_returned_time;
249     double frame_last_filter_delay;
250     int video_stream;
251     AVStream *video_st;
252     PacketQueue videoq;
253     int64_t video_current_pos;      // current displayed file pos
254     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
255     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
256     int pictq_size, pictq_rindex, pictq_windex;
257     SDL_mutex *pictq_mutex;
258     SDL_cond *pictq_cond;
259 #if !CONFIG_AVFILTER
260     struct SwsContext *img_convert_ctx;
261 #endif
262     SDL_Rect last_display_rect;
263
264     char filename[1024];
265     int width, height, xleft, ytop;
266     int step;
267
268 #if CONFIG_AVFILTER
269     AVFilterContext *in_video_filter;   // the first filter in the video chain
270     AVFilterContext *out_video_filter;  // the last filter in the video chain
271     AVFilterContext *in_audio_filter;   // the first filter in the audio chain
272     AVFilterContext *out_audio_filter;  // the last filter in the audio chain
273     AVFilterGraph *agraph;              // audio filter graph
274 #endif
275
276     int last_video_stream, last_audio_stream, last_subtitle_stream;
277
278     SDL_cond *continue_read_thread;
279 } VideoState;
280
281 /* options specified by the user */
282 static AVInputFormat *file_iformat;
283 static const char *input_filename;
284 static const char *window_title;
285 static int fs_screen_width;
286 static int fs_screen_height;
287 static int default_width  = 640;
288 static int default_height = 480;
289 static int screen_width  = 0;
290 static int screen_height = 0;
291 static int audio_disable;
292 static int video_disable;
293 static int subtitle_disable;
294 static int wanted_stream[AVMEDIA_TYPE_NB] = {
295     [AVMEDIA_TYPE_AUDIO]    = -1,
296     [AVMEDIA_TYPE_VIDEO]    = -1,
297     [AVMEDIA_TYPE_SUBTITLE] = -1,
298 };
299 static int seek_by_bytes = -1;
300 static int display_disable;
301 static int show_status = 1;
302 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
303 static int64_t start_time = AV_NOPTS_VALUE;
304 static int64_t duration = AV_NOPTS_VALUE;
305 static int workaround_bugs = 1;
306 static int fast = 0;
307 static int genpts = 0;
308 static int lowres = 0;
309 static int error_concealment = 3;
310 static int decoder_reorder_pts = -1;
311 static int autoexit;
312 static int exit_on_keydown;
313 static int exit_on_mousedown;
314 static int loop = 1;
315 static int framedrop = -1;
316 static int infinite_buffer = -1;
317 static enum ShowMode show_mode = SHOW_MODE_NONE;
318 static const char *audio_codec_name;
319 static const char *subtitle_codec_name;
320 static const char *video_codec_name;
321 double rdftspeed = 0.02;
322 static int64_t cursor_last_shown;
323 static int cursor_hidden = 0;
324 #if CONFIG_AVFILTER
325 static char *vfilters = NULL;
326 static char *afilters = NULL;
327 #endif
328
329 /* current context */
330 static int is_full_screen;
331 static int64_t audio_callback_time;
332
333 static AVPacket flush_pkt;
334
335 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
336 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
337
338 static SDL_Surface *screen;
339
340 static inline
341 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
342                    enum AVSampleFormat fmt2, int64_t channel_count2)
343 {
344     /* If channel count == 1, planar and non-planar formats are the same */
345     if (channel_count1 == 1 && channel_count2 == 1)
346         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
347     else
348         return channel_count1 != channel_count2 || fmt1 != fmt2;
349 }
350
351 static inline
352 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
353 {
354     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
355         return channel_layout;
356     else
357         return 0;
358 }
359
360 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
361
362 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
363 {
364     MyAVPacketList *pkt1;
365
366     if (q->abort_request)
367        return -1;
368
369     pkt1 = av_malloc(sizeof(MyAVPacketList));
370     if (!pkt1)
371         return -1;
372     pkt1->pkt = *pkt;
373     pkt1->next = NULL;
374     if (pkt == &flush_pkt)
375         q->serial++;
376     pkt1->serial = q->serial;
377
378     if (!q->last_pkt)
379         q->first_pkt = pkt1;
380     else
381         q->last_pkt->next = pkt1;
382     q->last_pkt = pkt1;
383     q->nb_packets++;
384     q->size += pkt1->pkt.size + sizeof(*pkt1);
385     /* XXX: should duplicate packet data in DV case */
386     SDL_CondSignal(q->cond);
387     return 0;
388 }
389
390 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
391 {
392     int ret;
393
394     /* duplicate the packet */
395     if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
396         return -1;
397
398     SDL_LockMutex(q->mutex);
399     ret = packet_queue_put_private(q, pkt);
400     SDL_UnlockMutex(q->mutex);
401
402     if (pkt != &flush_pkt && ret < 0)
403         av_free_packet(pkt);
404
405     return ret;
406 }
407
408 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
409 {
410     AVPacket pkt1, *pkt = &pkt1;
411     av_init_packet(pkt);
412     pkt->data = NULL;
413     pkt->size = 0;
414     pkt->stream_index = stream_index;
415     return packet_queue_put(q, pkt);
416 }
417
418 /* packet queue handling */
419 static void packet_queue_init(PacketQueue *q)
420 {
421     memset(q, 0, sizeof(PacketQueue));
422     q->mutex = SDL_CreateMutex();
423     q->cond = SDL_CreateCond();
424     q->abort_request = 1;
425 }
426
427 static void packet_queue_flush(PacketQueue *q)
428 {
429     MyAVPacketList *pkt, *pkt1;
430
431     SDL_LockMutex(q->mutex);
432     for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
433         pkt1 = pkt->next;
434         av_free_packet(&pkt->pkt);
435         av_freep(&pkt);
436     }
437     q->last_pkt = NULL;
438     q->first_pkt = NULL;
439     q->nb_packets = 0;
440     q->size = 0;
441     SDL_UnlockMutex(q->mutex);
442 }
443
444 static void packet_queue_destroy(PacketQueue *q)
445 {
446     packet_queue_flush(q);
447     SDL_DestroyMutex(q->mutex);
448     SDL_DestroyCond(q->cond);
449 }
450
451 static void packet_queue_abort(PacketQueue *q)
452 {
453     SDL_LockMutex(q->mutex);
454
455     q->abort_request = 1;
456
457     SDL_CondSignal(q->cond);
458
459     SDL_UnlockMutex(q->mutex);
460 }
461
462 static void packet_queue_start(PacketQueue *q)
463 {
464     SDL_LockMutex(q->mutex);
465     q->abort_request = 0;
466     packet_queue_put_private(q, &flush_pkt);
467     SDL_UnlockMutex(q->mutex);
468 }
469
470 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
471 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
472 {
473     MyAVPacketList *pkt1;
474     int ret;
475
476     SDL_LockMutex(q->mutex);
477
478     for (;;) {
479         if (q->abort_request) {
480             ret = -1;
481             break;
482         }
483
484         pkt1 = q->first_pkt;
485         if (pkt1) {
486             q->first_pkt = pkt1->next;
487             if (!q->first_pkt)
488                 q->last_pkt = NULL;
489             q->nb_packets--;
490             q->size -= pkt1->pkt.size + sizeof(*pkt1);
491             *pkt = pkt1->pkt;
492             if (serial)
493                 *serial = pkt1->serial;
494             av_free(pkt1);
495             ret = 1;
496             break;
497         } else if (!block) {
498             ret = 0;
499             break;
500         } else {
501             SDL_CondWait(q->cond, q->mutex);
502         }
503     }
504     SDL_UnlockMutex(q->mutex);
505     return ret;
506 }
507
508 static inline void fill_rectangle(SDL_Surface *screen,
509                                   int x, int y, int w, int h, int color, int update)
510 {
511     SDL_Rect rect;
512     rect.x = x;
513     rect.y = y;
514     rect.w = w;
515     rect.h = h;
516     SDL_FillRect(screen, &rect, color);
517     if (update && w > 0 && h > 0)
518         SDL_UpdateRect(screen, x, y, w, h);
519 }
520
521 /* draw only the border of a rectangle */
522 static void fill_border(int xleft, int ytop, int width, int height, int x, int y, int w, int h, int color, int update)
523 {
524     int w1, w2, h1, h2;
525
526     /* fill the background */
527     w1 = x;
528     if (w1 < 0)
529         w1 = 0;
530     w2 = width - (x + w);
531     if (w2 < 0)
532         w2 = 0;
533     h1 = y;
534     if (h1 < 0)
535         h1 = 0;
536     h2 = height - (y + h);
537     if (h2 < 0)
538         h2 = 0;
539     fill_rectangle(screen,
540                    xleft, ytop,
541                    w1, height,
542                    color, update);
543     fill_rectangle(screen,
544                    xleft + width - w2, ytop,
545                    w2, height,
546                    color, update);
547     fill_rectangle(screen,
548                    xleft + w1, ytop,
549                    width - w1 - w2, h1,
550                    color, update);
551     fill_rectangle(screen,
552                    xleft + w1, ytop + height - h2,
553                    width - w1 - w2, h2,
554                    color, update);
555 }
556
557 #define ALPHA_BLEND(a, oldp, newp, s)\
558 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
559
560 #define RGBA_IN(r, g, b, a, s)\
561 {\
562     unsigned int v = ((const uint32_t *)(s))[0];\
563     a = (v >> 24) & 0xff;\
564     r = (v >> 16) & 0xff;\
565     g = (v >> 8) & 0xff;\
566     b = v & 0xff;\
567 }
568
569 #define YUVA_IN(y, u, v, a, s, pal)\
570 {\
571     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
572     a = (val >> 24) & 0xff;\
573     y = (val >> 16) & 0xff;\
574     u = (val >> 8) & 0xff;\
575     v = val & 0xff;\
576 }
577
578 #define YUVA_OUT(d, y, u, v, a)\
579 {\
580     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
581 }
582
583
584 #define BPP 1
585
586 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
587 {
588     int wrap, wrap3, width2, skip2;
589     int y, u, v, a, u1, v1, a1, w, h;
590     uint8_t *lum, *cb, *cr;
591     const uint8_t *p;
592     const uint32_t *pal;
593     int dstx, dsty, dstw, dsth;
594
595     dstw = av_clip(rect->w, 0, imgw);
596     dsth = av_clip(rect->h, 0, imgh);
597     dstx = av_clip(rect->x, 0, imgw - dstw);
598     dsty = av_clip(rect->y, 0, imgh - dsth);
599     lum = dst->data[0] + dsty * dst->linesize[0];
600     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
601     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
602
603     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
604     skip2 = dstx >> 1;
605     wrap = dst->linesize[0];
606     wrap3 = rect->pict.linesize[0];
607     p = rect->pict.data[0];
608     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
609
610     if (dsty & 1) {
611         lum += dstx;
612         cb += skip2;
613         cr += skip2;
614
615         if (dstx & 1) {
616             YUVA_IN(y, u, v, a, p, pal);
617             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
618             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
619             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
620             cb++;
621             cr++;
622             lum++;
623             p += BPP;
624         }
625         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
626             YUVA_IN(y, u, v, a, p, pal);
627             u1 = u;
628             v1 = v;
629             a1 = a;
630             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
631
632             YUVA_IN(y, u, v, a, p + BPP, pal);
633             u1 += u;
634             v1 += v;
635             a1 += a;
636             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
637             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
638             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
639             cb++;
640             cr++;
641             p += 2 * BPP;
642             lum += 2;
643         }
644         if (w) {
645             YUVA_IN(y, u, v, a, p, pal);
646             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
647             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
648             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
649             p++;
650             lum++;
651         }
652         p += wrap3 - dstw * BPP;
653         lum += wrap - dstw - dstx;
654         cb += dst->linesize[1] - width2 - skip2;
655         cr += dst->linesize[2] - width2 - skip2;
656     }
657     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
658         lum += dstx;
659         cb += skip2;
660         cr += skip2;
661
662         if (dstx & 1) {
663             YUVA_IN(y, u, v, a, p, pal);
664             u1 = u;
665             v1 = v;
666             a1 = a;
667             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
668             p += wrap3;
669             lum += wrap;
670             YUVA_IN(y, u, v, a, p, pal);
671             u1 += u;
672             v1 += v;
673             a1 += a;
674             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
675             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
676             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
677             cb++;
678             cr++;
679             p += -wrap3 + BPP;
680             lum += -wrap + 1;
681         }
682         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
683             YUVA_IN(y, u, v, a, p, pal);
684             u1 = u;
685             v1 = v;
686             a1 = a;
687             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
688
689             YUVA_IN(y, u, v, a, p + BPP, pal);
690             u1 += u;
691             v1 += v;
692             a1 += a;
693             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
694             p += wrap3;
695             lum += wrap;
696
697             YUVA_IN(y, u, v, a, p, pal);
698             u1 += u;
699             v1 += v;
700             a1 += a;
701             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
702
703             YUVA_IN(y, u, v, a, p + BPP, pal);
704             u1 += u;
705             v1 += v;
706             a1 += a;
707             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
708
709             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
710             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
711
712             cb++;
713             cr++;
714             p += -wrap3 + 2 * BPP;
715             lum += -wrap + 2;
716         }
717         if (w) {
718             YUVA_IN(y, u, v, a, p, pal);
719             u1 = u;
720             v1 = v;
721             a1 = a;
722             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
723             p += wrap3;
724             lum += wrap;
725             YUVA_IN(y, u, v, a, p, pal);
726             u1 += u;
727             v1 += v;
728             a1 += a;
729             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
730             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
731             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
732             cb++;
733             cr++;
734             p += -wrap3 + BPP;
735             lum += -wrap + 1;
736         }
737         p += wrap3 + (wrap3 - dstw * BPP);
738         lum += wrap + (wrap - dstw - dstx);
739         cb += dst->linesize[1] - width2 - skip2;
740         cr += dst->linesize[2] - width2 - skip2;
741     }
742     /* handle odd height */
743     if (h) {
744         lum += dstx;
745         cb += skip2;
746         cr += skip2;
747
748         if (dstx & 1) {
749             YUVA_IN(y, u, v, a, p, pal);
750             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
751             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
752             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
753             cb++;
754             cr++;
755             lum++;
756             p += BPP;
757         }
758         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
759             YUVA_IN(y, u, v, a, p, pal);
760             u1 = u;
761             v1 = v;
762             a1 = a;
763             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
764
765             YUVA_IN(y, u, v, a, p + BPP, pal);
766             u1 += u;
767             v1 += v;
768             a1 += a;
769             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
770             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
771             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
772             cb++;
773             cr++;
774             p += 2 * BPP;
775             lum += 2;
776         }
777         if (w) {
778             YUVA_IN(y, u, v, a, p, pal);
779             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
780             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
781             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
782         }
783     }
784 }
785
786 static void free_picture(VideoPicture *vp)
787 {
788      if (vp->bmp) {
789          SDL_FreeYUVOverlay(vp->bmp);
790          vp->bmp = NULL;
791      }
792 }
793
794 static void free_subpicture(SubPicture *sp)
795 {
796     avsubtitle_free(&sp->sub);
797 }
798
799 static void calculate_display_rect(SDL_Rect *rect, int scr_xleft, int scr_ytop, int scr_width, int scr_height, VideoPicture *vp)
800 {
801     float aspect_ratio;
802     int width, height, x, y;
803
804     if (vp->sar.num == 0)
805         aspect_ratio = 0;
806     else
807         aspect_ratio = av_q2d(vp->sar);
808
809     if (aspect_ratio <= 0.0)
810         aspect_ratio = 1.0;
811     aspect_ratio *= (float)vp->width / (float)vp->height;
812
813     /* XXX: we suppose the screen has a 1.0 pixel ratio */
814     height = scr_height;
815     width = ((int)rint(height * aspect_ratio)) & ~1;
816     if (width > scr_width) {
817         width = scr_width;
818         height = ((int)rint(width / aspect_ratio)) & ~1;
819     }
820     x = (scr_width - width) / 2;
821     y = (scr_height - height) / 2;
822     rect->x = scr_xleft + x;
823     rect->y = scr_ytop  + y;
824     rect->w = FFMAX(width,  1);
825     rect->h = FFMAX(height, 1);
826 }
827
828 static void video_image_display(VideoState *is)
829 {
830     VideoPicture *vp;
831     SubPicture *sp;
832     AVPicture pict;
833     SDL_Rect rect;
834     int i;
835
836     vp = &is->pictq[is->pictq_rindex];
837     if (vp->bmp) {
838         if (is->subtitle_st) {
839             if (is->subpq_size > 0) {
840                 sp = &is->subpq[is->subpq_rindex];
841
842                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
843                     SDL_LockYUVOverlay (vp->bmp);
844
845                     pict.data[0] = vp->bmp->pixels[0];
846                     pict.data[1] = vp->bmp->pixels[2];
847                     pict.data[2] = vp->bmp->pixels[1];
848
849                     pict.linesize[0] = vp->bmp->pitches[0];
850                     pict.linesize[1] = vp->bmp->pitches[2];
851                     pict.linesize[2] = vp->bmp->pitches[1];
852
853                     for (i = 0; i < sp->sub.num_rects; i++)
854                         blend_subrect(&pict, sp->sub.rects[i],
855                                       vp->bmp->w, vp->bmp->h);
856
857                     SDL_UnlockYUVOverlay (vp->bmp);
858                 }
859             }
860         }
861
862         calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp);
863
864         SDL_DisplayYUVOverlay(vp->bmp, &rect);
865
866         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) {
867             int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
868             fill_border(is->xleft, is->ytop, is->width, is->height, rect.x, rect.y, rect.w, rect.h, bgcolor, 1);
869             is->last_display_rect = rect;
870         }
871     }
872 }
873
874 static inline int compute_mod(int a, int b)
875 {
876     return a < 0 ? a%b + b : a%b;
877 }
878
879 static void video_audio_display(VideoState *s)
880 {
881     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
882     int ch, channels, h, h2, bgcolor, fgcolor;
883     int64_t time_diff;
884     int rdft_bits, nb_freq;
885
886     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
887         ;
888     nb_freq = 1 << (rdft_bits - 1);
889
890     /* compute display index : center on currently output samples */
891     channels = s->audio_tgt.channels;
892     nb_display_channels = channels;
893     if (!s->paused) {
894         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
895         n = 2 * channels;
896         delay = s->audio_write_buf_size;
897         delay /= n;
898
899         /* to be more precise, we take into account the time spent since
900            the last buffer computation */
901         if (audio_callback_time) {
902             time_diff = av_gettime() - audio_callback_time;
903             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
904         }
905
906         delay += 2 * data_used;
907         if (delay < data_used)
908             delay = data_used;
909
910         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
911         if (s->show_mode == SHOW_MODE_WAVES) {
912             h = INT_MIN;
913             for (i = 0; i < 1000; i += channels) {
914                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
915                 int a = s->sample_array[idx];
916                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
917                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
918                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
919                 int score = a - d;
920                 if (h < score && (b ^ c) < 0) {
921                     h = score;
922                     i_start = idx;
923                 }
924             }
925         }
926
927         s->last_i_start = i_start;
928     } else {
929         i_start = s->last_i_start;
930     }
931
932     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
933     if (s->show_mode == SHOW_MODE_WAVES) {
934         fill_rectangle(screen,
935                        s->xleft, s->ytop, s->width, s->height,
936                        bgcolor, 0);
937
938         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
939
940         /* total height for one channel */
941         h = s->height / nb_display_channels;
942         /* graph height / 2 */
943         h2 = (h * 9) / 20;
944         for (ch = 0; ch < nb_display_channels; ch++) {
945             i = i_start + ch;
946             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
947             for (x = 0; x < s->width; x++) {
948                 y = (s->sample_array[i] * h2) >> 15;
949                 if (y < 0) {
950                     y = -y;
951                     ys = y1 - y;
952                 } else {
953                     ys = y1;
954                 }
955                 fill_rectangle(screen,
956                                s->xleft + x, ys, 1, y,
957                                fgcolor, 0);
958                 i += channels;
959                 if (i >= SAMPLE_ARRAY_SIZE)
960                     i -= SAMPLE_ARRAY_SIZE;
961             }
962         }
963
964         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
965
966         for (ch = 1; ch < nb_display_channels; ch++) {
967             y = s->ytop + ch * h;
968             fill_rectangle(screen,
969                            s->xleft, y, s->width, 1,
970                            fgcolor, 0);
971         }
972         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
973     } else {
974         nb_display_channels= FFMIN(nb_display_channels, 2);
975         if (rdft_bits != s->rdft_bits) {
976             av_rdft_end(s->rdft);
977             av_free(s->rdft_data);
978             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
979             s->rdft_bits = rdft_bits;
980             s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
981         }
982         {
983             FFTSample *data[2];
984             for (ch = 0; ch < nb_display_channels; ch++) {
985                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
986                 i = i_start + ch;
987                 for (x = 0; x < 2 * nb_freq; x++) {
988                     double w = (x-nb_freq) * (1.0 / nb_freq);
989                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
990                     i += channels;
991                     if (i >= SAMPLE_ARRAY_SIZE)
992                         i -= SAMPLE_ARRAY_SIZE;
993                 }
994                 av_rdft_calc(s->rdft, data[ch]);
995             }
996             /* Least efficient way to do this, we should of course
997              * directly access it but it is more than fast enough. */
998             for (y = 0; y < s->height; y++) {
999                 double w = 1 / sqrt(nb_freq);
1000                 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]));
1001                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
1002                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
1003                 a = FFMIN(a, 255);
1004                 b = FFMIN(b, 255);
1005                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
1006
1007                 fill_rectangle(screen,
1008                             s->xpos, s->height-y, 1, 1,
1009                             fgcolor, 0);
1010             }
1011         }
1012         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
1013         if (!s->paused)
1014             s->xpos++;
1015         if (s->xpos >= s->width)
1016             s->xpos= s->xleft;
1017     }
1018 }
1019
1020 static void stream_close(VideoState *is)
1021 {
1022     int i;
1023     /* XXX: use a special url_shutdown call to abort parse cleanly */
1024     is->abort_request = 1;
1025     SDL_WaitThread(is->read_tid, NULL);
1026     packet_queue_destroy(&is->videoq);
1027     packet_queue_destroy(&is->audioq);
1028     packet_queue_destroy(&is->subtitleq);
1029
1030     /* free all pictures */
1031     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
1032         free_picture(&is->pictq[i]);
1033     for (i = 0; i < SUBPICTURE_QUEUE_SIZE; i++)
1034         free_subpicture(&is->subpq[i]);
1035     SDL_DestroyMutex(is->pictq_mutex);
1036     SDL_DestroyCond(is->pictq_cond);
1037     SDL_DestroyMutex(is->subpq_mutex);
1038     SDL_DestroyCond(is->subpq_cond);
1039     SDL_DestroyCond(is->continue_read_thread);
1040 #if !CONFIG_AVFILTER
1041     sws_freeContext(is->img_convert_ctx);
1042 #endif
1043     av_free(is);
1044 }
1045
1046 static void do_exit(VideoState *is)
1047 {
1048     if (is) {
1049         stream_close(is);
1050     }
1051     av_lockmgr_register(NULL);
1052     uninit_opts();
1053 #if CONFIG_AVFILTER
1054     av_freep(&vfilters);
1055 #endif
1056     avformat_network_deinit();
1057     if (show_status)
1058         printf("\n");
1059     SDL_Quit();
1060     av_log(NULL, AV_LOG_QUIET, "%s", "");
1061     exit(0);
1062 }
1063
1064 static void sigterm_handler(int sig)
1065 {
1066     exit(123);
1067 }
1068
1069 static void set_default_window_size(VideoPicture *vp)
1070 {
1071     SDL_Rect rect;
1072     calculate_display_rect(&rect, 0, 0, INT_MAX, vp->height, vp);
1073     default_width  = rect.w;
1074     default_height = rect.h;
1075 }
1076
1077 static int video_open(VideoState *is, int force_set_video_mode, VideoPicture *vp)
1078 {
1079     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
1080     int w,h;
1081
1082     if (is_full_screen) flags |= SDL_FULLSCREEN;
1083     else                flags |= SDL_RESIZABLE;
1084
1085     if (vp && vp->width)
1086         set_default_window_size(vp);
1087
1088     if (is_full_screen && fs_screen_width) {
1089         w = fs_screen_width;
1090         h = fs_screen_height;
1091     } else if (!is_full_screen && screen_width) {
1092         w = screen_width;
1093         h = screen_height;
1094     } else {
1095         w = default_width;
1096         h = default_height;
1097     }
1098     w = FFMIN(16383, w);
1099     if (screen && is->width == screen->w && screen->w == w
1100        && is->height== screen->h && screen->h == h && !force_set_video_mode)
1101         return 0;
1102     screen = SDL_SetVideoMode(w, h, 0, flags);
1103     if (!screen) {
1104         av_log(NULL, AV_LOG_FATAL, "SDL: could not set video mode - exiting\n");
1105         do_exit(is);
1106     }
1107     if (!window_title)
1108         window_title = input_filename;
1109     SDL_WM_SetCaption(window_title, window_title);
1110
1111     is->width  = screen->w;
1112     is->height = screen->h;
1113
1114     return 0;
1115 }
1116
1117 /* display the current picture, if any */
1118 static void video_display(VideoState *is)
1119 {
1120     if (!screen)
1121         video_open(is, 0, NULL);
1122     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1123         video_audio_display(is);
1124     else if (is->video_st)
1125         video_image_display(is);
1126 }
1127
1128 static double get_clock(Clock *c)
1129 {
1130     if (*c->queue_serial != c->serial)
1131         return NAN;
1132     if (c->paused) {
1133         return c->pts;
1134     } else {
1135         double time = av_gettime() / 1000000.0;
1136         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1137     }
1138 }
1139
1140 static void set_clock_at(Clock *c, double pts, int serial, double time)
1141 {
1142     c->pts = pts;
1143     c->last_updated = time;
1144     c->pts_drift = c->pts - time;
1145     c->serial = serial;
1146 }
1147
1148 static void set_clock(Clock *c, double pts, int serial)
1149 {
1150     double time = av_gettime() / 1000000.0;
1151     set_clock_at(c, pts, serial, time);
1152 }
1153
1154 static void set_clock_speed(Clock *c, double speed)
1155 {
1156     set_clock(c, get_clock(c), c->serial);
1157     c->speed = speed;
1158 }
1159
1160 static void init_clock(Clock *c, int *queue_serial)
1161 {
1162     c->speed = 1.0;
1163     c->paused = 0;
1164     c->queue_serial = queue_serial;
1165     set_clock(c, NAN, -1);
1166 }
1167
1168 static void sync_clock_to_slave(Clock *c, Clock *slave)
1169 {
1170     double clock = get_clock(c);
1171     double slave_clock = get_clock(slave);
1172     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1173         set_clock(c, slave_clock, slave->serial);
1174 }
1175
1176 static int get_master_sync_type(VideoState *is) {
1177     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1178         if (is->video_st)
1179             return AV_SYNC_VIDEO_MASTER;
1180         else
1181             return AV_SYNC_AUDIO_MASTER;
1182     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1183         if (is->audio_st)
1184             return AV_SYNC_AUDIO_MASTER;
1185         else
1186             return AV_SYNC_EXTERNAL_CLOCK;
1187     } else {
1188         return AV_SYNC_EXTERNAL_CLOCK;
1189     }
1190 }
1191
1192 /* get the current master clock value */
1193 static double get_master_clock(VideoState *is)
1194 {
1195     double val;
1196
1197     switch (get_master_sync_type(is)) {
1198         case AV_SYNC_VIDEO_MASTER:
1199             val = get_clock(&is->vidclk);
1200             break;
1201         case AV_SYNC_AUDIO_MASTER:
1202             val = get_clock(&is->audclk);
1203             break;
1204         default:
1205             val = get_clock(&is->extclk);
1206             break;
1207     }
1208     return val;
1209 }
1210
1211 static void check_external_clock_speed(VideoState *is) {
1212    if (is->video_stream >= 0 && is->videoq.nb_packets <= MIN_FRAMES / 2 ||
1213        is->audio_stream >= 0 && is->audioq.nb_packets <= MIN_FRAMES / 2) {
1214        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1215    } else if ((is->video_stream < 0 || is->videoq.nb_packets > MIN_FRAMES * 2) &&
1216               (is->audio_stream < 0 || is->audioq.nb_packets > MIN_FRAMES * 2)) {
1217        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1218    } else {
1219        double speed = is->extclk.speed;
1220        if (speed != 1.0)
1221            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1222    }
1223 }
1224
1225 /* seek in the stream */
1226 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1227 {
1228     if (!is->seek_req) {
1229         is->seek_pos = pos;
1230         is->seek_rel = rel;
1231         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1232         if (seek_by_bytes)
1233             is->seek_flags |= AVSEEK_FLAG_BYTE;
1234         is->seek_req = 1;
1235         SDL_CondSignal(is->continue_read_thread);
1236     }
1237 }
1238
1239 /* pause or resume the video */
1240 static void stream_toggle_pause(VideoState *is)
1241 {
1242     if (is->paused) {
1243         is->frame_timer += av_gettime() / 1000000.0 + is->vidclk.pts_drift - is->vidclk.pts;
1244         if (is->read_pause_return != AVERROR(ENOSYS)) {
1245             is->vidclk.paused = 0;
1246         }
1247         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1248     }
1249     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1250     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1251 }
1252
1253 static void toggle_pause(VideoState *is)
1254 {
1255     stream_toggle_pause(is);
1256     is->step = 0;
1257 }
1258
1259 static void step_to_next_frame(VideoState *is)
1260 {
1261     /* if the stream is paused unpause it, then step */
1262     if (is->paused)
1263         stream_toggle_pause(is);
1264     is->step = 1;
1265 }
1266
1267 static double compute_target_delay(double delay, VideoState *is)
1268 {
1269     double sync_threshold, diff;
1270
1271     /* update delay to follow master synchronisation source */
1272     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1273         /* if video is slave, we try to correct big delays by
1274            duplicating or deleting a frame */
1275         diff = get_clock(&is->vidclk) - get_master_clock(is);
1276
1277         /* skip or repeat frame. We take into account the
1278            delay to compute the threshold. I still don't know
1279            if it is the best guess */
1280         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1281         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1282             if (diff <= -sync_threshold)
1283                 delay = FFMAX(0, delay + diff);
1284             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1285                 delay = delay + diff;
1286             else if (diff >= sync_threshold)
1287                 delay = 2 * delay;
1288         }
1289     }
1290
1291     av_dlog(NULL, "video: delay=%0.3f A-V=%f\n",
1292             delay, -diff);
1293
1294     return delay;
1295 }
1296
1297 static double vp_duration(VideoState *is, VideoPicture *vp, VideoPicture *nextvp) {
1298     if (vp->serial == nextvp->serial) {
1299         double duration = nextvp->pts - vp->pts;
1300         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1301             return vp->duration;
1302         else
1303             return duration;
1304     } else {
1305         return 0.0;
1306     }
1307 }
1308
1309 static void pictq_next_picture(VideoState *is) {
1310     /* update queue size and signal for next picture */
1311     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1312         is->pictq_rindex = 0;
1313
1314     SDL_LockMutex(is->pictq_mutex);
1315     is->pictq_size--;
1316     SDL_CondSignal(is->pictq_cond);
1317     SDL_UnlockMutex(is->pictq_mutex);
1318 }
1319
1320 static int pictq_prev_picture(VideoState *is) {
1321     VideoPicture *prevvp;
1322     int ret = 0;
1323     /* update queue size and signal for the previous picture */
1324     prevvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
1325     if (prevvp->allocated && prevvp->serial == is->videoq.serial) {
1326         SDL_LockMutex(is->pictq_mutex);
1327         if (is->pictq_size < VIDEO_PICTURE_QUEUE_SIZE) {
1328             if (--is->pictq_rindex == -1)
1329                 is->pictq_rindex = VIDEO_PICTURE_QUEUE_SIZE - 1;
1330             is->pictq_size++;
1331             ret = 1;
1332         }
1333         SDL_CondSignal(is->pictq_cond);
1334         SDL_UnlockMutex(is->pictq_mutex);
1335     }
1336     return ret;
1337 }
1338
1339 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1340     /* update current video pts */
1341     set_clock(&is->vidclk, pts, serial);
1342     sync_clock_to_slave(&is->extclk, &is->vidclk);
1343     is->video_current_pos = pos;
1344 }
1345
1346 /* called to display each frame */
1347 static void video_refresh(void *opaque, double *remaining_time)
1348 {
1349     VideoState *is = opaque;
1350     double time;
1351
1352     SubPicture *sp, *sp2;
1353
1354     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1355         check_external_clock_speed(is);
1356
1357     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1358         time = av_gettime() / 1000000.0;
1359         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1360             video_display(is);
1361             is->last_vis_time = time;
1362         }
1363         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1364     }
1365
1366     if (is->video_st) {
1367         int redisplay = 0;
1368         if (is->force_refresh)
1369             redisplay = pictq_prev_picture(is);
1370 retry:
1371         if (is->pictq_size == 0) {
1372             // nothing to do, no picture to display in the queue
1373         } else {
1374             double last_duration, duration, delay;
1375             VideoPicture *vp, *lastvp;
1376
1377             /* dequeue the picture */
1378             vp = &is->pictq[is->pictq_rindex];
1379             lastvp = &is->pictq[(is->pictq_rindex + VIDEO_PICTURE_QUEUE_SIZE - 1) % VIDEO_PICTURE_QUEUE_SIZE];
1380
1381             if (vp->serial != is->videoq.serial) {
1382                 pictq_next_picture(is);
1383                 is->video_current_pos = -1;
1384                 redisplay = 0;
1385                 goto retry;
1386             }
1387
1388             if (lastvp->serial != vp->serial && !redisplay)
1389                 is->frame_timer = av_gettime() / 1000000.0;
1390
1391             if (is->paused)
1392                 goto display;
1393
1394             /* compute nominal last_duration */
1395             last_duration = vp_duration(is, lastvp, vp);
1396             if (redisplay)
1397                 delay = 0.0;
1398             else
1399                 delay = compute_target_delay(last_duration, is);
1400
1401             time= av_gettime()/1000000.0;
1402             if (time < is->frame_timer + delay && !redisplay) {
1403                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1404                 return;
1405             }
1406
1407             is->frame_timer += delay;
1408             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1409                 is->frame_timer = time;
1410
1411             SDL_LockMutex(is->pictq_mutex);
1412             if (!redisplay && !isnan(vp->pts))
1413                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1414             SDL_UnlockMutex(is->pictq_mutex);
1415
1416             if (is->pictq_size > 1) {
1417                 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1418                 duration = vp_duration(is, vp, nextvp);
1419                 if(!is->step && (redisplay || framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1420                     if (!redisplay)
1421                         is->frame_drops_late++;
1422                     pictq_next_picture(is);
1423                     redisplay = 0;
1424                     goto retry;
1425                 }
1426             }
1427
1428             if (is->subtitle_st) {
1429                     while (is->subpq_size > 0) {
1430                         sp = &is->subpq[is->subpq_rindex];
1431
1432                         if (is->subpq_size > 1)
1433                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1434                         else
1435                             sp2 = NULL;
1436
1437                         if (sp->serial != is->subtitleq.serial
1438                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1439                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1440                         {
1441                             free_subpicture(sp);
1442
1443                             /* update queue size and signal for next picture */
1444                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1445                                 is->subpq_rindex = 0;
1446
1447                             SDL_LockMutex(is->subpq_mutex);
1448                             is->subpq_size--;
1449                             SDL_CondSignal(is->subpq_cond);
1450                             SDL_UnlockMutex(is->subpq_mutex);
1451                         } else {
1452                             break;
1453                         }
1454                     }
1455             }
1456
1457 display:
1458             /* display picture */
1459             if (!display_disable && is->show_mode == SHOW_MODE_VIDEO)
1460                 video_display(is);
1461
1462             pictq_next_picture(is);
1463
1464             if (is->step && !is->paused)
1465                 stream_toggle_pause(is);
1466         }
1467     }
1468     is->force_refresh = 0;
1469     if (show_status) {
1470         static int64_t last_time;
1471         int64_t cur_time;
1472         int aqsize, vqsize, sqsize;
1473         double av_diff;
1474
1475         cur_time = av_gettime();
1476         if (!last_time || (cur_time - last_time) >= 30000) {
1477             aqsize = 0;
1478             vqsize = 0;
1479             sqsize = 0;
1480             if (is->audio_st)
1481                 aqsize = is->audioq.size;
1482             if (is->video_st)
1483                 vqsize = is->videoq.size;
1484             if (is->subtitle_st)
1485                 sqsize = is->subtitleq.size;
1486             av_diff = 0;
1487             if (is->audio_st && is->video_st)
1488                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1489             else if (is->video_st)
1490                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1491             else if (is->audio_st)
1492                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1493             av_log(NULL, AV_LOG_INFO,
1494                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1495                    get_master_clock(is),
1496                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1497                    av_diff,
1498                    is->frame_drops_early + is->frame_drops_late,
1499                    aqsize / 1024,
1500                    vqsize / 1024,
1501                    sqsize,
1502                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_dts : 0,
1503                    is->video_st ? is->video_st->codec->pts_correction_num_faulty_pts : 0);
1504             fflush(stdout);
1505             last_time = cur_time;
1506         }
1507     }
1508 }
1509
1510 /* allocate a picture (needs to do that in main thread to avoid
1511    potential locking problems */
1512 static void alloc_picture(VideoState *is)
1513 {
1514     VideoPicture *vp;
1515     int64_t bufferdiff;
1516
1517     vp = &is->pictq[is->pictq_windex];
1518
1519     free_picture(vp);
1520
1521     video_open(is, 0, vp);
1522
1523     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1524                                    SDL_YV12_OVERLAY,
1525                                    screen);
1526     bufferdiff = vp->bmp ? FFMAX(vp->bmp->pixels[0], vp->bmp->pixels[1]) - FFMIN(vp->bmp->pixels[0], vp->bmp->pixels[1]) : 0;
1527     if (!vp->bmp || vp->bmp->pitches[0] < vp->width || bufferdiff < (int64_t)vp->height * vp->bmp->pitches[0]) {
1528         /* SDL allocates a buffer smaller than requested if the video
1529          * overlay hardware is unable to support the requested size. */
1530         av_log(NULL, AV_LOG_FATAL,
1531                "Error: the video system does not support an image\n"
1532                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1533                         "to reduce the image size.\n", vp->width, vp->height );
1534         do_exit(is);
1535     }
1536
1537     SDL_LockMutex(is->pictq_mutex);
1538     vp->allocated = 1;
1539     SDL_CondSignal(is->pictq_cond);
1540     SDL_UnlockMutex(is->pictq_mutex);
1541 }
1542
1543 static void duplicate_right_border_pixels(SDL_Overlay *bmp) {
1544     int i, width, height;
1545     Uint8 *p, *maxp;
1546     for (i = 0; i < 3; i++) {
1547         width  = bmp->w;
1548         height = bmp->h;
1549         if (i > 0) {
1550             width  >>= 1;
1551             height >>= 1;
1552         }
1553         if (bmp->pitches[i] > width) {
1554             maxp = bmp->pixels[i] + bmp->pitches[i] * height - 1;
1555             for (p = bmp->pixels[i] + width - 1; p < maxp; p += bmp->pitches[i])
1556                 *(p+1) = *p;
1557         }
1558     }
1559 }
1560
1561 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1562 {
1563     VideoPicture *vp;
1564
1565 #if defined(DEBUG_SYNC) && 0
1566     printf("frame_type=%c pts=%0.3f\n",
1567            av_get_picture_type_char(src_frame->pict_type), pts);
1568 #endif
1569
1570     /* wait until we have space to put a new picture */
1571     SDL_LockMutex(is->pictq_mutex);
1572
1573     /* keep the last already displayed picture in the queue */
1574     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE - 1 &&
1575            !is->videoq.abort_request) {
1576         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1577     }
1578     SDL_UnlockMutex(is->pictq_mutex);
1579
1580     if (is->videoq.abort_request)
1581         return -1;
1582
1583     vp = &is->pictq[is->pictq_windex];
1584
1585     vp->sar = src_frame->sample_aspect_ratio;
1586
1587     /* alloc or resize hardware picture buffer */
1588     if (!vp->bmp || vp->reallocate || !vp->allocated ||
1589         vp->width  != src_frame->width ||
1590         vp->height != src_frame->height) {
1591         SDL_Event event;
1592
1593         vp->allocated  = 0;
1594         vp->reallocate = 0;
1595         vp->width = src_frame->width;
1596         vp->height = src_frame->height;
1597
1598         /* the allocation must be done in the main thread to avoid
1599            locking problems. */
1600         event.type = FF_ALLOC_EVENT;
1601         event.user.data1 = is;
1602         SDL_PushEvent(&event);
1603
1604         /* wait until the picture is allocated */
1605         SDL_LockMutex(is->pictq_mutex);
1606         while (!vp->allocated && !is->videoq.abort_request) {
1607             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1608         }
1609         /* if the queue is aborted, we have to pop the pending ALLOC event or wait for the allocation to complete */
1610         if (is->videoq.abort_request && SDL_PeepEvents(&event, 1, SDL_GETEVENT, SDL_EVENTMASK(FF_ALLOC_EVENT)) != 1) {
1611             while (!vp->allocated) {
1612                 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1613             }
1614         }
1615         SDL_UnlockMutex(is->pictq_mutex);
1616
1617         if (is->videoq.abort_request)
1618             return -1;
1619     }
1620
1621     /* if the frame is not skipped, then display it */
1622     if (vp->bmp) {
1623         AVPicture pict = { { 0 } };
1624
1625         /* get a pointer on the bitmap */
1626         SDL_LockYUVOverlay (vp->bmp);
1627
1628         pict.data[0] = vp->bmp->pixels[0];
1629         pict.data[1] = vp->bmp->pixels[2];
1630         pict.data[2] = vp->bmp->pixels[1];
1631
1632         pict.linesize[0] = vp->bmp->pitches[0];
1633         pict.linesize[1] = vp->bmp->pitches[2];
1634         pict.linesize[2] = vp->bmp->pitches[1];
1635
1636 #if CONFIG_AVFILTER
1637         // FIXME use direct rendering
1638         av_picture_copy(&pict, (AVPicture *)src_frame,
1639                         src_frame->format, vp->width, vp->height);
1640 #else
1641         av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1642         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1643             vp->width, vp->height, src_frame->format, vp->width, vp->height,
1644             AV_PIX_FMT_YUV420P, sws_flags, NULL, NULL, NULL);
1645         if (is->img_convert_ctx == NULL) {
1646             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
1647             exit(1);
1648         }
1649         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1650                   0, vp->height, pict.data, pict.linesize);
1651 #endif
1652         /* workaround SDL PITCH_WORKAROUND */
1653         duplicate_right_border_pixels(vp->bmp);
1654         /* update the bitmap content */
1655         SDL_UnlockYUVOverlay(vp->bmp);
1656
1657         vp->pts = pts;
1658         vp->duration = duration;
1659         vp->pos = pos;
1660         vp->serial = serial;
1661
1662         /* now we can update the picture count */
1663         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1664             is->pictq_windex = 0;
1665         SDL_LockMutex(is->pictq_mutex);
1666         is->pictq_size++;
1667         SDL_UnlockMutex(is->pictq_mutex);
1668     }
1669     return 0;
1670 }
1671
1672 static int get_video_frame(VideoState *is, AVFrame *frame, AVPacket *pkt, int *serial)
1673 {
1674     int got_picture;
1675
1676     if (packet_queue_get(&is->videoq, pkt, 1, serial) < 0)
1677         return -1;
1678
1679     if (pkt->data == flush_pkt.data) {
1680         avcodec_flush_buffers(is->video_st->codec);
1681         return 0;
1682     }
1683
1684     if(avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt) < 0)
1685         return 0;
1686
1687     if (!got_picture && !pkt->data)
1688         is->video_finished = *serial;
1689
1690     if (got_picture) {
1691         int ret = 1;
1692         double dpts = NAN;
1693
1694         if (decoder_reorder_pts == -1) {
1695             frame->pts = av_frame_get_best_effort_timestamp(frame);
1696         } else if (decoder_reorder_pts) {
1697             frame->pts = frame->pkt_pts;
1698         } else {
1699             frame->pts = frame->pkt_dts;
1700         }
1701
1702         if (frame->pts != AV_NOPTS_VALUE)
1703             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1704
1705         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1706
1707         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1708             if (frame->pts != AV_NOPTS_VALUE) {
1709                 double diff = dpts - get_master_clock(is);
1710                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1711                     diff - is->frame_last_filter_delay < 0 &&
1712                     *serial == is->vidclk.serial &&
1713                     is->videoq.nb_packets) {
1714                     is->frame_drops_early++;
1715                     av_frame_unref(frame);
1716                     ret = 0;
1717                 }
1718             }
1719         }
1720
1721         return ret;
1722     }
1723     return 0;
1724 }
1725
1726 #if CONFIG_AVFILTER
1727 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1728                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1729 {
1730     int ret;
1731     AVFilterInOut *outputs = NULL, *inputs = NULL;
1732
1733     if (filtergraph) {
1734         outputs = avfilter_inout_alloc();
1735         inputs  = avfilter_inout_alloc();
1736         if (!outputs || !inputs) {
1737             ret = AVERROR(ENOMEM);
1738             goto fail;
1739         }
1740
1741         outputs->name       = av_strdup("in");
1742         outputs->filter_ctx = source_ctx;
1743         outputs->pad_idx    = 0;
1744         outputs->next       = NULL;
1745
1746         inputs->name        = av_strdup("out");
1747         inputs->filter_ctx  = sink_ctx;
1748         inputs->pad_idx     = 0;
1749         inputs->next        = NULL;
1750
1751         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1752             goto fail;
1753     } else {
1754         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1755             goto fail;
1756     }
1757
1758     ret = avfilter_graph_config(graph, NULL);
1759 fail:
1760     avfilter_inout_free(&outputs);
1761     avfilter_inout_free(&inputs);
1762     return ret;
1763 }
1764
1765 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1766 {
1767     static const enum AVPixelFormat pix_fmts[] = { AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE };
1768     char sws_flags_str[128];
1769     char buffersrc_args[256];
1770     int ret;
1771     AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_crop;
1772     AVCodecContext *codec = is->video_st->codec;
1773     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1774
1775     av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1776     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1777     graph->scale_sws_opts = av_strdup(sws_flags_str);
1778
1779     snprintf(buffersrc_args, sizeof(buffersrc_args),
1780              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1781              frame->width, frame->height, frame->format,
1782              is->video_st->time_base.num, is->video_st->time_base.den,
1783              codec->sample_aspect_ratio.num, FFMAX(codec->sample_aspect_ratio.den, 1));
1784     if (fr.num && fr.den)
1785         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1786
1787     if ((ret = avfilter_graph_create_filter(&filt_src,
1788                                             avfilter_get_by_name("buffer"),
1789                                             "ffplay_buffer", buffersrc_args, NULL,
1790                                             graph)) < 0)
1791         goto fail;
1792
1793     ret = avfilter_graph_create_filter(&filt_out,
1794                                        avfilter_get_by_name("buffersink"),
1795                                        "ffplay_buffersink", NULL, NULL, graph);
1796     if (ret < 0)
1797         goto fail;
1798
1799     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1800         goto fail;
1801
1802     /* SDL YUV code is not handling odd width/height for some driver
1803      * combinations, therefore we crop the picture to an even width/height. */
1804     if ((ret = avfilter_graph_create_filter(&filt_crop,
1805                                             avfilter_get_by_name("crop"),
1806                                             "ffplay_crop", "floor(in_w/2)*2:floor(in_h/2)*2", NULL, graph)) < 0)
1807         goto fail;
1808     if ((ret = avfilter_link(filt_crop, 0, filt_out, 0)) < 0)
1809         goto fail;
1810
1811     if ((ret = configure_filtergraph(graph, vfilters, filt_src, filt_crop)) < 0)
1812         goto fail;
1813
1814     is->in_video_filter  = filt_src;
1815     is->out_video_filter = filt_out;
1816
1817 fail:
1818     return ret;
1819 }
1820
1821 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
1822 {
1823     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
1824     int sample_rates[2] = { 0, -1 };
1825     int64_t channel_layouts[2] = { 0, -1 };
1826     int channels[2] = { 0, -1 };
1827     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
1828     char aresample_swr_opts[512] = "";
1829     AVDictionaryEntry *e = NULL;
1830     char asrc_args[256];
1831     int ret;
1832
1833     avfilter_graph_free(&is->agraph);
1834     if (!(is->agraph = avfilter_graph_alloc()))
1835         return AVERROR(ENOMEM);
1836
1837     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
1838         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
1839     if (strlen(aresample_swr_opts))
1840         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
1841     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
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     double duration;
1905     int ret;
1906     int serial = 0;
1907     AVRational tb = is->video_st->time_base;
1908     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
1909
1910 #if CONFIG_AVFILTER
1911     AVFilterGraph *graph = avfilter_graph_alloc();
1912     AVFilterContext *filt_out = NULL, *filt_in = NULL;
1913     int last_w = 0;
1914     int last_h = 0;
1915     enum AVPixelFormat last_format = -2;
1916     int last_serial = -1;
1917 #endif
1918
1919     for (;;) {
1920         while (is->paused && !is->videoq.abort_request)
1921             SDL_Delay(10);
1922
1923         avcodec_get_frame_defaults(frame);
1924         av_free_packet(&pkt);
1925
1926         ret = get_video_frame(is, frame, &pkt, &serial);
1927         if (ret < 0)
1928             goto the_end;
1929         if (!ret)
1930             continue;
1931
1932 #if CONFIG_AVFILTER
1933         if (   last_w != frame->width
1934             || last_h != frame->height
1935             || last_format != frame->format
1936             || last_serial != serial) {
1937             av_log(NULL, AV_LOG_DEBUG,
1938                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
1939                    last_w, last_h,
1940                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
1941                    frame->width, frame->height,
1942                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), serial);
1943             avfilter_graph_free(&graph);
1944             graph = avfilter_graph_alloc();
1945             if ((ret = configure_video_filters(graph, is, vfilters, frame)) < 0) {
1946                 SDL_Event event;
1947                 event.type = FF_QUIT_EVENT;
1948                 event.user.data1 = is;
1949                 SDL_PushEvent(&event);
1950                 av_free_packet(&pkt);
1951                 goto the_end;
1952             }
1953             filt_in  = is->in_video_filter;
1954             filt_out = is->out_video_filter;
1955             last_w = frame->width;
1956             last_h = frame->height;
1957             last_format = frame->format;
1958             last_serial = serial;
1959             frame_rate = filt_out->inputs[0]->frame_rate;
1960         }
1961
1962         ret = av_buffersrc_add_frame(filt_in, frame);
1963         if (ret < 0)
1964             goto the_end;
1965         av_frame_unref(frame);
1966         avcodec_get_frame_defaults(frame);
1967         av_free_packet(&pkt);
1968
1969         while (ret >= 0) {
1970             is->frame_last_returned_time = av_gettime() / 1000000.0;
1971
1972             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
1973             if (ret < 0) {
1974                 if (ret == AVERROR_EOF)
1975                     is->video_finished = serial;
1976                 ret = 0;
1977                 break;
1978             }
1979
1980             is->frame_last_filter_delay = av_gettime() / 1000000.0 - is->frame_last_returned_time;
1981             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
1982                 is->frame_last_filter_delay = 0;
1983             tb = filt_out->inputs[0]->time_base;
1984 #endif
1985             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
1986             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
1987             ret = queue_picture(is, frame, pts, duration, av_frame_get_pkt_pos(frame), serial);
1988             av_frame_unref(frame);
1989 #if CONFIG_AVFILTER
1990         }
1991 #endif
1992
1993         if (ret < 0)
1994             goto the_end;
1995     }
1996  the_end:
1997 #if CONFIG_AVFILTER
1998     avfilter_graph_free(&graph);
1999 #endif
2000     av_free_packet(&pkt);
2001     av_frame_free(&frame);
2002     return 0;
2003 }
2004
2005 static int subtitle_thread(void *arg)
2006 {
2007     VideoState *is = arg;
2008     SubPicture *sp;
2009     AVPacket pkt1, *pkt = &pkt1;
2010     int got_subtitle;
2011     int serial;
2012     double pts;
2013     int i, j;
2014     int r, g, b, y, u, v, a;
2015
2016     for (;;) {
2017         while (is->paused && !is->subtitleq.abort_request) {
2018             SDL_Delay(10);
2019         }
2020         if (packet_queue_get(&is->subtitleq, pkt, 1, &serial) < 0)
2021             break;
2022
2023         if (pkt->data == flush_pkt.data) {
2024             avcodec_flush_buffers(is->subtitle_st->codec);
2025             continue;
2026         }
2027         SDL_LockMutex(is->subpq_mutex);
2028         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
2029                !is->subtitleq.abort_request) {
2030             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
2031         }
2032         SDL_UnlockMutex(is->subpq_mutex);
2033
2034         if (is->subtitleq.abort_request)
2035             return 0;
2036
2037         sp = &is->subpq[is->subpq_windex];
2038
2039        /* NOTE: ipts is the PTS of the _first_ picture beginning in
2040            this packet, if any */
2041         pts = 0;
2042         if (pkt->pts != AV_NOPTS_VALUE)
2043             pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
2044
2045         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
2046                                  &got_subtitle, pkt);
2047         if (got_subtitle && sp->sub.format == 0) {
2048             if (sp->sub.pts != AV_NOPTS_VALUE)
2049                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2050             sp->pts = pts;
2051             sp->serial = serial;
2052
2053             for (i = 0; i < sp->sub.num_rects; i++)
2054             {
2055                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
2056                 {
2057                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
2058                     y = RGB_TO_Y_CCIR(r, g, b);
2059                     u = RGB_TO_U_CCIR(r, g, b, 0);
2060                     v = RGB_TO_V_CCIR(r, g, b, 0);
2061                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
2062                 }
2063             }
2064
2065             /* now we can update the picture count */
2066             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
2067                 is->subpq_windex = 0;
2068             SDL_LockMutex(is->subpq_mutex);
2069             is->subpq_size++;
2070             SDL_UnlockMutex(is->subpq_mutex);
2071         } else if (got_subtitle) {
2072             avsubtitle_free(&sp->sub);
2073         }
2074         av_free_packet(pkt);
2075     }
2076     return 0;
2077 }
2078
2079 /* copy samples for viewing in editor window */
2080 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2081 {
2082     int size, len;
2083
2084     size = samples_size / sizeof(short);
2085     while (size > 0) {
2086         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2087         if (len > size)
2088             len = size;
2089         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2090         samples += len;
2091         is->sample_array_index += len;
2092         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2093             is->sample_array_index = 0;
2094         size -= len;
2095     }
2096 }
2097
2098 /* return the wanted number of samples to get better sync if sync_type is video
2099  * or external master clock */
2100 static int synchronize_audio(VideoState *is, int nb_samples)
2101 {
2102     int wanted_nb_samples = nb_samples;
2103
2104     /* if not master, then we try to remove or add samples to correct the clock */
2105     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2106         double diff, avg_diff;
2107         int min_nb_samples, max_nb_samples;
2108
2109         diff = get_clock(&is->audclk) - get_master_clock(is);
2110
2111         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2112             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2113             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2114                 /* not enough measures to have a correct estimate */
2115                 is->audio_diff_avg_count++;
2116             } else {
2117                 /* estimate the A-V difference */
2118                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2119
2120                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2121                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2122                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2123                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2124                     wanted_nb_samples = FFMIN(FFMAX(wanted_nb_samples, min_nb_samples), max_nb_samples);
2125                 }
2126                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2127                         diff, avg_diff, wanted_nb_samples - nb_samples,
2128                         is->audio_clock, is->audio_diff_threshold);
2129             }
2130         } else {
2131             /* too big difference : may be initial PTS errors, so
2132                reset A-V filter */
2133             is->audio_diff_avg_count = 0;
2134             is->audio_diff_cum       = 0;
2135         }
2136     }
2137
2138     return wanted_nb_samples;
2139 }
2140
2141 /**
2142  * Decode one audio frame and return its uncompressed size.
2143  *
2144  * The processed audio frame is decoded, converted if required, and
2145  * stored in is->audio_buf, with size in bytes given by the return
2146  * value.
2147  */
2148 static int audio_decode_frame(VideoState *is)
2149 {
2150     AVPacket *pkt_temp = &is->audio_pkt_temp;
2151     AVPacket *pkt = &is->audio_pkt;
2152     AVCodecContext *dec = is->audio_st->codec;
2153     int len1, data_size, resampled_data_size;
2154     int64_t dec_channel_layout;
2155     int got_frame;
2156     av_unused double audio_clock0;
2157     int wanted_nb_samples;
2158     AVRational tb;
2159     int ret;
2160     int reconfigure;
2161
2162     for (;;) {
2163         /* NOTE: the audio packet can contain several frames */
2164         while (pkt_temp->stream_index != -1 || is->audio_buf_frames_pending) {
2165             if (!is->frame) {
2166                 if (!(is->frame = av_frame_alloc()))
2167                     return AVERROR(ENOMEM);
2168             } else {
2169                 av_frame_unref(is->frame);
2170             }
2171
2172             if (is->audioq.serial != is->audio_pkt_temp_serial)
2173                 break;
2174
2175             if (is->paused)
2176                 return -1;
2177
2178             if (!is->audio_buf_frames_pending) {
2179                 len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
2180                 if (len1 < 0) {
2181                     /* if error, we skip the frame */
2182                     pkt_temp->size = 0;
2183                     break;
2184                 }
2185
2186                 pkt_temp->dts =
2187                 pkt_temp->pts = AV_NOPTS_VALUE;
2188                 pkt_temp->data += len1;
2189                 pkt_temp->size -= len1;
2190                 if (pkt_temp->data && pkt_temp->size <= 0 || !pkt_temp->data && !got_frame)
2191                     pkt_temp->stream_index = -1;
2192                 if (!pkt_temp->data && !got_frame)
2193                     is->audio_finished = is->audio_pkt_temp_serial;
2194
2195                 if (!got_frame)
2196                     continue;
2197
2198                 tb = (AVRational){1, is->frame->sample_rate};
2199                 if (is->frame->pts != AV_NOPTS_VALUE)
2200                     is->frame->pts = av_rescale_q(is->frame->pts, dec->time_base, tb);
2201                 else if (is->frame->pkt_pts != AV_NOPTS_VALUE)
2202                     is->frame->pts = av_rescale_q(is->frame->pkt_pts, is->audio_st->time_base, tb);
2203                 else if (is->audio_frame_next_pts != AV_NOPTS_VALUE)
2204 #if CONFIG_AVFILTER
2205                     is->frame->pts = av_rescale_q(is->audio_frame_next_pts, (AVRational){1, is->audio_filter_src.freq}, tb);
2206 #else
2207                     is->frame->pts = av_rescale_q(is->audio_frame_next_pts, (AVRational){1, is->audio_src.freq}, tb);
2208 #endif
2209
2210                 if (is->frame->pts != AV_NOPTS_VALUE)
2211                     is->audio_frame_next_pts = is->frame->pts + is->frame->nb_samples;
2212
2213 #if CONFIG_AVFILTER
2214                 dec_channel_layout = get_valid_channel_layout(is->frame->channel_layout, av_frame_get_channels(is->frame));
2215
2216                 reconfigure =
2217                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2218                                    is->frame->format, av_frame_get_channels(is->frame))    ||
2219                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2220                     is->audio_filter_src.freq           != is->frame->sample_rate ||
2221                     is->audio_pkt_temp_serial           != is->audio_last_serial;
2222
2223                 if (reconfigure) {
2224                     char buf1[1024], buf2[1024];
2225                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2226                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2227                     av_log(NULL, AV_LOG_DEBUG,
2228                            "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",
2229                            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,
2230                            is->frame->sample_rate, av_frame_get_channels(is->frame), av_get_sample_fmt_name(is->frame->format), buf2, is->audio_pkt_temp_serial);
2231
2232                     is->audio_filter_src.fmt            = is->frame->format;
2233                     is->audio_filter_src.channels       = av_frame_get_channels(is->frame);
2234                     is->audio_filter_src.channel_layout = dec_channel_layout;
2235                     is->audio_filter_src.freq           = is->frame->sample_rate;
2236                     is->audio_last_serial               = is->audio_pkt_temp_serial;
2237
2238                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2239                         return ret;
2240                 }
2241
2242                 if ((ret = av_buffersrc_add_frame(is->in_audio_filter, is->frame)) < 0)
2243                     return ret;
2244                 av_frame_unref(is->frame);
2245 #endif
2246             }
2247 #if CONFIG_AVFILTER
2248             if ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, is->frame, 0)) < 0) {
2249                 if (ret == AVERROR(EAGAIN)) {
2250                     is->audio_buf_frames_pending = 0;
2251                     continue;
2252                 }
2253                 if (ret == AVERROR_EOF)
2254                     is->audio_finished = is->audio_pkt_temp_serial;
2255                 return ret;
2256             }
2257             is->audio_buf_frames_pending = 1;
2258             tb = is->out_audio_filter->inputs[0]->time_base;
2259 #endif
2260
2261             data_size = av_samples_get_buffer_size(NULL, av_frame_get_channels(is->frame),
2262                                                    is->frame->nb_samples,
2263                                                    is->frame->format, 1);
2264
2265             dec_channel_layout =
2266                 (is->frame->channel_layout && av_frame_get_channels(is->frame) == av_get_channel_layout_nb_channels(is->frame->channel_layout)) ?
2267                 is->frame->channel_layout : av_get_default_channel_layout(av_frame_get_channels(is->frame));
2268             wanted_nb_samples = synchronize_audio(is, is->frame->nb_samples);
2269
2270             if (is->frame->format        != is->audio_src.fmt            ||
2271                 dec_channel_layout       != is->audio_src.channel_layout ||
2272                 is->frame->sample_rate   != is->audio_src.freq           ||
2273                 (wanted_nb_samples       != is->frame->nb_samples && !is->swr_ctx)) {
2274                 swr_free(&is->swr_ctx);
2275                 is->swr_ctx = swr_alloc_set_opts(NULL,
2276                                                  is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2277                                                  dec_channel_layout,           is->frame->format, is->frame->sample_rate,
2278                                                  0, NULL);
2279                 if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2280                     av_log(NULL, AV_LOG_ERROR,
2281                            "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2282                             is->frame->sample_rate, av_get_sample_fmt_name(is->frame->format), av_frame_get_channels(is->frame),
2283                             is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2284                     break;
2285                 }
2286                 is->audio_src.channel_layout = dec_channel_layout;
2287                 is->audio_src.channels       = av_frame_get_channels(is->frame);
2288                 is->audio_src.freq = is->frame->sample_rate;
2289                 is->audio_src.fmt = is->frame->format;
2290             }
2291
2292             if (is->swr_ctx) {
2293                 const uint8_t **in = (const uint8_t **)is->frame->extended_data;
2294                 uint8_t **out = &is->audio_buf1;
2295                 int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate + 256;
2296                 int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2297                 int len2;
2298                 if (out_size < 0) {
2299                     av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2300                     break;
2301                 }
2302                 if (wanted_nb_samples != is->frame->nb_samples) {
2303                     if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - is->frame->nb_samples) * is->audio_tgt.freq / is->frame->sample_rate,
2304                                                 wanted_nb_samples * is->audio_tgt.freq / is->frame->sample_rate) < 0) {
2305                         av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2306                         break;
2307                     }
2308                 }
2309                 av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2310                 if (!is->audio_buf1)
2311                     return AVERROR(ENOMEM);
2312                 len2 = swr_convert(is->swr_ctx, out, out_count, in, is->frame->nb_samples);
2313                 if (len2 < 0) {
2314                     av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2315                     break;
2316                 }
2317                 if (len2 == out_count) {
2318                     av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2319                     swr_init(is->swr_ctx);
2320                 }
2321                 is->audio_buf = is->audio_buf1;
2322                 resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2323             } else {
2324                 is->audio_buf = is->frame->data[0];
2325                 resampled_data_size = data_size;
2326             }
2327
2328             audio_clock0 = is->audio_clock;
2329             /* update the audio clock with the pts */
2330             if (is->frame->pts != AV_NOPTS_VALUE)
2331                 is->audio_clock = is->frame->pts * av_q2d(tb) + (double) is->frame->nb_samples / is->frame->sample_rate;
2332             else
2333                 is->audio_clock = NAN;
2334             is->audio_clock_serial = is->audio_pkt_temp_serial;
2335 #ifdef DEBUG
2336             {
2337                 static double last_clock;
2338                 printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2339                        is->audio_clock - last_clock,
2340                        is->audio_clock, audio_clock0);
2341                 last_clock = is->audio_clock;
2342             }
2343 #endif
2344             return resampled_data_size;
2345         }
2346
2347         /* free the current packet */
2348         if (pkt->data)
2349             av_free_packet(pkt);
2350         memset(pkt_temp, 0, sizeof(*pkt_temp));
2351         pkt_temp->stream_index = -1;
2352
2353         if (is->audioq.abort_request) {
2354             return -1;
2355         }
2356
2357         if (is->audioq.nb_packets == 0)
2358             SDL_CondSignal(is->continue_read_thread);
2359
2360         /* read next packet */
2361         if ((packet_queue_get(&is->audioq, pkt, 1, &is->audio_pkt_temp_serial)) < 0)
2362             return -1;
2363
2364         if (pkt->data == flush_pkt.data) {
2365             avcodec_flush_buffers(dec);
2366             is->audio_buf_frames_pending = 0;
2367             is->audio_frame_next_pts = AV_NOPTS_VALUE;
2368             if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek)
2369                 is->audio_frame_next_pts = is->audio_st->start_time;
2370         }
2371
2372         *pkt_temp = *pkt;
2373     }
2374 }
2375
2376 /* prepare a new audio buffer */
2377 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2378 {
2379     VideoState *is = opaque;
2380     int audio_size, len1;
2381     int bytes_per_sec;
2382     int frame_size = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, 1, is->audio_tgt.fmt, 1);
2383
2384     audio_callback_time = av_gettime();
2385
2386     while (len > 0) {
2387         if (is->audio_buf_index >= is->audio_buf_size) {
2388            audio_size = audio_decode_frame(is);
2389            if (audio_size < 0) {
2390                 /* if error, just output silence */
2391                is->audio_buf      = is->silence_buf;
2392                is->audio_buf_size = sizeof(is->silence_buf) / frame_size * frame_size;
2393            } else {
2394                if (is->show_mode != SHOW_MODE_VIDEO)
2395                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2396                is->audio_buf_size = audio_size;
2397            }
2398            is->audio_buf_index = 0;
2399         }
2400         len1 = is->audio_buf_size - is->audio_buf_index;
2401         if (len1 > len)
2402             len1 = len;
2403         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2404         len -= len1;
2405         stream += len1;
2406         is->audio_buf_index += len1;
2407     }
2408     bytes_per_sec = is->audio_tgt.freq * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2409     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2410     /* Let's assume the audio driver that is used by SDL has two periods. */
2411     if (!isnan(is->audio_clock)) {
2412         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);
2413         sync_clock_to_slave(&is->extclk, &is->audclk);
2414     }
2415 }
2416
2417 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2418 {
2419     SDL_AudioSpec wanted_spec, spec;
2420     const char *env;
2421     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2422
2423     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2424     if (env) {
2425         wanted_nb_channels = atoi(env);
2426         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2427     }
2428     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2429         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2430         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2431     }
2432     wanted_spec.channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2433     wanted_spec.freq = wanted_sample_rate;
2434     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2435         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2436         return -1;
2437     }
2438     wanted_spec.format = AUDIO_S16SYS;
2439     wanted_spec.silence = 0;
2440     wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2441     wanted_spec.callback = sdl_audio_callback;
2442     wanted_spec.userdata = opaque;
2443     while (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2444         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels): %s\n", wanted_spec.channels, SDL_GetError());
2445         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2446         if (!wanted_spec.channels) {
2447             av_log(NULL, AV_LOG_ERROR,
2448                    "No more channel combinations to try, audio open failed\n");
2449             return -1;
2450         }
2451         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2452     }
2453     if (spec.format != AUDIO_S16SYS) {
2454         av_log(NULL, AV_LOG_ERROR,
2455                "SDL advised audio format %d is not supported!\n", spec.format);
2456         return -1;
2457     }
2458     if (spec.channels != wanted_spec.channels) {
2459         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2460         if (!wanted_channel_layout) {
2461             av_log(NULL, AV_LOG_ERROR,
2462                    "SDL advised channel count %d is not supported!\n", spec.channels);
2463             return -1;
2464         }
2465     }
2466
2467     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2468     audio_hw_params->freq = spec.freq;
2469     audio_hw_params->channel_layout = wanted_channel_layout;
2470     audio_hw_params->channels =  spec.channels;
2471     return spec.size;
2472 }
2473
2474 /* open a given stream. Return 0 if OK */
2475 static int stream_component_open(VideoState *is, int stream_index)
2476 {
2477     AVFormatContext *ic = is->ic;
2478     AVCodecContext *avctx;
2479     AVCodec *codec;
2480     const char *forced_codec_name = NULL;
2481     AVDictionary *opts;
2482     AVDictionaryEntry *t = NULL;
2483     int sample_rate, nb_channels;
2484     int64_t channel_layout;
2485     int ret;
2486     int stream_lowres = lowres;
2487
2488     if (stream_index < 0 || stream_index >= ic->nb_streams)
2489         return -1;
2490     avctx = ic->streams[stream_index]->codec;
2491
2492     codec = avcodec_find_decoder(avctx->codec_id);
2493
2494     switch(avctx->codec_type){
2495         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2496         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2497         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2498     }
2499     if (forced_codec_name)
2500         codec = avcodec_find_decoder_by_name(forced_codec_name);
2501     if (!codec) {
2502         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2503                                       "No codec could be found with name '%s'\n", forced_codec_name);
2504         else                   av_log(NULL, AV_LOG_WARNING,
2505                                       "No codec could be found with id %d\n", avctx->codec_id);
2506         return -1;
2507     }
2508
2509     avctx->codec_id = codec->id;
2510     avctx->workaround_bugs   = workaround_bugs;
2511     if(stream_lowres > av_codec_get_max_lowres(codec)){
2512         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2513                 av_codec_get_max_lowres(codec));
2514         stream_lowres = av_codec_get_max_lowres(codec);
2515     }
2516     av_codec_set_lowres(avctx, stream_lowres);
2517     avctx->error_concealment = error_concealment;
2518
2519     if(stream_lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
2520     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2521     if(codec->capabilities & CODEC_CAP_DR1)
2522         avctx->flags |= CODEC_FLAG_EMU_EDGE;
2523
2524     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2525     if (!av_dict_get(opts, "threads", NULL, 0))
2526         av_dict_set(&opts, "threads", "auto", 0);
2527     if (stream_lowres)
2528         av_dict_set(&opts, "lowres", av_asprintf("%d", stream_lowres), AV_DICT_DONT_STRDUP_VAL);
2529     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2530         av_dict_set(&opts, "refcounted_frames", "1", 0);
2531     if (avcodec_open2(avctx, codec, &opts) < 0)
2532         return -1;
2533     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2534         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2535         return AVERROR_OPTION_NOT_FOUND;
2536     }
2537
2538     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2539     switch (avctx->codec_type) {
2540     case AVMEDIA_TYPE_AUDIO:
2541 #if CONFIG_AVFILTER
2542         {
2543             AVFilterLink *link;
2544
2545             is->audio_filter_src.freq           = avctx->sample_rate;
2546             is->audio_filter_src.channels       = avctx->channels;
2547             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2548             is->audio_filter_src.fmt            = avctx->sample_fmt;
2549             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2550                 return ret;
2551             link = is->out_audio_filter->inputs[0];
2552             sample_rate    = link->sample_rate;
2553             nb_channels    = link->channels;
2554             channel_layout = link->channel_layout;
2555         }
2556 #else
2557         sample_rate    = avctx->sample_rate;
2558         nb_channels    = avctx->channels;
2559         channel_layout = avctx->channel_layout;
2560 #endif
2561
2562         /* prepare audio output */
2563         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2564             return ret;
2565         is->audio_hw_buf_size = ret;
2566         is->audio_src = is->audio_tgt;
2567         is->audio_buf_size  = 0;
2568         is->audio_buf_index = 0;
2569
2570         /* init averaging filter */
2571         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2572         is->audio_diff_avg_count = 0;
2573         /* since we do not have a precise anough audio fifo fullness,
2574            we correct audio sync only if larger than this threshold */
2575         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);
2576
2577         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2578         memset(&is->audio_pkt_temp, 0, sizeof(is->audio_pkt_temp));
2579         is->audio_pkt_temp.stream_index = -1;
2580
2581         is->audio_stream = stream_index;
2582         is->audio_st = ic->streams[stream_index];
2583
2584         packet_queue_start(&is->audioq);
2585         SDL_PauseAudio(0);
2586         break;
2587     case AVMEDIA_TYPE_VIDEO:
2588         is->video_stream = stream_index;
2589         is->video_st = ic->streams[stream_index];
2590
2591         packet_queue_start(&is->videoq);
2592         is->video_tid = SDL_CreateThread(video_thread, is);
2593         is->queue_attachments_req = 1;
2594         break;
2595     case AVMEDIA_TYPE_SUBTITLE:
2596         is->subtitle_stream = stream_index;
2597         is->subtitle_st = ic->streams[stream_index];
2598         packet_queue_start(&is->subtitleq);
2599
2600         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2601         break;
2602     default:
2603         break;
2604     }
2605     return 0;
2606 }
2607
2608 static void stream_component_close(VideoState *is, int stream_index)
2609 {
2610     AVFormatContext *ic = is->ic;
2611     AVCodecContext *avctx;
2612
2613     if (stream_index < 0 || stream_index >= ic->nb_streams)
2614         return;
2615     avctx = ic->streams[stream_index]->codec;
2616
2617     switch (avctx->codec_type) {
2618     case AVMEDIA_TYPE_AUDIO:
2619         packet_queue_abort(&is->audioq);
2620
2621         SDL_CloseAudio();
2622
2623         packet_queue_flush(&is->audioq);
2624         av_free_packet(&is->audio_pkt);
2625         swr_free(&is->swr_ctx);
2626         av_freep(&is->audio_buf1);
2627         is->audio_buf1_size = 0;
2628         is->audio_buf = NULL;
2629         av_frame_free(&is->frame);
2630
2631         if (is->rdft) {
2632             av_rdft_end(is->rdft);
2633             av_freep(&is->rdft_data);
2634             is->rdft = NULL;
2635             is->rdft_bits = 0;
2636         }
2637 #if CONFIG_AVFILTER
2638         avfilter_graph_free(&is->agraph);
2639 #endif
2640         break;
2641     case AVMEDIA_TYPE_VIDEO:
2642         packet_queue_abort(&is->videoq);
2643
2644         /* note: we also signal this mutex to make sure we deblock the
2645            video thread in all cases */
2646         SDL_LockMutex(is->pictq_mutex);
2647         SDL_CondSignal(is->pictq_cond);
2648         SDL_UnlockMutex(is->pictq_mutex);
2649
2650         SDL_WaitThread(is->video_tid, NULL);
2651
2652         packet_queue_flush(&is->videoq);
2653         break;
2654     case AVMEDIA_TYPE_SUBTITLE:
2655         packet_queue_abort(&is->subtitleq);
2656
2657         /* note: we also signal this mutex to make sure we deblock the
2658            video thread in all cases */
2659         SDL_LockMutex(is->subpq_mutex);
2660         SDL_CondSignal(is->subpq_cond);
2661         SDL_UnlockMutex(is->subpq_mutex);
2662
2663         SDL_WaitThread(is->subtitle_tid, NULL);
2664
2665         packet_queue_flush(&is->subtitleq);
2666         break;
2667     default:
2668         break;
2669     }
2670
2671     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2672     avcodec_close(avctx);
2673     switch (avctx->codec_type) {
2674     case AVMEDIA_TYPE_AUDIO:
2675         is->audio_st = NULL;
2676         is->audio_stream = -1;
2677         break;
2678     case AVMEDIA_TYPE_VIDEO:
2679         is->video_st = NULL;
2680         is->video_stream = -1;
2681         break;
2682     case AVMEDIA_TYPE_SUBTITLE:
2683         is->subtitle_st = NULL;
2684         is->subtitle_stream = -1;
2685         break;
2686     default:
2687         break;
2688     }
2689 }
2690
2691 static int decode_interrupt_cb(void *ctx)
2692 {
2693     VideoState *is = ctx;
2694     return is->abort_request;
2695 }
2696
2697 static int is_realtime(AVFormatContext *s)
2698 {
2699     if(   !strcmp(s->iformat->name, "rtp")
2700        || !strcmp(s->iformat->name, "rtsp")
2701        || !strcmp(s->iformat->name, "sdp")
2702     )
2703         return 1;
2704
2705     if(s->pb && (   !strncmp(s->filename, "rtp:", 4)
2706                  || !strncmp(s->filename, "udp:", 4)
2707                 )
2708     )
2709         return 1;
2710     return 0;
2711 }
2712
2713 /* this thread gets the stream from the disk or the network */
2714 static int read_thread(void *arg)
2715 {
2716     VideoState *is = arg;
2717     AVFormatContext *ic = NULL;
2718     int err, i, ret;
2719     int st_index[AVMEDIA_TYPE_NB];
2720     AVPacket pkt1, *pkt = &pkt1;
2721     int eof = 0;
2722     int64_t stream_start_time;
2723     int pkt_in_play_range = 0;
2724     AVDictionaryEntry *t;
2725     AVDictionary **opts;
2726     int orig_nb_streams;
2727     SDL_mutex *wait_mutex = SDL_CreateMutex();
2728
2729     memset(st_index, -1, sizeof(st_index));
2730     is->last_video_stream = is->video_stream = -1;
2731     is->last_audio_stream = is->audio_stream = -1;
2732     is->last_subtitle_stream = is->subtitle_stream = -1;
2733
2734     ic = avformat_alloc_context();
2735     ic->interrupt_callback.callback = decode_interrupt_cb;
2736     ic->interrupt_callback.opaque = is;
2737     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2738     if (err < 0) {
2739         print_error(is->filename, err);
2740         ret = -1;
2741         goto fail;
2742     }
2743     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2744         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2745         ret = AVERROR_OPTION_NOT_FOUND;
2746         goto fail;
2747     }
2748     is->ic = ic;
2749
2750     if (genpts)
2751         ic->flags |= AVFMT_FLAG_GENPTS;
2752
2753     opts = setup_find_stream_info_opts(ic, codec_opts);
2754     orig_nb_streams = ic->nb_streams;
2755
2756     err = avformat_find_stream_info(ic, opts);
2757     if (err < 0) {
2758         av_log(NULL, AV_LOG_WARNING,
2759                "%s: could not find codec parameters\n", is->filename);
2760         ret = -1;
2761         goto fail;
2762     }
2763     for (i = 0; i < orig_nb_streams; i++)
2764         av_dict_free(&opts[i]);
2765     av_freep(&opts);
2766
2767     if (ic->pb)
2768         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use url_feof() to test for the end
2769
2770     if (seek_by_bytes < 0)
2771         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2772
2773     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2774
2775     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2776         window_title = av_asprintf("%s - %s", t->value, input_filename);
2777
2778     /* if seeking requested, we execute it */
2779     if (start_time != AV_NOPTS_VALUE) {
2780         int64_t timestamp;
2781
2782         timestamp = start_time;
2783         /* add the stream start time */
2784         if (ic->start_time != AV_NOPTS_VALUE)
2785             timestamp += ic->start_time;
2786         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2787         if (ret < 0) {
2788             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2789                     is->filename, (double)timestamp / AV_TIME_BASE);
2790         }
2791     }
2792
2793     is->realtime = is_realtime(ic);
2794
2795     for (i = 0; i < ic->nb_streams; i++)
2796         ic->streams[i]->discard = AVDISCARD_ALL;
2797     if (!video_disable)
2798         st_index[AVMEDIA_TYPE_VIDEO] =
2799             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2800                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2801     if (!audio_disable)
2802         st_index[AVMEDIA_TYPE_AUDIO] =
2803             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2804                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2805                                 st_index[AVMEDIA_TYPE_VIDEO],
2806                                 NULL, 0);
2807     if (!video_disable && !subtitle_disable)
2808         st_index[AVMEDIA_TYPE_SUBTITLE] =
2809             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2810                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2811                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2812                                  st_index[AVMEDIA_TYPE_AUDIO] :
2813                                  st_index[AVMEDIA_TYPE_VIDEO]),
2814                                 NULL, 0);
2815     if (show_status) {
2816         av_dump_format(ic, 0, is->filename, 0);
2817     }
2818
2819     is->show_mode = show_mode;
2820     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2821         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
2822         AVCodecContext *avctx = st->codec;
2823         VideoPicture vp = {.width = avctx->width, .height = avctx->height, .sar = av_guess_sample_aspect_ratio(ic, st, NULL)};
2824         if (vp.width)
2825             set_default_window_size(&vp);
2826     }
2827
2828     /* open the streams */
2829     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2830         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2831     }
2832
2833     ret = -1;
2834     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2835         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2836     }
2837     if (is->show_mode == SHOW_MODE_NONE)
2838         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2839
2840     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2841         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2842     }
2843
2844     if (is->video_stream < 0 && is->audio_stream < 0) {
2845         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
2846                is->filename);
2847         ret = -1;
2848         goto fail;
2849     }
2850
2851     if (infinite_buffer < 0 && is->realtime)
2852         infinite_buffer = 1;
2853
2854     for (;;) {
2855         if (is->abort_request)
2856             break;
2857         if (is->paused != is->last_paused) {
2858             is->last_paused = is->paused;
2859             if (is->paused)
2860                 is->read_pause_return = av_read_pause(ic);
2861             else
2862                 av_read_play(ic);
2863         }
2864 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2865         if (is->paused &&
2866                 (!strcmp(ic->iformat->name, "rtsp") ||
2867                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2868             /* wait 10 ms to avoid trying to get another packet */
2869             /* XXX: horrible */
2870             SDL_Delay(10);
2871             continue;
2872         }
2873 #endif
2874         if (is->seek_req) {
2875             int64_t seek_target = is->seek_pos;
2876             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2877             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2878 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2879 //      of the seek_pos/seek_rel variables
2880
2881             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2882             if (ret < 0) {
2883                 av_log(NULL, AV_LOG_ERROR,
2884                        "%s: error while seeking\n", is->ic->filename);
2885             } else {
2886                 if (is->audio_stream >= 0) {
2887                     packet_queue_flush(&is->audioq);
2888                     packet_queue_put(&is->audioq, &flush_pkt);
2889                 }
2890                 if (is->subtitle_stream >= 0) {
2891                     packet_queue_flush(&is->subtitleq);
2892                     packet_queue_put(&is->subtitleq, &flush_pkt);
2893                 }
2894                 if (is->video_stream >= 0) {
2895                     packet_queue_flush(&is->videoq);
2896                     packet_queue_put(&is->videoq, &flush_pkt);
2897                 }
2898                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
2899                    set_clock(&is->extclk, NAN, 0);
2900                 } else {
2901                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
2902                 }
2903             }
2904             is->seek_req = 0;
2905             is->queue_attachments_req = 1;
2906             eof = 0;
2907             if (is->paused)
2908                 step_to_next_frame(is);
2909         }
2910         if (is->queue_attachments_req) {
2911             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
2912                 AVPacket copy;
2913                 if ((ret = av_copy_packet(&copy, &is->video_st->attached_pic)) < 0)
2914                     goto fail;
2915                 packet_queue_put(&is->videoq, &copy);
2916                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2917             }
2918             is->queue_attachments_req = 0;
2919         }
2920
2921         /* if the queue are full, no need to read more */
2922         if (infinite_buffer<1 &&
2923               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2924             || (   (is->audioq   .nb_packets > MIN_FRAMES || is->audio_stream < 0 || is->audioq.abort_request)
2925                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0 || is->videoq.abort_request
2926                     || (is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC))
2927                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0 || is->subtitleq.abort_request)))) {
2928             /* wait 10 ms */
2929             SDL_LockMutex(wait_mutex);
2930             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
2931             SDL_UnlockMutex(wait_mutex);
2932             continue;
2933         }
2934         if (!is->paused &&
2935             (!is->audio_st || is->audio_finished == is->audioq.serial) &&
2936             (!is->video_st || (is->video_finished == is->videoq.serial && is->pictq_size == 0))) {
2937             if (loop != 1 && (!loop || --loop)) {
2938                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2939             } else if (autoexit) {
2940                 ret = AVERROR_EOF;
2941                 goto fail;
2942             }
2943         }
2944         if (eof) {
2945             if (is->video_stream >= 0)
2946                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2947             if (is->audio_stream >= 0)
2948                 packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
2949             SDL_Delay(10);
2950             eof=0;
2951             continue;
2952         }
2953         ret = av_read_frame(ic, pkt);
2954         if (ret < 0) {
2955             if (ret == AVERROR_EOF || url_feof(ic->pb))
2956                 eof = 1;
2957             if (ic->pb && ic->pb->error)
2958                 break;
2959             SDL_LockMutex(wait_mutex);
2960             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
2961             SDL_UnlockMutex(wait_mutex);
2962             continue;
2963         }
2964         /* check if packet is in play range specified by user, then queue, otherwise discard */
2965         stream_start_time = ic->streams[pkt->stream_index]->start_time;
2966         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2967                 (pkt->pts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
2968                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2969                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2970                 <= ((double)duration / 1000000);
2971         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2972             packet_queue_put(&is->audioq, pkt);
2973         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
2974                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
2975             packet_queue_put(&is->videoq, pkt);
2976         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2977             packet_queue_put(&is->subtitleq, pkt);
2978         } else {
2979             av_free_packet(pkt);
2980         }
2981     }
2982     /* wait until the end */
2983     while (!is->abort_request) {
2984         SDL_Delay(100);
2985     }
2986
2987     ret = 0;
2988  fail:
2989     /* close each stream */
2990     if (is->audio_stream >= 0)
2991         stream_component_close(is, is->audio_stream);
2992     if (is->video_stream >= 0)
2993         stream_component_close(is, is->video_stream);
2994     if (is->subtitle_stream >= 0)
2995         stream_component_close(is, is->subtitle_stream);
2996     if (is->ic) {
2997         avformat_close_input(&is->ic);
2998     }
2999
3000     if (ret != 0) {
3001         SDL_Event event;
3002
3003         event.type = FF_QUIT_EVENT;
3004         event.user.data1 = is;
3005         SDL_PushEvent(&event);
3006     }
3007     SDL_DestroyMutex(wait_mutex);
3008     return 0;
3009 }
3010
3011 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3012 {
3013     VideoState *is;
3014
3015     is = av_mallocz(sizeof(VideoState));
3016     if (!is)
3017         return NULL;
3018     av_strlcpy(is->filename, filename, sizeof(is->filename));
3019     is->iformat = iformat;
3020     is->ytop    = 0;
3021     is->xleft   = 0;
3022
3023     /* start video display */
3024     is->pictq_mutex = SDL_CreateMutex();
3025     is->pictq_cond  = SDL_CreateCond();
3026
3027     is->subpq_mutex = SDL_CreateMutex();
3028     is->subpq_cond  = SDL_CreateCond();
3029
3030     packet_queue_init(&is->videoq);
3031     packet_queue_init(&is->audioq);
3032     packet_queue_init(&is->subtitleq);
3033
3034     is->continue_read_thread = SDL_CreateCond();
3035
3036     init_clock(&is->vidclk, &is->videoq.serial);
3037     init_clock(&is->audclk, &is->audioq.serial);
3038     init_clock(&is->extclk, &is->extclk.serial);
3039     is->audio_clock_serial = -1;
3040     is->audio_last_serial = -1;
3041     is->av_sync_type = av_sync_type;
3042     is->read_tid     = SDL_CreateThread(read_thread, is);
3043     if (!is->read_tid) {
3044         av_free(is);
3045         return NULL;
3046     }
3047     return is;
3048 }
3049
3050 static void stream_cycle_channel(VideoState *is, int codec_type)
3051 {
3052     AVFormatContext *ic = is->ic;
3053     int start_index, stream_index;
3054     int old_index;
3055     AVStream *st;
3056     AVProgram *p = NULL;
3057     int nb_streams = is->ic->nb_streams;
3058
3059     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3060         start_index = is->last_video_stream;
3061         old_index = is->video_stream;
3062     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3063         start_index = is->last_audio_stream;
3064         old_index = is->audio_stream;
3065     } else {
3066         start_index = is->last_subtitle_stream;
3067         old_index = is->subtitle_stream;
3068     }
3069     stream_index = start_index;
3070
3071     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3072         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3073         if (p) {
3074             nb_streams = p->nb_stream_indexes;
3075             for (start_index = 0; start_index < nb_streams; start_index++)
3076                 if (p->stream_index[start_index] == stream_index)
3077                     break;
3078             if (start_index == nb_streams)
3079                 start_index = -1;
3080             stream_index = start_index;
3081         }
3082     }
3083
3084     for (;;) {
3085         if (++stream_index >= nb_streams)
3086         {
3087             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3088             {
3089                 stream_index = -1;
3090                 is->last_subtitle_stream = -1;
3091                 goto the_end;
3092             }
3093             if (start_index == -1)
3094                 return;
3095             stream_index = 0;
3096         }
3097         if (stream_index == start_index)
3098             return;
3099         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3100         if (st->codec->codec_type == codec_type) {
3101             /* check that parameters are OK */
3102             switch (codec_type) {
3103             case AVMEDIA_TYPE_AUDIO:
3104                 if (st->codec->sample_rate != 0 &&
3105                     st->codec->channels != 0)
3106                     goto the_end;
3107                 break;
3108             case AVMEDIA_TYPE_VIDEO:
3109             case AVMEDIA_TYPE_SUBTITLE:
3110                 goto the_end;
3111             default:
3112                 break;
3113             }
3114         }
3115     }
3116  the_end:
3117     if (p && stream_index != -1)
3118         stream_index = p->stream_index[stream_index];
3119     stream_component_close(is, old_index);
3120     stream_component_open(is, stream_index);
3121 }
3122
3123
3124 static void toggle_full_screen(VideoState *is)
3125 {
3126 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
3127     /* OS X needs to reallocate the SDL overlays */
3128     int i;
3129     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
3130         is->pictq[i].reallocate = 1;
3131 #endif
3132     is_full_screen = !is_full_screen;
3133     video_open(is, 1, NULL);
3134 }
3135
3136 static void toggle_audio_display(VideoState *is)
3137 {
3138     int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
3139     int next = is->show_mode;
3140     do {
3141         next = (next + 1) % SHOW_MODE_NB;
3142     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3143     if (is->show_mode != next) {
3144         fill_rectangle(screen,
3145                     is->xleft, is->ytop, is->width, is->height,
3146                     bgcolor, 1);
3147         is->force_refresh = 1;
3148         is->show_mode = next;
3149     }
3150 }
3151
3152 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3153     double remaining_time = 0.0;
3154     SDL_PumpEvents();
3155     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS)) {
3156         if (!cursor_hidden && av_gettime() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3157             SDL_ShowCursor(0);
3158             cursor_hidden = 1;
3159         }
3160         if (remaining_time > 0.0)
3161             av_usleep((int64_t)(remaining_time * 1000000.0));
3162         remaining_time = REFRESH_RATE;
3163         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3164             video_refresh(is, &remaining_time);
3165         SDL_PumpEvents();
3166     }
3167 }
3168
3169 /* handle an event sent by the GUI */
3170 static void event_loop(VideoState *cur_stream)
3171 {
3172     SDL_Event event;
3173     double incr, pos, frac;
3174
3175     for (;;) {
3176         double x;
3177         refresh_loop_wait_event(cur_stream, &event);
3178         switch (event.type) {
3179         case SDL_KEYDOWN:
3180             if (exit_on_keydown) {
3181                 do_exit(cur_stream);
3182                 break;
3183             }
3184             switch (event.key.keysym.sym) {
3185             case SDLK_ESCAPE:
3186             case SDLK_q:
3187                 do_exit(cur_stream);
3188                 break;
3189             case SDLK_f:
3190                 toggle_full_screen(cur_stream);
3191                 cur_stream->force_refresh = 1;
3192                 break;
3193             case SDLK_p:
3194             case SDLK_SPACE:
3195                 toggle_pause(cur_stream);
3196                 break;
3197             case SDLK_s: // S: Step to next frame
3198                 step_to_next_frame(cur_stream);
3199                 break;
3200             case SDLK_a:
3201                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3202                 break;
3203             case SDLK_v:
3204                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3205                 break;
3206             case SDLK_c:
3207                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3208                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3209                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3210                 break;
3211             case SDLK_t:
3212                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3213                 break;
3214             case SDLK_w:
3215                 toggle_audio_display(cur_stream);
3216                 break;
3217             case SDLK_PAGEUP:
3218                 incr = 600.0;
3219                 goto do_seek;
3220             case SDLK_PAGEDOWN:
3221                 incr = -600.0;
3222                 goto do_seek;
3223             case SDLK_LEFT:
3224                 incr = -10.0;
3225                 goto do_seek;
3226             case SDLK_RIGHT:
3227                 incr = 10.0;
3228                 goto do_seek;
3229             case SDLK_UP:
3230                 incr = 60.0;
3231                 goto do_seek;
3232             case SDLK_DOWN:
3233                 incr = -60.0;
3234             do_seek:
3235                     if (seek_by_bytes) {
3236                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
3237                             pos = cur_stream->video_current_pos;
3238                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
3239                             pos = cur_stream->audio_pkt.pos;
3240                         } else
3241                             pos = avio_tell(cur_stream->ic->pb);
3242                         if (cur_stream->ic->bit_rate)
3243                             incr *= cur_stream->ic->bit_rate / 8.0;
3244                         else
3245                             incr *= 180000.0;
3246                         pos += incr;
3247                         stream_seek(cur_stream, pos, incr, 1);
3248                     } else {
3249                         pos = get_master_clock(cur_stream);
3250                         if (isnan(pos))
3251                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3252                         pos += incr;
3253                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3254                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3255                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3256                     }
3257                 break;
3258             default:
3259                 break;
3260             }
3261             break;
3262         case SDL_VIDEOEXPOSE:
3263             cur_stream->force_refresh = 1;
3264             break;
3265         case SDL_MOUSEBUTTONDOWN:
3266             if (exit_on_mousedown) {
3267                 do_exit(cur_stream);
3268                 break;
3269             }
3270         case SDL_MOUSEMOTION:
3271             if (cursor_hidden) {
3272                 SDL_ShowCursor(1);
3273                 cursor_hidden = 0;
3274             }
3275             cursor_last_shown = av_gettime();
3276             if (event.type == SDL_MOUSEBUTTONDOWN) {
3277                 x = event.button.x;
3278             } else {
3279                 if (event.motion.state != SDL_PRESSED)
3280                     break;
3281                 x = event.motion.x;
3282             }
3283                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3284                     uint64_t size =  avio_size(cur_stream->ic->pb);
3285                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3286                 } else {
3287                     int64_t ts;
3288                     int ns, hh, mm, ss;
3289                     int tns, thh, tmm, tss;
3290                     tns  = cur_stream->ic->duration / 1000000LL;
3291                     thh  = tns / 3600;
3292                     tmm  = (tns % 3600) / 60;
3293                     tss  = (tns % 60);
3294                     frac = x / cur_stream->width;
3295                     ns   = frac * tns;
3296                     hh   = ns / 3600;
3297                     mm   = (ns % 3600) / 60;
3298                     ss   = (ns % 60);
3299                     av_log(NULL, AV_LOG_INFO,
3300                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3301                             hh, mm, ss, thh, tmm, tss);
3302                     ts = frac * cur_stream->ic->duration;
3303                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3304                         ts += cur_stream->ic->start_time;
3305                     stream_seek(cur_stream, ts, 0, 0);
3306                 }
3307             break;
3308         case SDL_VIDEORESIZE:
3309                 screen = SDL_SetVideoMode(FFMIN(16383, event.resize.w), event.resize.h, 0,
3310                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
3311                 if (!screen) {
3312                     av_log(NULL, AV_LOG_FATAL, "Failed to set video mode\n");
3313                     do_exit(cur_stream);
3314                 }
3315                 screen_width  = cur_stream->width  = screen->w;
3316                 screen_height = cur_stream->height = screen->h;
3317                 cur_stream->force_refresh = 1;
3318             break;
3319         case SDL_QUIT:
3320         case FF_QUIT_EVENT:
3321             do_exit(cur_stream);
3322             break;
3323         case FF_ALLOC_EVENT:
3324             alloc_picture(event.user.data1);
3325             break;
3326         default:
3327             break;
3328         }
3329     }
3330 }
3331
3332 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3333 {
3334     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3335     return opt_default(NULL, "video_size", arg);
3336 }
3337
3338 static int opt_width(void *optctx, const char *opt, const char *arg)
3339 {
3340     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3341     return 0;
3342 }
3343
3344 static int opt_height(void *optctx, const char *opt, const char *arg)
3345 {
3346     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3347     return 0;
3348 }
3349
3350 static int opt_format(void *optctx, const char *opt, const char *arg)
3351 {
3352     file_iformat = av_find_input_format(arg);
3353     if (!file_iformat) {
3354         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3355         return AVERROR(EINVAL);
3356     }
3357     return 0;
3358 }
3359
3360 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3361 {
3362     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3363     return opt_default(NULL, "pixel_format", arg);
3364 }
3365
3366 static int opt_sync(void *optctx, const char *opt, const char *arg)
3367 {
3368     if (!strcmp(arg, "audio"))
3369         av_sync_type = AV_SYNC_AUDIO_MASTER;
3370     else if (!strcmp(arg, "video"))
3371         av_sync_type = AV_SYNC_VIDEO_MASTER;
3372     else if (!strcmp(arg, "ext"))
3373         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3374     else {
3375         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3376         exit(1);
3377     }
3378     return 0;
3379 }
3380
3381 static int opt_seek(void *optctx, const char *opt, const char *arg)
3382 {
3383     start_time = parse_time_or_die(opt, arg, 1);
3384     return 0;
3385 }
3386
3387 static int opt_duration(void *optctx, const char *opt, const char *arg)
3388 {
3389     duration = parse_time_or_die(opt, arg, 1);
3390     return 0;
3391 }
3392
3393 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3394 {
3395     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3396                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3397                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3398                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3399     return 0;
3400 }
3401
3402 static void opt_input_file(void *optctx, const char *filename)
3403 {
3404     if (input_filename) {
3405         av_log(NULL, AV_LOG_FATAL,
3406                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3407                 filename, input_filename);
3408         exit(1);
3409     }
3410     if (!strcmp(filename, "-"))
3411         filename = "pipe:";
3412     input_filename = filename;
3413 }
3414
3415 static int opt_codec(void *optctx, const char *opt, const char *arg)
3416 {
3417    const char *spec = strchr(opt, ':');
3418    if (!spec) {
3419        av_log(NULL, AV_LOG_ERROR,
3420               "No media specifier was specified in '%s' in option '%s'\n",
3421                arg, opt);
3422        return AVERROR(EINVAL);
3423    }
3424    spec++;
3425    switch (spec[0]) {
3426    case 'a' :    audio_codec_name = arg; break;
3427    case 's' : subtitle_codec_name = arg; break;
3428    case 'v' :    video_codec_name = arg; break;
3429    default:
3430        av_log(NULL, AV_LOG_ERROR,
3431               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3432        return AVERROR(EINVAL);
3433    }
3434    return 0;
3435 }
3436
3437 static int dummy;
3438
3439 static const OptionDef options[] = {
3440 #include "cmdutils_common_opts.h"
3441     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3442     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3443     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3444     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3445     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3446     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3447     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3448     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
3449     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
3450     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
3451     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3452     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3453     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3454     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3455     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3456     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3457     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3458     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { &workaround_bugs }, "workaround bugs", "" },
3459     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3460     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3461     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3462     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3463     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { &error_concealment }, "set error concealment options",  "bit_mask" },
3464     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3465     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3466     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3467     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3468     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3469     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3470     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3471     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3472 #if CONFIG_AVFILTER
3473     { "vf", OPT_STRING | HAS_ARG, { &vfilters }, "set video filters", "filter_graph" },
3474     { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
3475 #endif
3476     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
3477     { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3478     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
3479     { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
3480     { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
3481     { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
3482     { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
3483     { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
3484     { NULL, },
3485 };
3486
3487 static void show_usage(void)
3488 {
3489     av_log(NULL, AV_LOG_INFO, "Simple media player\n");
3490     av_log(NULL, AV_LOG_INFO, "usage: %s [options] input_file\n", program_name);
3491     av_log(NULL, AV_LOG_INFO, "\n");
3492 }
3493
3494 void show_help_default(const char *opt, const char *arg)
3495 {
3496     av_log_set_callback(log_callback_help);
3497     show_usage();
3498     show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
3499     show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
3500     printf("\n");
3501     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3502     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3503 #if !CONFIG_AVFILTER
3504     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3505 #else
3506     show_help_children(avfilter_get_class(), AV_OPT_FLAG_FILTERING_PARAM);
3507 #endif
3508     printf("\nWhile playing:\n"
3509            "q, ESC              quit\n"
3510            "f                   toggle full screen\n"
3511            "p, SPC              pause\n"
3512            "a                   cycle audio channel in the current program\n"
3513            "v                   cycle video channel\n"
3514            "t                   cycle subtitle channel in the current program\n"
3515            "c                   cycle program\n"
3516            "w                   show audio waves\n"
3517            "s                   activate frame-step mode\n"
3518            "left/right          seek backward/forward 10 seconds\n"
3519            "down/up             seek backward/forward 1 minute\n"
3520            "page down/page up   seek backward/forward 10 minutes\n"
3521            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3522            );
3523 }
3524
3525 static int lockmgr(void **mtx, enum AVLockOp op)
3526 {
3527    switch(op) {
3528       case AV_LOCK_CREATE:
3529           *mtx = SDL_CreateMutex();
3530           if(!*mtx)
3531               return 1;
3532           return 0;
3533       case AV_LOCK_OBTAIN:
3534           return !!SDL_LockMutex(*mtx);
3535       case AV_LOCK_RELEASE:
3536           return !!SDL_UnlockMutex(*mtx);
3537       case AV_LOCK_DESTROY:
3538           SDL_DestroyMutex(*mtx);
3539           return 0;
3540    }
3541    return 1;
3542 }
3543
3544 /* Called from the main */
3545 int main(int argc, char **argv)
3546 {
3547     int flags;
3548     VideoState *is;
3549     char dummy_videodriver[] = "SDL_VIDEODRIVER=dummy";
3550
3551     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3552     parse_loglevel(argc, argv, options);
3553
3554     /* register all codecs, demux and protocols */
3555 #if CONFIG_AVDEVICE
3556     avdevice_register_all();
3557 #endif
3558 #if CONFIG_AVFILTER
3559     avfilter_register_all();
3560 #endif
3561     av_register_all();
3562     avformat_network_init();
3563
3564     init_opts();
3565
3566     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
3567     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
3568
3569     show_banner(argc, argv, options);
3570
3571     parse_options(NULL, argc, argv, options, opt_input_file);
3572
3573     if (!input_filename) {
3574         show_usage();
3575         av_log(NULL, AV_LOG_FATAL, "An input file must be specified\n");
3576         av_log(NULL, AV_LOG_FATAL,
3577                "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3578         exit(1);
3579     }
3580
3581     if (display_disable) {
3582         video_disable = 1;
3583     }
3584     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3585     if (audio_disable)
3586         flags &= ~SDL_INIT_AUDIO;
3587     if (display_disable)
3588         SDL_putenv(dummy_videodriver); /* For the event queue, we always need a video driver. */
3589 #if !defined(__MINGW32__) && !defined(__APPLE__)
3590     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3591 #endif
3592     if (SDL_Init (flags)) {
3593         av_log(NULL, AV_LOG_FATAL, "Could not initialize SDL - %s\n", SDL_GetError());
3594         av_log(NULL, AV_LOG_FATAL, "(Did you set the DISPLAY variable?)\n");
3595         exit(1);
3596     }
3597
3598     if (!display_disable) {
3599         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3600         fs_screen_width = vi->current_w;
3601         fs_screen_height = vi->current_h;
3602     }
3603
3604     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3605     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3606     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3607
3608     if (av_lockmgr_register(lockmgr)) {
3609         av_log(NULL, AV_LOG_FATAL, "Could not initialize lock manager!\n");
3610         do_exit(NULL);
3611     }
3612
3613     av_init_packet(&flush_pkt);
3614     flush_pkt.data = (uint8_t *)&flush_pkt;
3615
3616     is = stream_open(input_filename, file_iformat);
3617     if (!is) {
3618         av_log(NULL, AV_LOG_FATAL, "Failed to initialize VideoState!\n");
3619         do_exit(NULL);
3620     }
3621
3622     event_loop(is);
3623
3624     /* never returns */
3625
3626     return 0;
3627 }