rtsp: Retry authentication if failed due to being stale
[ffmpeg.git] / avplay.c
1 /*
2  * avplay : Simple Media Player based on the Libav libraries
3  * Copyright (c) 2003 Fabrice Bellard
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 #include "config.h"
23 #include <inttypes.h>
24 #include <math.h>
25 #include <limits.h>
26 #include "libavutil/avstring.h"
27 #include "libavutil/colorspace.h"
28 #include "libavutil/mathematics.h"
29 #include "libavutil/pixdesc.h"
30 #include "libavutil/imgutils.h"
31 #include "libavutil/dict.h"
32 #include "libavutil/parseutils.h"
33 #include "libavutil/samplefmt.h"
34 #include "libavformat/avformat.h"
35 #include "libavdevice/avdevice.h"
36 #include "libswscale/swscale.h"
37 #include "libavcodec/audioconvert.h"
38 #include "libavutil/opt.h"
39 #include "libavcodec/avfft.h"
40
41 #if CONFIG_AVFILTER
42 # include "libavfilter/avfilter.h"
43 # include "libavfilter/avfiltergraph.h"
44 #endif
45
46 #include "cmdutils.h"
47
48 #include <SDL.h>
49 #include <SDL_thread.h>
50
51 #ifdef __MINGW32__
52 #undef main /* We don't want SDL to override our main() */
53 #endif
54
55 #include <unistd.h>
56 #include <assert.h>
57
58 const char program_name[] = "avplay";
59 const int program_birth_year = 2003;
60
61 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
62 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
63 #define MIN_FRAMES 5
64
65 /* SDL audio buffer size, in samples. Should be small to have precise
66    A/V sync as SDL does not have hardware buffer fullness info. */
67 #define SDL_AUDIO_BUFFER_SIZE 1024
68
69 /* no AV sync correction is done if below the AV sync threshold */
70 #define AV_SYNC_THRESHOLD 0.01
71 /* no AV correction is done if too big error */
72 #define AV_NOSYNC_THRESHOLD 10.0
73
74 #define FRAME_SKIP_FACTOR 0.05
75
76 /* maximum audio speed change to get correct sync */
77 #define SAMPLE_CORRECTION_PERCENT_MAX 10
78
79 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
80 #define AUDIO_DIFF_AVG_NB   20
81
82 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
83 #define SAMPLE_ARRAY_SIZE (2 * 65536)
84
85 static int sws_flags = SWS_BICUBIC;
86
87 typedef struct PacketQueue {
88     AVPacketList *first_pkt, *last_pkt;
89     int nb_packets;
90     int size;
91     int abort_request;
92     SDL_mutex *mutex;
93     SDL_cond *cond;
94 } PacketQueue;
95
96 #define VIDEO_PICTURE_QUEUE_SIZE 2
97 #define SUBPICTURE_QUEUE_SIZE 4
98
99 typedef struct VideoPicture {
100     double pts;                                  ///< presentation time stamp for this picture
101     double target_clock;                         ///< av_gettime() time at which this should be displayed ideally
102     int64_t pos;                                 ///< byte position in file
103     SDL_Overlay *bmp;
104     int width, height; /* source height & width */
105     int allocated;
106     int reallocate;
107     enum PixelFormat pix_fmt;
108
109 #if CONFIG_AVFILTER
110     AVFilterBufferRef *picref;
111 #endif
112 } VideoPicture;
113
114 typedef struct SubPicture {
115     double pts; /* presentation time stamp for this picture */
116     AVSubtitle sub;
117 } SubPicture;
118
119 enum {
120     AV_SYNC_AUDIO_MASTER, /* default choice */
121     AV_SYNC_VIDEO_MASTER,
122     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
123 };
124
125 typedef struct VideoState {
126     SDL_Thread *parse_tid;
127     SDL_Thread *video_tid;
128     SDL_Thread *refresh_tid;
129     AVInputFormat *iformat;
130     int no_background;
131     int abort_request;
132     int paused;
133     int last_paused;
134     int seek_req;
135     int seek_flags;
136     int64_t seek_pos;
137     int64_t seek_rel;
138     int read_pause_return;
139     AVFormatContext *ic;
140
141     int audio_stream;
142
143     int av_sync_type;
144     double external_clock; /* external clock base */
145     int64_t external_clock_time;
146
147     double audio_clock;
148     double audio_diff_cum; /* used for AV difference average computation */
149     double audio_diff_avg_coef;
150     double audio_diff_threshold;
151     int audio_diff_avg_count;
152     AVStream *audio_st;
153     PacketQueue audioq;
154     int audio_hw_buf_size;
155     uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
156     uint8_t *audio_buf;
157     uint8_t *audio_buf1;
158     unsigned int audio_buf_size; /* in bytes */
159     int audio_buf_index; /* in bytes */
160     AVPacket audio_pkt_temp;
161     AVPacket audio_pkt;
162     enum AVSampleFormat audio_src_fmt;
163     AVAudioConvert *reformat_ctx;
164     AVFrame *frame;
165
166     int show_audio; /* if true, display audio samples */
167     int16_t sample_array[SAMPLE_ARRAY_SIZE];
168     int sample_array_index;
169     int last_i_start;
170     RDFTContext *rdft;
171     int rdft_bits;
172     FFTSample *rdft_data;
173     int xpos;
174
175     SDL_Thread *subtitle_tid;
176     int subtitle_stream;
177     int subtitle_stream_changed;
178     AVStream *subtitle_st;
179     PacketQueue subtitleq;
180     SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
181     int subpq_size, subpq_rindex, subpq_windex;
182     SDL_mutex *subpq_mutex;
183     SDL_cond *subpq_cond;
184
185     double frame_timer;
186     double frame_last_pts;
187     double frame_last_delay;
188     double video_clock;                          ///< pts of last decoded frame / predicted pts of next decoded frame
189     int video_stream;
190     AVStream *video_st;
191     PacketQueue videoq;
192     double video_current_pts;                    ///< current displayed pts (different from video_clock if frame fifos are used)
193     double video_current_pts_drift;              ///< video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
194     int64_t video_current_pos;                   ///< current displayed file pos
195     VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
196     int pictq_size, pictq_rindex, pictq_windex;
197     SDL_mutex *pictq_mutex;
198     SDL_cond *pictq_cond;
199 #if !CONFIG_AVFILTER
200     struct SwsContext *img_convert_ctx;
201 #endif
202
203     //    QETimer *video_timer;
204     char filename[1024];
205     int width, height, xleft, ytop;
206
207     PtsCorrectionContext pts_ctx;
208
209 #if CONFIG_AVFILTER
210     AVFilterContext *out_video_filter;          ///< the last filter in the video chain
211 #endif
212
213     float skip_frames;
214     float skip_frames_index;
215     int refresh;
216 } VideoState;
217
218 static void show_help(void);
219
220 /* options specified by the user */
221 static AVInputFormat *file_iformat;
222 static const char *input_filename;
223 static const char *window_title;
224 static int fs_screen_width;
225 static int fs_screen_height;
226 static int screen_width  = 0;
227 static int screen_height = 0;
228 static int audio_disable;
229 static int video_disable;
230 static int wanted_stream[AVMEDIA_TYPE_NB] = {
231     [AVMEDIA_TYPE_AUDIO]    = -1,
232     [AVMEDIA_TYPE_VIDEO]    = -1,
233     [AVMEDIA_TYPE_SUBTITLE] = -1,
234 };
235 static int seek_by_bytes = -1;
236 static int display_disable;
237 static int show_status = 1;
238 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
239 static int64_t start_time = AV_NOPTS_VALUE;
240 static int64_t duration = AV_NOPTS_VALUE;
241 static int debug = 0;
242 static int debug_mv = 0;
243 static int step = 0;
244 static int workaround_bugs = 1;
245 static int fast = 0;
246 static int genpts = 0;
247 static int lowres = 0;
248 static int idct = FF_IDCT_AUTO;
249 static enum AVDiscard skip_frame       = AVDISCARD_DEFAULT;
250 static enum AVDiscard skip_idct        = AVDISCARD_DEFAULT;
251 static enum AVDiscard skip_loop_filter = AVDISCARD_DEFAULT;
252 static int error_concealment = 3;
253 static int decoder_reorder_pts = -1;
254 static int autoexit;
255 static int exit_on_keydown;
256 static int exit_on_mousedown;
257 static int loop = 1;
258 static int framedrop = 1;
259
260 static int rdftspeed = 20;
261 #if CONFIG_AVFILTER
262 static char *vfilters = NULL;
263 #endif
264
265 /* current context */
266 static int is_full_screen;
267 static VideoState *cur_stream;
268 static int64_t audio_callback_time;
269
270 static AVPacket flush_pkt;
271
272 #define FF_ALLOC_EVENT   (SDL_USEREVENT)
273 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
274 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
275
276 static SDL_Surface *screen;
277
278 void exit_program(int ret)
279 {
280     exit(ret);
281 }
282
283 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
284
285 /* packet queue handling */
286 static void packet_queue_init(PacketQueue *q)
287 {
288     memset(q, 0, sizeof(PacketQueue));
289     q->mutex = SDL_CreateMutex();
290     q->cond = SDL_CreateCond();
291     packet_queue_put(q, &flush_pkt);
292 }
293
294 static void packet_queue_flush(PacketQueue *q)
295 {
296     AVPacketList *pkt, *pkt1;
297
298     SDL_LockMutex(q->mutex);
299     for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
300         pkt1 = pkt->next;
301         av_free_packet(&pkt->pkt);
302         av_freep(&pkt);
303     }
304     q->last_pkt = NULL;
305     q->first_pkt = NULL;
306     q->nb_packets = 0;
307     q->size = 0;
308     SDL_UnlockMutex(q->mutex);
309 }
310
311 static void packet_queue_end(PacketQueue *q)
312 {
313     packet_queue_flush(q);
314     SDL_DestroyMutex(q->mutex);
315     SDL_DestroyCond(q->cond);
316 }
317
318 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
319 {
320     AVPacketList *pkt1;
321
322     /* duplicate the packet */
323     if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
324         return -1;
325
326     pkt1 = av_malloc(sizeof(AVPacketList));
327     if (!pkt1)
328         return -1;
329     pkt1->pkt = *pkt;
330     pkt1->next = NULL;
331
332
333     SDL_LockMutex(q->mutex);
334
335     if (!q->last_pkt)
336
337         q->first_pkt = pkt1;
338     else
339         q->last_pkt->next = pkt1;
340     q->last_pkt = pkt1;
341     q->nb_packets++;
342     q->size += pkt1->pkt.size + sizeof(*pkt1);
343     /* XXX: should duplicate packet data in DV case */
344     SDL_CondSignal(q->cond);
345
346     SDL_UnlockMutex(q->mutex);
347     return 0;
348 }
349
350 static void packet_queue_abort(PacketQueue *q)
351 {
352     SDL_LockMutex(q->mutex);
353
354     q->abort_request = 1;
355
356     SDL_CondSignal(q->cond);
357
358     SDL_UnlockMutex(q->mutex);
359 }
360
361 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
362 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
363 {
364     AVPacketList *pkt1;
365     int ret;
366
367     SDL_LockMutex(q->mutex);
368
369     for (;;) {
370         if (q->abort_request) {
371             ret = -1;
372             break;
373         }
374
375         pkt1 = q->first_pkt;
376         if (pkt1) {
377             q->first_pkt = pkt1->next;
378             if (!q->first_pkt)
379                 q->last_pkt = NULL;
380             q->nb_packets--;
381             q->size -= pkt1->pkt.size + sizeof(*pkt1);
382             *pkt = pkt1->pkt;
383             av_free(pkt1);
384             ret = 1;
385             break;
386         } else if (!block) {
387             ret = 0;
388             break;
389         } else {
390             SDL_CondWait(q->cond, q->mutex);
391         }
392     }
393     SDL_UnlockMutex(q->mutex);
394     return ret;
395 }
396
397 static inline void fill_rectangle(SDL_Surface *screen,
398                                   int x, int y, int w, int h, int color)
399 {
400     SDL_Rect rect;
401     rect.x = x;
402     rect.y = y;
403     rect.w = w;
404     rect.h = h;
405     SDL_FillRect(screen, &rect, color);
406 }
407
408 #define ALPHA_BLEND(a, oldp, newp, s)\
409 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
410
411 #define RGBA_IN(r, g, b, a, s)\
412 {\
413     unsigned int v = ((const uint32_t *)(s))[0];\
414     a = (v >> 24) & 0xff;\
415     r = (v >> 16) & 0xff;\
416     g = (v >> 8) & 0xff;\
417     b = v & 0xff;\
418 }
419
420 #define YUVA_IN(y, u, v, a, s, pal)\
421 {\
422     unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
423     a = (val >> 24) & 0xff;\
424     y = (val >> 16) & 0xff;\
425     u = (val >> 8) & 0xff;\
426     v = val & 0xff;\
427 }
428
429 #define YUVA_OUT(d, y, u, v, a)\
430 {\
431     ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
432 }
433
434
435 #define BPP 1
436
437 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
438 {
439     int wrap, wrap3, width2, skip2;
440     int y, u, v, a, u1, v1, a1, w, h;
441     uint8_t *lum, *cb, *cr;
442     const uint8_t *p;
443     const uint32_t *pal;
444     int dstx, dsty, dstw, dsth;
445
446     dstw = av_clip(rect->w, 0, imgw);
447     dsth = av_clip(rect->h, 0, imgh);
448     dstx = av_clip(rect->x, 0, imgw - dstw);
449     dsty = av_clip(rect->y, 0, imgh - dsth);
450     lum = dst->data[0] + dsty * dst->linesize[0];
451     cb  = dst->data[1] + (dsty >> 1) * dst->linesize[1];
452     cr  = dst->data[2] + (dsty >> 1) * dst->linesize[2];
453
454     width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
455     skip2 = dstx >> 1;
456     wrap = dst->linesize[0];
457     wrap3 = rect->pict.linesize[0];
458     p = rect->pict.data[0];
459     pal = (const uint32_t *)rect->pict.data[1];  /* Now in YCrCb! */
460
461     if (dsty & 1) {
462         lum += dstx;
463         cb += skip2;
464         cr += skip2;
465
466         if (dstx & 1) {
467             YUVA_IN(y, u, v, a, p, pal);
468             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
469             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
470             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
471             cb++;
472             cr++;
473             lum++;
474             p += BPP;
475         }
476         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
477             YUVA_IN(y, u, v, a, p, pal);
478             u1 = u;
479             v1 = v;
480             a1 = a;
481             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
482
483             YUVA_IN(y, u, v, a, p + BPP, pal);
484             u1 += u;
485             v1 += v;
486             a1 += a;
487             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
488             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
489             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
490             cb++;
491             cr++;
492             p += 2 * BPP;
493             lum += 2;
494         }
495         if (w) {
496             YUVA_IN(y, u, v, a, p, pal);
497             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
498             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
499             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
500             p++;
501             lum++;
502         }
503         p += wrap3 - dstw * BPP;
504         lum += wrap - dstw - dstx;
505         cb += dst->linesize[1] - width2 - skip2;
506         cr += dst->linesize[2] - width2 - skip2;
507     }
508     for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
509         lum += dstx;
510         cb += skip2;
511         cr += skip2;
512
513         if (dstx & 1) {
514             YUVA_IN(y, u, v, a, p, pal);
515             u1 = u;
516             v1 = v;
517             a1 = a;
518             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
519             p += wrap3;
520             lum += wrap;
521             YUVA_IN(y, u, v, a, p, pal);
522             u1 += u;
523             v1 += v;
524             a1 += a;
525             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
526             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
527             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
528             cb++;
529             cr++;
530             p += -wrap3 + BPP;
531             lum += -wrap + 1;
532         }
533         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
534             YUVA_IN(y, u, v, a, p, pal);
535             u1 = u;
536             v1 = v;
537             a1 = a;
538             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
539
540             YUVA_IN(y, u, v, a, p + BPP, pal);
541             u1 += u;
542             v1 += v;
543             a1 += a;
544             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
545             p += wrap3;
546             lum += wrap;
547
548             YUVA_IN(y, u, v, a, p, pal);
549             u1 += u;
550             v1 += v;
551             a1 += a;
552             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
553
554             YUVA_IN(y, u, v, a, p + BPP, pal);
555             u1 += u;
556             v1 += v;
557             a1 += a;
558             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
559
560             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
561             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
562
563             cb++;
564             cr++;
565             p += -wrap3 + 2 * BPP;
566             lum += -wrap + 2;
567         }
568         if (w) {
569             YUVA_IN(y, u, v, a, p, pal);
570             u1 = u;
571             v1 = v;
572             a1 = a;
573             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
574             p += wrap3;
575             lum += wrap;
576             YUVA_IN(y, u, v, a, p, pal);
577             u1 += u;
578             v1 += v;
579             a1 += a;
580             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
581             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
582             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
583             cb++;
584             cr++;
585             p += -wrap3 + BPP;
586             lum += -wrap + 1;
587         }
588         p += wrap3 + (wrap3 - dstw * BPP);
589         lum += wrap + (wrap - dstw - dstx);
590         cb += dst->linesize[1] - width2 - skip2;
591         cr += dst->linesize[2] - width2 - skip2;
592     }
593     /* handle odd height */
594     if (h) {
595         lum += dstx;
596         cb += skip2;
597         cr += skip2;
598
599         if (dstx & 1) {
600             YUVA_IN(y, u, v, a, p, pal);
601             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
602             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
603             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
604             cb++;
605             cr++;
606             lum++;
607             p += BPP;
608         }
609         for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
610             YUVA_IN(y, u, v, a, p, pal);
611             u1 = u;
612             v1 = v;
613             a1 = a;
614             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
615
616             YUVA_IN(y, u, v, a, p + BPP, pal);
617             u1 += u;
618             v1 += v;
619             a1 += a;
620             lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
621             cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
622             cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
623             cb++;
624             cr++;
625             p += 2 * BPP;
626             lum += 2;
627         }
628         if (w) {
629             YUVA_IN(y, u, v, a, p, pal);
630             lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
631             cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
632             cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
633         }
634     }
635 }
636
637 static void free_subpicture(SubPicture *sp)
638 {
639     avsubtitle_free(&sp->sub);
640 }
641
642 static void video_image_display(VideoState *is)
643 {
644     VideoPicture *vp;
645     SubPicture *sp;
646     AVPicture pict;
647     float aspect_ratio;
648     int width, height, x, y;
649     SDL_Rect rect;
650     int i;
651
652     vp = &is->pictq[is->pictq_rindex];
653     if (vp->bmp) {
654 #if CONFIG_AVFILTER
655          if (vp->picref->video->pixel_aspect.num == 0)
656              aspect_ratio = 0;
657          else
658              aspect_ratio = av_q2d(vp->picref->video->pixel_aspect);
659 #else
660
661         /* XXX: use variable in the frame */
662         if (is->video_st->sample_aspect_ratio.num)
663             aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
664         else if (is->video_st->codec->sample_aspect_ratio.num)
665             aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
666         else
667             aspect_ratio = 0;
668 #endif
669         if (aspect_ratio <= 0.0)
670             aspect_ratio = 1.0;
671         aspect_ratio *= (float)vp->width / (float)vp->height;
672
673         if (is->subtitle_st)
674         {
675             if (is->subpq_size > 0)
676             {
677                 sp = &is->subpq[is->subpq_rindex];
678
679                 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
680                 {
681                     SDL_LockYUVOverlay (vp->bmp);
682
683                     pict.data[0] = vp->bmp->pixels[0];
684                     pict.data[1] = vp->bmp->pixels[2];
685                     pict.data[2] = vp->bmp->pixels[1];
686
687                     pict.linesize[0] = vp->bmp->pitches[0];
688                     pict.linesize[1] = vp->bmp->pitches[2];
689                     pict.linesize[2] = vp->bmp->pitches[1];
690
691                     for (i = 0; i < sp->sub.num_rects; i++)
692                         blend_subrect(&pict, sp->sub.rects[i],
693                                       vp->bmp->w, vp->bmp->h);
694
695                     SDL_UnlockYUVOverlay (vp->bmp);
696                 }
697             }
698         }
699
700
701         /* XXX: we suppose the screen has a 1.0 pixel ratio */
702         height = is->height;
703         width = ((int)rint(height * aspect_ratio)) & ~1;
704         if (width > is->width) {
705             width = is->width;
706             height = ((int)rint(width / aspect_ratio)) & ~1;
707         }
708         x = (is->width - width) / 2;
709         y = (is->height - height) / 2;
710         is->no_background = 0;
711         rect.x = is->xleft + x;
712         rect.y = is->ytop  + y;
713         rect.w = width;
714         rect.h = height;
715         SDL_DisplayYUVOverlay(vp->bmp, &rect);
716     }
717 }
718
719 /* get the current audio output buffer size, in samples. With SDL, we
720    cannot have a precise information */
721 static int audio_write_get_buf_size(VideoState *is)
722 {
723     return is->audio_buf_size - is->audio_buf_index;
724 }
725
726 static inline int compute_mod(int a, int b)
727 {
728     a = a % b;
729     if (a >= 0)
730         return a;
731     else
732         return a + b;
733 }
734
735 static void video_audio_display(VideoState *s)
736 {
737     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
738     int ch, channels, h, h2, bgcolor, fgcolor;
739     int16_t time_diff;
740     int rdft_bits, nb_freq;
741
742     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
743         ;
744     nb_freq = 1 << (rdft_bits - 1);
745
746     /* compute display index : center on currently output samples */
747     channels = s->audio_st->codec->channels;
748     nb_display_channels = channels;
749     if (!s->paused) {
750         int data_used = s->show_audio == 1 ? s->width : (2 * nb_freq);
751         n = 2 * channels;
752         delay = audio_write_get_buf_size(s);
753         delay /= n;
754
755         /* to be more precise, we take into account the time spent since
756            the last buffer computation */
757         if (audio_callback_time) {
758             time_diff = av_gettime() - audio_callback_time;
759             delay -= (time_diff * s->audio_st->codec->sample_rate) / 1000000;
760         }
761
762         delay += 2 * data_used;
763         if (delay < data_used)
764             delay = data_used;
765
766         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
767         if (s->show_audio == 1) {
768             h = INT_MIN;
769             for (i = 0; i < 1000; i += channels) {
770                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
771                 int a = s->sample_array[idx];
772                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
773                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
774                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
775                 int score = a - d;
776                 if (h < score && (b ^ c) < 0) {
777                     h = score;
778                     i_start = idx;
779                 }
780             }
781         }
782
783         s->last_i_start = i_start;
784     } else {
785         i_start = s->last_i_start;
786     }
787
788     bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
789     if (s->show_audio == 1) {
790         fill_rectangle(screen,
791                        s->xleft, s->ytop, s->width, s->height,
792                        bgcolor);
793
794         fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
795
796         /* total height for one channel */
797         h = s->height / nb_display_channels;
798         /* graph height / 2 */
799         h2 = (h * 9) / 20;
800         for (ch = 0; ch < nb_display_channels; ch++) {
801             i = i_start + ch;
802             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
803             for (x = 0; x < s->width; x++) {
804                 y = (s->sample_array[i] * h2) >> 15;
805                 if (y < 0) {
806                     y = -y;
807                     ys = y1 - y;
808                 } else {
809                     ys = y1;
810                 }
811                 fill_rectangle(screen,
812                                s->xleft + x, ys, 1, y,
813                                fgcolor);
814                 i += channels;
815                 if (i >= SAMPLE_ARRAY_SIZE)
816                     i -= SAMPLE_ARRAY_SIZE;
817             }
818         }
819
820         fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
821
822         for (ch = 1; ch < nb_display_channels; ch++) {
823             y = s->ytop + ch * h;
824             fill_rectangle(screen,
825                            s->xleft, y, s->width, 1,
826                            fgcolor);
827         }
828         SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
829     } else {
830         nb_display_channels= FFMIN(nb_display_channels, 2);
831         if (rdft_bits != s->rdft_bits) {
832             av_rdft_end(s->rdft);
833             av_free(s->rdft_data);
834             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
835             s->rdft_bits = rdft_bits;
836             s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
837         }
838         {
839             FFTSample *data[2];
840             for (ch = 0; ch < nb_display_channels; ch++) {
841                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
842                 i = i_start + ch;
843                 for (x = 0; x < 2 * nb_freq; x++) {
844                     double w = (x-nb_freq) * (1.0 / nb_freq);
845                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
846                     i += channels;
847                     if (i >= SAMPLE_ARRAY_SIZE)
848                         i -= SAMPLE_ARRAY_SIZE;
849                 }
850                 av_rdft_calc(s->rdft, data[ch]);
851             }
852             // least efficient way to do this, we should of course directly access it but its more than fast enough
853             for (y = 0; y < s->height; y++) {
854                 double w = 1 / sqrt(nb_freq);
855                 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]));
856                 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
857                        + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
858                 a = FFMIN(a, 255);
859                 b = FFMIN(b, 255);
860                 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
861
862                 fill_rectangle(screen,
863                             s->xpos, s->height-y, 1, 1,
864                             fgcolor);
865             }
866         }
867         SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
868         s->xpos++;
869         if (s->xpos >= s->width)
870             s->xpos= s->xleft;
871     }
872 }
873
874 static int video_open(VideoState *is)
875 {
876     int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
877     int w,h;
878
879     if (is_full_screen) flags |= SDL_FULLSCREEN;
880     else                flags |= SDL_RESIZABLE;
881
882     if (is_full_screen && fs_screen_width) {
883         w = fs_screen_width;
884         h = fs_screen_height;
885     } else if (!is_full_screen && screen_width) {
886         w = screen_width;
887         h = screen_height;
888 #if CONFIG_AVFILTER
889     } else if (is->out_video_filter && is->out_video_filter->inputs[0]) {
890         w = is->out_video_filter->inputs[0]->w;
891         h = is->out_video_filter->inputs[0]->h;
892 #else
893     } else if (is->video_st && is->video_st->codec->width) {
894         w = is->video_st->codec->width;
895         h = is->video_st->codec->height;
896 #endif
897     } else {
898         w = 640;
899         h = 480;
900     }
901     if (screen && is->width == screen->w && screen->w == w
902        && is->height== screen->h && screen->h == h)
903         return 0;
904
905 #if defined(__APPLE__) && !SDL_VERSION_ATLEAST(1, 2, 14)
906     /* setting bits_per_pixel = 0 or 32 causes blank video on OS X and older SDL */
907     screen = SDL_SetVideoMode(w, h, 24, flags);
908 #else
909     screen = SDL_SetVideoMode(w, h, 0, flags);
910 #endif
911     if (!screen) {
912         fprintf(stderr, "SDL: could not set video mode - exiting\n");
913         return -1;
914     }
915     if (!window_title)
916         window_title = input_filename;
917     SDL_WM_SetCaption(window_title, window_title);
918
919     is->width  = screen->w;
920     is->height = screen->h;
921
922     return 0;
923 }
924
925 /* display the current picture, if any */
926 static void video_display(VideoState *is)
927 {
928     if (!screen)
929         video_open(cur_stream);
930     if (is->audio_st && is->show_audio)
931         video_audio_display(is);
932     else if (is->video_st)
933         video_image_display(is);
934 }
935
936 static int refresh_thread(void *opaque)
937 {
938     VideoState *is= opaque;
939     while (!is->abort_request) {
940         SDL_Event event;
941         event.type = FF_REFRESH_EVENT;
942         event.user.data1 = opaque;
943         if (!is->refresh) {
944             is->refresh = 1;
945             SDL_PushEvent(&event);
946         }
947         usleep(is->audio_st && is->show_audio ? rdftspeed * 1000 : 5000); // FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
948     }
949     return 0;
950 }
951
952 /* get the current audio clock value */
953 static double get_audio_clock(VideoState *is)
954 {
955     double pts;
956     int hw_buf_size, bytes_per_sec;
957     pts = is->audio_clock;
958     hw_buf_size = audio_write_get_buf_size(is);
959     bytes_per_sec = 0;
960     if (is->audio_st) {
961         bytes_per_sec = is->audio_st->codec->sample_rate *
962                         2 * is->audio_st->codec->channels;
963     }
964     if (bytes_per_sec)
965         pts -= (double)hw_buf_size / bytes_per_sec;
966     return pts;
967 }
968
969 /* get the current video clock value */
970 static double get_video_clock(VideoState *is)
971 {
972     if (is->paused) {
973         return is->video_current_pts;
974     } else {
975         return is->video_current_pts_drift + av_gettime() / 1000000.0;
976     }
977 }
978
979 /* get the current external clock value */
980 static double get_external_clock(VideoState *is)
981 {
982     int64_t ti;
983     ti = av_gettime();
984     return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
985 }
986
987 /* get the current master clock value */
988 static double get_master_clock(VideoState *is)
989 {
990     double val;
991
992     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
993         if (is->video_st)
994             val = get_video_clock(is);
995         else
996             val = get_audio_clock(is);
997     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
998         if (is->audio_st)
999             val = get_audio_clock(is);
1000         else
1001             val = get_video_clock(is);
1002     } else {
1003         val = get_external_clock(is);
1004     }
1005     return val;
1006 }
1007
1008 /* seek in the stream */
1009 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1010 {
1011     if (!is->seek_req) {
1012         is->seek_pos = pos;
1013         is->seek_rel = rel;
1014         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1015         if (seek_by_bytes)
1016             is->seek_flags |= AVSEEK_FLAG_BYTE;
1017         is->seek_req = 1;
1018     }
1019 }
1020
1021 /* pause or resume the video */
1022 static void stream_pause(VideoState *is)
1023 {
1024     if (is->paused) {
1025         is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1026         if (is->read_pause_return != AVERROR(ENOSYS)) {
1027             is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
1028         }
1029         is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
1030     }
1031     is->paused = !is->paused;
1032 }
1033
1034 static double compute_target_time(double frame_current_pts, VideoState *is)
1035 {
1036     double delay, sync_threshold, diff;
1037
1038     /* compute nominal delay */
1039     delay = frame_current_pts - is->frame_last_pts;
1040     if (delay <= 0 || delay >= 10.0) {
1041         /* if incorrect delay, use previous one */
1042         delay = is->frame_last_delay;
1043     } else {
1044         is->frame_last_delay = delay;
1045     }
1046     is->frame_last_pts = frame_current_pts;
1047
1048     /* update delay to follow master synchronisation source */
1049     if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1050          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1051         /* if video is slave, we try to correct big delays by
1052            duplicating or deleting a frame */
1053         diff = get_video_clock(is) - get_master_clock(is);
1054
1055         /* skip or repeat frame. We take into account the
1056            delay to compute the threshold. I still don't know
1057            if it is the best guess */
1058         sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1059         if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1060             if (diff <= -sync_threshold)
1061                 delay = 0;
1062             else if (diff >= sync_threshold)
1063                 delay = 2 * delay;
1064         }
1065     }
1066     is->frame_timer += delay;
1067
1068     av_dlog(NULL, "video: delay=%0.3f pts=%0.3f A-V=%f\n",
1069             delay, frame_current_pts, -diff);
1070
1071     return is->frame_timer;
1072 }
1073
1074 /* called to display each frame */
1075 static void video_refresh_timer(void *opaque)
1076 {
1077     VideoState *is = opaque;
1078     VideoPicture *vp;
1079
1080     SubPicture *sp, *sp2;
1081
1082     if (is->video_st) {
1083 retry:
1084         if (is->pictq_size == 0) {
1085             // nothing to do, no picture to display in the que
1086         } else {
1087             double time = av_gettime() / 1000000.0;
1088             double next_target;
1089             /* dequeue the picture */
1090             vp = &is->pictq[is->pictq_rindex];
1091
1092             if (time < vp->target_clock)
1093                 return;
1094             /* update current video pts */
1095             is->video_current_pts = vp->pts;
1096             is->video_current_pts_drift = is->video_current_pts - time;
1097             is->video_current_pos = vp->pos;
1098             if (is->pictq_size > 1) {
1099                 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1100                 assert(nextvp->target_clock >= vp->target_clock);
1101                 next_target= nextvp->target_clock;
1102             } else {
1103                 next_target = vp->target_clock + is->video_clock - vp->pts; // FIXME pass durations cleanly
1104             }
1105             if (framedrop && time > next_target) {
1106                 is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
1107                 if (is->pictq_size > 1 || time > next_target + 0.5) {
1108                     /* update queue size and signal for next picture */
1109                     if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1110                         is->pictq_rindex = 0;
1111
1112                     SDL_LockMutex(is->pictq_mutex);
1113                     is->pictq_size--;
1114                     SDL_CondSignal(is->pictq_cond);
1115                     SDL_UnlockMutex(is->pictq_mutex);
1116                     goto retry;
1117                 }
1118             }
1119
1120             if (is->subtitle_st) {
1121                 if (is->subtitle_stream_changed) {
1122                     SDL_LockMutex(is->subpq_mutex);
1123
1124                     while (is->subpq_size) {
1125                         free_subpicture(&is->subpq[is->subpq_rindex]);
1126
1127                         /* update queue size and signal for next picture */
1128                         if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1129                             is->subpq_rindex = 0;
1130
1131                         is->subpq_size--;
1132                     }
1133                     is->subtitle_stream_changed = 0;
1134
1135                     SDL_CondSignal(is->subpq_cond);
1136                     SDL_UnlockMutex(is->subpq_mutex);
1137                 } else {
1138                     if (is->subpq_size > 0) {
1139                         sp = &is->subpq[is->subpq_rindex];
1140
1141                         if (is->subpq_size > 1)
1142                             sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1143                         else
1144                             sp2 = NULL;
1145
1146                         if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1147                                 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1148                         {
1149                             free_subpicture(sp);
1150
1151                             /* update queue size and signal for next picture */
1152                             if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1153                                 is->subpq_rindex = 0;
1154
1155                             SDL_LockMutex(is->subpq_mutex);
1156                             is->subpq_size--;
1157                             SDL_CondSignal(is->subpq_cond);
1158                             SDL_UnlockMutex(is->subpq_mutex);
1159                         }
1160                     }
1161                 }
1162             }
1163
1164             /* display picture */
1165             if (!display_disable)
1166                 video_display(is);
1167
1168             /* update queue size and signal for next picture */
1169             if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1170                 is->pictq_rindex = 0;
1171
1172             SDL_LockMutex(is->pictq_mutex);
1173             is->pictq_size--;
1174             SDL_CondSignal(is->pictq_cond);
1175             SDL_UnlockMutex(is->pictq_mutex);
1176         }
1177     } else if (is->audio_st) {
1178         /* draw the next audio frame */
1179
1180         /* if only audio stream, then display the audio bars (better
1181            than nothing, just to test the implementation */
1182
1183         /* display picture */
1184         if (!display_disable)
1185             video_display(is);
1186     }
1187     if (show_status) {
1188         static int64_t last_time;
1189         int64_t cur_time;
1190         int aqsize, vqsize, sqsize;
1191         double av_diff;
1192
1193         cur_time = av_gettime();
1194         if (!last_time || (cur_time - last_time) >= 30000) {
1195             aqsize = 0;
1196             vqsize = 0;
1197             sqsize = 0;
1198             if (is->audio_st)
1199                 aqsize = is->audioq.size;
1200             if (is->video_st)
1201                 vqsize = is->videoq.size;
1202             if (is->subtitle_st)
1203                 sqsize = is->subtitleq.size;
1204             av_diff = 0;
1205             if (is->audio_st && is->video_st)
1206                 av_diff = get_audio_clock(is) - get_video_clock(is);
1207             printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1208                    get_master_clock(is), av_diff, FFMAX(is->skip_frames - 1, 0), aqsize / 1024,
1209                    vqsize / 1024, sqsize, is->pts_ctx.num_faulty_dts, is->pts_ctx.num_faulty_pts);
1210             fflush(stdout);
1211             last_time = cur_time;
1212         }
1213     }
1214 }
1215
1216 static void stream_close(VideoState *is)
1217 {
1218     VideoPicture *vp;
1219     int i;
1220     /* XXX: use a special url_shutdown call to abort parse cleanly */
1221     is->abort_request = 1;
1222     SDL_WaitThread(is->parse_tid, NULL);
1223     SDL_WaitThread(is->refresh_tid, NULL);
1224
1225     /* free all pictures */
1226     for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1227         vp = &is->pictq[i];
1228 #if CONFIG_AVFILTER
1229         if (vp->picref) {
1230             avfilter_unref_buffer(vp->picref);
1231             vp->picref = NULL;
1232         }
1233 #endif
1234         if (vp->bmp) {
1235             SDL_FreeYUVOverlay(vp->bmp);
1236             vp->bmp = NULL;
1237         }
1238     }
1239     SDL_DestroyMutex(is->pictq_mutex);
1240     SDL_DestroyCond(is->pictq_cond);
1241     SDL_DestroyMutex(is->subpq_mutex);
1242     SDL_DestroyCond(is->subpq_cond);
1243 #if !CONFIG_AVFILTER
1244     if (is->img_convert_ctx)
1245         sws_freeContext(is->img_convert_ctx);
1246 #endif
1247     av_free(is);
1248 }
1249
1250 static void do_exit(void)
1251 {
1252     if (cur_stream) {
1253         stream_close(cur_stream);
1254         cur_stream = NULL;
1255     }
1256     uninit_opts();
1257 #if CONFIG_AVFILTER
1258     avfilter_uninit();
1259 #endif
1260     avformat_network_deinit();
1261     if (show_status)
1262         printf("\n");
1263     SDL_Quit();
1264     av_log(NULL, AV_LOG_QUIET, "");
1265     exit(0);
1266 }
1267
1268 /* allocate a picture (needs to do that in main thread to avoid
1269    potential locking problems */
1270 static void alloc_picture(void *opaque)
1271 {
1272     VideoState *is = opaque;
1273     VideoPicture *vp;
1274
1275     vp = &is->pictq[is->pictq_windex];
1276
1277     if (vp->bmp)
1278         SDL_FreeYUVOverlay(vp->bmp);
1279
1280 #if CONFIG_AVFILTER
1281     if (vp->picref)
1282         avfilter_unref_buffer(vp->picref);
1283     vp->picref = NULL;
1284
1285     vp->width   = is->out_video_filter->inputs[0]->w;
1286     vp->height  = is->out_video_filter->inputs[0]->h;
1287     vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1288 #else
1289     vp->width   = is->video_st->codec->width;
1290     vp->height  = is->video_st->codec->height;
1291     vp->pix_fmt = is->video_st->codec->pix_fmt;
1292 #endif
1293
1294     vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1295                                    SDL_YV12_OVERLAY,
1296                                    screen);
1297     if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1298         /* SDL allocates a buffer smaller than requested if the video
1299          * overlay hardware is unable to support the requested size. */
1300         fprintf(stderr, "Error: the video system does not support an image\n"
1301                         "size of %dx%d pixels. Try using -lowres or -vf \"scale=w:h\"\n"
1302                         "to reduce the image size.\n", vp->width, vp->height );
1303         do_exit();
1304     }
1305
1306     SDL_LockMutex(is->pictq_mutex);
1307     vp->allocated = 1;
1308     SDL_CondSignal(is->pictq_cond);
1309     SDL_UnlockMutex(is->pictq_mutex);
1310 }
1311
1312 /**
1313  *
1314  * @param pts the dts of the pkt / pts of the frame and guessed if not known
1315  */
1316 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos)
1317 {
1318     VideoPicture *vp;
1319 #if CONFIG_AVFILTER
1320     AVPicture pict_src;
1321 #else
1322     int dst_pix_fmt = PIX_FMT_YUV420P;
1323 #endif
1324     /* wait until we have space to put a new picture */
1325     SDL_LockMutex(is->pictq_mutex);
1326
1327     if (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1328         is->skip_frames = FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0 - FRAME_SKIP_FACTOR));
1329
1330     while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1331            !is->videoq.abort_request) {
1332         SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1333     }
1334     SDL_UnlockMutex(is->pictq_mutex);
1335
1336     if (is->videoq.abort_request)
1337         return -1;
1338
1339     vp = &is->pictq[is->pictq_windex];
1340
1341     /* alloc or resize hardware picture buffer */
1342     if (!vp->bmp || vp->reallocate ||
1343 #if CONFIG_AVFILTER
1344         vp->width  != is->out_video_filter->inputs[0]->w ||
1345         vp->height != is->out_video_filter->inputs[0]->h) {
1346 #else
1347         vp->width != is->video_st->codec->width ||
1348         vp->height != is->video_st->codec->height) {
1349 #endif
1350         SDL_Event event;
1351
1352         vp->allocated  = 0;
1353         vp->reallocate = 0;
1354
1355         /* the allocation must be done in the main thread to avoid
1356            locking problems */
1357         event.type = FF_ALLOC_EVENT;
1358         event.user.data1 = is;
1359         SDL_PushEvent(&event);
1360
1361         /* wait until the picture is allocated */
1362         SDL_LockMutex(is->pictq_mutex);
1363         while (!vp->allocated && !is->videoq.abort_request) {
1364             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1365         }
1366         SDL_UnlockMutex(is->pictq_mutex);
1367
1368         if (is->videoq.abort_request)
1369             return -1;
1370     }
1371
1372     /* if the frame is not skipped, then display it */
1373     if (vp->bmp) {
1374         AVPicture pict;
1375 #if CONFIG_AVFILTER
1376         if (vp->picref)
1377             avfilter_unref_buffer(vp->picref);
1378         vp->picref = src_frame->opaque;
1379 #endif
1380
1381         /* get a pointer on the bitmap */
1382         SDL_LockYUVOverlay (vp->bmp);
1383
1384         memset(&pict, 0, sizeof(AVPicture));
1385         pict.data[0] = vp->bmp->pixels[0];
1386         pict.data[1] = vp->bmp->pixels[2];
1387         pict.data[2] = vp->bmp->pixels[1];
1388
1389         pict.linesize[0] = vp->bmp->pitches[0];
1390         pict.linesize[1] = vp->bmp->pitches[2];
1391         pict.linesize[2] = vp->bmp->pitches[1];
1392
1393 #if CONFIG_AVFILTER
1394         pict_src.data[0] = src_frame->data[0];
1395         pict_src.data[1] = src_frame->data[1];
1396         pict_src.data[2] = src_frame->data[2];
1397
1398         pict_src.linesize[0] = src_frame->linesize[0];
1399         pict_src.linesize[1] = src_frame->linesize[1];
1400         pict_src.linesize[2] = src_frame->linesize[2];
1401
1402         // FIXME use direct rendering
1403         av_picture_copy(&pict, &pict_src,
1404                         vp->pix_fmt, vp->width, vp->height);
1405 #else
1406         sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1407         is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1408             vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1409             dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1410         if (is->img_convert_ctx == NULL) {
1411             fprintf(stderr, "Cannot initialize the conversion context\n");
1412             exit(1);
1413         }
1414         sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1415                   0, vp->height, pict.data, pict.linesize);
1416 #endif
1417         /* update the bitmap content */
1418         SDL_UnlockYUVOverlay(vp->bmp);
1419
1420         vp->pts = pts;
1421         vp->pos = pos;
1422
1423         /* now we can update the picture count */
1424         if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1425             is->pictq_windex = 0;
1426         SDL_LockMutex(is->pictq_mutex);
1427         vp->target_clock = compute_target_time(vp->pts, is);
1428
1429         is->pictq_size++;
1430         SDL_UnlockMutex(is->pictq_mutex);
1431     }
1432     return 0;
1433 }
1434
1435 /**
1436  * compute the exact PTS for the picture if it is omitted in the stream
1437  * @param pts1 the dts of the pkt / pts of the frame
1438  */
1439 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1440 {
1441     double frame_delay, pts;
1442
1443     pts = pts1;
1444
1445     if (pts != 0) {
1446         /* update video clock with pts, if present */
1447         is->video_clock = pts;
1448     } else {
1449         pts = is->video_clock;
1450     }
1451     /* update video clock for next frame */
1452     frame_delay = av_q2d(is->video_st->codec->time_base);
1453     /* for MPEG2, the frame can be repeated, so we update the
1454        clock accordingly */
1455     frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1456     is->video_clock += frame_delay;
1457
1458     return queue_picture(is, src_frame, pts, pos);
1459 }
1460
1461 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1462 {
1463     int got_picture, i;
1464
1465     if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1466         return -1;
1467
1468     if (pkt->data == flush_pkt.data) {
1469         avcodec_flush_buffers(is->video_st->codec);
1470
1471         SDL_LockMutex(is->pictq_mutex);
1472         // Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1473         for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1474             is->pictq[i].target_clock= 0;
1475         }
1476         while (is->pictq_size && !is->videoq.abort_request) {
1477             SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1478         }
1479         is->video_current_pos = -1;
1480         SDL_UnlockMutex(is->pictq_mutex);
1481
1482         init_pts_correction(&is->pts_ctx);
1483         is->frame_last_pts = AV_NOPTS_VALUE;
1484         is->frame_last_delay = 0;
1485         is->frame_timer = (double)av_gettime() / 1000000.0;
1486         is->skip_frames = 1;
1487         is->skip_frames_index = 0;
1488         return 0;
1489     }
1490
1491     avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt);
1492
1493     if (got_picture) {
1494         if (decoder_reorder_pts == -1) {
1495             *pts = guess_correct_pts(&is->pts_ctx, frame->pkt_pts, frame->pkt_dts);
1496         } else if (decoder_reorder_pts) {
1497             *pts = frame->pkt_pts;
1498         } else {
1499             *pts = frame->pkt_dts;
1500         }
1501
1502         if (*pts == AV_NOPTS_VALUE) {
1503             *pts = 0;
1504         }
1505
1506         is->skip_frames_index += 1;
1507         if (is->skip_frames_index >= is->skip_frames) {
1508             is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1509             return 1;
1510         }
1511
1512     }
1513     return 0;
1514 }
1515
1516 #if CONFIG_AVFILTER
1517 typedef struct {
1518     VideoState *is;
1519     AVFrame *frame;
1520     int use_dr1;
1521 } FilterPriv;
1522
1523 static int input_get_buffer(AVCodecContext *codec, AVFrame *pic)
1524 {
1525     AVFilterContext *ctx = codec->opaque;
1526     AVFilterBufferRef  *ref;
1527     int perms = AV_PERM_WRITE;
1528     int i, w, h, stride[AV_NUM_DATA_POINTERS];
1529     unsigned edge;
1530     int pixel_size;
1531
1532     if (codec->codec->capabilities & CODEC_CAP_NEG_LINESIZES)
1533         perms |= AV_PERM_NEG_LINESIZES;
1534
1535     if (pic->buffer_hints & FF_BUFFER_HINTS_VALID) {
1536         if (pic->buffer_hints & FF_BUFFER_HINTS_READABLE) perms |= AV_PERM_READ;
1537         if (pic->buffer_hints & FF_BUFFER_HINTS_PRESERVE) perms |= AV_PERM_PRESERVE;
1538         if (pic->buffer_hints & FF_BUFFER_HINTS_REUSABLE) perms |= AV_PERM_REUSE2;
1539     }
1540     if (pic->reference) perms |= AV_PERM_READ | AV_PERM_PRESERVE;
1541
1542     w = codec->width;
1543     h = codec->height;
1544     avcodec_align_dimensions2(codec, &w, &h, stride);
1545     edge = codec->flags & CODEC_FLAG_EMU_EDGE ? 0 : avcodec_get_edge_width();
1546     w += edge << 1;
1547     h += edge << 1;
1548
1549     if (!(ref = avfilter_get_video_buffer(ctx->outputs[0], perms, w, h)))
1550         return -1;
1551
1552     pixel_size = av_pix_fmt_descriptors[ref->format].comp[0].step_minus1 + 1;
1553     ref->video->w = codec->width;
1554     ref->video->h = codec->height;
1555     for (i = 0; i < 4; i ++) {
1556         unsigned hshift = (i == 1 || i == 2) ? av_pix_fmt_descriptors[ref->format].log2_chroma_w : 0;
1557         unsigned vshift = (i == 1 || i == 2) ? av_pix_fmt_descriptors[ref->format].log2_chroma_h : 0;
1558
1559         if (ref->data[i]) {
1560             ref->data[i]    += ((edge * pixel_size) >> hshift) + ((edge * ref->linesize[i]) >> vshift);
1561         }
1562         pic->data[i]     = ref->data[i];
1563         pic->linesize[i] = ref->linesize[i];
1564     }
1565     pic->opaque = ref;
1566     pic->type   = FF_BUFFER_TYPE_USER;
1567     pic->reordered_opaque = codec->reordered_opaque;
1568     if (codec->pkt) pic->pkt_pts = codec->pkt->pts;
1569     else            pic->pkt_pts = AV_NOPTS_VALUE;
1570     return 0;
1571 }
1572
1573 static void input_release_buffer(AVCodecContext *codec, AVFrame *pic)
1574 {
1575     memset(pic->data, 0, sizeof(pic->data));
1576     avfilter_unref_buffer(pic->opaque);
1577 }
1578
1579 static int input_reget_buffer(AVCodecContext *codec, AVFrame *pic)
1580 {
1581     AVFilterBufferRef *ref = pic->opaque;
1582
1583     if (pic->data[0] == NULL) {
1584         pic->buffer_hints |= FF_BUFFER_HINTS_READABLE;
1585         return codec->get_buffer(codec, pic);
1586     }
1587
1588     if ((codec->width != ref->video->w) || (codec->height != ref->video->h) ||
1589         (codec->pix_fmt != ref->format)) {
1590         av_log(codec, AV_LOG_ERROR, "Picture properties changed.\n");
1591         return -1;
1592     }
1593
1594     pic->reordered_opaque = codec->reordered_opaque;
1595     if (codec->pkt) pic->pkt_pts = codec->pkt->pts;
1596     else            pic->pkt_pts = AV_NOPTS_VALUE;
1597     return 0;
1598 }
1599
1600 static int input_init(AVFilterContext *ctx, const char *args, void *opaque)
1601 {
1602     FilterPriv *priv = ctx->priv;
1603     AVCodecContext *codec;
1604     if (!opaque) return -1;
1605
1606     priv->is = opaque;
1607     codec    = priv->is->video_st->codec;
1608     codec->opaque = ctx;
1609     if (codec->codec->capabilities & CODEC_CAP_DR1) {
1610         priv->use_dr1 = 1;
1611         codec->get_buffer     = input_get_buffer;
1612         codec->release_buffer = input_release_buffer;
1613         codec->reget_buffer   = input_reget_buffer;
1614         codec->thread_safe_callbacks = 1;
1615     }
1616
1617     priv->frame = avcodec_alloc_frame();
1618
1619     return 0;
1620 }
1621
1622 static void input_uninit(AVFilterContext *ctx)
1623 {
1624     FilterPriv *priv = ctx->priv;
1625     av_free(priv->frame);
1626 }
1627
1628 static int input_request_frame(AVFilterLink *link)
1629 {
1630     FilterPriv *priv = link->src->priv;
1631     AVFilterBufferRef *picref;
1632     int64_t pts = 0;
1633     AVPacket pkt;
1634     int ret;
1635
1636     while (!(ret = get_video_frame(priv->is, priv->frame, &pts, &pkt)))
1637         av_free_packet(&pkt);
1638     if (ret < 0)
1639         return -1;
1640
1641     if (priv->use_dr1) {
1642         picref = avfilter_ref_buffer(priv->frame->opaque, ~0);
1643     } else {
1644         picref = avfilter_get_video_buffer(link, AV_PERM_WRITE, link->w, link->h);
1645         av_image_copy(picref->data, picref->linesize,
1646                       priv->frame->data, priv->frame->linesize,
1647                       picref->format, link->w, link->h);
1648     }
1649     av_free_packet(&pkt);
1650
1651     avfilter_copy_frame_props(picref, priv->frame);
1652     picref->pts = pts;
1653
1654     avfilter_start_frame(link, picref);
1655     avfilter_draw_slice(link, 0, link->h, 1);
1656     avfilter_end_frame(link);
1657
1658     return 0;
1659 }
1660
1661 static int input_query_formats(AVFilterContext *ctx)
1662 {
1663     FilterPriv *priv = ctx->priv;
1664     enum PixelFormat pix_fmts[] = {
1665         priv->is->video_st->codec->pix_fmt, PIX_FMT_NONE
1666     };
1667
1668     avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
1669     return 0;
1670 }
1671
1672 static int input_config_props(AVFilterLink *link)
1673 {
1674     FilterPriv *priv  = link->src->priv;
1675     AVCodecContext *c = priv->is->video_st->codec;
1676
1677     link->w = c->width;
1678     link->h = c->height;
1679     link->time_base = priv->is->video_st->time_base;
1680
1681     return 0;
1682 }
1683
1684 static AVFilter input_filter =
1685 {
1686     .name      = "avplay_input",
1687
1688     .priv_size = sizeof(FilterPriv),
1689
1690     .init      = input_init,
1691     .uninit    = input_uninit,
1692
1693     .query_formats = input_query_formats,
1694
1695     .inputs    = (AVFilterPad[]) {{ .name = NULL }},
1696     .outputs   = (AVFilterPad[]) {{ .name = "default",
1697                                     .type = AVMEDIA_TYPE_VIDEO,
1698                                     .request_frame = input_request_frame,
1699                                     .config_props  = input_config_props, },
1700                                   { .name = NULL }},
1701 };
1702
1703 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1704 {
1705     char sws_flags_str[128];
1706     int ret;
1707     SinkContext sink_ctx = { .pix_fmt = PIX_FMT_YUV420P };
1708     AVFilterContext *filt_src = NULL, *filt_out = NULL;
1709     snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1710     graph->scale_sws_opts = av_strdup(sws_flags_str);
1711
1712     if ((ret = avfilter_graph_create_filter(&filt_src, &input_filter, "src",
1713                                             NULL, is, graph)) < 0)
1714         return ret;
1715     if ((ret = avfilter_graph_create_filter(&filt_out, &sink, "out",
1716                                             NULL, &sink_ctx, graph)) < 0)
1717         return ret;
1718
1719     if (vfilters) {
1720         AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
1721         AVFilterInOut *inputs  = av_malloc(sizeof(AVFilterInOut));
1722
1723         outputs->name    = av_strdup("in");
1724         outputs->filter_ctx = filt_src;
1725         outputs->pad_idx = 0;
1726         outputs->next    = NULL;
1727
1728         inputs->name    = av_strdup("out");
1729         inputs->filter_ctx = filt_out;
1730         inputs->pad_idx = 0;
1731         inputs->next    = NULL;
1732
1733         if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
1734             return ret;
1735         av_freep(&vfilters);
1736     } else {
1737         if ((ret = avfilter_link(filt_src, 0, filt_out, 0)) < 0)
1738             return ret;
1739     }
1740
1741     if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1742         return ret;
1743
1744     is->out_video_filter = filt_out;
1745
1746     return ret;
1747 }
1748
1749 #endif  /* CONFIG_AVFILTER */
1750
1751 static int video_thread(void *arg)
1752 {
1753     VideoState *is = arg;
1754     AVFrame *frame = avcodec_alloc_frame();
1755     int64_t pts_int;
1756     double pts;
1757     int ret;
1758
1759 #if CONFIG_AVFILTER
1760     AVFilterGraph *graph = avfilter_graph_alloc();
1761     AVFilterContext *filt_out = NULL;
1762     int64_t pos;
1763     int last_w = is->video_st->codec->width;
1764     int last_h = is->video_st->codec->height;
1765
1766     if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1767         goto the_end;
1768     filt_out = is->out_video_filter;
1769 #endif
1770
1771     for (;;) {
1772 #if !CONFIG_AVFILTER
1773         AVPacket pkt;
1774 #else
1775         AVFilterBufferRef *picref;
1776         AVRational tb;
1777 #endif
1778         while (is->paused && !is->videoq.abort_request)
1779             SDL_Delay(10);
1780 #if CONFIG_AVFILTER
1781         if (   last_w != is->video_st->codec->width
1782             || last_h != is->video_st->codec->height) {
1783             av_dlog(NULL, "Changing size %dx%d -> %dx%d\n", last_w, last_h,
1784                     is->video_st->codec->width, is->video_st->codec->height);
1785             avfilter_graph_free(&graph);
1786             graph = avfilter_graph_alloc();
1787             if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1788                 goto the_end;
1789             filt_out = is->out_video_filter;
1790             last_w = is->video_st->codec->width;
1791             last_h = is->video_st->codec->height;
1792         }
1793         ret = get_filtered_video_frame(filt_out, frame, &picref, &tb);
1794         if (picref) {
1795             pts_int = picref->pts;
1796             pos     = picref->pos;
1797             frame->opaque = picref;
1798         }
1799
1800         if (av_cmp_q(tb, is->video_st->time_base)) {
1801             av_unused int64_t pts1 = pts_int;
1802             pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1803             av_dlog(NULL, "video_thread(): "
1804                     "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1805                     tb.num, tb.den, pts1,
1806                     is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1807         }
1808 #else
1809         ret = get_video_frame(is, frame, &pts_int, &pkt);
1810 #endif
1811
1812         if (ret < 0)
1813             goto the_end;
1814
1815         if (!ret)
1816             continue;
1817
1818         pts = pts_int * av_q2d(is->video_st->time_base);
1819
1820 #if CONFIG_AVFILTER
1821         ret = output_picture2(is, frame, pts, pos);
1822 #else
1823         ret = output_picture2(is, frame, pts,  pkt.pos);
1824         av_free_packet(&pkt);
1825 #endif
1826         if (ret < 0)
1827             goto the_end;
1828
1829         if (step)
1830             if (cur_stream)
1831                 stream_pause(cur_stream);
1832     }
1833  the_end:
1834 #if CONFIG_AVFILTER
1835     avfilter_graph_free(&graph);
1836 #endif
1837     av_free(frame);
1838     return 0;
1839 }
1840
1841 static int subtitle_thread(void *arg)
1842 {
1843     VideoState *is = arg;
1844     SubPicture *sp;
1845     AVPacket pkt1, *pkt = &pkt1;
1846     int got_subtitle;
1847     double pts;
1848     int i, j;
1849     int r, g, b, y, u, v, a;
1850
1851     for (;;) {
1852         while (is->paused && !is->subtitleq.abort_request) {
1853             SDL_Delay(10);
1854         }
1855         if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1856             break;
1857
1858         if (pkt->data == flush_pkt.data) {
1859             avcodec_flush_buffers(is->subtitle_st->codec);
1860             continue;
1861         }
1862         SDL_LockMutex(is->subpq_mutex);
1863         while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1864                !is->subtitleq.abort_request) {
1865             SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1866         }
1867         SDL_UnlockMutex(is->subpq_mutex);
1868
1869         if (is->subtitleq.abort_request)
1870             return 0;
1871
1872         sp = &is->subpq[is->subpq_windex];
1873
1874        /* NOTE: ipts is the PTS of the _first_ picture beginning in
1875            this packet, if any */
1876         pts = 0;
1877         if (pkt->pts != AV_NOPTS_VALUE)
1878             pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
1879
1880         avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1881                                  &got_subtitle, pkt);
1882
1883         if (got_subtitle && sp->sub.format == 0) {
1884             sp->pts = pts;
1885
1886             for (i = 0; i < sp->sub.num_rects; i++)
1887             {
1888                 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1889                 {
1890                     RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1891                     y = RGB_TO_Y_CCIR(r, g, b);
1892                     u = RGB_TO_U_CCIR(r, g, b, 0);
1893                     v = RGB_TO_V_CCIR(r, g, b, 0);
1894                     YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1895                 }
1896             }
1897
1898             /* now we can update the picture count */
1899             if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1900                 is->subpq_windex = 0;
1901             SDL_LockMutex(is->subpq_mutex);
1902             is->subpq_size++;
1903             SDL_UnlockMutex(is->subpq_mutex);
1904         }
1905         av_free_packet(pkt);
1906     }
1907     return 0;
1908 }
1909
1910 /* copy samples for viewing in editor window */
1911 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1912 {
1913     int size, len;
1914
1915     size = samples_size / sizeof(short);
1916     while (size > 0) {
1917         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1918         if (len > size)
1919             len = size;
1920         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1921         samples += len;
1922         is->sample_array_index += len;
1923         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1924             is->sample_array_index = 0;
1925         size -= len;
1926     }
1927 }
1928
1929 /* return the new audio buffer size (samples can be added or deleted
1930    to get better sync if video or external master clock) */
1931 static int synchronize_audio(VideoState *is, short *samples,
1932                              int samples_size1, double pts)
1933 {
1934     int n, samples_size;
1935     double ref_clock;
1936
1937     n = 2 * is->audio_st->codec->channels;
1938     samples_size = samples_size1;
1939
1940     /* if not master, then we try to remove or add samples to correct the clock */
1941     if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1942          is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1943         double diff, avg_diff;
1944         int wanted_size, min_size, max_size, nb_samples;
1945
1946         ref_clock = get_master_clock(is);
1947         diff = get_audio_clock(is) - ref_clock;
1948
1949         if (diff < AV_NOSYNC_THRESHOLD) {
1950             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1951             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1952                 /* not enough measures to have a correct estimate */
1953                 is->audio_diff_avg_count++;
1954             } else {
1955                 /* estimate the A-V difference */
1956                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1957
1958                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1959                     wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1960                     nb_samples = samples_size / n;
1961
1962                     min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1963                     max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1964                     if (wanted_size < min_size)
1965                         wanted_size = min_size;
1966                     else if (wanted_size > max_size)
1967                         wanted_size = max_size;
1968
1969                     /* add or remove samples to correction the synchro */
1970                     if (wanted_size < samples_size) {
1971                         /* remove samples */
1972                         samples_size = wanted_size;
1973                     } else if (wanted_size > samples_size) {
1974                         uint8_t *samples_end, *q;
1975                         int nb;
1976
1977                         /* add samples */
1978                         nb = (samples_size - wanted_size);
1979                         samples_end = (uint8_t *)samples + samples_size - n;
1980                         q = samples_end + n;
1981                         while (nb > 0) {
1982                             memcpy(q, samples_end, n);
1983                             q += n;
1984                             nb -= n;
1985                         }
1986                         samples_size = wanted_size;
1987                     }
1988                 }
1989                 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1990                         diff, avg_diff, samples_size - samples_size1,
1991                         is->audio_clock, is->video_clock, is->audio_diff_threshold);
1992             }
1993         } else {
1994             /* too big difference : may be initial PTS errors, so
1995                reset A-V filter */
1996             is->audio_diff_avg_count = 0;
1997             is->audio_diff_cum       = 0;
1998         }
1999     }
2000
2001     return samples_size;
2002 }
2003
2004 /* decode one audio frame and returns its uncompressed size */
2005 static int audio_decode_frame(VideoState *is, double *pts_ptr)
2006 {
2007     AVPacket *pkt_temp = &is->audio_pkt_temp;
2008     AVPacket *pkt = &is->audio_pkt;
2009     AVCodecContext *dec = is->audio_st->codec;
2010     int n, len1, data_size, got_frame;
2011     double pts;
2012     int new_packet = 0;
2013     int flush_complete = 0;
2014
2015     for (;;) {
2016         /* NOTE: the audio packet can contain several frames */
2017         while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
2018             if (!is->frame) {
2019                 if (!(is->frame = avcodec_alloc_frame()))
2020                     return AVERROR(ENOMEM);
2021             } else
2022                 avcodec_get_frame_defaults(is->frame);
2023
2024             if (flush_complete)
2025                 break;
2026             new_packet = 0;
2027             len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
2028             if (len1 < 0) {
2029                 /* if error, we skip the frame */
2030                 pkt_temp->size = 0;
2031                 break;
2032             }
2033
2034             pkt_temp->data += len1;
2035             pkt_temp->size -= len1;
2036
2037             if (!got_frame) {
2038                 /* stop sending empty packets if the decoder is finished */
2039                 if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
2040                     flush_complete = 1;
2041                 continue;
2042             }
2043             data_size = av_samples_get_buffer_size(NULL, dec->channels,
2044                                                    is->frame->nb_samples,
2045                                                    dec->sample_fmt, 1);
2046
2047             if (dec->sample_fmt != is->audio_src_fmt) {
2048                 if (is->reformat_ctx)
2049                     av_audio_convert_free(is->reformat_ctx);
2050                 is->reformat_ctx= av_audio_convert_alloc(AV_SAMPLE_FMT_S16, 1,
2051                                                          dec->sample_fmt, 1, NULL, 0);
2052                 if (!is->reformat_ctx) {
2053                     fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
2054                         av_get_sample_fmt_name(dec->sample_fmt),
2055                         av_get_sample_fmt_name(AV_SAMPLE_FMT_S16));
2056                         break;
2057                 }
2058                 is->audio_src_fmt= dec->sample_fmt;
2059             }
2060
2061             if (is->reformat_ctx) {
2062                 const void *ibuf[6] = { is->frame->data[0] };
2063                 void *obuf[6];
2064                 int istride[6] = { av_get_bytes_per_sample(dec->sample_fmt) };
2065                 int ostride[6] = { 2 };
2066                 int len= data_size/istride[0];
2067                 obuf[0] = av_realloc(is->audio_buf1, FFALIGN(len * ostride[0], 32));
2068                 if (!obuf[0]) {
2069                     return AVERROR(ENOMEM);
2070                 }
2071                 is->audio_buf1 = obuf[0];
2072                 if (av_audio_convert(is->reformat_ctx, obuf, ostride, ibuf, istride, len) < 0) {
2073                     printf("av_audio_convert() failed\n");
2074                     break;
2075                 }
2076                 is->audio_buf = is->audio_buf1;
2077                 /* FIXME: existing code assume that data_size equals framesize*channels*2
2078                           remove this legacy cruft */
2079                 data_size = len * 2;
2080             } else {
2081                 is->audio_buf = is->frame->data[0];
2082             }
2083
2084             /* if no pts, then compute it */
2085             pts = is->audio_clock;
2086             *pts_ptr = pts;
2087             n = 2 * dec->channels;
2088             is->audio_clock += (double)data_size /
2089                 (double)(n * dec->sample_rate);
2090 #ifdef DEBUG
2091             {
2092                 static double last_clock;
2093                 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
2094                        is->audio_clock - last_clock,
2095                        is->audio_clock, pts);
2096                 last_clock = is->audio_clock;
2097             }
2098 #endif
2099             return data_size;
2100         }
2101
2102         /* free the current packet */
2103         if (pkt->data)
2104             av_free_packet(pkt);
2105         memset(pkt_temp, 0, sizeof(*pkt_temp));
2106
2107         if (is->paused || is->audioq.abort_request) {
2108             return -1;
2109         }
2110
2111         /* read next packet */
2112         if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
2113             return -1;
2114
2115         if (pkt->data == flush_pkt.data) {
2116             avcodec_flush_buffers(dec);
2117             flush_complete = 0;
2118         }
2119
2120         *pkt_temp = *pkt;
2121
2122         /* if update the audio clock with the pts */
2123         if (pkt->pts != AV_NOPTS_VALUE) {
2124             is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2125         }
2126     }
2127 }
2128
2129 /* prepare a new audio buffer */
2130 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2131 {
2132     VideoState *is = opaque;
2133     int audio_size, len1;
2134     double pts;
2135
2136     audio_callback_time = av_gettime();
2137
2138     while (len > 0) {
2139         if (is->audio_buf_index >= is->audio_buf_size) {
2140            audio_size = audio_decode_frame(is, &pts);
2141            if (audio_size < 0) {
2142                 /* if error, just output silence */
2143                is->audio_buf      = is->silence_buf;
2144                is->audio_buf_size = sizeof(is->silence_buf);
2145            } else {
2146                if (is->show_audio)
2147                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2148                audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2149                                               pts);
2150                is->audio_buf_size = audio_size;
2151            }
2152            is->audio_buf_index = 0;
2153         }
2154         len1 = is->audio_buf_size - is->audio_buf_index;
2155         if (len1 > len)
2156             len1 = len;
2157         memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2158         len -= len1;
2159         stream += len1;
2160         is->audio_buf_index += len1;
2161     }
2162 }
2163
2164 /* open a given stream. Return 0 if OK */
2165 static int stream_component_open(VideoState *is, int stream_index)
2166 {
2167     AVFormatContext *ic = is->ic;
2168     AVCodecContext *avctx;
2169     AVCodec *codec;
2170     SDL_AudioSpec wanted_spec, spec;
2171     AVDictionary *opts;
2172     AVDictionaryEntry *t = NULL;
2173
2174     if (stream_index < 0 || stream_index >= ic->nb_streams)
2175         return -1;
2176     avctx = ic->streams[stream_index]->codec;
2177
2178     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index]);
2179
2180     codec = avcodec_find_decoder(avctx->codec_id);
2181     avctx->debug_mv          = debug_mv;
2182     avctx->debug             = debug;
2183     avctx->workaround_bugs   = workaround_bugs;
2184     avctx->lowres            = lowres;
2185     avctx->idct_algo         = idct;
2186     avctx->skip_frame        = skip_frame;
2187     avctx->skip_idct         = skip_idct;
2188     avctx->skip_loop_filter  = skip_loop_filter;
2189     avctx->error_concealment = error_concealment;
2190
2191     if (lowres) avctx->flags  |= CODEC_FLAG_EMU_EDGE;
2192     if (fast)   avctx->flags2 |= CODEC_FLAG2_FAST;
2193
2194     if (!av_dict_get(opts, "threads", NULL, 0))
2195         av_dict_set(&opts, "threads", "auto", 0);
2196     if (!codec ||
2197         avcodec_open2(avctx, codec, &opts) < 0)
2198         return -1;
2199     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2200         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2201         return AVERROR_OPTION_NOT_FOUND;
2202     }
2203
2204     /* prepare audio output */
2205     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2206         wanted_spec.freq = avctx->sample_rate;
2207         wanted_spec.format = AUDIO_S16SYS;
2208         wanted_spec.channels = avctx->channels;
2209         wanted_spec.silence = 0;
2210         wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2211         wanted_spec.callback = sdl_audio_callback;
2212         wanted_spec.userdata = is;
2213         if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2214             fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2215             return -1;
2216         }
2217         is->audio_hw_buf_size = spec.size;
2218         is->audio_src_fmt = AV_SAMPLE_FMT_S16;
2219     }
2220
2221     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2222     switch (avctx->codec_type) {
2223     case AVMEDIA_TYPE_AUDIO:
2224         is->audio_stream = stream_index;
2225         is->audio_st = ic->streams[stream_index];
2226         is->audio_buf_size  = 0;
2227         is->audio_buf_index = 0;
2228
2229         /* init averaging filter */
2230         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2231         is->audio_diff_avg_count = 0;
2232         /* since we do not have a precise anough audio fifo fullness,
2233            we correct audio sync only if larger than this threshold */
2234         is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2235
2236         memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2237         packet_queue_init(&is->audioq);
2238         SDL_PauseAudio(0);
2239         break;
2240     case AVMEDIA_TYPE_VIDEO:
2241         is->video_stream = stream_index;
2242         is->video_st = ic->streams[stream_index];
2243
2244         packet_queue_init(&is->videoq);
2245         is->video_tid = SDL_CreateThread(video_thread, is);
2246         break;
2247     case AVMEDIA_TYPE_SUBTITLE:
2248         is->subtitle_stream = stream_index;
2249         is->subtitle_st = ic->streams[stream_index];
2250         packet_queue_init(&is->subtitleq);
2251
2252         is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2253         break;
2254     default:
2255         break;
2256     }
2257     return 0;
2258 }
2259
2260 static void stream_component_close(VideoState *is, int stream_index)
2261 {
2262     AVFormatContext *ic = is->ic;
2263     AVCodecContext *avctx;
2264
2265     if (stream_index < 0 || stream_index >= ic->nb_streams)
2266         return;
2267     avctx = ic->streams[stream_index]->codec;
2268
2269     switch (avctx->codec_type) {
2270     case AVMEDIA_TYPE_AUDIO:
2271         packet_queue_abort(&is->audioq);
2272
2273         SDL_CloseAudio();
2274
2275         packet_queue_end(&is->audioq);
2276         av_free_packet(&is->audio_pkt);
2277         if (is->reformat_ctx)
2278             av_audio_convert_free(is->reformat_ctx);
2279         is->reformat_ctx = NULL;
2280         av_freep(&is->audio_buf1);
2281         is->audio_buf = NULL;
2282         av_freep(&is->frame);
2283
2284         if (is->rdft) {
2285             av_rdft_end(is->rdft);
2286             av_freep(&is->rdft_data);
2287             is->rdft = NULL;
2288             is->rdft_bits = 0;
2289         }
2290         break;
2291     case AVMEDIA_TYPE_VIDEO:
2292         packet_queue_abort(&is->videoq);
2293
2294         /* note: we also signal this mutex to make sure we deblock the
2295            video thread in all cases */
2296         SDL_LockMutex(is->pictq_mutex);
2297         SDL_CondSignal(is->pictq_cond);
2298         SDL_UnlockMutex(is->pictq_mutex);
2299
2300         SDL_WaitThread(is->video_tid, NULL);
2301
2302         packet_queue_end(&is->videoq);
2303         break;
2304     case AVMEDIA_TYPE_SUBTITLE:
2305         packet_queue_abort(&is->subtitleq);
2306
2307         /* note: we also signal this mutex to make sure we deblock the
2308            video thread in all cases */
2309         SDL_LockMutex(is->subpq_mutex);
2310         is->subtitle_stream_changed = 1;
2311
2312         SDL_CondSignal(is->subpq_cond);
2313         SDL_UnlockMutex(is->subpq_mutex);
2314
2315         SDL_WaitThread(is->subtitle_tid, NULL);
2316
2317         packet_queue_end(&is->subtitleq);
2318         break;
2319     default:
2320         break;
2321     }
2322
2323     ic->streams[stream_index]->discard = AVDISCARD_ALL;
2324     avcodec_close(avctx);
2325     switch (avctx->codec_type) {
2326     case AVMEDIA_TYPE_AUDIO:
2327         is->audio_st = NULL;
2328         is->audio_stream = -1;
2329         break;
2330     case AVMEDIA_TYPE_VIDEO:
2331         is->video_st = NULL;
2332         is->video_stream = -1;
2333         break;
2334     case AVMEDIA_TYPE_SUBTITLE:
2335         is->subtitle_st = NULL;
2336         is->subtitle_stream = -1;
2337         break;
2338     default:
2339         break;
2340     }
2341 }
2342
2343 /* since we have only one decoding thread, we can use a global
2344    variable instead of a thread local variable */
2345 static VideoState *global_video_state;
2346
2347 static int decode_interrupt_cb(void *ctx)
2348 {
2349     return global_video_state && global_video_state->abort_request;
2350 }
2351
2352 /* this thread gets the stream from the disk or the network */
2353 static int decode_thread(void *arg)
2354 {
2355     VideoState *is = arg;
2356     AVFormatContext *ic = NULL;
2357     int err, i, ret;
2358     int st_index[AVMEDIA_TYPE_NB];
2359     AVPacket pkt1, *pkt = &pkt1;
2360     int eof = 0;
2361     int pkt_in_play_range = 0;
2362     AVDictionaryEntry *t;
2363     AVDictionary **opts;
2364     int orig_nb_streams;
2365
2366     memset(st_index, -1, sizeof(st_index));
2367     is->video_stream = -1;
2368     is->audio_stream = -1;
2369     is->subtitle_stream = -1;
2370
2371     global_video_state = is;
2372
2373     ic = avformat_alloc_context();
2374     ic->interrupt_callback.callback = decode_interrupt_cb;
2375     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2376     if (err < 0) {
2377         print_error(is->filename, err);
2378         ret = -1;
2379         goto fail;
2380     }
2381     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2382         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2383         ret = AVERROR_OPTION_NOT_FOUND;
2384         goto fail;
2385     }
2386     is->ic = ic;
2387
2388     if (genpts)
2389         ic->flags |= AVFMT_FLAG_GENPTS;
2390
2391     opts = setup_find_stream_info_opts(ic, codec_opts);
2392     orig_nb_streams = ic->nb_streams;
2393
2394     err = avformat_find_stream_info(ic, opts);
2395     if (err < 0) {
2396         fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2397         ret = -1;
2398         goto fail;
2399     }
2400     for (i = 0; i < orig_nb_streams; i++)
2401         av_dict_free(&opts[i]);
2402     av_freep(&opts);
2403
2404     if (ic->pb)
2405         ic->pb->eof_reached = 0; // FIXME hack, avplay maybe should not use url_feof() to test for the end
2406
2407     if (seek_by_bytes < 0)
2408         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2409
2410     /* if seeking requested, we execute it */
2411     if (start_time != AV_NOPTS_VALUE) {
2412         int64_t timestamp;
2413
2414         timestamp = start_time;
2415         /* add the stream start time */
2416         if (ic->start_time != AV_NOPTS_VALUE)
2417             timestamp += ic->start_time;
2418         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2419         if (ret < 0) {
2420             fprintf(stderr, "%s: could not seek to position %0.3f\n",
2421                     is->filename, (double)timestamp / AV_TIME_BASE);
2422         }
2423     }
2424
2425     for (i = 0; i < ic->nb_streams; i++)
2426         ic->streams[i]->discard = AVDISCARD_ALL;
2427     if (!video_disable)
2428         st_index[AVMEDIA_TYPE_VIDEO] =
2429             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2430                                 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2431     if (!audio_disable)
2432         st_index[AVMEDIA_TYPE_AUDIO] =
2433             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2434                                 wanted_stream[AVMEDIA_TYPE_AUDIO],
2435                                 st_index[AVMEDIA_TYPE_VIDEO],
2436                                 NULL, 0);
2437     if (!video_disable)
2438         st_index[AVMEDIA_TYPE_SUBTITLE] =
2439             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2440                                 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2441                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2442                                  st_index[AVMEDIA_TYPE_AUDIO] :
2443                                  st_index[AVMEDIA_TYPE_VIDEO]),
2444                                 NULL, 0);
2445     if (show_status) {
2446         av_dump_format(ic, 0, is->filename, 0);
2447     }
2448
2449     /* open the streams */
2450     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2451         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2452     }
2453
2454     ret = -1;
2455     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2456         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2457     }
2458     is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2459     if (ret < 0) {
2460         if (!display_disable)
2461             is->show_audio = 2;
2462     }
2463
2464     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2465         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2466     }
2467
2468     if (is->video_stream < 0 && is->audio_stream < 0) {
2469         fprintf(stderr, "%s: could not open codecs\n", is->filename);
2470         ret = -1;
2471         goto fail;
2472     }
2473
2474     for (;;) {
2475         if (is->abort_request)
2476             break;
2477         if (is->paused != is->last_paused) {
2478             is->last_paused = is->paused;
2479             if (is->paused)
2480                 is->read_pause_return = av_read_pause(ic);
2481             else
2482                 av_read_play(ic);
2483         }
2484 #if CONFIG_RTSP_DEMUXER
2485         if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2486             /* wait 10 ms to avoid trying to get another packet */
2487             /* XXX: horrible */
2488             SDL_Delay(10);
2489             continue;
2490         }
2491 #endif
2492         if (is->seek_req) {
2493             int64_t seek_target = is->seek_pos;
2494             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2495             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2496 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2497 //      of the seek_pos/seek_rel variables
2498
2499             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2500             if (ret < 0) {
2501                 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2502             } else {
2503                 if (is->audio_stream >= 0) {
2504                     packet_queue_flush(&is->audioq);
2505                     packet_queue_put(&is->audioq, &flush_pkt);
2506                 }
2507                 if (is->subtitle_stream >= 0) {
2508                     packet_queue_flush(&is->subtitleq);
2509                     packet_queue_put(&is->subtitleq, &flush_pkt);
2510                 }
2511                 if (is->video_stream >= 0) {
2512                     packet_queue_flush(&is->videoq);
2513                     packet_queue_put(&is->videoq, &flush_pkt);
2514                 }
2515             }
2516             is->seek_req = 0;
2517             eof = 0;
2518         }
2519
2520         /* if the queue are full, no need to read more */
2521         if (   is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2522             || (   (is->audioq   .size  > MIN_AUDIOQ_SIZE || is->audio_stream < 0)
2523                 && (is->videoq   .nb_packets > MIN_FRAMES || is->video_stream < 0)
2524                 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0))) {
2525             /* wait 10 ms */
2526             SDL_Delay(10);
2527             continue;
2528         }
2529         if (eof) {
2530             if (is->video_stream >= 0) {
2531                 av_init_packet(pkt);
2532                 pkt->data = NULL;
2533                 pkt->size = 0;
2534                 pkt->stream_index = is->video_stream;
2535                 packet_queue_put(&is->videoq, pkt);
2536             }
2537             if (is->audio_stream >= 0 &&
2538                 is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
2539                 av_init_packet(pkt);
2540                 pkt->data = NULL;
2541                 pkt->size = 0;
2542                 pkt->stream_index = is->audio_stream;
2543                 packet_queue_put(&is->audioq, pkt);
2544             }
2545             SDL_Delay(10);
2546             if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2547                 if (loop != 1 && (!loop || --loop)) {
2548                     stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2549                 } else if (autoexit) {
2550                     ret = AVERROR_EOF;
2551                     goto fail;
2552                 }
2553             }
2554             continue;
2555         }
2556         ret = av_read_frame(ic, pkt);
2557         if (ret < 0) {
2558             if (ret == AVERROR_EOF || (ic->pb && ic->pb->eof_reached))
2559                 eof = 1;
2560             if (ic->pb && ic->pb->error)
2561                 break;
2562             SDL_Delay(100); /* wait for user event */
2563             continue;
2564         }
2565         /* check if packet is in play range specified by user, then queue, otherwise discard */
2566         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2567                 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2568                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2569                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2570                 <= ((double)duration / 1000000);
2571         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2572             packet_queue_put(&is->audioq, pkt);
2573         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2574             packet_queue_put(&is->videoq, pkt);
2575         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2576             packet_queue_put(&is->subtitleq, pkt);
2577         } else {
2578             av_free_packet(pkt);
2579         }
2580     }
2581     /* wait until the end */
2582     while (!is->abort_request) {
2583         SDL_Delay(100);
2584     }
2585
2586     ret = 0;
2587  fail:
2588     /* disable interrupting */
2589     global_video_state = NULL;
2590
2591     /* close each stream */
2592     if (is->audio_stream >= 0)
2593         stream_component_close(is, is->audio_stream);
2594     if (is->video_stream >= 0)
2595         stream_component_close(is, is->video_stream);
2596     if (is->subtitle_stream >= 0)
2597         stream_component_close(is, is->subtitle_stream);
2598     if (is->ic) {
2599         avformat_close_input(&is->ic);
2600     }
2601
2602     if (ret != 0) {
2603         SDL_Event event;
2604
2605         event.type = FF_QUIT_EVENT;
2606         event.user.data1 = is;
2607         SDL_PushEvent(&event);
2608     }
2609     return 0;
2610 }
2611
2612 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2613 {
2614     VideoState *is;
2615
2616     is = av_mallocz(sizeof(VideoState));
2617     if (!is)
2618         return NULL;
2619     av_strlcpy(is->filename, filename, sizeof(is->filename));
2620     is->iformat = iformat;
2621     is->ytop    = 0;
2622     is->xleft   = 0;
2623
2624     /* start video display */
2625     is->pictq_mutex = SDL_CreateMutex();
2626     is->pictq_cond  = SDL_CreateCond();
2627
2628     is->subpq_mutex = SDL_CreateMutex();
2629     is->subpq_cond  = SDL_CreateCond();
2630
2631     is->av_sync_type = av_sync_type;
2632     is->parse_tid    = SDL_CreateThread(decode_thread, is);
2633     if (!is->parse_tid) {
2634         av_free(is);
2635         return NULL;
2636     }
2637     return is;
2638 }
2639
2640 static void stream_cycle_channel(VideoState *is, int codec_type)
2641 {
2642     AVFormatContext *ic = is->ic;
2643     int start_index, stream_index;
2644     AVStream *st;
2645
2646     if (codec_type == AVMEDIA_TYPE_VIDEO)
2647         start_index = is->video_stream;
2648     else if (codec_type == AVMEDIA_TYPE_AUDIO)
2649         start_index = is->audio_stream;
2650     else
2651         start_index = is->subtitle_stream;
2652     if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2653         return;
2654     stream_index = start_index;
2655     for (;;) {
2656         if (++stream_index >= is->ic->nb_streams)
2657         {
2658             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2659             {
2660                 stream_index = -1;
2661                 goto the_end;
2662             } else
2663                 stream_index = 0;
2664         }
2665         if (stream_index == start_index)
2666             return;
2667         st = ic->streams[stream_index];
2668         if (st->codec->codec_type == codec_type) {
2669             /* check that parameters are OK */
2670             switch (codec_type) {
2671             case AVMEDIA_TYPE_AUDIO:
2672                 if (st->codec->sample_rate != 0 &&
2673                     st->codec->channels != 0)
2674                     goto the_end;
2675                 break;
2676             case AVMEDIA_TYPE_VIDEO:
2677             case AVMEDIA_TYPE_SUBTITLE:
2678                 goto the_end;
2679             default:
2680                 break;
2681             }
2682         }
2683     }
2684  the_end:
2685     stream_component_close(is, start_index);
2686     stream_component_open(is, stream_index);
2687 }
2688
2689
2690 static void toggle_full_screen(void)
2691 {
2692     is_full_screen = !is_full_screen;
2693 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2694     /* OS X needs to empty the picture_queue */
2695     for (int i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
2696         cur_stream->pictq[i].reallocate = 1;
2697     }
2698 #endif
2699     video_open(cur_stream);
2700 }
2701
2702 static void toggle_pause(void)
2703 {
2704     if (cur_stream)
2705         stream_pause(cur_stream);
2706     step = 0;
2707 }
2708
2709 static void step_to_next_frame(void)
2710 {
2711     if (cur_stream) {
2712         /* if the stream is paused unpause it, then step */
2713         if (cur_stream->paused)
2714             stream_pause(cur_stream);
2715     }
2716     step = 1;
2717 }
2718
2719 static void toggle_audio_display(void)
2720 {
2721     if (cur_stream) {
2722         int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2723         cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
2724         fill_rectangle(screen,
2725                        cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2726                        bgcolor);
2727         SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2728     }
2729 }
2730
2731 /* handle an event sent by the GUI */
2732 static void event_loop(void)
2733 {
2734     SDL_Event event;
2735     double incr, pos, frac;
2736
2737     for (;;) {
2738         double x;
2739         SDL_WaitEvent(&event);
2740         switch (event.type) {
2741         case SDL_KEYDOWN:
2742             if (exit_on_keydown) {
2743                 do_exit();
2744                 break;
2745             }
2746             switch (event.key.keysym.sym) {
2747             case SDLK_ESCAPE:
2748             case SDLK_q:
2749                 do_exit();
2750                 break;
2751             case SDLK_f:
2752                 toggle_full_screen();
2753                 break;
2754             case SDLK_p:
2755             case SDLK_SPACE:
2756                 toggle_pause();
2757                 break;
2758             case SDLK_s: // S: Step to next frame
2759                 step_to_next_frame();
2760                 break;
2761             case SDLK_a:
2762                 if (cur_stream)
2763                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2764                 break;
2765             case SDLK_v:
2766                 if (cur_stream)
2767                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2768                 break;
2769             case SDLK_t:
2770                 if (cur_stream)
2771                     stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2772                 break;
2773             case SDLK_w:
2774                 toggle_audio_display();
2775                 break;
2776             case SDLK_LEFT:
2777                 incr = -10.0;
2778                 goto do_seek;
2779             case SDLK_RIGHT:
2780                 incr = 10.0;
2781                 goto do_seek;
2782             case SDLK_UP:
2783                 incr = 60.0;
2784                 goto do_seek;
2785             case SDLK_DOWN:
2786                 incr = -60.0;
2787             do_seek:
2788                 if (cur_stream) {
2789                     if (seek_by_bytes) {
2790                         if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2791                             pos = cur_stream->video_current_pos;
2792                         } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2793                             pos = cur_stream->audio_pkt.pos;
2794                         } else
2795                             pos = avio_tell(cur_stream->ic->pb);
2796                         if (cur_stream->ic->bit_rate)
2797                             incr *= cur_stream->ic->bit_rate / 8.0;
2798                         else
2799                             incr *= 180000.0;
2800                         pos += incr;
2801                         stream_seek(cur_stream, pos, incr, 1);
2802                     } else {
2803                         pos = get_master_clock(cur_stream);
2804                         pos += incr;
2805                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2806                     }
2807                 }
2808                 break;
2809             default:
2810                 break;
2811             }
2812             break;
2813         case SDL_MOUSEBUTTONDOWN:
2814             if (exit_on_mousedown) {
2815                 do_exit();
2816                 break;
2817             }
2818         case SDL_MOUSEMOTION:
2819             if (event.type == SDL_MOUSEBUTTONDOWN) {
2820                 x = event.button.x;
2821             } else {
2822                 if (event.motion.state != SDL_PRESSED)
2823                     break;
2824                 x = event.motion.x;
2825             }
2826             if (cur_stream) {
2827                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2828                     uint64_t size =  avio_size(cur_stream->ic->pb);
2829                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2830                 } else {
2831                     int64_t ts;
2832                     int ns, hh, mm, ss;
2833                     int tns, thh, tmm, tss;
2834                     tns  = cur_stream->ic->duration / 1000000LL;
2835                     thh  = tns / 3600;
2836                     tmm  = (tns % 3600) / 60;
2837                     tss  = (tns % 60);
2838                     frac = x / cur_stream->width;
2839                     ns   = frac * tns;
2840                     hh   = ns / 3600;
2841                     mm   = (ns % 3600) / 60;
2842                     ss   = (ns % 60);
2843                     fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
2844                             hh, mm, ss, thh, tmm, tss);
2845                     ts = frac * cur_stream->ic->duration;
2846                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2847                         ts += cur_stream->ic->start_time;
2848                     stream_seek(cur_stream, ts, 0, 0);
2849                 }
2850             }
2851             break;
2852         case SDL_VIDEORESIZE:
2853             if (cur_stream) {
2854                 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2855                                           SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2856                 screen_width  = cur_stream->width  = event.resize.w;
2857                 screen_height = cur_stream->height = event.resize.h;
2858             }
2859             break;
2860         case SDL_QUIT:
2861         case FF_QUIT_EVENT:
2862             do_exit();
2863             break;
2864         case FF_ALLOC_EVENT:
2865             video_open(event.user.data1);
2866             alloc_picture(event.user.data1);
2867             break;
2868         case FF_REFRESH_EVENT:
2869             video_refresh_timer(event.user.data1);
2870             cur_stream->refresh = 0;
2871             break;
2872         default:
2873             break;
2874         }
2875     }
2876 }
2877
2878 static int opt_frame_size(const char *opt, const char *arg)
2879 {
2880     av_log(NULL, AV_LOG_ERROR,
2881            "Option '%s' has been removed, use private format options instead\n", opt);
2882     return AVERROR(EINVAL);
2883 }
2884
2885 static int opt_width(const char *opt, const char *arg)
2886 {
2887     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2888     return 0;
2889 }
2890
2891 static int opt_height(const char *opt, const char *arg)
2892 {
2893     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2894     return 0;
2895 }
2896
2897 static int opt_format(const char *opt, const char *arg)
2898 {
2899     file_iformat = av_find_input_format(arg);
2900     if (!file_iformat) {
2901         fprintf(stderr, "Unknown input format: %s\n", arg);
2902         return AVERROR(EINVAL);
2903     }
2904     return 0;
2905 }
2906
2907 static int opt_frame_pix_fmt(const char *opt, const char *arg)
2908 {
2909     av_log(NULL, AV_LOG_ERROR,
2910            "Option '%s' has been removed, use private format options instead\n", opt);
2911     return AVERROR(EINVAL);
2912 }
2913
2914 static int opt_sync(const char *opt, const char *arg)
2915 {
2916     if (!strcmp(arg, "audio"))
2917         av_sync_type = AV_SYNC_AUDIO_MASTER;
2918     else if (!strcmp(arg, "video"))
2919         av_sync_type = AV_SYNC_VIDEO_MASTER;
2920     else if (!strcmp(arg, "ext"))
2921         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2922     else {
2923         fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2924         exit(1);
2925     }
2926     return 0;
2927 }
2928
2929 static int opt_seek(const char *opt, const char *arg)
2930 {
2931     start_time = parse_time_or_die(opt, arg, 1);
2932     return 0;
2933 }
2934
2935 static int opt_duration(const char *opt, const char *arg)
2936 {
2937     duration = parse_time_or_die(opt, arg, 1);
2938     return 0;
2939 }
2940
2941 static int opt_debug(const char *opt, const char *arg)
2942 {
2943     av_log_set_level(99);
2944     debug = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2945     return 0;
2946 }
2947
2948 static int opt_vismv(const char *opt, const char *arg)
2949 {
2950     debug_mv = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2951     return 0;
2952 }
2953
2954 static const OptionDef options[] = {
2955 #include "cmdutils_common_opts.h"
2956     { "x", HAS_ARG, { (void*)opt_width }, "force displayed width", "width" },
2957     { "y", HAS_ARG, { (void*)opt_height }, "force displayed height", "height" },
2958     { "s", HAS_ARG | OPT_VIDEO, { (void*)opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2959     { "fs", OPT_BOOL, { (void*)&is_full_screen }, "force full screen" },
2960     { "an", OPT_BOOL, { (void*)&audio_disable }, "disable audio" },
2961     { "vn", OPT_BOOL, { (void*)&video_disable }, "disable video" },
2962     { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2963     { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2964     { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2965     { "ss", HAS_ARG, { (void*)&opt_seek }, "seek to a given position in seconds", "pos" },
2966     { "t", HAS_ARG, { (void*)&opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
2967     { "bytes", OPT_INT | HAS_ARG, { (void*)&seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2968     { "nodisp", OPT_BOOL, { (void*)&display_disable }, "disable graphical display" },
2969     { "f", HAS_ARG, { (void*)opt_format }, "force format", "fmt" },
2970     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { (void*)opt_frame_pix_fmt }, "set pixel format", "format" },
2971     { "stats", OPT_BOOL | OPT_EXPERT, { (void*)&show_status }, "show status", "" },
2972     { "debug", HAS_ARG | OPT_EXPERT, { (void*)opt_debug }, "print specific debug info", "" },
2973     { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&workaround_bugs }, "workaround bugs", "" },
2974     { "vismv", HAS_ARG | OPT_EXPERT, { (void*)opt_vismv }, "visualize motion vectors", "" },
2975     { "fast", OPT_BOOL | OPT_EXPERT, { (void*)&fast }, "non spec compliant optimizations", "" },
2976     { "genpts", OPT_BOOL | OPT_EXPERT, { (void*)&genpts }, "generate pts", "" },
2977     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2978     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&lowres }, "", "" },
2979     { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_loop_filter }, "", "" },
2980     { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_frame }, "", "" },
2981     { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_idct }, "", "" },
2982     { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&idct }, "set idct algo",  "algo" },
2983     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&error_concealment }, "set error concealment options",  "bit_mask" },
2984     { "sync", HAS_ARG | OPT_EXPERT, { (void*)opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
2985     { "autoexit", OPT_BOOL | OPT_EXPERT, { (void*)&autoexit }, "exit at the end", "" },
2986     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_keydown }, "exit on key down", "" },
2987     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_mousedown }, "exit on mouse down", "" },
2988     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&loop }, "set number of times the playback shall be looped", "loop count" },
2989     { "framedrop", OPT_BOOL | OPT_EXPERT, { (void*)&framedrop }, "drop frames when cpu is too slow", "" },
2990     { "window_title", OPT_STRING | HAS_ARG, { (void*)&window_title }, "set window title", "window title" },
2991 #if CONFIG_AVFILTER
2992     { "vf", OPT_STRING | HAS_ARG, { (void*)&vfilters }, "video filters", "filter list" },
2993 #endif
2994     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { (void*)&rdftspeed }, "rdft speed", "msecs" },
2995     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { (void*)opt_default }, "generic catch all option", "" },
2996     { "i", 0, { NULL }, "avconv compatibility dummy option", ""},
2997     { NULL, },
2998 };
2999
3000 static void show_usage(void)
3001 {
3002     printf("Simple media player\n");
3003     printf("usage: %s [options] input_file\n", program_name);
3004     printf("\n");
3005 }
3006
3007 static void show_help(void)
3008 {
3009     av_log_set_callback(log_callback_help);
3010     show_usage();
3011     show_help_options(options, "Main options:\n",
3012                       OPT_EXPERT, 0);
3013     show_help_options(options, "\nAdvanced options:\n",
3014                       OPT_EXPERT, OPT_EXPERT);
3015     printf("\n");
3016     show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3017     show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
3018 #if !CONFIG_AVFILTER
3019     show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
3020 #endif
3021     printf("\nWhile playing:\n"
3022            "q, ESC              quit\n"
3023            "f                   toggle full screen\n"
3024            "p, SPC              pause\n"
3025            "a                   cycle audio channel\n"
3026            "v                   cycle video channel\n"
3027            "t                   cycle subtitle channel\n"
3028            "w                   show audio waves\n"
3029            "s                   activate frame-step mode\n"
3030            "left/right          seek backward/forward 10 seconds\n"
3031            "down/up             seek backward/forward 1 minute\n"
3032            "mouse click         seek to percentage in file corresponding to fraction of width\n"
3033            );
3034 }
3035
3036 static void opt_input_file(void *optctx, const char *filename)
3037 {
3038     if (input_filename) {
3039         fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3040                 filename, input_filename);
3041         exit(1);
3042     }
3043     if (!strcmp(filename, "-"))
3044         filename = "pipe:";
3045     input_filename = filename;
3046 }
3047
3048 /* Called from the main */
3049 int main(int argc, char **argv)
3050 {
3051     int flags;
3052
3053     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3054     parse_loglevel(argc, argv, options);
3055
3056     /* register all codecs, demux and protocols */
3057     avcodec_register_all();
3058 #if CONFIG_AVDEVICE
3059     avdevice_register_all();
3060 #endif
3061 #if CONFIG_AVFILTER
3062     avfilter_register_all();
3063 #endif
3064     av_register_all();
3065     avformat_network_init();
3066
3067     init_opts();
3068
3069     show_banner();
3070
3071     parse_options(NULL, argc, argv, options, opt_input_file);
3072
3073     if (!input_filename) {
3074         show_usage();
3075         fprintf(stderr, "An input file must be specified\n");
3076         fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3077         exit(1);
3078     }
3079
3080     if (display_disable) {
3081         video_disable = 1;
3082     }
3083     flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3084 #if !defined(__MINGW32__) && !defined(__APPLE__)
3085     flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3086 #endif
3087     if (SDL_Init (flags)) {
3088         fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3089         exit(1);
3090     }
3091
3092     if (!display_disable) {
3093 #if HAVE_SDL_VIDEO_SIZE
3094         const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3095         fs_screen_width = vi->current_w;
3096         fs_screen_height = vi->current_h;
3097 #endif
3098     }
3099
3100     SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3101     SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3102     SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3103
3104     av_init_packet(&flush_pkt);
3105     flush_pkt.data = "FLUSH";
3106
3107     cur_stream = stream_open(input_filename, file_iformat);
3108
3109     event_loop();
3110
3111     /* never returns */
3112
3113     return 0;
3114 }