avcodec/dxv: add support for "high" quality mode
[ffmpeg.git] / fftools / ffplay.c
1 /*
2  * Copyright (c) 2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * simple media player based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <inttypes.h>
28 #include <math.h>
29 #include <limits.h>
30 #include <signal.h>
31 #include <stdint.h>
32
33 #include "libavutil/avstring.h"
34 #include "libavutil/eval.h"
35 #include "libavutil/mathematics.h"
36 #include "libavutil/pixdesc.h"
37 #include "libavutil/imgutils.h"
38 #include "libavutil/dict.h"
39 #include "libavutil/parseutils.h"
40 #include "libavutil/samplefmt.h"
41 #include "libavutil/avassert.h"
42 #include "libavutil/time.h"
43 #include "libavformat/avformat.h"
44 #include "libavdevice/avdevice.h"
45 #include "libswscale/swscale.h"
46 #include "libavutil/opt.h"
47 #include "libavcodec/avfft.h"
48 #include "libswresample/swresample.h"
49
50 #if CONFIG_AVFILTER
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/buffersink.h"
53 # include "libavfilter/buffersrc.h"
54 #endif
55
56 #include <SDL.h>
57 #include <SDL_thread.h>
58
59 #include "cmdutils.h"
60
61 #include <assert.h>
62
63 const char program_name[] = "ffplay";
64 const int program_birth_year = 2003;
65
66 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
67 #define MIN_FRAMES 25
68 #define EXTERNAL_CLOCK_MIN_FRAMES 2
69 #define EXTERNAL_CLOCK_MAX_FRAMES 10
70
71 /* Minimum SDL audio buffer size, in samples. */
72 #define SDL_AUDIO_MIN_BUFFER_SIZE 512
73 /* Calculate actual buffer size keeping in mind not cause too frequent audio callbacks */
74 #define SDL_AUDIO_MAX_CALLBACKS_PER_SEC 30
75
76 /* Step size for volume control in dB */
77 #define SDL_VOLUME_STEP (0.75)
78
79 /* no AV sync correction is done if below the minimum AV sync threshold */
80 #define AV_SYNC_THRESHOLD_MIN 0.04
81 /* AV sync correction is done if above the maximum AV sync threshold */
82 #define AV_SYNC_THRESHOLD_MAX 0.1
83 /* If a frame duration is longer than this, it will not be duplicated to compensate AV sync */
84 #define AV_SYNC_FRAMEDUP_THRESHOLD 0.1
85 /* no AV correction is done if too big error */
86 #define AV_NOSYNC_THRESHOLD 10.0
87
88 /* maximum audio speed change to get correct sync */
89 #define SAMPLE_CORRECTION_PERCENT_MAX 10
90
91 /* external clock speed adjustment constants for realtime sources based on buffer fullness */
92 #define EXTERNAL_CLOCK_SPEED_MIN  0.900
93 #define EXTERNAL_CLOCK_SPEED_MAX  1.010
94 #define EXTERNAL_CLOCK_SPEED_STEP 0.001
95
96 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
97 #define AUDIO_DIFF_AVG_NB   20
98
99 /* polls for possible required screen refresh at least this often, should be less than 1/fps */
100 #define REFRESH_RATE 0.01
101
102 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
103 /* TODO: We assume that a decoded and resampled frame fits into this buffer */
104 #define SAMPLE_ARRAY_SIZE (8 * 65536)
105
106 #define CURSOR_HIDE_DELAY 1000000
107
108 #define USE_ONEPASS_SUBTITLE_RENDER 1
109
110 static unsigned sws_flags = SWS_BICUBIC;
111
112 typedef struct MyAVPacketList {
113     AVPacket pkt;
114     struct MyAVPacketList *next;
115     int serial;
116 } MyAVPacketList;
117
118 typedef struct PacketQueue {
119     MyAVPacketList *first_pkt, *last_pkt;
120     int nb_packets;
121     int size;
122     int64_t duration;
123     int abort_request;
124     int serial;
125     SDL_mutex *mutex;
126     SDL_cond *cond;
127 } PacketQueue;
128
129 #define VIDEO_PICTURE_QUEUE_SIZE 3
130 #define SUBPICTURE_QUEUE_SIZE 16
131 #define SAMPLE_QUEUE_SIZE 9
132 #define FRAME_QUEUE_SIZE FFMAX(SAMPLE_QUEUE_SIZE, FFMAX(VIDEO_PICTURE_QUEUE_SIZE, SUBPICTURE_QUEUE_SIZE))
133
134 typedef struct AudioParams {
135     int freq;
136     int channels;
137     int64_t channel_layout;
138     enum AVSampleFormat fmt;
139     int frame_size;
140     int bytes_per_sec;
141 } AudioParams;
142
143 typedef struct Clock {
144     double pts;           /* clock base */
145     double pts_drift;     /* clock base minus time at which we updated the clock */
146     double last_updated;
147     double speed;
148     int serial;           /* clock is based on a packet with this serial */
149     int paused;
150     int *queue_serial;    /* pointer to the current packet queue serial, used for obsolete clock detection */
151 } Clock;
152
153 /* Common struct for handling all types of decoded data and allocated render buffers. */
154 typedef struct Frame {
155     AVFrame *frame;
156     AVSubtitle sub;
157     int serial;
158     double pts;           /* presentation timestamp for the frame */
159     double duration;      /* estimated duration of the frame */
160     int64_t pos;          /* byte position of the frame in the input file */
161     int width;
162     int height;
163     int format;
164     AVRational sar;
165     int uploaded;
166     int flip_v;
167 } Frame;
168
169 typedef struct FrameQueue {
170     Frame queue[FRAME_QUEUE_SIZE];
171     int rindex;
172     int windex;
173     int size;
174     int max_size;
175     int keep_last;
176     int rindex_shown;
177     SDL_mutex *mutex;
178     SDL_cond *cond;
179     PacketQueue *pktq;
180 } FrameQueue;
181
182 enum {
183     AV_SYNC_AUDIO_MASTER, /* default choice */
184     AV_SYNC_VIDEO_MASTER,
185     AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
186 };
187
188 typedef struct Decoder {
189     AVPacket pkt;
190     PacketQueue *queue;
191     AVCodecContext *avctx;
192     int pkt_serial;
193     int finished;
194     int packet_pending;
195     SDL_cond *empty_queue_cond;
196     int64_t start_pts;
197     AVRational start_pts_tb;
198     int64_t next_pts;
199     AVRational next_pts_tb;
200     SDL_Thread *decoder_tid;
201 } Decoder;
202
203 typedef struct VideoState {
204     SDL_Thread *read_tid;
205     AVInputFormat *iformat;
206     int abort_request;
207     int force_refresh;
208     int paused;
209     int last_paused;
210     int queue_attachments_req;
211     int seek_req;
212     int seek_flags;
213     int64_t seek_pos;
214     int64_t seek_rel;
215     int read_pause_return;
216     AVFormatContext *ic;
217     int realtime;
218
219     Clock audclk;
220     Clock vidclk;
221     Clock extclk;
222
223     FrameQueue pictq;
224     FrameQueue subpq;
225     FrameQueue sampq;
226
227     Decoder auddec;
228     Decoder viddec;
229     Decoder subdec;
230
231     int audio_stream;
232
233     int av_sync_type;
234
235     double audio_clock;
236     int audio_clock_serial;
237     double audio_diff_cum; /* used for AV difference average computation */
238     double audio_diff_avg_coef;
239     double audio_diff_threshold;
240     int audio_diff_avg_count;
241     AVStream *audio_st;
242     PacketQueue audioq;
243     int audio_hw_buf_size;
244     uint8_t *audio_buf;
245     uint8_t *audio_buf1;
246     unsigned int audio_buf_size; /* in bytes */
247     unsigned int audio_buf1_size;
248     int audio_buf_index; /* in bytes */
249     int audio_write_buf_size;
250     int audio_volume;
251     int muted;
252     struct AudioParams audio_src;
253 #if CONFIG_AVFILTER
254     struct AudioParams audio_filter_src;
255 #endif
256     struct AudioParams audio_tgt;
257     struct SwrContext *swr_ctx;
258     int frame_drops_early;
259     int frame_drops_late;
260
261     enum ShowMode {
262         SHOW_MODE_NONE = -1, SHOW_MODE_VIDEO = 0, SHOW_MODE_WAVES, SHOW_MODE_RDFT, SHOW_MODE_NB
263     } show_mode;
264     int16_t sample_array[SAMPLE_ARRAY_SIZE];
265     int sample_array_index;
266     int last_i_start;
267     RDFTContext *rdft;
268     int rdft_bits;
269     FFTSample *rdft_data;
270     int xpos;
271     double last_vis_time;
272     SDL_Texture *vis_texture;
273     SDL_Texture *sub_texture;
274     SDL_Texture *vid_texture;
275
276     int subtitle_stream;
277     AVStream *subtitle_st;
278     PacketQueue subtitleq;
279
280     double frame_timer;
281     double frame_last_returned_time;
282     double frame_last_filter_delay;
283     int video_stream;
284     AVStream *video_st;
285     PacketQueue videoq;
286     double max_frame_duration;      // maximum duration of a frame - above this, we consider the jump a timestamp discontinuity
287     struct SwsContext *img_convert_ctx;
288     struct SwsContext *sub_convert_ctx;
289     int eof;
290
291     char *filename;
292     int width, height, xleft, ytop;
293     int step;
294
295 #if CONFIG_AVFILTER
296     int vfilter_idx;
297     AVFilterContext *in_video_filter;   // the first filter in the video chain
298     AVFilterContext *out_video_filter;  // the last filter in the video chain
299     AVFilterContext *in_audio_filter;   // the first filter in the audio chain
300     AVFilterContext *out_audio_filter;  // the last filter in the audio chain
301     AVFilterGraph *agraph;              // audio filter graph
302 #endif
303
304     int last_video_stream, last_audio_stream, last_subtitle_stream;
305
306     SDL_cond *continue_read_thread;
307 } VideoState;
308
309 /* options specified by the user */
310 static AVInputFormat *file_iformat;
311 static const char *input_filename;
312 static const char *window_title;
313 static int default_width  = 640;
314 static int default_height = 480;
315 static int screen_width  = 0;
316 static int screen_height = 0;
317 static int audio_disable;
318 static int video_disable;
319 static int subtitle_disable;
320 static const char* wanted_stream_spec[AVMEDIA_TYPE_NB] = {0};
321 static int seek_by_bytes = -1;
322 static int display_disable;
323 static int borderless;
324 static int startup_volume = 100;
325 static int show_status = 1;
326 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
327 static int64_t start_time = AV_NOPTS_VALUE;
328 static int64_t duration = AV_NOPTS_VALUE;
329 static int fast = 0;
330 static int genpts = 0;
331 static int lowres = 0;
332 static int decoder_reorder_pts = -1;
333 static int autoexit;
334 static int exit_on_keydown;
335 static int exit_on_mousedown;
336 static int loop = 1;
337 static int framedrop = -1;
338 static int infinite_buffer = -1;
339 static enum ShowMode show_mode = SHOW_MODE_NONE;
340 static const char *audio_codec_name;
341 static const char *subtitle_codec_name;
342 static const char *video_codec_name;
343 double rdftspeed = 0.02;
344 static int64_t cursor_last_shown;
345 static int cursor_hidden = 0;
346 #if CONFIG_AVFILTER
347 static const char **vfilters_list = NULL;
348 static int nb_vfilters = 0;
349 static char *afilters = NULL;
350 #endif
351 static int autorotate = 1;
352 static int find_stream_info = 1;
353
354 /* current context */
355 static int is_full_screen;
356 static int64_t audio_callback_time;
357
358 static AVPacket flush_pkt;
359
360 #define FF_QUIT_EVENT    (SDL_USEREVENT + 2)
361
362 static SDL_Window *window;
363 static SDL_Renderer *renderer;
364 static SDL_RendererInfo renderer_info = {0};
365 static SDL_AudioDeviceID audio_dev;
366
367 static const struct TextureFormatEntry {
368     enum AVPixelFormat format;
369     int texture_fmt;
370 } sdl_texture_format_map[] = {
371     { AV_PIX_FMT_RGB8,           SDL_PIXELFORMAT_RGB332 },
372     { AV_PIX_FMT_RGB444,         SDL_PIXELFORMAT_RGB444 },
373     { AV_PIX_FMT_RGB555,         SDL_PIXELFORMAT_RGB555 },
374     { AV_PIX_FMT_BGR555,         SDL_PIXELFORMAT_BGR555 },
375     { AV_PIX_FMT_RGB565,         SDL_PIXELFORMAT_RGB565 },
376     { AV_PIX_FMT_BGR565,         SDL_PIXELFORMAT_BGR565 },
377     { AV_PIX_FMT_RGB24,          SDL_PIXELFORMAT_RGB24 },
378     { AV_PIX_FMT_BGR24,          SDL_PIXELFORMAT_BGR24 },
379     { AV_PIX_FMT_0RGB32,         SDL_PIXELFORMAT_RGB888 },
380     { AV_PIX_FMT_0BGR32,         SDL_PIXELFORMAT_BGR888 },
381     { AV_PIX_FMT_NE(RGB0, 0BGR), SDL_PIXELFORMAT_RGBX8888 },
382     { AV_PIX_FMT_NE(BGR0, 0RGB), SDL_PIXELFORMAT_BGRX8888 },
383     { AV_PIX_FMT_RGB32,          SDL_PIXELFORMAT_ARGB8888 },
384     { AV_PIX_FMT_RGB32_1,        SDL_PIXELFORMAT_RGBA8888 },
385     { AV_PIX_FMT_BGR32,          SDL_PIXELFORMAT_ABGR8888 },
386     { AV_PIX_FMT_BGR32_1,        SDL_PIXELFORMAT_BGRA8888 },
387     { AV_PIX_FMT_YUV420P,        SDL_PIXELFORMAT_IYUV },
388     { AV_PIX_FMT_YUYV422,        SDL_PIXELFORMAT_YUY2 },
389     { AV_PIX_FMT_UYVY422,        SDL_PIXELFORMAT_UYVY },
390     { AV_PIX_FMT_NONE,           SDL_PIXELFORMAT_UNKNOWN },
391 };
392
393 #if CONFIG_AVFILTER
394 static int opt_add_vfilter(void *optctx, const char *opt, const char *arg)
395 {
396     GROW_ARRAY(vfilters_list, nb_vfilters);
397     vfilters_list[nb_vfilters - 1] = arg;
398     return 0;
399 }
400 #endif
401
402 static inline
403 int cmp_audio_fmts(enum AVSampleFormat fmt1, int64_t channel_count1,
404                    enum AVSampleFormat fmt2, int64_t channel_count2)
405 {
406     /* If channel count == 1, planar and non-planar formats are the same */
407     if (channel_count1 == 1 && channel_count2 == 1)
408         return av_get_packed_sample_fmt(fmt1) != av_get_packed_sample_fmt(fmt2);
409     else
410         return channel_count1 != channel_count2 || fmt1 != fmt2;
411 }
412
413 static inline
414 int64_t get_valid_channel_layout(int64_t channel_layout, int channels)
415 {
416     if (channel_layout && av_get_channel_layout_nb_channels(channel_layout) == channels)
417         return channel_layout;
418     else
419         return 0;
420 }
421
422 static int packet_queue_put_private(PacketQueue *q, AVPacket *pkt)
423 {
424     MyAVPacketList *pkt1;
425
426     if (q->abort_request)
427        return -1;
428
429     pkt1 = av_malloc(sizeof(MyAVPacketList));
430     if (!pkt1)
431         return -1;
432     pkt1->pkt = *pkt;
433     pkt1->next = NULL;
434     if (pkt == &flush_pkt)
435         q->serial++;
436     pkt1->serial = q->serial;
437
438     if (!q->last_pkt)
439         q->first_pkt = pkt1;
440     else
441         q->last_pkt->next = pkt1;
442     q->last_pkt = pkt1;
443     q->nb_packets++;
444     q->size += pkt1->pkt.size + sizeof(*pkt1);
445     q->duration += pkt1->pkt.duration;
446     /* XXX: should duplicate packet data in DV case */
447     SDL_CondSignal(q->cond);
448     return 0;
449 }
450
451 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
452 {
453     int ret;
454
455     SDL_LockMutex(q->mutex);
456     ret = packet_queue_put_private(q, pkt);
457     SDL_UnlockMutex(q->mutex);
458
459     if (pkt != &flush_pkt && ret < 0)
460         av_packet_unref(pkt);
461
462     return ret;
463 }
464
465 static int packet_queue_put_nullpacket(PacketQueue *q, int stream_index)
466 {
467     AVPacket pkt1, *pkt = &pkt1;
468     av_init_packet(pkt);
469     pkt->data = NULL;
470     pkt->size = 0;
471     pkt->stream_index = stream_index;
472     return packet_queue_put(q, pkt);
473 }
474
475 /* packet queue handling */
476 static int packet_queue_init(PacketQueue *q)
477 {
478     memset(q, 0, sizeof(PacketQueue));
479     q->mutex = SDL_CreateMutex();
480     if (!q->mutex) {
481         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
482         return AVERROR(ENOMEM);
483     }
484     q->cond = SDL_CreateCond();
485     if (!q->cond) {
486         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
487         return AVERROR(ENOMEM);
488     }
489     q->abort_request = 1;
490     return 0;
491 }
492
493 static void packet_queue_flush(PacketQueue *q)
494 {
495     MyAVPacketList *pkt, *pkt1;
496
497     SDL_LockMutex(q->mutex);
498     for (pkt = q->first_pkt; pkt; pkt = pkt1) {
499         pkt1 = pkt->next;
500         av_packet_unref(&pkt->pkt);
501         av_freep(&pkt);
502     }
503     q->last_pkt = NULL;
504     q->first_pkt = NULL;
505     q->nb_packets = 0;
506     q->size = 0;
507     q->duration = 0;
508     SDL_UnlockMutex(q->mutex);
509 }
510
511 static void packet_queue_destroy(PacketQueue *q)
512 {
513     packet_queue_flush(q);
514     SDL_DestroyMutex(q->mutex);
515     SDL_DestroyCond(q->cond);
516 }
517
518 static void packet_queue_abort(PacketQueue *q)
519 {
520     SDL_LockMutex(q->mutex);
521
522     q->abort_request = 1;
523
524     SDL_CondSignal(q->cond);
525
526     SDL_UnlockMutex(q->mutex);
527 }
528
529 static void packet_queue_start(PacketQueue *q)
530 {
531     SDL_LockMutex(q->mutex);
532     q->abort_request = 0;
533     packet_queue_put_private(q, &flush_pkt);
534     SDL_UnlockMutex(q->mutex);
535 }
536
537 /* return < 0 if aborted, 0 if no packet and > 0 if packet.  */
538 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block, int *serial)
539 {
540     MyAVPacketList *pkt1;
541     int ret;
542
543     SDL_LockMutex(q->mutex);
544
545     for (;;) {
546         if (q->abort_request) {
547             ret = -1;
548             break;
549         }
550
551         pkt1 = q->first_pkt;
552         if (pkt1) {
553             q->first_pkt = pkt1->next;
554             if (!q->first_pkt)
555                 q->last_pkt = NULL;
556             q->nb_packets--;
557             q->size -= pkt1->pkt.size + sizeof(*pkt1);
558             q->duration -= pkt1->pkt.duration;
559             *pkt = pkt1->pkt;
560             if (serial)
561                 *serial = pkt1->serial;
562             av_free(pkt1);
563             ret = 1;
564             break;
565         } else if (!block) {
566             ret = 0;
567             break;
568         } else {
569             SDL_CondWait(q->cond, q->mutex);
570         }
571     }
572     SDL_UnlockMutex(q->mutex);
573     return ret;
574 }
575
576 static void decoder_init(Decoder *d, AVCodecContext *avctx, PacketQueue *queue, SDL_cond *empty_queue_cond) {
577     memset(d, 0, sizeof(Decoder));
578     d->avctx = avctx;
579     d->queue = queue;
580     d->empty_queue_cond = empty_queue_cond;
581     d->start_pts = AV_NOPTS_VALUE;
582     d->pkt_serial = -1;
583 }
584
585 static int decoder_decode_frame(Decoder *d, AVFrame *frame, AVSubtitle *sub) {
586     int ret = AVERROR(EAGAIN);
587
588     for (;;) {
589         AVPacket pkt;
590
591         if (d->queue->serial == d->pkt_serial) {
592             do {
593                 if (d->queue->abort_request)
594                     return -1;
595
596                 switch (d->avctx->codec_type) {
597                     case AVMEDIA_TYPE_VIDEO:
598                         ret = avcodec_receive_frame(d->avctx, frame);
599                         if (ret >= 0) {
600                             if (decoder_reorder_pts == -1) {
601                                 frame->pts = frame->best_effort_timestamp;
602                             } else if (!decoder_reorder_pts) {
603                                 frame->pts = frame->pkt_dts;
604                             }
605                         }
606                         break;
607                     case AVMEDIA_TYPE_AUDIO:
608                         ret = avcodec_receive_frame(d->avctx, frame);
609                         if (ret >= 0) {
610                             AVRational tb = (AVRational){1, frame->sample_rate};
611                             if (frame->pts != AV_NOPTS_VALUE)
612                                 frame->pts = av_rescale_q(frame->pts, d->avctx->pkt_timebase, tb);
613                             else if (d->next_pts != AV_NOPTS_VALUE)
614                                 frame->pts = av_rescale_q(d->next_pts, d->next_pts_tb, tb);
615                             if (frame->pts != AV_NOPTS_VALUE) {
616                                 d->next_pts = frame->pts + frame->nb_samples;
617                                 d->next_pts_tb = tb;
618                             }
619                         }
620                         break;
621                 }
622                 if (ret == AVERROR_EOF) {
623                     d->finished = d->pkt_serial;
624                     avcodec_flush_buffers(d->avctx);
625                     return 0;
626                 }
627                 if (ret >= 0)
628                     return 1;
629             } while (ret != AVERROR(EAGAIN));
630         }
631
632         do {
633             if (d->queue->nb_packets == 0)
634                 SDL_CondSignal(d->empty_queue_cond);
635             if (d->packet_pending) {
636                 av_packet_move_ref(&pkt, &d->pkt);
637                 d->packet_pending = 0;
638             } else {
639                 if (packet_queue_get(d->queue, &pkt, 1, &d->pkt_serial) < 0)
640                     return -1;
641             }
642         } while (d->queue->serial != d->pkt_serial);
643
644         if (pkt.data == flush_pkt.data) {
645             avcodec_flush_buffers(d->avctx);
646             d->finished = 0;
647             d->next_pts = d->start_pts;
648             d->next_pts_tb = d->start_pts_tb;
649         } else {
650             if (d->avctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
651                 int got_frame = 0;
652                 ret = avcodec_decode_subtitle2(d->avctx, sub, &got_frame, &pkt);
653                 if (ret < 0) {
654                     ret = AVERROR(EAGAIN);
655                 } else {
656                     if (got_frame && !pkt.data) {
657                        d->packet_pending = 1;
658                        av_packet_move_ref(&d->pkt, &pkt);
659                     }
660                     ret = got_frame ? 0 : (pkt.data ? AVERROR(EAGAIN) : AVERROR_EOF);
661                 }
662             } else {
663                 if (avcodec_send_packet(d->avctx, &pkt) == AVERROR(EAGAIN)) {
664                     av_log(d->avctx, AV_LOG_ERROR, "Receive_frame and send_packet both returned EAGAIN, which is an API violation.\n");
665                     d->packet_pending = 1;
666                     av_packet_move_ref(&d->pkt, &pkt);
667                 }
668             }
669             av_packet_unref(&pkt);
670         }
671     }
672 }
673
674 static void decoder_destroy(Decoder *d) {
675     av_packet_unref(&d->pkt);
676     avcodec_free_context(&d->avctx);
677 }
678
679 static void frame_queue_unref_item(Frame *vp)
680 {
681     av_frame_unref(vp->frame);
682     avsubtitle_free(&vp->sub);
683 }
684
685 static int frame_queue_init(FrameQueue *f, PacketQueue *pktq, int max_size, int keep_last)
686 {
687     int i;
688     memset(f, 0, sizeof(FrameQueue));
689     if (!(f->mutex = SDL_CreateMutex())) {
690         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
691         return AVERROR(ENOMEM);
692     }
693     if (!(f->cond = SDL_CreateCond())) {
694         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
695         return AVERROR(ENOMEM);
696     }
697     f->pktq = pktq;
698     f->max_size = FFMIN(max_size, FRAME_QUEUE_SIZE);
699     f->keep_last = !!keep_last;
700     for (i = 0; i < f->max_size; i++)
701         if (!(f->queue[i].frame = av_frame_alloc()))
702             return AVERROR(ENOMEM);
703     return 0;
704 }
705
706 static void frame_queue_destory(FrameQueue *f)
707 {
708     int i;
709     for (i = 0; i < f->max_size; i++) {
710         Frame *vp = &f->queue[i];
711         frame_queue_unref_item(vp);
712         av_frame_free(&vp->frame);
713     }
714     SDL_DestroyMutex(f->mutex);
715     SDL_DestroyCond(f->cond);
716 }
717
718 static void frame_queue_signal(FrameQueue *f)
719 {
720     SDL_LockMutex(f->mutex);
721     SDL_CondSignal(f->cond);
722     SDL_UnlockMutex(f->mutex);
723 }
724
725 static Frame *frame_queue_peek(FrameQueue *f)
726 {
727     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
728 }
729
730 static Frame *frame_queue_peek_next(FrameQueue *f)
731 {
732     return &f->queue[(f->rindex + f->rindex_shown + 1) % f->max_size];
733 }
734
735 static Frame *frame_queue_peek_last(FrameQueue *f)
736 {
737     return &f->queue[f->rindex];
738 }
739
740 static Frame *frame_queue_peek_writable(FrameQueue *f)
741 {
742     /* wait until we have space to put a new frame */
743     SDL_LockMutex(f->mutex);
744     while (f->size >= f->max_size &&
745            !f->pktq->abort_request) {
746         SDL_CondWait(f->cond, f->mutex);
747     }
748     SDL_UnlockMutex(f->mutex);
749
750     if (f->pktq->abort_request)
751         return NULL;
752
753     return &f->queue[f->windex];
754 }
755
756 static Frame *frame_queue_peek_readable(FrameQueue *f)
757 {
758     /* wait until we have a readable a new frame */
759     SDL_LockMutex(f->mutex);
760     while (f->size - f->rindex_shown <= 0 &&
761            !f->pktq->abort_request) {
762         SDL_CondWait(f->cond, f->mutex);
763     }
764     SDL_UnlockMutex(f->mutex);
765
766     if (f->pktq->abort_request)
767         return NULL;
768
769     return &f->queue[(f->rindex + f->rindex_shown) % f->max_size];
770 }
771
772 static void frame_queue_push(FrameQueue *f)
773 {
774     if (++f->windex == f->max_size)
775         f->windex = 0;
776     SDL_LockMutex(f->mutex);
777     f->size++;
778     SDL_CondSignal(f->cond);
779     SDL_UnlockMutex(f->mutex);
780 }
781
782 static void frame_queue_next(FrameQueue *f)
783 {
784     if (f->keep_last && !f->rindex_shown) {
785         f->rindex_shown = 1;
786         return;
787     }
788     frame_queue_unref_item(&f->queue[f->rindex]);
789     if (++f->rindex == f->max_size)
790         f->rindex = 0;
791     SDL_LockMutex(f->mutex);
792     f->size--;
793     SDL_CondSignal(f->cond);
794     SDL_UnlockMutex(f->mutex);
795 }
796
797 /* return the number of undisplayed frames in the queue */
798 static int frame_queue_nb_remaining(FrameQueue *f)
799 {
800     return f->size - f->rindex_shown;
801 }
802
803 /* return last shown position */
804 static int64_t frame_queue_last_pos(FrameQueue *f)
805 {
806     Frame *fp = &f->queue[f->rindex];
807     if (f->rindex_shown && fp->serial == f->pktq->serial)
808         return fp->pos;
809     else
810         return -1;
811 }
812
813 static void decoder_abort(Decoder *d, FrameQueue *fq)
814 {
815     packet_queue_abort(d->queue);
816     frame_queue_signal(fq);
817     SDL_WaitThread(d->decoder_tid, NULL);
818     d->decoder_tid = NULL;
819     packet_queue_flush(d->queue);
820 }
821
822 static inline void fill_rectangle(int x, int y, int w, int h)
823 {
824     SDL_Rect rect;
825     rect.x = x;
826     rect.y = y;
827     rect.w = w;
828     rect.h = h;
829     if (w && h)
830         SDL_RenderFillRect(renderer, &rect);
831 }
832
833 static int realloc_texture(SDL_Texture **texture, Uint32 new_format, int new_width, int new_height, SDL_BlendMode blendmode, int init_texture)
834 {
835     Uint32 format;
836     int access, w, h;
837     if (SDL_QueryTexture(*texture, &format, &access, &w, &h) < 0 || new_width != w || new_height != h || new_format != format) {
838         void *pixels;
839         int pitch;
840         SDL_DestroyTexture(*texture);
841         if (!(*texture = SDL_CreateTexture(renderer, new_format, SDL_TEXTUREACCESS_STREAMING, new_width, new_height)))
842             return -1;
843         if (SDL_SetTextureBlendMode(*texture, blendmode) < 0)
844             return -1;
845         if (init_texture) {
846             if (SDL_LockTexture(*texture, NULL, &pixels, &pitch) < 0)
847                 return -1;
848             memset(pixels, 0, pitch * new_height);
849             SDL_UnlockTexture(*texture);
850         }
851         av_log(NULL, AV_LOG_VERBOSE, "Created %dx%d texture with %s.\n", new_width, new_height, SDL_GetPixelFormatName(new_format));
852     }
853     return 0;
854 }
855
856 static void calculate_display_rect(SDL_Rect *rect,
857                                    int scr_xleft, int scr_ytop, int scr_width, int scr_height,
858                                    int pic_width, int pic_height, AVRational pic_sar)
859 {
860     float aspect_ratio;
861     int width, height, x, y;
862
863     if (pic_sar.num == 0)
864         aspect_ratio = 0;
865     else
866         aspect_ratio = av_q2d(pic_sar);
867
868     if (aspect_ratio <= 0.0)
869         aspect_ratio = 1.0;
870     aspect_ratio *= (float)pic_width / (float)pic_height;
871
872     /* XXX: we suppose the screen has a 1.0 pixel ratio */
873     height = scr_height;
874     width = lrint(height * aspect_ratio) & ~1;
875     if (width > scr_width) {
876         width = scr_width;
877         height = lrint(width / aspect_ratio) & ~1;
878     }
879     x = (scr_width - width) / 2;
880     y = (scr_height - height) / 2;
881     rect->x = scr_xleft + x;
882     rect->y = scr_ytop  + y;
883     rect->w = FFMAX(width,  1);
884     rect->h = FFMAX(height, 1);
885 }
886
887 static void get_sdl_pix_fmt_and_blendmode(int format, Uint32 *sdl_pix_fmt, SDL_BlendMode *sdl_blendmode)
888 {
889     int i;
890     *sdl_blendmode = SDL_BLENDMODE_NONE;
891     *sdl_pix_fmt = SDL_PIXELFORMAT_UNKNOWN;
892     if (format == AV_PIX_FMT_RGB32   ||
893         format == AV_PIX_FMT_RGB32_1 ||
894         format == AV_PIX_FMT_BGR32   ||
895         format == AV_PIX_FMT_BGR32_1)
896         *sdl_blendmode = SDL_BLENDMODE_BLEND;
897     for (i = 0; i < FF_ARRAY_ELEMS(sdl_texture_format_map) - 1; i++) {
898         if (format == sdl_texture_format_map[i].format) {
899             *sdl_pix_fmt = sdl_texture_format_map[i].texture_fmt;
900             return;
901         }
902     }
903 }
904
905 static int upload_texture(SDL_Texture **tex, AVFrame *frame, struct SwsContext **img_convert_ctx) {
906     int ret = 0;
907     Uint32 sdl_pix_fmt;
908     SDL_BlendMode sdl_blendmode;
909     get_sdl_pix_fmt_and_blendmode(frame->format, &sdl_pix_fmt, &sdl_blendmode);
910     if (realloc_texture(tex, sdl_pix_fmt == SDL_PIXELFORMAT_UNKNOWN ? SDL_PIXELFORMAT_ARGB8888 : sdl_pix_fmt, frame->width, frame->height, sdl_blendmode, 0) < 0)
911         return -1;
912     switch (sdl_pix_fmt) {
913         case SDL_PIXELFORMAT_UNKNOWN:
914             /* This should only happen if we are not using avfilter... */
915             *img_convert_ctx = sws_getCachedContext(*img_convert_ctx,
916                 frame->width, frame->height, frame->format, frame->width, frame->height,
917                 AV_PIX_FMT_BGRA, sws_flags, NULL, NULL, NULL);
918             if (*img_convert_ctx != NULL) {
919                 uint8_t *pixels[4];
920                 int pitch[4];
921                 if (!SDL_LockTexture(*tex, NULL, (void **)pixels, pitch)) {
922                     sws_scale(*img_convert_ctx, (const uint8_t * const *)frame->data, frame->linesize,
923                               0, frame->height, pixels, pitch);
924                     SDL_UnlockTexture(*tex);
925                 }
926             } else {
927                 av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
928                 ret = -1;
929             }
930             break;
931         case SDL_PIXELFORMAT_IYUV:
932             if (frame->linesize[0] > 0 && frame->linesize[1] > 0 && frame->linesize[2] > 0) {
933                 ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0], frame->linesize[0],
934                                                        frame->data[1], frame->linesize[1],
935                                                        frame->data[2], frame->linesize[2]);
936             } else if (frame->linesize[0] < 0 && frame->linesize[1] < 0 && frame->linesize[2] < 0) {
937                 ret = SDL_UpdateYUVTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height                    - 1), -frame->linesize[0],
938                                                        frame->data[1] + frame->linesize[1] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[1],
939                                                        frame->data[2] + frame->linesize[2] * (AV_CEIL_RSHIFT(frame->height, 1) - 1), -frame->linesize[2]);
940             } else {
941                 av_log(NULL, AV_LOG_ERROR, "Mixed negative and positive linesizes are not supported.\n");
942                 return -1;
943             }
944             break;
945         default:
946             if (frame->linesize[0] < 0) {
947                 ret = SDL_UpdateTexture(*tex, NULL, frame->data[0] + frame->linesize[0] * (frame->height - 1), -frame->linesize[0]);
948             } else {
949                 ret = SDL_UpdateTexture(*tex, NULL, frame->data[0], frame->linesize[0]);
950             }
951             break;
952     }
953     return ret;
954 }
955
956 static void video_image_display(VideoState *is)
957 {
958     Frame *vp;
959     Frame *sp = NULL;
960     SDL_Rect rect;
961
962     vp = frame_queue_peek_last(&is->pictq);
963     if (is->subtitle_st) {
964         if (frame_queue_nb_remaining(&is->subpq) > 0) {
965             sp = frame_queue_peek(&is->subpq);
966
967             if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000)) {
968                 if (!sp->uploaded) {
969                     uint8_t* pixels[4];
970                     int pitch[4];
971                     int i;
972                     if (!sp->width || !sp->height) {
973                         sp->width = vp->width;
974                         sp->height = vp->height;
975                     }
976                     if (realloc_texture(&is->sub_texture, SDL_PIXELFORMAT_ARGB8888, sp->width, sp->height, SDL_BLENDMODE_BLEND, 1) < 0)
977                         return;
978
979                     for (i = 0; i < sp->sub.num_rects; i++) {
980                         AVSubtitleRect *sub_rect = sp->sub.rects[i];
981
982                         sub_rect->x = av_clip(sub_rect->x, 0, sp->width );
983                         sub_rect->y = av_clip(sub_rect->y, 0, sp->height);
984                         sub_rect->w = av_clip(sub_rect->w, 0, sp->width  - sub_rect->x);
985                         sub_rect->h = av_clip(sub_rect->h, 0, sp->height - sub_rect->y);
986
987                         is->sub_convert_ctx = sws_getCachedContext(is->sub_convert_ctx,
988                             sub_rect->w, sub_rect->h, AV_PIX_FMT_PAL8,
989                             sub_rect->w, sub_rect->h, AV_PIX_FMT_BGRA,
990                             0, NULL, NULL, NULL);
991                         if (!is->sub_convert_ctx) {
992                             av_log(NULL, AV_LOG_FATAL, "Cannot initialize the conversion context\n");
993                             return;
994                         }
995                         if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)pixels, pitch)) {
996                             sws_scale(is->sub_convert_ctx, (const uint8_t * const *)sub_rect->data, sub_rect->linesize,
997                                       0, sub_rect->h, pixels, pitch);
998                             SDL_UnlockTexture(is->sub_texture);
999                         }
1000                     }
1001                     sp->uploaded = 1;
1002                 }
1003             } else
1004                 sp = NULL;
1005         }
1006     }
1007
1008     calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp->width, vp->height, vp->sar);
1009
1010     if (!vp->uploaded) {
1011         if (upload_texture(&is->vid_texture, vp->frame, &is->img_convert_ctx) < 0)
1012             return;
1013         vp->uploaded = 1;
1014         vp->flip_v = vp->frame->linesize[0] < 0;
1015     }
1016
1017     SDL_RenderCopyEx(renderer, is->vid_texture, NULL, &rect, 0, NULL, vp->flip_v ? SDL_FLIP_VERTICAL : 0);
1018     if (sp) {
1019 #if USE_ONEPASS_SUBTITLE_RENDER
1020         SDL_RenderCopy(renderer, is->sub_texture, NULL, &rect);
1021 #else
1022         int i;
1023         double xratio = (double)rect.w / (double)sp->width;
1024         double yratio = (double)rect.h / (double)sp->height;
1025         for (i = 0; i < sp->sub.num_rects; i++) {
1026             SDL_Rect *sub_rect = (SDL_Rect*)sp->sub.rects[i];
1027             SDL_Rect target = {.x = rect.x + sub_rect->x * xratio,
1028                                .y = rect.y + sub_rect->y * yratio,
1029                                .w = sub_rect->w * xratio,
1030                                .h = sub_rect->h * yratio};
1031             SDL_RenderCopy(renderer, is->sub_texture, sub_rect, &target);
1032         }
1033 #endif
1034     }
1035 }
1036
1037 static inline int compute_mod(int a, int b)
1038 {
1039     return a < 0 ? a%b + b : a%b;
1040 }
1041
1042 static void video_audio_display(VideoState *s)
1043 {
1044     int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
1045     int ch, channels, h, h2;
1046     int64_t time_diff;
1047     int rdft_bits, nb_freq;
1048
1049     for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
1050         ;
1051     nb_freq = 1 << (rdft_bits - 1);
1052
1053     /* compute display index : center on currently output samples */
1054     channels = s->audio_tgt.channels;
1055     nb_display_channels = channels;
1056     if (!s->paused) {
1057         int data_used= s->show_mode == SHOW_MODE_WAVES ? s->width : (2*nb_freq);
1058         n = 2 * channels;
1059         delay = s->audio_write_buf_size;
1060         delay /= n;
1061
1062         /* to be more precise, we take into account the time spent since
1063            the last buffer computation */
1064         if (audio_callback_time) {
1065             time_diff = av_gettime_relative() - audio_callback_time;
1066             delay -= (time_diff * s->audio_tgt.freq) / 1000000;
1067         }
1068
1069         delay += 2 * data_used;
1070         if (delay < data_used)
1071             delay = data_used;
1072
1073         i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
1074         if (s->show_mode == SHOW_MODE_WAVES) {
1075             h = INT_MIN;
1076             for (i = 0; i < 1000; i += channels) {
1077                 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
1078                 int a = s->sample_array[idx];
1079                 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
1080                 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
1081                 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
1082                 int score = a - d;
1083                 if (h < score && (b ^ c) < 0) {
1084                     h = score;
1085                     i_start = idx;
1086                 }
1087             }
1088         }
1089
1090         s->last_i_start = i_start;
1091     } else {
1092         i_start = s->last_i_start;
1093     }
1094
1095     if (s->show_mode == SHOW_MODE_WAVES) {
1096         SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
1097
1098         /* total height for one channel */
1099         h = s->height / nb_display_channels;
1100         /* graph height / 2 */
1101         h2 = (h * 9) / 20;
1102         for (ch = 0; ch < nb_display_channels; ch++) {
1103             i = i_start + ch;
1104             y1 = s->ytop + ch * h + (h / 2); /* position of center line */
1105             for (x = 0; x < s->width; x++) {
1106                 y = (s->sample_array[i] * h2) >> 15;
1107                 if (y < 0) {
1108                     y = -y;
1109                     ys = y1 - y;
1110                 } else {
1111                     ys = y1;
1112                 }
1113                 fill_rectangle(s->xleft + x, ys, 1, y);
1114                 i += channels;
1115                 if (i >= SAMPLE_ARRAY_SIZE)
1116                     i -= SAMPLE_ARRAY_SIZE;
1117             }
1118         }
1119
1120         SDL_SetRenderDrawColor(renderer, 0, 0, 255, 255);
1121
1122         for (ch = 1; ch < nb_display_channels; ch++) {
1123             y = s->ytop + ch * h;
1124             fill_rectangle(s->xleft, y, s->width, 1);
1125         }
1126     } else {
1127         if (realloc_texture(&s->vis_texture, SDL_PIXELFORMAT_ARGB8888, s->width, s->height, SDL_BLENDMODE_NONE, 1) < 0)
1128             return;
1129
1130         nb_display_channels= FFMIN(nb_display_channels, 2);
1131         if (rdft_bits != s->rdft_bits) {
1132             av_rdft_end(s->rdft);
1133             av_free(s->rdft_data);
1134             s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
1135             s->rdft_bits = rdft_bits;
1136             s->rdft_data = av_malloc_array(nb_freq, 4 *sizeof(*s->rdft_data));
1137         }
1138         if (!s->rdft || !s->rdft_data){
1139             av_log(NULL, AV_LOG_ERROR, "Failed to allocate buffers for RDFT, switching to waves display\n");
1140             s->show_mode = SHOW_MODE_WAVES;
1141         } else {
1142             FFTSample *data[2];
1143             SDL_Rect rect = {.x = s->xpos, .y = 0, .w = 1, .h = s->height};
1144             uint32_t *pixels;
1145             int pitch;
1146             for (ch = 0; ch < nb_display_channels; ch++) {
1147                 data[ch] = s->rdft_data + 2 * nb_freq * ch;
1148                 i = i_start + ch;
1149                 for (x = 0; x < 2 * nb_freq; x++) {
1150                     double w = (x-nb_freq) * (1.0 / nb_freq);
1151                     data[ch][x] = s->sample_array[i] * (1.0 - w * w);
1152                     i += channels;
1153                     if (i >= SAMPLE_ARRAY_SIZE)
1154                         i -= SAMPLE_ARRAY_SIZE;
1155                 }
1156                 av_rdft_calc(s->rdft, data[ch]);
1157             }
1158             /* Least efficient way to do this, we should of course
1159              * directly access it but it is more than fast enough. */
1160             if (!SDL_LockTexture(s->vis_texture, &rect, (void **)&pixels, &pitch)) {
1161                 pitch >>= 2;
1162                 pixels += pitch * s->height;
1163                 for (y = 0; y < s->height; y++) {
1164                     double w = 1 / sqrt(nb_freq);
1165                     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]));
1166                     int b = (nb_display_channels == 2 ) ? sqrt(w * hypot(data[1][2 * y + 0], data[1][2 * y + 1]))
1167                                                         : a;
1168                     a = FFMIN(a, 255);
1169                     b = FFMIN(b, 255);
1170                     pixels -= pitch;
1171                     *pixels = (a << 16) + (b << 8) + ((a+b) >> 1);
1172                 }
1173                 SDL_UnlockTexture(s->vis_texture);
1174             }
1175             SDL_RenderCopy(renderer, s->vis_texture, NULL, NULL);
1176         }
1177         if (!s->paused)
1178             s->xpos++;
1179         if (s->xpos >= s->width)
1180             s->xpos= s->xleft;
1181     }
1182 }
1183
1184 static void stream_component_close(VideoState *is, int stream_index)
1185 {
1186     AVFormatContext *ic = is->ic;
1187     AVCodecParameters *codecpar;
1188
1189     if (stream_index < 0 || stream_index >= ic->nb_streams)
1190         return;
1191     codecpar = ic->streams[stream_index]->codecpar;
1192
1193     switch (codecpar->codec_type) {
1194     case AVMEDIA_TYPE_AUDIO:
1195         decoder_abort(&is->auddec, &is->sampq);
1196         SDL_CloseAudioDevice(audio_dev);
1197         decoder_destroy(&is->auddec);
1198         swr_free(&is->swr_ctx);
1199         av_freep(&is->audio_buf1);
1200         is->audio_buf1_size = 0;
1201         is->audio_buf = NULL;
1202
1203         if (is->rdft) {
1204             av_rdft_end(is->rdft);
1205             av_freep(&is->rdft_data);
1206             is->rdft = NULL;
1207             is->rdft_bits = 0;
1208         }
1209         break;
1210     case AVMEDIA_TYPE_VIDEO:
1211         decoder_abort(&is->viddec, &is->pictq);
1212         decoder_destroy(&is->viddec);
1213         break;
1214     case AVMEDIA_TYPE_SUBTITLE:
1215         decoder_abort(&is->subdec, &is->subpq);
1216         decoder_destroy(&is->subdec);
1217         break;
1218     default:
1219         break;
1220     }
1221
1222     ic->streams[stream_index]->discard = AVDISCARD_ALL;
1223     switch (codecpar->codec_type) {
1224     case AVMEDIA_TYPE_AUDIO:
1225         is->audio_st = NULL;
1226         is->audio_stream = -1;
1227         break;
1228     case AVMEDIA_TYPE_VIDEO:
1229         is->video_st = NULL;
1230         is->video_stream = -1;
1231         break;
1232     case AVMEDIA_TYPE_SUBTITLE:
1233         is->subtitle_st = NULL;
1234         is->subtitle_stream = -1;
1235         break;
1236     default:
1237         break;
1238     }
1239 }
1240
1241 static void stream_close(VideoState *is)
1242 {
1243     /* XXX: use a special url_shutdown call to abort parse cleanly */
1244     is->abort_request = 1;
1245     SDL_WaitThread(is->read_tid, NULL);
1246
1247     /* close each stream */
1248     if (is->audio_stream >= 0)
1249         stream_component_close(is, is->audio_stream);
1250     if (is->video_stream >= 0)
1251         stream_component_close(is, is->video_stream);
1252     if (is->subtitle_stream >= 0)
1253         stream_component_close(is, is->subtitle_stream);
1254
1255     avformat_close_input(&is->ic);
1256
1257     packet_queue_destroy(&is->videoq);
1258     packet_queue_destroy(&is->audioq);
1259     packet_queue_destroy(&is->subtitleq);
1260
1261     /* free all pictures */
1262     frame_queue_destory(&is->pictq);
1263     frame_queue_destory(&is->sampq);
1264     frame_queue_destory(&is->subpq);
1265     SDL_DestroyCond(is->continue_read_thread);
1266     sws_freeContext(is->img_convert_ctx);
1267     sws_freeContext(is->sub_convert_ctx);
1268     av_free(is->filename);
1269     if (is->vis_texture)
1270         SDL_DestroyTexture(is->vis_texture);
1271     if (is->vid_texture)
1272         SDL_DestroyTexture(is->vid_texture);
1273     if (is->sub_texture)
1274         SDL_DestroyTexture(is->sub_texture);
1275     av_free(is);
1276 }
1277
1278 static void do_exit(VideoState *is)
1279 {
1280     if (is) {
1281         stream_close(is);
1282     }
1283     if (renderer)
1284         SDL_DestroyRenderer(renderer);
1285     if (window)
1286         SDL_DestroyWindow(window);
1287     uninit_opts();
1288 #if CONFIG_AVFILTER
1289     av_freep(&vfilters_list);
1290 #endif
1291     avformat_network_deinit();
1292     if (show_status)
1293         printf("\n");
1294     SDL_Quit();
1295     av_log(NULL, AV_LOG_QUIET, "%s", "");
1296     exit(0);
1297 }
1298
1299 static void sigterm_handler(int sig)
1300 {
1301     exit(123);
1302 }
1303
1304 static void set_default_window_size(int width, int height, AVRational sar)
1305 {
1306     SDL_Rect rect;
1307     calculate_display_rect(&rect, 0, 0, INT_MAX, height, width, height, sar);
1308     default_width  = rect.w;
1309     default_height = rect.h;
1310 }
1311
1312 static int video_open(VideoState *is)
1313 {
1314     int w,h;
1315
1316     if (screen_width) {
1317         w = screen_width;
1318         h = screen_height;
1319     } else {
1320         w = default_width;
1321         h = default_height;
1322     }
1323
1324     if (!window_title)
1325         window_title = input_filename;
1326     SDL_SetWindowTitle(window, window_title);
1327
1328     SDL_SetWindowSize(window, w, h);
1329     SDL_SetWindowPosition(window, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED);
1330     if (is_full_screen)
1331         SDL_SetWindowFullscreen(window, SDL_WINDOW_FULLSCREEN_DESKTOP);
1332     SDL_ShowWindow(window);
1333
1334     is->width  = w;
1335     is->height = h;
1336
1337     return 0;
1338 }
1339
1340 /* display the current picture, if any */
1341 static void video_display(VideoState *is)
1342 {
1343     if (!is->width)
1344         video_open(is);
1345
1346     SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
1347     SDL_RenderClear(renderer);
1348     if (is->audio_st && is->show_mode != SHOW_MODE_VIDEO)
1349         video_audio_display(is);
1350     else if (is->video_st)
1351         video_image_display(is);
1352     SDL_RenderPresent(renderer);
1353 }
1354
1355 static double get_clock(Clock *c)
1356 {
1357     if (*c->queue_serial != c->serial)
1358         return NAN;
1359     if (c->paused) {
1360         return c->pts;
1361     } else {
1362         double time = av_gettime_relative() / 1000000.0;
1363         return c->pts_drift + time - (time - c->last_updated) * (1.0 - c->speed);
1364     }
1365 }
1366
1367 static void set_clock_at(Clock *c, double pts, int serial, double time)
1368 {
1369     c->pts = pts;
1370     c->last_updated = time;
1371     c->pts_drift = c->pts - time;
1372     c->serial = serial;
1373 }
1374
1375 static void set_clock(Clock *c, double pts, int serial)
1376 {
1377     double time = av_gettime_relative() / 1000000.0;
1378     set_clock_at(c, pts, serial, time);
1379 }
1380
1381 static void set_clock_speed(Clock *c, double speed)
1382 {
1383     set_clock(c, get_clock(c), c->serial);
1384     c->speed = speed;
1385 }
1386
1387 static void init_clock(Clock *c, int *queue_serial)
1388 {
1389     c->speed = 1.0;
1390     c->paused = 0;
1391     c->queue_serial = queue_serial;
1392     set_clock(c, NAN, -1);
1393 }
1394
1395 static void sync_clock_to_slave(Clock *c, Clock *slave)
1396 {
1397     double clock = get_clock(c);
1398     double slave_clock = get_clock(slave);
1399     if (!isnan(slave_clock) && (isnan(clock) || fabs(clock - slave_clock) > AV_NOSYNC_THRESHOLD))
1400         set_clock(c, slave_clock, slave->serial);
1401 }
1402
1403 static int get_master_sync_type(VideoState *is) {
1404     if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
1405         if (is->video_st)
1406             return AV_SYNC_VIDEO_MASTER;
1407         else
1408             return AV_SYNC_AUDIO_MASTER;
1409     } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1410         if (is->audio_st)
1411             return AV_SYNC_AUDIO_MASTER;
1412         else
1413             return AV_SYNC_EXTERNAL_CLOCK;
1414     } else {
1415         return AV_SYNC_EXTERNAL_CLOCK;
1416     }
1417 }
1418
1419 /* get the current master clock value */
1420 static double get_master_clock(VideoState *is)
1421 {
1422     double val;
1423
1424     switch (get_master_sync_type(is)) {
1425         case AV_SYNC_VIDEO_MASTER:
1426             val = get_clock(&is->vidclk);
1427             break;
1428         case AV_SYNC_AUDIO_MASTER:
1429             val = get_clock(&is->audclk);
1430             break;
1431         default:
1432             val = get_clock(&is->extclk);
1433             break;
1434     }
1435     return val;
1436 }
1437
1438 static void check_external_clock_speed(VideoState *is) {
1439    if (is->video_stream >= 0 && is->videoq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES ||
1440        is->audio_stream >= 0 && is->audioq.nb_packets <= EXTERNAL_CLOCK_MIN_FRAMES) {
1441        set_clock_speed(&is->extclk, FFMAX(EXTERNAL_CLOCK_SPEED_MIN, is->extclk.speed - EXTERNAL_CLOCK_SPEED_STEP));
1442    } else if ((is->video_stream < 0 || is->videoq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES) &&
1443               (is->audio_stream < 0 || is->audioq.nb_packets > EXTERNAL_CLOCK_MAX_FRAMES)) {
1444        set_clock_speed(&is->extclk, FFMIN(EXTERNAL_CLOCK_SPEED_MAX, is->extclk.speed + EXTERNAL_CLOCK_SPEED_STEP));
1445    } else {
1446        double speed = is->extclk.speed;
1447        if (speed != 1.0)
1448            set_clock_speed(&is->extclk, speed + EXTERNAL_CLOCK_SPEED_STEP * (1.0 - speed) / fabs(1.0 - speed));
1449    }
1450 }
1451
1452 /* seek in the stream */
1453 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1454 {
1455     if (!is->seek_req) {
1456         is->seek_pos = pos;
1457         is->seek_rel = rel;
1458         is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1459         if (seek_by_bytes)
1460             is->seek_flags |= AVSEEK_FLAG_BYTE;
1461         is->seek_req = 1;
1462         SDL_CondSignal(is->continue_read_thread);
1463     }
1464 }
1465
1466 /* pause or resume the video */
1467 static void stream_toggle_pause(VideoState *is)
1468 {
1469     if (is->paused) {
1470         is->frame_timer += av_gettime_relative() / 1000000.0 - is->vidclk.last_updated;
1471         if (is->read_pause_return != AVERROR(ENOSYS)) {
1472             is->vidclk.paused = 0;
1473         }
1474         set_clock(&is->vidclk, get_clock(&is->vidclk), is->vidclk.serial);
1475     }
1476     set_clock(&is->extclk, get_clock(&is->extclk), is->extclk.serial);
1477     is->paused = is->audclk.paused = is->vidclk.paused = is->extclk.paused = !is->paused;
1478 }
1479
1480 static void toggle_pause(VideoState *is)
1481 {
1482     stream_toggle_pause(is);
1483     is->step = 0;
1484 }
1485
1486 static void toggle_mute(VideoState *is)
1487 {
1488     is->muted = !is->muted;
1489 }
1490
1491 static void update_volume(VideoState *is, int sign, double step)
1492 {
1493     double volume_level = is->audio_volume ? (20 * log(is->audio_volume / (double)SDL_MIX_MAXVOLUME) / log(10)) : -1000.0;
1494     int new_volume = lrint(SDL_MIX_MAXVOLUME * pow(10.0, (volume_level + sign * step) / 20.0));
1495     is->audio_volume = av_clip(is->audio_volume == new_volume ? (is->audio_volume + sign) : new_volume, 0, SDL_MIX_MAXVOLUME);
1496 }
1497
1498 static void step_to_next_frame(VideoState *is)
1499 {
1500     /* if the stream is paused unpause it, then step */
1501     if (is->paused)
1502         stream_toggle_pause(is);
1503     is->step = 1;
1504 }
1505
1506 static double compute_target_delay(double delay, VideoState *is)
1507 {
1508     double sync_threshold, diff = 0;
1509
1510     /* update delay to follow master synchronisation source */
1511     if (get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER) {
1512         /* if video is slave, we try to correct big delays by
1513            duplicating or deleting a frame */
1514         diff = get_clock(&is->vidclk) - get_master_clock(is);
1515
1516         /* skip or repeat frame. We take into account the
1517            delay to compute the threshold. I still don't know
1518            if it is the best guess */
1519         sync_threshold = FFMAX(AV_SYNC_THRESHOLD_MIN, FFMIN(AV_SYNC_THRESHOLD_MAX, delay));
1520         if (!isnan(diff) && fabs(diff) < is->max_frame_duration) {
1521             if (diff <= -sync_threshold)
1522                 delay = FFMAX(0, delay + diff);
1523             else if (diff >= sync_threshold && delay > AV_SYNC_FRAMEDUP_THRESHOLD)
1524                 delay = delay + diff;
1525             else if (diff >= sync_threshold)
1526                 delay = 2 * delay;
1527         }
1528     }
1529
1530     av_log(NULL, AV_LOG_TRACE, "video: delay=%0.3f A-V=%f\n",
1531             delay, -diff);
1532
1533     return delay;
1534 }
1535
1536 static double vp_duration(VideoState *is, Frame *vp, Frame *nextvp) {
1537     if (vp->serial == nextvp->serial) {
1538         double duration = nextvp->pts - vp->pts;
1539         if (isnan(duration) || duration <= 0 || duration > is->max_frame_duration)
1540             return vp->duration;
1541         else
1542             return duration;
1543     } else {
1544         return 0.0;
1545     }
1546 }
1547
1548 static void update_video_pts(VideoState *is, double pts, int64_t pos, int serial) {
1549     /* update current video pts */
1550     set_clock(&is->vidclk, pts, serial);
1551     sync_clock_to_slave(&is->extclk, &is->vidclk);
1552 }
1553
1554 /* called to display each frame */
1555 static void video_refresh(void *opaque, double *remaining_time)
1556 {
1557     VideoState *is = opaque;
1558     double time;
1559
1560     Frame *sp, *sp2;
1561
1562     if (!is->paused && get_master_sync_type(is) == AV_SYNC_EXTERNAL_CLOCK && is->realtime)
1563         check_external_clock_speed(is);
1564
1565     if (!display_disable && is->show_mode != SHOW_MODE_VIDEO && is->audio_st) {
1566         time = av_gettime_relative() / 1000000.0;
1567         if (is->force_refresh || is->last_vis_time + rdftspeed < time) {
1568             video_display(is);
1569             is->last_vis_time = time;
1570         }
1571         *remaining_time = FFMIN(*remaining_time, is->last_vis_time + rdftspeed - time);
1572     }
1573
1574     if (is->video_st) {
1575 retry:
1576         if (frame_queue_nb_remaining(&is->pictq) == 0) {
1577             // nothing to do, no picture to display in the queue
1578         } else {
1579             double last_duration, duration, delay;
1580             Frame *vp, *lastvp;
1581
1582             /* dequeue the picture */
1583             lastvp = frame_queue_peek_last(&is->pictq);
1584             vp = frame_queue_peek(&is->pictq);
1585
1586             if (vp->serial != is->videoq.serial) {
1587                 frame_queue_next(&is->pictq);
1588                 goto retry;
1589             }
1590
1591             if (lastvp->serial != vp->serial)
1592                 is->frame_timer = av_gettime_relative() / 1000000.0;
1593
1594             if (is->paused)
1595                 goto display;
1596
1597             /* compute nominal last_duration */
1598             last_duration = vp_duration(is, lastvp, vp);
1599             delay = compute_target_delay(last_duration, is);
1600
1601             time= av_gettime_relative()/1000000.0;
1602             if (time < is->frame_timer + delay) {
1603                 *remaining_time = FFMIN(is->frame_timer + delay - time, *remaining_time);
1604                 goto display;
1605             }
1606
1607             is->frame_timer += delay;
1608             if (delay > 0 && time - is->frame_timer > AV_SYNC_THRESHOLD_MAX)
1609                 is->frame_timer = time;
1610
1611             SDL_LockMutex(is->pictq.mutex);
1612             if (!isnan(vp->pts))
1613                 update_video_pts(is, vp->pts, vp->pos, vp->serial);
1614             SDL_UnlockMutex(is->pictq.mutex);
1615
1616             if (frame_queue_nb_remaining(&is->pictq) > 1) {
1617                 Frame *nextvp = frame_queue_peek_next(&is->pictq);
1618                 duration = vp_duration(is, vp, nextvp);
1619                 if(!is->step && (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) && time > is->frame_timer + duration){
1620                     is->frame_drops_late++;
1621                     frame_queue_next(&is->pictq);
1622                     goto retry;
1623                 }
1624             }
1625
1626             if (is->subtitle_st) {
1627                     while (frame_queue_nb_remaining(&is->subpq) > 0) {
1628                         sp = frame_queue_peek(&is->subpq);
1629
1630                         if (frame_queue_nb_remaining(&is->subpq) > 1)
1631                             sp2 = frame_queue_peek_next(&is->subpq);
1632                         else
1633                             sp2 = NULL;
1634
1635                         if (sp->serial != is->subtitleq.serial
1636                                 || (is->vidclk.pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1637                                 || (sp2 && is->vidclk.pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1638                         {
1639                             if (sp->uploaded) {
1640                                 int i;
1641                                 for (i = 0; i < sp->sub.num_rects; i++) {
1642                                     AVSubtitleRect *sub_rect = sp->sub.rects[i];
1643                                     uint8_t *pixels;
1644                                     int pitch, j;
1645
1646                                     if (!SDL_LockTexture(is->sub_texture, (SDL_Rect *)sub_rect, (void **)&pixels, &pitch)) {
1647                                         for (j = 0; j < sub_rect->h; j++, pixels += pitch)
1648                                             memset(pixels, 0, sub_rect->w << 2);
1649                                         SDL_UnlockTexture(is->sub_texture);
1650                                     }
1651                                 }
1652                             }
1653                             frame_queue_next(&is->subpq);
1654                         } else {
1655                             break;
1656                         }
1657                     }
1658             }
1659
1660             frame_queue_next(&is->pictq);
1661             is->force_refresh = 1;
1662
1663             if (is->step && !is->paused)
1664                 stream_toggle_pause(is);
1665         }
1666 display:
1667         /* display picture */
1668         if (!display_disable && is->force_refresh && is->show_mode == SHOW_MODE_VIDEO && is->pictq.rindex_shown)
1669             video_display(is);
1670     }
1671     is->force_refresh = 0;
1672     if (show_status) {
1673         static int64_t last_time;
1674         int64_t cur_time;
1675         int aqsize, vqsize, sqsize;
1676         double av_diff;
1677
1678         cur_time = av_gettime_relative();
1679         if (!last_time || (cur_time - last_time) >= 30000) {
1680             aqsize = 0;
1681             vqsize = 0;
1682             sqsize = 0;
1683             if (is->audio_st)
1684                 aqsize = is->audioq.size;
1685             if (is->video_st)
1686                 vqsize = is->videoq.size;
1687             if (is->subtitle_st)
1688                 sqsize = is->subtitleq.size;
1689             av_diff = 0;
1690             if (is->audio_st && is->video_st)
1691                 av_diff = get_clock(&is->audclk) - get_clock(&is->vidclk);
1692             else if (is->video_st)
1693                 av_diff = get_master_clock(is) - get_clock(&is->vidclk);
1694             else if (is->audio_st)
1695                 av_diff = get_master_clock(is) - get_clock(&is->audclk);
1696             av_log(NULL, AV_LOG_INFO,
1697                    "%7.2f %s:%7.3f fd=%4d aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64"   \r",
1698                    get_master_clock(is),
1699                    (is->audio_st && is->video_st) ? "A-V" : (is->video_st ? "M-V" : (is->audio_st ? "M-A" : "   ")),
1700                    av_diff,
1701                    is->frame_drops_early + is->frame_drops_late,
1702                    aqsize / 1024,
1703                    vqsize / 1024,
1704                    sqsize,
1705                    is->video_st ? is->viddec.avctx->pts_correction_num_faulty_dts : 0,
1706                    is->video_st ? is->viddec.avctx->pts_correction_num_faulty_pts : 0);
1707             fflush(stdout);
1708             last_time = cur_time;
1709         }
1710     }
1711 }
1712
1713 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, double duration, int64_t pos, int serial)
1714 {
1715     Frame *vp;
1716
1717 #if defined(DEBUG_SYNC)
1718     printf("frame_type=%c pts=%0.3f\n",
1719            av_get_picture_type_char(src_frame->pict_type), pts);
1720 #endif
1721
1722     if (!(vp = frame_queue_peek_writable(&is->pictq)))
1723         return -1;
1724
1725     vp->sar = src_frame->sample_aspect_ratio;
1726     vp->uploaded = 0;
1727
1728     vp->width = src_frame->width;
1729     vp->height = src_frame->height;
1730     vp->format = src_frame->format;
1731
1732     vp->pts = pts;
1733     vp->duration = duration;
1734     vp->pos = pos;
1735     vp->serial = serial;
1736
1737     set_default_window_size(vp->width, vp->height, vp->sar);
1738
1739     av_frame_move_ref(vp->frame, src_frame);
1740     frame_queue_push(&is->pictq);
1741     return 0;
1742 }
1743
1744 static int get_video_frame(VideoState *is, AVFrame *frame)
1745 {
1746     int got_picture;
1747
1748     if ((got_picture = decoder_decode_frame(&is->viddec, frame, NULL)) < 0)
1749         return -1;
1750
1751     if (got_picture) {
1752         double dpts = NAN;
1753
1754         if (frame->pts != AV_NOPTS_VALUE)
1755             dpts = av_q2d(is->video_st->time_base) * frame->pts;
1756
1757         frame->sample_aspect_ratio = av_guess_sample_aspect_ratio(is->ic, is->video_st, frame);
1758
1759         if (framedrop>0 || (framedrop && get_master_sync_type(is) != AV_SYNC_VIDEO_MASTER)) {
1760             if (frame->pts != AV_NOPTS_VALUE) {
1761                 double diff = dpts - get_master_clock(is);
1762                 if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD &&
1763                     diff - is->frame_last_filter_delay < 0 &&
1764                     is->viddec.pkt_serial == is->vidclk.serial &&
1765                     is->videoq.nb_packets) {
1766                     is->frame_drops_early++;
1767                     av_frame_unref(frame);
1768                     got_picture = 0;
1769                 }
1770             }
1771         }
1772     }
1773
1774     return got_picture;
1775 }
1776
1777 #if CONFIG_AVFILTER
1778 static int configure_filtergraph(AVFilterGraph *graph, const char *filtergraph,
1779                                  AVFilterContext *source_ctx, AVFilterContext *sink_ctx)
1780 {
1781     int ret, i;
1782     int nb_filters = graph->nb_filters;
1783     AVFilterInOut *outputs = NULL, *inputs = NULL;
1784
1785     if (filtergraph) {
1786         outputs = avfilter_inout_alloc();
1787         inputs  = avfilter_inout_alloc();
1788         if (!outputs || !inputs) {
1789             ret = AVERROR(ENOMEM);
1790             goto fail;
1791         }
1792
1793         outputs->name       = av_strdup("in");
1794         outputs->filter_ctx = source_ctx;
1795         outputs->pad_idx    = 0;
1796         outputs->next       = NULL;
1797
1798         inputs->name        = av_strdup("out");
1799         inputs->filter_ctx  = sink_ctx;
1800         inputs->pad_idx     = 0;
1801         inputs->next        = NULL;
1802
1803         if ((ret = avfilter_graph_parse_ptr(graph, filtergraph, &inputs, &outputs, NULL)) < 0)
1804             goto fail;
1805     } else {
1806         if ((ret = avfilter_link(source_ctx, 0, sink_ctx, 0)) < 0)
1807             goto fail;
1808     }
1809
1810     /* Reorder the filters to ensure that inputs of the custom filters are merged first */
1811     for (i = 0; i < graph->nb_filters - nb_filters; i++)
1812         FFSWAP(AVFilterContext*, graph->filters[i], graph->filters[i + nb_filters]);
1813
1814     ret = avfilter_graph_config(graph, NULL);
1815 fail:
1816     avfilter_inout_free(&outputs);
1817     avfilter_inout_free(&inputs);
1818     return ret;
1819 }
1820
1821 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters, AVFrame *frame)
1822 {
1823     enum AVPixelFormat pix_fmts[FF_ARRAY_ELEMS(sdl_texture_format_map)];
1824     char sws_flags_str[512] = "";
1825     char buffersrc_args[256];
1826     int ret;
1827     AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter = NULL;
1828     AVCodecParameters *codecpar = is->video_st->codecpar;
1829     AVRational fr = av_guess_frame_rate(is->ic, is->video_st, NULL);
1830     AVDictionaryEntry *e = NULL;
1831     int nb_pix_fmts = 0;
1832     int i, j;
1833
1834     for (i = 0; i < renderer_info.num_texture_formats; i++) {
1835         for (j = 0; j < FF_ARRAY_ELEMS(sdl_texture_format_map) - 1; j++) {
1836             if (renderer_info.texture_formats[i] == sdl_texture_format_map[j].texture_fmt) {
1837                 pix_fmts[nb_pix_fmts++] = sdl_texture_format_map[j].format;
1838                 break;
1839             }
1840         }
1841     }
1842     pix_fmts[nb_pix_fmts] = AV_PIX_FMT_NONE;
1843
1844     while ((e = av_dict_get(sws_dict, "", e, AV_DICT_IGNORE_SUFFIX))) {
1845         if (!strcmp(e->key, "sws_flags")) {
1846             av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", "flags", e->value);
1847         } else
1848             av_strlcatf(sws_flags_str, sizeof(sws_flags_str), "%s=%s:", e->key, e->value);
1849     }
1850     if (strlen(sws_flags_str))
1851         sws_flags_str[strlen(sws_flags_str)-1] = '\0';
1852
1853     graph->scale_sws_opts = av_strdup(sws_flags_str);
1854
1855     snprintf(buffersrc_args, sizeof(buffersrc_args),
1856              "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:pixel_aspect=%d/%d",
1857              frame->width, frame->height, frame->format,
1858              is->video_st->time_base.num, is->video_st->time_base.den,
1859              codecpar->sample_aspect_ratio.num, FFMAX(codecpar->sample_aspect_ratio.den, 1));
1860     if (fr.num && fr.den)
1861         av_strlcatf(buffersrc_args, sizeof(buffersrc_args), ":frame_rate=%d/%d", fr.num, fr.den);
1862
1863     if ((ret = avfilter_graph_create_filter(&filt_src,
1864                                             avfilter_get_by_name("buffer"),
1865                                             "ffplay_buffer", buffersrc_args, NULL,
1866                                             graph)) < 0)
1867         goto fail;
1868
1869     ret = avfilter_graph_create_filter(&filt_out,
1870                                        avfilter_get_by_name("buffersink"),
1871                                        "ffplay_buffersink", NULL, NULL, graph);
1872     if (ret < 0)
1873         goto fail;
1874
1875     if ((ret = av_opt_set_int_list(filt_out, "pix_fmts", pix_fmts,  AV_PIX_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1876         goto fail;
1877
1878     last_filter = filt_out;
1879
1880 /* Note: this macro adds a filter before the lastly added filter, so the
1881  * processing order of the filters is in reverse */
1882 #define INSERT_FILT(name, arg) do {                                          \
1883     AVFilterContext *filt_ctx;                                               \
1884                                                                              \
1885     ret = avfilter_graph_create_filter(&filt_ctx,                            \
1886                                        avfilter_get_by_name(name),           \
1887                                        "ffplay_" name, arg, NULL, graph);    \
1888     if (ret < 0)                                                             \
1889         goto fail;                                                           \
1890                                                                              \
1891     ret = avfilter_link(filt_ctx, 0, last_filter, 0);                        \
1892     if (ret < 0)                                                             \
1893         goto fail;                                                           \
1894                                                                              \
1895     last_filter = filt_ctx;                                                  \
1896 } while (0)
1897
1898     if (autorotate) {
1899         double theta  = get_rotation(is->video_st);
1900
1901         if (fabs(theta - 90) < 1.0) {
1902             INSERT_FILT("transpose", "clock");
1903         } else if (fabs(theta - 180) < 1.0) {
1904             INSERT_FILT("hflip", NULL);
1905             INSERT_FILT("vflip", NULL);
1906         } else if (fabs(theta - 270) < 1.0) {
1907             INSERT_FILT("transpose", "cclock");
1908         } else if (fabs(theta) > 1.0) {
1909             char rotate_buf[64];
1910             snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
1911             INSERT_FILT("rotate", rotate_buf);
1912         }
1913     }
1914
1915     if ((ret = configure_filtergraph(graph, vfilters, filt_src, last_filter)) < 0)
1916         goto fail;
1917
1918     is->in_video_filter  = filt_src;
1919     is->out_video_filter = filt_out;
1920
1921 fail:
1922     return ret;
1923 }
1924
1925 static int configure_audio_filters(VideoState *is, const char *afilters, int force_output_format)
1926 {
1927     static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_NONE };
1928     int sample_rates[2] = { 0, -1 };
1929     int64_t channel_layouts[2] = { 0, -1 };
1930     int channels[2] = { 0, -1 };
1931     AVFilterContext *filt_asrc = NULL, *filt_asink = NULL;
1932     char aresample_swr_opts[512] = "";
1933     AVDictionaryEntry *e = NULL;
1934     char asrc_args[256];
1935     int ret;
1936
1937     avfilter_graph_free(&is->agraph);
1938     if (!(is->agraph = avfilter_graph_alloc()))
1939         return AVERROR(ENOMEM);
1940
1941     while ((e = av_dict_get(swr_opts, "", e, AV_DICT_IGNORE_SUFFIX)))
1942         av_strlcatf(aresample_swr_opts, sizeof(aresample_swr_opts), "%s=%s:", e->key, e->value);
1943     if (strlen(aresample_swr_opts))
1944         aresample_swr_opts[strlen(aresample_swr_opts)-1] = '\0';
1945     av_opt_set(is->agraph, "aresample_swr_opts", aresample_swr_opts, 0);
1946
1947     ret = snprintf(asrc_args, sizeof(asrc_args),
1948                    "sample_rate=%d:sample_fmt=%s:channels=%d:time_base=%d/%d",
1949                    is->audio_filter_src.freq, av_get_sample_fmt_name(is->audio_filter_src.fmt),
1950                    is->audio_filter_src.channels,
1951                    1, is->audio_filter_src.freq);
1952     if (is->audio_filter_src.channel_layout)
1953         snprintf(asrc_args + ret, sizeof(asrc_args) - ret,
1954                  ":channel_layout=0x%"PRIx64,  is->audio_filter_src.channel_layout);
1955
1956     ret = avfilter_graph_create_filter(&filt_asrc,
1957                                        avfilter_get_by_name("abuffer"), "ffplay_abuffer",
1958                                        asrc_args, NULL, is->agraph);
1959     if (ret < 0)
1960         goto end;
1961
1962
1963     ret = avfilter_graph_create_filter(&filt_asink,
1964                                        avfilter_get_by_name("abuffersink"), "ffplay_abuffersink",
1965                                        NULL, NULL, is->agraph);
1966     if (ret < 0)
1967         goto end;
1968
1969     if ((ret = av_opt_set_int_list(filt_asink, "sample_fmts", sample_fmts,  AV_SAMPLE_FMT_NONE, AV_OPT_SEARCH_CHILDREN)) < 0)
1970         goto end;
1971     if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
1972         goto end;
1973
1974     if (force_output_format) {
1975         channel_layouts[0] = is->audio_tgt.channel_layout;
1976         channels       [0] = is->audio_tgt.channels;
1977         sample_rates   [0] = is->audio_tgt.freq;
1978         if ((ret = av_opt_set_int(filt_asink, "all_channel_counts", 0, AV_OPT_SEARCH_CHILDREN)) < 0)
1979             goto end;
1980         if ((ret = av_opt_set_int_list(filt_asink, "channel_layouts", channel_layouts,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1981             goto end;
1982         if ((ret = av_opt_set_int_list(filt_asink, "channel_counts" , channels       ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1983             goto end;
1984         if ((ret = av_opt_set_int_list(filt_asink, "sample_rates"   , sample_rates   ,  -1, AV_OPT_SEARCH_CHILDREN)) < 0)
1985             goto end;
1986     }
1987
1988
1989     if ((ret = configure_filtergraph(is->agraph, afilters, filt_asrc, filt_asink)) < 0)
1990         goto end;
1991
1992     is->in_audio_filter  = filt_asrc;
1993     is->out_audio_filter = filt_asink;
1994
1995 end:
1996     if (ret < 0)
1997         avfilter_graph_free(&is->agraph);
1998     return ret;
1999 }
2000 #endif  /* CONFIG_AVFILTER */
2001
2002 static int audio_thread(void *arg)
2003 {
2004     VideoState *is = arg;
2005     AVFrame *frame = av_frame_alloc();
2006     Frame *af;
2007 #if CONFIG_AVFILTER
2008     int last_serial = -1;
2009     int64_t dec_channel_layout;
2010     int reconfigure;
2011 #endif
2012     int got_frame = 0;
2013     AVRational tb;
2014     int ret = 0;
2015
2016     if (!frame)
2017         return AVERROR(ENOMEM);
2018
2019     do {
2020         if ((got_frame = decoder_decode_frame(&is->auddec, frame, NULL)) < 0)
2021             goto the_end;
2022
2023         if (got_frame) {
2024                 tb = (AVRational){1, frame->sample_rate};
2025
2026 #if CONFIG_AVFILTER
2027                 dec_channel_layout = get_valid_channel_layout(frame->channel_layout, frame->channels);
2028
2029                 reconfigure =
2030                     cmp_audio_fmts(is->audio_filter_src.fmt, is->audio_filter_src.channels,
2031                                    frame->format, frame->channels)    ||
2032                     is->audio_filter_src.channel_layout != dec_channel_layout ||
2033                     is->audio_filter_src.freq           != frame->sample_rate ||
2034                     is->auddec.pkt_serial               != last_serial;
2035
2036                 if (reconfigure) {
2037                     char buf1[1024], buf2[1024];
2038                     av_get_channel_layout_string(buf1, sizeof(buf1), -1, is->audio_filter_src.channel_layout);
2039                     av_get_channel_layout_string(buf2, sizeof(buf2), -1, dec_channel_layout);
2040                     av_log(NULL, AV_LOG_DEBUG,
2041                            "Audio frame changed from rate:%d ch:%d fmt:%s layout:%s serial:%d to rate:%d ch:%d fmt:%s layout:%s serial:%d\n",
2042                            is->audio_filter_src.freq, is->audio_filter_src.channels, av_get_sample_fmt_name(is->audio_filter_src.fmt), buf1, last_serial,
2043                            frame->sample_rate, frame->channels, av_get_sample_fmt_name(frame->format), buf2, is->auddec.pkt_serial);
2044
2045                     is->audio_filter_src.fmt            = frame->format;
2046                     is->audio_filter_src.channels       = frame->channels;
2047                     is->audio_filter_src.channel_layout = dec_channel_layout;
2048                     is->audio_filter_src.freq           = frame->sample_rate;
2049                     last_serial                         = is->auddec.pkt_serial;
2050
2051                     if ((ret = configure_audio_filters(is, afilters, 1)) < 0)
2052                         goto the_end;
2053                 }
2054
2055             if ((ret = av_buffersrc_add_frame(is->in_audio_filter, frame)) < 0)
2056                 goto the_end;
2057
2058             while ((ret = av_buffersink_get_frame_flags(is->out_audio_filter, frame, 0)) >= 0) {
2059                 tb = av_buffersink_get_time_base(is->out_audio_filter);
2060 #endif
2061                 if (!(af = frame_queue_peek_writable(&is->sampq)))
2062                     goto the_end;
2063
2064                 af->pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2065                 af->pos = frame->pkt_pos;
2066                 af->serial = is->auddec.pkt_serial;
2067                 af->duration = av_q2d((AVRational){frame->nb_samples, frame->sample_rate});
2068
2069                 av_frame_move_ref(af->frame, frame);
2070                 frame_queue_push(&is->sampq);
2071
2072 #if CONFIG_AVFILTER
2073                 if (is->audioq.serial != is->auddec.pkt_serial)
2074                     break;
2075             }
2076             if (ret == AVERROR_EOF)
2077                 is->auddec.finished = is->auddec.pkt_serial;
2078 #endif
2079         }
2080     } while (ret >= 0 || ret == AVERROR(EAGAIN) || ret == AVERROR_EOF);
2081  the_end:
2082 #if CONFIG_AVFILTER
2083     avfilter_graph_free(&is->agraph);
2084 #endif
2085     av_frame_free(&frame);
2086     return ret;
2087 }
2088
2089 static int decoder_start(Decoder *d, int (*fn)(void *), void *arg)
2090 {
2091     packet_queue_start(d->queue);
2092     d->decoder_tid = SDL_CreateThread(fn, "decoder", arg);
2093     if (!d->decoder_tid) {
2094         av_log(NULL, AV_LOG_ERROR, "SDL_CreateThread(): %s\n", SDL_GetError());
2095         return AVERROR(ENOMEM);
2096     }
2097     return 0;
2098 }
2099
2100 static int video_thread(void *arg)
2101 {
2102     VideoState *is = arg;
2103     AVFrame *frame = av_frame_alloc();
2104     double pts;
2105     double duration;
2106     int ret;
2107     AVRational tb = is->video_st->time_base;
2108     AVRational frame_rate = av_guess_frame_rate(is->ic, is->video_st, NULL);
2109
2110 #if CONFIG_AVFILTER
2111     AVFilterGraph *graph = avfilter_graph_alloc();
2112     AVFilterContext *filt_out = NULL, *filt_in = NULL;
2113     int last_w = 0;
2114     int last_h = 0;
2115     enum AVPixelFormat last_format = -2;
2116     int last_serial = -1;
2117     int last_vfilter_idx = 0;
2118     if (!graph) {
2119         av_frame_free(&frame);
2120         return AVERROR(ENOMEM);
2121     }
2122
2123 #endif
2124
2125     if (!frame) {
2126 #if CONFIG_AVFILTER
2127         avfilter_graph_free(&graph);
2128 #endif
2129         return AVERROR(ENOMEM);
2130     }
2131
2132     for (;;) {
2133         ret = get_video_frame(is, frame);
2134         if (ret < 0)
2135             goto the_end;
2136         if (!ret)
2137             continue;
2138
2139 #if CONFIG_AVFILTER
2140         if (   last_w != frame->width
2141             || last_h != frame->height
2142             || last_format != frame->format
2143             || last_serial != is->viddec.pkt_serial
2144             || last_vfilter_idx != is->vfilter_idx) {
2145             av_log(NULL, AV_LOG_DEBUG,
2146                    "Video frame changed from size:%dx%d format:%s serial:%d to size:%dx%d format:%s serial:%d\n",
2147                    last_w, last_h,
2148                    (const char *)av_x_if_null(av_get_pix_fmt_name(last_format), "none"), last_serial,
2149                    frame->width, frame->height,
2150                    (const char *)av_x_if_null(av_get_pix_fmt_name(frame->format), "none"), is->viddec.pkt_serial);
2151             avfilter_graph_free(&graph);
2152             graph = avfilter_graph_alloc();
2153             if ((ret = configure_video_filters(graph, is, vfilters_list ? vfilters_list[is->vfilter_idx] : NULL, frame)) < 0) {
2154                 SDL_Event event;
2155                 event.type = FF_QUIT_EVENT;
2156                 event.user.data1 = is;
2157                 SDL_PushEvent(&event);
2158                 goto the_end;
2159             }
2160             filt_in  = is->in_video_filter;
2161             filt_out = is->out_video_filter;
2162             last_w = frame->width;
2163             last_h = frame->height;
2164             last_format = frame->format;
2165             last_serial = is->viddec.pkt_serial;
2166             last_vfilter_idx = is->vfilter_idx;
2167             frame_rate = av_buffersink_get_frame_rate(filt_out);
2168         }
2169
2170         ret = av_buffersrc_add_frame(filt_in, frame);
2171         if (ret < 0)
2172             goto the_end;
2173
2174         while (ret >= 0) {
2175             is->frame_last_returned_time = av_gettime_relative() / 1000000.0;
2176
2177             ret = av_buffersink_get_frame_flags(filt_out, frame, 0);
2178             if (ret < 0) {
2179                 if (ret == AVERROR_EOF)
2180                     is->viddec.finished = is->viddec.pkt_serial;
2181                 ret = 0;
2182                 break;
2183             }
2184
2185             is->frame_last_filter_delay = av_gettime_relative() / 1000000.0 - is->frame_last_returned_time;
2186             if (fabs(is->frame_last_filter_delay) > AV_NOSYNC_THRESHOLD / 10.0)
2187                 is->frame_last_filter_delay = 0;
2188             tb = av_buffersink_get_time_base(filt_out);
2189 #endif
2190             duration = (frame_rate.num && frame_rate.den ? av_q2d((AVRational){frame_rate.den, frame_rate.num}) : 0);
2191             pts = (frame->pts == AV_NOPTS_VALUE) ? NAN : frame->pts * av_q2d(tb);
2192             ret = queue_picture(is, frame, pts, duration, frame->pkt_pos, is->viddec.pkt_serial);
2193             av_frame_unref(frame);
2194 #if CONFIG_AVFILTER
2195         }
2196 #endif
2197
2198         if (ret < 0)
2199             goto the_end;
2200     }
2201  the_end:
2202 #if CONFIG_AVFILTER
2203     avfilter_graph_free(&graph);
2204 #endif
2205     av_frame_free(&frame);
2206     return 0;
2207 }
2208
2209 static int subtitle_thread(void *arg)
2210 {
2211     VideoState *is = arg;
2212     Frame *sp;
2213     int got_subtitle;
2214     double pts;
2215
2216     for (;;) {
2217         if (!(sp = frame_queue_peek_writable(&is->subpq)))
2218             return 0;
2219
2220         if ((got_subtitle = decoder_decode_frame(&is->subdec, NULL, &sp->sub)) < 0)
2221             break;
2222
2223         pts = 0;
2224
2225         if (got_subtitle && sp->sub.format == 0) {
2226             if (sp->sub.pts != AV_NOPTS_VALUE)
2227                 pts = sp->sub.pts / (double)AV_TIME_BASE;
2228             sp->pts = pts;
2229             sp->serial = is->subdec.pkt_serial;
2230             sp->width = is->subdec.avctx->width;
2231             sp->height = is->subdec.avctx->height;
2232             sp->uploaded = 0;
2233
2234             /* now we can update the picture count */
2235             frame_queue_push(&is->subpq);
2236         } else if (got_subtitle) {
2237             avsubtitle_free(&sp->sub);
2238         }
2239     }
2240     return 0;
2241 }
2242
2243 /* copy samples for viewing in editor window */
2244 static void update_sample_display(VideoState *is, short *samples, int samples_size)
2245 {
2246     int size, len;
2247
2248     size = samples_size / sizeof(short);
2249     while (size > 0) {
2250         len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
2251         if (len > size)
2252             len = size;
2253         memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
2254         samples += len;
2255         is->sample_array_index += len;
2256         if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
2257             is->sample_array_index = 0;
2258         size -= len;
2259     }
2260 }
2261
2262 /* return the wanted number of samples to get better sync if sync_type is video
2263  * or external master clock */
2264 static int synchronize_audio(VideoState *is, int nb_samples)
2265 {
2266     int wanted_nb_samples = nb_samples;
2267
2268     /* if not master, then we try to remove or add samples to correct the clock */
2269     if (get_master_sync_type(is) != AV_SYNC_AUDIO_MASTER) {
2270         double diff, avg_diff;
2271         int min_nb_samples, max_nb_samples;
2272
2273         diff = get_clock(&is->audclk) - get_master_clock(is);
2274
2275         if (!isnan(diff) && fabs(diff) < AV_NOSYNC_THRESHOLD) {
2276             is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
2277             if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
2278                 /* not enough measures to have a correct estimate */
2279                 is->audio_diff_avg_count++;
2280             } else {
2281                 /* estimate the A-V difference */
2282                 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
2283
2284                 if (fabs(avg_diff) >= is->audio_diff_threshold) {
2285                     wanted_nb_samples = nb_samples + (int)(diff * is->audio_src.freq);
2286                     min_nb_samples = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2287                     max_nb_samples = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX) / 100));
2288                     wanted_nb_samples = av_clip(wanted_nb_samples, min_nb_samples, max_nb_samples);
2289                 }
2290                 av_log(NULL, AV_LOG_TRACE, "diff=%f adiff=%f sample_diff=%d apts=%0.3f %f\n",
2291                         diff, avg_diff, wanted_nb_samples - nb_samples,
2292                         is->audio_clock, is->audio_diff_threshold);
2293             }
2294         } else {
2295             /* too big difference : may be initial PTS errors, so
2296                reset A-V filter */
2297             is->audio_diff_avg_count = 0;
2298             is->audio_diff_cum       = 0;
2299         }
2300     }
2301
2302     return wanted_nb_samples;
2303 }
2304
2305 /**
2306  * Decode one audio frame and return its uncompressed size.
2307  *
2308  * The processed audio frame is decoded, converted if required, and
2309  * stored in is->audio_buf, with size in bytes given by the return
2310  * value.
2311  */
2312 static int audio_decode_frame(VideoState *is)
2313 {
2314     int data_size, resampled_data_size;
2315     int64_t dec_channel_layout;
2316     av_unused double audio_clock0;
2317     int wanted_nb_samples;
2318     Frame *af;
2319
2320     if (is->paused)
2321         return -1;
2322
2323     do {
2324 #if defined(_WIN32)
2325         while (frame_queue_nb_remaining(&is->sampq) == 0) {
2326             if ((av_gettime_relative() - audio_callback_time) > 1000000LL * is->audio_hw_buf_size / is->audio_tgt.bytes_per_sec / 2)
2327                 return -1;
2328             av_usleep (1000);
2329         }
2330 #endif
2331         if (!(af = frame_queue_peek_readable(&is->sampq)))
2332             return -1;
2333         frame_queue_next(&is->sampq);
2334     } while (af->serial != is->audioq.serial);
2335
2336     data_size = av_samples_get_buffer_size(NULL, af->frame->channels,
2337                                            af->frame->nb_samples,
2338                                            af->frame->format, 1);
2339
2340     dec_channel_layout =
2341         (af->frame->channel_layout && af->frame->channels == av_get_channel_layout_nb_channels(af->frame->channel_layout)) ?
2342         af->frame->channel_layout : av_get_default_channel_layout(af->frame->channels);
2343     wanted_nb_samples = synchronize_audio(is, af->frame->nb_samples);
2344
2345     if (af->frame->format        != is->audio_src.fmt            ||
2346         dec_channel_layout       != is->audio_src.channel_layout ||
2347         af->frame->sample_rate   != is->audio_src.freq           ||
2348         (wanted_nb_samples       != af->frame->nb_samples && !is->swr_ctx)) {
2349         swr_free(&is->swr_ctx);
2350         is->swr_ctx = swr_alloc_set_opts(NULL,
2351                                          is->audio_tgt.channel_layout, is->audio_tgt.fmt, is->audio_tgt.freq,
2352                                          dec_channel_layout,           af->frame->format, af->frame->sample_rate,
2353                                          0, NULL);
2354         if (!is->swr_ctx || swr_init(is->swr_ctx) < 0) {
2355             av_log(NULL, AV_LOG_ERROR,
2356                    "Cannot create sample rate converter for conversion of %d Hz %s %d channels to %d Hz %s %d channels!\n",
2357                     af->frame->sample_rate, av_get_sample_fmt_name(af->frame->format), af->frame->channels,
2358                     is->audio_tgt.freq, av_get_sample_fmt_name(is->audio_tgt.fmt), is->audio_tgt.channels);
2359             swr_free(&is->swr_ctx);
2360             return -1;
2361         }
2362         is->audio_src.channel_layout = dec_channel_layout;
2363         is->audio_src.channels       = af->frame->channels;
2364         is->audio_src.freq = af->frame->sample_rate;
2365         is->audio_src.fmt = af->frame->format;
2366     }
2367
2368     if (is->swr_ctx) {
2369         const uint8_t **in = (const uint8_t **)af->frame->extended_data;
2370         uint8_t **out = &is->audio_buf1;
2371         int out_count = (int64_t)wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate + 256;
2372         int out_size  = av_samples_get_buffer_size(NULL, is->audio_tgt.channels, out_count, is->audio_tgt.fmt, 0);
2373         int len2;
2374         if (out_size < 0) {
2375             av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size() failed\n");
2376             return -1;
2377         }
2378         if (wanted_nb_samples != af->frame->nb_samples) {
2379             if (swr_set_compensation(is->swr_ctx, (wanted_nb_samples - af->frame->nb_samples) * is->audio_tgt.freq / af->frame->sample_rate,
2380                                         wanted_nb_samples * is->audio_tgt.freq / af->frame->sample_rate) < 0) {
2381                 av_log(NULL, AV_LOG_ERROR, "swr_set_compensation() failed\n");
2382                 return -1;
2383             }
2384         }
2385         av_fast_malloc(&is->audio_buf1, &is->audio_buf1_size, out_size);
2386         if (!is->audio_buf1)
2387             return AVERROR(ENOMEM);
2388         len2 = swr_convert(is->swr_ctx, out, out_count, in, af->frame->nb_samples);
2389         if (len2 < 0) {
2390             av_log(NULL, AV_LOG_ERROR, "swr_convert() failed\n");
2391             return -1;
2392         }
2393         if (len2 == out_count) {
2394             av_log(NULL, AV_LOG_WARNING, "audio buffer is probably too small\n");
2395             if (swr_init(is->swr_ctx) < 0)
2396                 swr_free(&is->swr_ctx);
2397         }
2398         is->audio_buf = is->audio_buf1;
2399         resampled_data_size = len2 * is->audio_tgt.channels * av_get_bytes_per_sample(is->audio_tgt.fmt);
2400     } else {
2401         is->audio_buf = af->frame->data[0];
2402         resampled_data_size = data_size;
2403     }
2404
2405     audio_clock0 = is->audio_clock;
2406     /* update the audio clock with the pts */
2407     if (!isnan(af->pts))
2408         is->audio_clock = af->pts + (double) af->frame->nb_samples / af->frame->sample_rate;
2409     else
2410         is->audio_clock = NAN;
2411     is->audio_clock_serial = af->serial;
2412 #ifdef DEBUG
2413     {
2414         static double last_clock;
2415         printf("audio: delay=%0.3f clock=%0.3f clock0=%0.3f\n",
2416                is->audio_clock - last_clock,
2417                is->audio_clock, audio_clock0);
2418         last_clock = is->audio_clock;
2419     }
2420 #endif
2421     return resampled_data_size;
2422 }
2423
2424 /* prepare a new audio buffer */
2425 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2426 {
2427     VideoState *is = opaque;
2428     int audio_size, len1;
2429
2430     audio_callback_time = av_gettime_relative();
2431
2432     while (len > 0) {
2433         if (is->audio_buf_index >= is->audio_buf_size) {
2434            audio_size = audio_decode_frame(is);
2435            if (audio_size < 0) {
2436                 /* if error, just output silence */
2437                is->audio_buf = NULL;
2438                is->audio_buf_size = SDL_AUDIO_MIN_BUFFER_SIZE / is->audio_tgt.frame_size * is->audio_tgt.frame_size;
2439            } else {
2440                if (is->show_mode != SHOW_MODE_VIDEO)
2441                    update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2442                is->audio_buf_size = audio_size;
2443            }
2444            is->audio_buf_index = 0;
2445         }
2446         len1 = is->audio_buf_size - is->audio_buf_index;
2447         if (len1 > len)
2448             len1 = len;
2449         if (!is->muted && is->audio_buf && is->audio_volume == SDL_MIX_MAXVOLUME)
2450             memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2451         else {
2452             memset(stream, 0, len1);
2453             if (!is->muted && is->audio_buf)
2454                 SDL_MixAudioFormat(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, AUDIO_S16SYS, len1, is->audio_volume);
2455         }
2456         len -= len1;
2457         stream += len1;
2458         is->audio_buf_index += len1;
2459     }
2460     is->audio_write_buf_size = is->audio_buf_size - is->audio_buf_index;
2461     /* Let's assume the audio driver that is used by SDL has two periods. */
2462     if (!isnan(is->audio_clock)) {
2463         set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / is->audio_tgt.bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);
2464         sync_clock_to_slave(&is->extclk, &is->audclk);
2465     }
2466 }
2467
2468 static int audio_open(void *opaque, int64_t wanted_channel_layout, int wanted_nb_channels, int wanted_sample_rate, struct AudioParams *audio_hw_params)
2469 {
2470     SDL_AudioSpec wanted_spec, spec;
2471     const char *env;
2472     static const int next_nb_channels[] = {0, 0, 1, 6, 2, 6, 4, 6};
2473     static const int next_sample_rates[] = {0, 44100, 48000, 96000, 192000};
2474     int next_sample_rate_idx = FF_ARRAY_ELEMS(next_sample_rates) - 1;
2475
2476     env = SDL_getenv("SDL_AUDIO_CHANNELS");
2477     if (env) {
2478         wanted_nb_channels = atoi(env);
2479         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2480     }
2481     if (!wanted_channel_layout || wanted_nb_channels != av_get_channel_layout_nb_channels(wanted_channel_layout)) {
2482         wanted_channel_layout = av_get_default_channel_layout(wanted_nb_channels);
2483         wanted_channel_layout &= ~AV_CH_LAYOUT_STEREO_DOWNMIX;
2484     }
2485     wanted_nb_channels = av_get_channel_layout_nb_channels(wanted_channel_layout);
2486     wanted_spec.channels = wanted_nb_channels;
2487     wanted_spec.freq = wanted_sample_rate;
2488     if (wanted_spec.freq <= 0 || wanted_spec.channels <= 0) {
2489         av_log(NULL, AV_LOG_ERROR, "Invalid sample rate or channel count!\n");
2490         return -1;
2491     }
2492     while (next_sample_rate_idx && next_sample_rates[next_sample_rate_idx] >= wanted_spec.freq)
2493         next_sample_rate_idx--;
2494     wanted_spec.format = AUDIO_S16SYS;
2495     wanted_spec.silence = 0;
2496     wanted_spec.samples = FFMAX(SDL_AUDIO_MIN_BUFFER_SIZE, 2 << av_log2(wanted_spec.freq / SDL_AUDIO_MAX_CALLBACKS_PER_SEC));
2497     wanted_spec.callback = sdl_audio_callback;
2498     wanted_spec.userdata = opaque;
2499     while (!(audio_dev = SDL_OpenAudioDevice(NULL, 0, &wanted_spec, &spec, SDL_AUDIO_ALLOW_FREQUENCY_CHANGE | SDL_AUDIO_ALLOW_CHANNELS_CHANGE))) {
2500         av_log(NULL, AV_LOG_WARNING, "SDL_OpenAudio (%d channels, %d Hz): %s\n",
2501                wanted_spec.channels, wanted_spec.freq, SDL_GetError());
2502         wanted_spec.channels = next_nb_channels[FFMIN(7, wanted_spec.channels)];
2503         if (!wanted_spec.channels) {
2504             wanted_spec.freq = next_sample_rates[next_sample_rate_idx--];
2505             wanted_spec.channels = wanted_nb_channels;
2506             if (!wanted_spec.freq) {
2507                 av_log(NULL, AV_LOG_ERROR,
2508                        "No more combinations to try, audio open failed\n");
2509                 return -1;
2510             }
2511         }
2512         wanted_channel_layout = av_get_default_channel_layout(wanted_spec.channels);
2513     }
2514     if (spec.format != AUDIO_S16SYS) {
2515         av_log(NULL, AV_LOG_ERROR,
2516                "SDL advised audio format %d is not supported!\n", spec.format);
2517         return -1;
2518     }
2519     if (spec.channels != wanted_spec.channels) {
2520         wanted_channel_layout = av_get_default_channel_layout(spec.channels);
2521         if (!wanted_channel_layout) {
2522             av_log(NULL, AV_LOG_ERROR,
2523                    "SDL advised channel count %d is not supported!\n", spec.channels);
2524             return -1;
2525         }
2526     }
2527
2528     audio_hw_params->fmt = AV_SAMPLE_FMT_S16;
2529     audio_hw_params->freq = spec.freq;
2530     audio_hw_params->channel_layout = wanted_channel_layout;
2531     audio_hw_params->channels =  spec.channels;
2532     audio_hw_params->frame_size = av_samples_get_buffer_size(NULL, audio_hw_params->channels, 1, audio_hw_params->fmt, 1);
2533     audio_hw_params->bytes_per_sec = av_samples_get_buffer_size(NULL, audio_hw_params->channels, audio_hw_params->freq, audio_hw_params->fmt, 1);
2534     if (audio_hw_params->bytes_per_sec <= 0 || audio_hw_params->frame_size <= 0) {
2535         av_log(NULL, AV_LOG_ERROR, "av_samples_get_buffer_size failed\n");
2536         return -1;
2537     }
2538     return spec.size;
2539 }
2540
2541 /* open a given stream. Return 0 if OK */
2542 static int stream_component_open(VideoState *is, int stream_index)
2543 {
2544     AVFormatContext *ic = is->ic;
2545     AVCodecContext *avctx;
2546     AVCodec *codec;
2547     const char *forced_codec_name = NULL;
2548     AVDictionary *opts = NULL;
2549     AVDictionaryEntry *t = NULL;
2550     int sample_rate, nb_channels;
2551     int64_t channel_layout;
2552     int ret = 0;
2553     int stream_lowres = lowres;
2554
2555     if (stream_index < 0 || stream_index >= ic->nb_streams)
2556         return -1;
2557
2558     avctx = avcodec_alloc_context3(NULL);
2559     if (!avctx)
2560         return AVERROR(ENOMEM);
2561
2562     ret = avcodec_parameters_to_context(avctx, ic->streams[stream_index]->codecpar);
2563     if (ret < 0)
2564         goto fail;
2565     avctx->pkt_timebase = ic->streams[stream_index]->time_base;
2566
2567     codec = avcodec_find_decoder(avctx->codec_id);
2568
2569     switch(avctx->codec_type){
2570         case AVMEDIA_TYPE_AUDIO   : is->last_audio_stream    = stream_index; forced_codec_name =    audio_codec_name; break;
2571         case AVMEDIA_TYPE_SUBTITLE: is->last_subtitle_stream = stream_index; forced_codec_name = subtitle_codec_name; break;
2572         case AVMEDIA_TYPE_VIDEO   : is->last_video_stream    = stream_index; forced_codec_name =    video_codec_name; break;
2573     }
2574     if (forced_codec_name)
2575         codec = avcodec_find_decoder_by_name(forced_codec_name);
2576     if (!codec) {
2577         if (forced_codec_name) av_log(NULL, AV_LOG_WARNING,
2578                                       "No codec could be found with name '%s'\n", forced_codec_name);
2579         else                   av_log(NULL, AV_LOG_WARNING,
2580                                       "No codec could be found with id %d\n", avctx->codec_id);
2581         ret = AVERROR(EINVAL);
2582         goto fail;
2583     }
2584
2585     avctx->codec_id = codec->id;
2586     if (stream_lowres > codec->max_lowres) {
2587         av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2588                 codec->max_lowres);
2589         stream_lowres = codec->max_lowres;
2590     }
2591     avctx->lowres = stream_lowres;
2592
2593     if (fast)
2594         avctx->flags2 |= AV_CODEC_FLAG2_FAST;
2595
2596     opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], codec);
2597     if (!av_dict_get(opts, "threads", NULL, 0))
2598         av_dict_set(&opts, "threads", "auto", 0);
2599     if (stream_lowres)
2600         av_dict_set_int(&opts, "lowres", stream_lowres, 0);
2601     if (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
2602         av_dict_set(&opts, "refcounted_frames", "1", 0);
2603     if ((ret = avcodec_open2(avctx, codec, &opts)) < 0) {
2604         goto fail;
2605     }
2606     if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2607         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2608         ret =  AVERROR_OPTION_NOT_FOUND;
2609         goto fail;
2610     }
2611
2612     is->eof = 0;
2613     ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2614     switch (avctx->codec_type) {
2615     case AVMEDIA_TYPE_AUDIO:
2616 #if CONFIG_AVFILTER
2617         {
2618             AVFilterContext *sink;
2619
2620             is->audio_filter_src.freq           = avctx->sample_rate;
2621             is->audio_filter_src.channels       = avctx->channels;
2622             is->audio_filter_src.channel_layout = get_valid_channel_layout(avctx->channel_layout, avctx->channels);
2623             is->audio_filter_src.fmt            = avctx->sample_fmt;
2624             if ((ret = configure_audio_filters(is, afilters, 0)) < 0)
2625                 goto fail;
2626             sink = is->out_audio_filter;
2627             sample_rate    = av_buffersink_get_sample_rate(sink);
2628             nb_channels    = av_buffersink_get_channels(sink);
2629             channel_layout = av_buffersink_get_channel_layout(sink);
2630         }
2631 #else
2632         sample_rate    = avctx->sample_rate;
2633         nb_channels    = avctx->channels;
2634         channel_layout = avctx->channel_layout;
2635 #endif
2636
2637         /* prepare audio output */
2638         if ((ret = audio_open(is, channel_layout, nb_channels, sample_rate, &is->audio_tgt)) < 0)
2639             goto fail;
2640         is->audio_hw_buf_size = ret;
2641         is->audio_src = is->audio_tgt;
2642         is->audio_buf_size  = 0;
2643         is->audio_buf_index = 0;
2644
2645         /* init averaging filter */
2646         is->audio_diff_avg_coef  = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2647         is->audio_diff_avg_count = 0;
2648         /* since we do not have a precise anough audio FIFO fullness,
2649            we correct audio sync only if larger than this threshold */
2650         is->audio_diff_threshold = (double)(is->audio_hw_buf_size) / is->audio_tgt.bytes_per_sec;
2651
2652         is->audio_stream = stream_index;
2653         is->audio_st = ic->streams[stream_index];
2654
2655         decoder_init(&is->auddec, avctx, &is->audioq, is->continue_read_thread);
2656         if ((is->ic->iformat->flags & (AVFMT_NOBINSEARCH | AVFMT_NOGENSEARCH | AVFMT_NO_BYTE_SEEK)) && !is->ic->iformat->read_seek) {
2657             is->auddec.start_pts = is->audio_st->start_time;
2658             is->auddec.start_pts_tb = is->audio_st->time_base;
2659         }
2660         if ((ret = decoder_start(&is->auddec, audio_thread, is)) < 0)
2661             goto out;
2662         SDL_PauseAudioDevice(audio_dev, 0);
2663         break;
2664     case AVMEDIA_TYPE_VIDEO:
2665         is->video_stream = stream_index;
2666         is->video_st = ic->streams[stream_index];
2667
2668         decoder_init(&is->viddec, avctx, &is->videoq, is->continue_read_thread);
2669         if ((ret = decoder_start(&is->viddec, video_thread, is)) < 0)
2670             goto out;
2671         is->queue_attachments_req = 1;
2672         break;
2673     case AVMEDIA_TYPE_SUBTITLE:
2674         is->subtitle_stream = stream_index;
2675         is->subtitle_st = ic->streams[stream_index];
2676
2677         decoder_init(&is->subdec, avctx, &is->subtitleq, is->continue_read_thread);
2678         if ((ret = decoder_start(&is->subdec, subtitle_thread, is)) < 0)
2679             goto out;
2680         break;
2681     default:
2682         break;
2683     }
2684     goto out;
2685
2686 fail:
2687     avcodec_free_context(&avctx);
2688 out:
2689     av_dict_free(&opts);
2690
2691     return ret;
2692 }
2693
2694 static int decode_interrupt_cb(void *ctx)
2695 {
2696     VideoState *is = ctx;
2697     return is->abort_request;
2698 }
2699
2700 static int stream_has_enough_packets(AVStream *st, int stream_id, PacketQueue *queue) {
2701     return stream_id < 0 ||
2702            queue->abort_request ||
2703            (st->disposition & AV_DISPOSITION_ATTACHED_PIC) ||
2704            queue->nb_packets > MIN_FRAMES && (!queue->duration || av_q2d(st->time_base) * queue->duration > 1.0);
2705 }
2706
2707 static int is_realtime(AVFormatContext *s)
2708 {
2709     if(   !strcmp(s->iformat->name, "rtp")
2710        || !strcmp(s->iformat->name, "rtsp")
2711        || !strcmp(s->iformat->name, "sdp")
2712     )
2713         return 1;
2714
2715     if(s->pb && (   !strncmp(s->url, "rtp:", 4)
2716                  || !strncmp(s->url, "udp:", 4)
2717                 )
2718     )
2719         return 1;
2720     return 0;
2721 }
2722
2723 /* this thread gets the stream from the disk or the network */
2724 static int read_thread(void *arg)
2725 {
2726     VideoState *is = arg;
2727     AVFormatContext *ic = NULL;
2728     int err, i, ret;
2729     int st_index[AVMEDIA_TYPE_NB];
2730     AVPacket pkt1, *pkt = &pkt1;
2731     int64_t stream_start_time;
2732     int pkt_in_play_range = 0;
2733     AVDictionaryEntry *t;
2734     SDL_mutex *wait_mutex = SDL_CreateMutex();
2735     int scan_all_pmts_set = 0;
2736     int64_t pkt_ts;
2737
2738     if (!wait_mutex) {
2739         av_log(NULL, AV_LOG_FATAL, "SDL_CreateMutex(): %s\n", SDL_GetError());
2740         ret = AVERROR(ENOMEM);
2741         goto fail;
2742     }
2743
2744     memset(st_index, -1, sizeof(st_index));
2745     is->last_video_stream = is->video_stream = -1;
2746     is->last_audio_stream = is->audio_stream = -1;
2747     is->last_subtitle_stream = is->subtitle_stream = -1;
2748     is->eof = 0;
2749
2750     ic = avformat_alloc_context();
2751     if (!ic) {
2752         av_log(NULL, AV_LOG_FATAL, "Could not allocate context.\n");
2753         ret = AVERROR(ENOMEM);
2754         goto fail;
2755     }
2756     ic->interrupt_callback.callback = decode_interrupt_cb;
2757     ic->interrupt_callback.opaque = is;
2758     if (!av_dict_get(format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE)) {
2759         av_dict_set(&format_opts, "scan_all_pmts", "1", AV_DICT_DONT_OVERWRITE);
2760         scan_all_pmts_set = 1;
2761     }
2762     err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2763     if (err < 0) {
2764         print_error(is->filename, err);
2765         ret = -1;
2766         goto fail;
2767     }
2768     if (scan_all_pmts_set)
2769         av_dict_set(&format_opts, "scan_all_pmts", NULL, AV_DICT_MATCH_CASE);
2770
2771     if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2772         av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2773         ret = AVERROR_OPTION_NOT_FOUND;
2774         goto fail;
2775     }
2776     is->ic = ic;
2777
2778     if (genpts)
2779         ic->flags |= AVFMT_FLAG_GENPTS;
2780
2781     av_format_inject_global_side_data(ic);
2782
2783     if (find_stream_info) {
2784         AVDictionary **opts = setup_find_stream_info_opts(ic, codec_opts);
2785         int orig_nb_streams = ic->nb_streams;
2786
2787         err = avformat_find_stream_info(ic, opts);
2788
2789         for (i = 0; i < orig_nb_streams; i++)
2790             av_dict_free(&opts[i]);
2791         av_freep(&opts);
2792
2793         if (err < 0) {
2794             av_log(NULL, AV_LOG_WARNING,
2795                    "%s: could not find codec parameters\n", is->filename);
2796             ret = -1;
2797             goto fail;
2798         }
2799     }
2800
2801     if (ic->pb)
2802         ic->pb->eof_reached = 0; // FIXME hack, ffplay maybe should not use avio_feof() to test for the end
2803
2804     if (seek_by_bytes < 0)
2805         seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT) && strcmp("ogg", ic->iformat->name);
2806
2807     is->max_frame_duration = (ic->iformat->flags & AVFMT_TS_DISCONT) ? 10.0 : 3600.0;
2808
2809     if (!window_title && (t = av_dict_get(ic->metadata, "title", NULL, 0)))
2810         window_title = av_asprintf("%s - %s", t->value, input_filename);
2811
2812     /* if seeking requested, we execute it */
2813     if (start_time != AV_NOPTS_VALUE) {
2814         int64_t timestamp;
2815
2816         timestamp = start_time;
2817         /* add the stream start time */
2818         if (ic->start_time != AV_NOPTS_VALUE)
2819             timestamp += ic->start_time;
2820         ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2821         if (ret < 0) {
2822             av_log(NULL, AV_LOG_WARNING, "%s: could not seek to position %0.3f\n",
2823                     is->filename, (double)timestamp / AV_TIME_BASE);
2824         }
2825     }
2826
2827     is->realtime = is_realtime(ic);
2828
2829     if (show_status)
2830         av_dump_format(ic, 0, is->filename, 0);
2831
2832     for (i = 0; i < ic->nb_streams; i++) {
2833         AVStream *st = ic->streams[i];
2834         enum AVMediaType type = st->codecpar->codec_type;
2835         st->discard = AVDISCARD_ALL;
2836         if (type >= 0 && wanted_stream_spec[type] && st_index[type] == -1)
2837             if (avformat_match_stream_specifier(ic, st, wanted_stream_spec[type]) > 0)
2838                 st_index[type] = i;
2839     }
2840     for (i = 0; i < AVMEDIA_TYPE_NB; i++) {
2841         if (wanted_stream_spec[i] && st_index[i] == -1) {
2842             av_log(NULL, AV_LOG_ERROR, "Stream specifier %s does not match any %s stream\n", wanted_stream_spec[i], av_get_media_type_string(i));
2843             st_index[i] = INT_MAX;
2844         }
2845     }
2846
2847     if (!video_disable)
2848         st_index[AVMEDIA_TYPE_VIDEO] =
2849             av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2850                                 st_index[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2851     if (!audio_disable)
2852         st_index[AVMEDIA_TYPE_AUDIO] =
2853             av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2854                                 st_index[AVMEDIA_TYPE_AUDIO],
2855                                 st_index[AVMEDIA_TYPE_VIDEO],
2856                                 NULL, 0);
2857     if (!video_disable && !subtitle_disable)
2858         st_index[AVMEDIA_TYPE_SUBTITLE] =
2859             av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2860                                 st_index[AVMEDIA_TYPE_SUBTITLE],
2861                                 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2862                                  st_index[AVMEDIA_TYPE_AUDIO] :
2863                                  st_index[AVMEDIA_TYPE_VIDEO]),
2864                                 NULL, 0);
2865
2866     is->show_mode = show_mode;
2867     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2868         AVStream *st = ic->streams[st_index[AVMEDIA_TYPE_VIDEO]];
2869         AVCodecParameters *codecpar = st->codecpar;
2870         AVRational sar = av_guess_sample_aspect_ratio(ic, st, NULL);
2871         if (codecpar->width)
2872             set_default_window_size(codecpar->width, codecpar->height, sar);
2873     }
2874
2875     /* open the streams */
2876     if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2877         stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2878     }
2879
2880     ret = -1;
2881     if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2882         ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2883     }
2884     if (is->show_mode == SHOW_MODE_NONE)
2885         is->show_mode = ret >= 0 ? SHOW_MODE_VIDEO : SHOW_MODE_RDFT;
2886
2887     if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2888         stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2889     }
2890
2891     if (is->video_stream < 0 && is->audio_stream < 0) {
2892         av_log(NULL, AV_LOG_FATAL, "Failed to open file '%s' or configure filtergraph\n",
2893                is->filename);
2894         ret = -1;
2895         goto fail;
2896     }
2897
2898     if (infinite_buffer < 0 && is->realtime)
2899         infinite_buffer = 1;
2900
2901     for (;;) {
2902         if (is->abort_request)
2903             break;
2904         if (is->paused != is->last_paused) {
2905             is->last_paused = is->paused;
2906             if (is->paused)
2907                 is->read_pause_return = av_read_pause(ic);
2908             else
2909                 av_read_play(ic);
2910         }
2911 #if CONFIG_RTSP_DEMUXER || CONFIG_MMSH_PROTOCOL
2912         if (is->paused &&
2913                 (!strcmp(ic->iformat->name, "rtsp") ||
2914                  (ic->pb && !strncmp(input_filename, "mmsh:", 5)))) {
2915             /* wait 10 ms to avoid trying to get another packet */
2916             /* XXX: horrible */
2917             SDL_Delay(10);
2918             continue;
2919         }
2920 #endif
2921         if (is->seek_req) {
2922             int64_t seek_target = is->seek_pos;
2923             int64_t seek_min    = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2924             int64_t seek_max    = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2925 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2926 //      of the seek_pos/seek_rel variables
2927
2928             ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2929             if (ret < 0) {
2930                 av_log(NULL, AV_LOG_ERROR,
2931                        "%s: error while seeking\n", is->ic->url);
2932             } else {
2933                 if (is->audio_stream >= 0) {
2934                     packet_queue_flush(&is->audioq);
2935                     packet_queue_put(&is->audioq, &flush_pkt);
2936                 }
2937                 if (is->subtitle_stream >= 0) {
2938                     packet_queue_flush(&is->subtitleq);
2939                     packet_queue_put(&is->subtitleq, &flush_pkt);
2940                 }
2941                 if (is->video_stream >= 0) {
2942                     packet_queue_flush(&is->videoq);
2943                     packet_queue_put(&is->videoq, &flush_pkt);
2944                 }
2945                 if (is->seek_flags & AVSEEK_FLAG_BYTE) {
2946                    set_clock(&is->extclk, NAN, 0);
2947                 } else {
2948                    set_clock(&is->extclk, seek_target / (double)AV_TIME_BASE, 0);
2949                 }
2950             }
2951             is->seek_req = 0;
2952             is->queue_attachments_req = 1;
2953             is->eof = 0;
2954             if (is->paused)
2955                 step_to_next_frame(is);
2956         }
2957         if (is->queue_attachments_req) {
2958             if (is->video_st && is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC) {
2959                 AVPacket copy = { 0 };
2960                 if ((ret = av_packet_ref(&copy, &is->video_st->attached_pic)) < 0)
2961                     goto fail;
2962                 packet_queue_put(&is->videoq, &copy);
2963                 packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2964             }
2965             is->queue_attachments_req = 0;
2966         }
2967
2968         /* if the queue are full, no need to read more */
2969         if (infinite_buffer<1 &&
2970               (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2971             || (stream_has_enough_packets(is->audio_st, is->audio_stream, &is->audioq) &&
2972                 stream_has_enough_packets(is->video_st, is->video_stream, &is->videoq) &&
2973                 stream_has_enough_packets(is->subtitle_st, is->subtitle_stream, &is->subtitleq)))) {
2974             /* wait 10 ms */
2975             SDL_LockMutex(wait_mutex);
2976             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
2977             SDL_UnlockMutex(wait_mutex);
2978             continue;
2979         }
2980         if (!is->paused &&
2981             (!is->audio_st || (is->auddec.finished == is->audioq.serial && frame_queue_nb_remaining(&is->sampq) == 0)) &&
2982             (!is->video_st || (is->viddec.finished == is->videoq.serial && frame_queue_nb_remaining(&is->pictq) == 0))) {
2983             if (loop != 1 && (!loop || --loop)) {
2984                 stream_seek(is, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2985             } else if (autoexit) {
2986                 ret = AVERROR_EOF;
2987                 goto fail;
2988             }
2989         }
2990         ret = av_read_frame(ic, pkt);
2991         if (ret < 0) {
2992             if ((ret == AVERROR_EOF || avio_feof(ic->pb)) && !is->eof) {
2993                 if (is->video_stream >= 0)
2994                     packet_queue_put_nullpacket(&is->videoq, is->video_stream);
2995                 if (is->audio_stream >= 0)
2996                     packet_queue_put_nullpacket(&is->audioq, is->audio_stream);
2997                 if (is->subtitle_stream >= 0)
2998                     packet_queue_put_nullpacket(&is->subtitleq, is->subtitle_stream);
2999                 is->eof = 1;
3000             }
3001             if (ic->pb && ic->pb->error)
3002                 break;
3003             SDL_LockMutex(wait_mutex);
3004             SDL_CondWaitTimeout(is->continue_read_thread, wait_mutex, 10);
3005             SDL_UnlockMutex(wait_mutex);
3006             continue;
3007         } else {
3008             is->eof = 0;
3009         }
3010         /* check if packet is in play range specified by user, then queue, otherwise discard */
3011         stream_start_time = ic->streams[pkt->stream_index]->start_time;
3012         pkt_ts = pkt->pts == AV_NOPTS_VALUE ? pkt->dts : pkt->pts;
3013         pkt_in_play_range = duration == AV_NOPTS_VALUE ||
3014                 (pkt_ts - (stream_start_time != AV_NOPTS_VALUE ? stream_start_time : 0)) *
3015                 av_q2d(ic->streams[pkt->stream_index]->time_base) -
3016                 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
3017                 <= ((double)duration / 1000000);
3018         if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
3019             packet_queue_put(&is->audioq, pkt);
3020         } else if (pkt->stream_index == is->video_stream && pkt_in_play_range
3021                    && !(is->video_st->disposition & AV_DISPOSITION_ATTACHED_PIC)) {
3022             packet_queue_put(&is->videoq, pkt);
3023         } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
3024             packet_queue_put(&is->subtitleq, pkt);
3025         } else {
3026             av_packet_unref(pkt);
3027         }
3028     }
3029
3030     ret = 0;
3031  fail:
3032     if (ic && !is->ic)
3033         avformat_close_input(&ic);
3034
3035     if (ret != 0) {
3036         SDL_Event event;
3037
3038         event.type = FF_QUIT_EVENT;
3039         event.user.data1 = is;
3040         SDL_PushEvent(&event);
3041     }
3042     SDL_DestroyMutex(wait_mutex);
3043     return 0;
3044 }
3045
3046 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
3047 {
3048     VideoState *is;
3049
3050     is = av_mallocz(sizeof(VideoState));
3051     if (!is)
3052         return NULL;
3053     is->filename = av_strdup(filename);
3054     if (!is->filename)
3055         goto fail;
3056     is->iformat = iformat;
3057     is->ytop    = 0;
3058     is->xleft   = 0;
3059
3060     /* start video display */
3061     if (frame_queue_init(&is->pictq, &is->videoq, VIDEO_PICTURE_QUEUE_SIZE, 1) < 0)
3062         goto fail;
3063     if (frame_queue_init(&is->subpq, &is->subtitleq, SUBPICTURE_QUEUE_SIZE, 0) < 0)
3064         goto fail;
3065     if (frame_queue_init(&is->sampq, &is->audioq, SAMPLE_QUEUE_SIZE, 1) < 0)
3066         goto fail;
3067
3068     if (packet_queue_init(&is->videoq) < 0 ||
3069         packet_queue_init(&is->audioq) < 0 ||
3070         packet_queue_init(&is->subtitleq) < 0)
3071         goto fail;
3072
3073     if (!(is->continue_read_thread = SDL_CreateCond())) {
3074         av_log(NULL, AV_LOG_FATAL, "SDL_CreateCond(): %s\n", SDL_GetError());
3075         goto fail;
3076     }
3077
3078     init_clock(&is->vidclk, &is->videoq.serial);
3079     init_clock(&is->audclk, &is->audioq.serial);
3080     init_clock(&is->extclk, &is->extclk.serial);
3081     is->audio_clock_serial = -1;
3082     if (startup_volume < 0)
3083         av_log(NULL, AV_LOG_WARNING, "-volume=%d < 0, setting to 0\n", startup_volume);
3084     if (startup_volume > 100)
3085         av_log(NULL, AV_LOG_WARNING, "-volume=%d > 100, setting to 100\n", startup_volume);
3086     startup_volume = av_clip(startup_volume, 0, 100);
3087     startup_volume = av_clip(SDL_MIX_MAXVOLUME * startup_volume / 100, 0, SDL_MIX_MAXVOLUME);
3088     is->audio_volume = startup_volume;
3089     is->muted = 0;
3090     is->av_sync_type = av_sync_type;
3091     is->read_tid     = SDL_CreateThread(read_thread, "read_thread", is);
3092     if (!is->read_tid) {
3093         av_log(NULL, AV_LOG_FATAL, "SDL_CreateThread(): %s\n", SDL_GetError());
3094 fail:
3095         stream_close(is);
3096         return NULL;
3097     }
3098     return is;
3099 }
3100
3101 static void stream_cycle_channel(VideoState *is, int codec_type)
3102 {
3103     AVFormatContext *ic = is->ic;
3104     int start_index, stream_index;
3105     int old_index;
3106     AVStream *st;
3107     AVProgram *p = NULL;
3108     int nb_streams = is->ic->nb_streams;
3109
3110     if (codec_type == AVMEDIA_TYPE_VIDEO) {
3111         start_index = is->last_video_stream;
3112         old_index = is->video_stream;
3113     } else if (codec_type == AVMEDIA_TYPE_AUDIO) {
3114         start_index = is->last_audio_stream;
3115         old_index = is->audio_stream;
3116     } else {
3117         start_index = is->last_subtitle_stream;
3118         old_index = is->subtitle_stream;
3119     }
3120     stream_index = start_index;
3121
3122     if (codec_type != AVMEDIA_TYPE_VIDEO && is->video_stream != -1) {
3123         p = av_find_program_from_stream(ic, NULL, is->video_stream);
3124         if (p) {
3125             nb_streams = p->nb_stream_indexes;
3126             for (start_index = 0; start_index < nb_streams; start_index++)
3127                 if (p->stream_index[start_index] == stream_index)
3128                     break;
3129             if (start_index == nb_streams)
3130                 start_index = -1;
3131             stream_index = start_index;
3132         }
3133     }
3134
3135     for (;;) {
3136         if (++stream_index >= nb_streams)
3137         {
3138             if (codec_type == AVMEDIA_TYPE_SUBTITLE)
3139             {
3140                 stream_index = -1;
3141                 is->last_subtitle_stream = -1;
3142                 goto the_end;
3143             }
3144             if (start_index == -1)
3145                 return;
3146             stream_index = 0;
3147         }
3148         if (stream_index == start_index)
3149             return;
3150         st = is->ic->streams[p ? p->stream_index[stream_index] : stream_index];
3151         if (st->codecpar->codec_type == codec_type) {
3152             /* check that parameters are OK */
3153             switch (codec_type) {
3154             case AVMEDIA_TYPE_AUDIO:
3155                 if (st->codecpar->sample_rate != 0 &&
3156                     st->codecpar->channels != 0)
3157                     goto the_end;
3158                 break;
3159             case AVMEDIA_TYPE_VIDEO:
3160             case AVMEDIA_TYPE_SUBTITLE:
3161                 goto the_end;
3162             default:
3163                 break;
3164             }
3165         }
3166     }
3167  the_end:
3168     if (p && stream_index != -1)
3169         stream_index = p->stream_index[stream_index];
3170     av_log(NULL, AV_LOG_INFO, "Switch %s stream from #%d to #%d\n",
3171            av_get_media_type_string(codec_type),
3172            old_index,
3173            stream_index);
3174
3175     stream_component_close(is, old_index);
3176     stream_component_open(is, stream_index);
3177 }
3178
3179
3180 static void toggle_full_screen(VideoState *is)
3181 {
3182     is_full_screen = !is_full_screen;
3183     SDL_SetWindowFullscreen(window, is_full_screen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
3184 }
3185
3186 static void toggle_audio_display(VideoState *is)
3187 {
3188     int next = is->show_mode;
3189     do {
3190         next = (next + 1) % SHOW_MODE_NB;
3191     } while (next != is->show_mode && (next == SHOW_MODE_VIDEO && !is->video_st || next != SHOW_MODE_VIDEO && !is->audio_st));
3192     if (is->show_mode != next) {
3193         is->force_refresh = 1;
3194         is->show_mode = next;
3195     }
3196 }
3197
3198 static void refresh_loop_wait_event(VideoState *is, SDL_Event *event) {
3199     double remaining_time = 0.0;
3200     SDL_PumpEvents();
3201     while (!SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_FIRSTEVENT, SDL_LASTEVENT)) {
3202         if (!cursor_hidden && av_gettime_relative() - cursor_last_shown > CURSOR_HIDE_DELAY) {
3203             SDL_ShowCursor(0);
3204             cursor_hidden = 1;
3205         }
3206         if (remaining_time > 0.0)
3207             av_usleep((int64_t)(remaining_time * 1000000.0));
3208         remaining_time = REFRESH_RATE;
3209         if (is->show_mode != SHOW_MODE_NONE && (!is->paused || is->force_refresh))
3210             video_refresh(is, &remaining_time);
3211         SDL_PumpEvents();
3212     }
3213 }
3214
3215 static void seek_chapter(VideoState *is, int incr)
3216 {
3217     int64_t pos = get_master_clock(is) * AV_TIME_BASE;
3218     int i;
3219
3220     if (!is->ic->nb_chapters)
3221         return;
3222
3223     /* find the current chapter */
3224     for (i = 0; i < is->ic->nb_chapters; i++) {
3225         AVChapter *ch = is->ic->chapters[i];
3226         if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
3227             i--;
3228             break;
3229         }
3230     }
3231
3232     i += incr;
3233     i = FFMAX(i, 0);
3234     if (i >= is->ic->nb_chapters)
3235         return;
3236
3237     av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
3238     stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
3239                                  AV_TIME_BASE_Q), 0, 0);
3240 }
3241
3242 /* handle an event sent by the GUI */
3243 static void event_loop(VideoState *cur_stream)
3244 {
3245     SDL_Event event;
3246     double incr, pos, frac;
3247
3248     for (;;) {
3249         double x;
3250         refresh_loop_wait_event(cur_stream, &event);
3251         switch (event.type) {
3252         case SDL_KEYDOWN:
3253             if (exit_on_keydown) {
3254                 do_exit(cur_stream);
3255                 break;
3256             }
3257             switch (event.key.keysym.sym) {
3258             case SDLK_ESCAPE:
3259             case SDLK_q:
3260                 do_exit(cur_stream);
3261                 break;
3262             case SDLK_f:
3263                 toggle_full_screen(cur_stream);
3264                 cur_stream->force_refresh = 1;
3265                 break;
3266             case SDLK_p:
3267             case SDLK_SPACE:
3268                 toggle_pause(cur_stream);
3269                 break;
3270             case SDLK_m:
3271                 toggle_mute(cur_stream);
3272                 break;
3273             case SDLK_KP_MULTIPLY:
3274             case SDLK_0:
3275                 update_volume(cur_stream, 1, SDL_VOLUME_STEP);
3276                 break;
3277             case SDLK_KP_DIVIDE:
3278             case SDLK_9:
3279                 update_volume(cur_stream, -1, SDL_VOLUME_STEP);
3280                 break;
3281             case SDLK_s: // S: Step to next frame
3282                 step_to_next_frame(cur_stream);
3283                 break;
3284             case SDLK_a:
3285                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3286                 break;
3287             case SDLK_v:
3288                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3289                 break;
3290             case SDLK_c:
3291                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
3292                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
3293                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3294                 break;
3295             case SDLK_t:
3296                 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
3297                 break;
3298             case SDLK_w:
3299 #if CONFIG_AVFILTER
3300                 if (cur_stream->show_mode == SHOW_MODE_VIDEO && cur_stream->vfilter_idx < nb_vfilters - 1) {
3301                     if (++cur_stream->vfilter_idx >= nb_vfilters)
3302                         cur_stream->vfilter_idx = 0;
3303                 } else {
3304                     cur_stream->vfilter_idx = 0;
3305                     toggle_audio_display(cur_stream);
3306                 }
3307 #else
3308                 toggle_audio_display(cur_stream);
3309 #endif
3310                 break;
3311             case SDLK_PAGEUP:
3312                 if (cur_stream->ic->nb_chapters <= 1) {
3313                     incr = 600.0;
3314                     goto do_seek;
3315                 }
3316                 seek_chapter(cur_stream, 1);
3317                 break;
3318             case SDLK_PAGEDOWN:
3319                 if (cur_stream->ic->nb_chapters <= 1) {
3320                     incr = -600.0;
3321                     goto do_seek;
3322                 }
3323                 seek_chapter(cur_stream, -1);
3324                 break;
3325             case SDLK_LEFT:
3326                 incr = -10.0;
3327                 goto do_seek;
3328             case SDLK_RIGHT:
3329                 incr = 10.0;
3330                 goto do_seek;
3331             case SDLK_UP:
3332                 incr = 60.0;
3333                 goto do_seek;
3334             case SDLK_DOWN:
3335                 incr = -60.0;
3336             do_seek:
3337                     if (seek_by_bytes) {
3338                         pos = -1;
3339                         if (pos < 0 && cur_stream->video_stream >= 0)
3340                             pos = frame_queue_last_pos(&cur_stream->pictq);
3341                         if (pos < 0 && cur_stream->audio_stream >= 0)
3342                             pos = frame_queue_last_pos(&cur_stream->sampq);
3343                         if (pos < 0)
3344                             pos = avio_tell(cur_stream->ic->pb);
3345                         if (cur_stream->ic->bit_rate)
3346                             incr *= cur_stream->ic->bit_rate / 8.0;
3347                         else
3348                             incr *= 180000.0;
3349                         pos += incr;
3350                         stream_seek(cur_stream, pos, incr, 1);
3351                     } else {
3352                         pos = get_master_clock(cur_stream);
3353                         if (isnan(pos))
3354                             pos = (double)cur_stream->seek_pos / AV_TIME_BASE;
3355                         pos += incr;
3356                         if (cur_stream->ic->start_time != AV_NOPTS_VALUE && pos < cur_stream->ic->start_time / (double)AV_TIME_BASE)
3357                             pos = cur_stream->ic->start_time / (double)AV_TIME_BASE;
3358                         stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
3359                     }
3360                 break;
3361             default:
3362                 break;
3363             }
3364             break;
3365         case SDL_MOUSEBUTTONDOWN:
3366             if (exit_on_mousedown) {
3367                 do_exit(cur_stream);
3368                 break;
3369             }
3370             if (event.button.button == SDL_BUTTON_LEFT) {
3371                 static int64_t last_mouse_left_click = 0;
3372                 if (av_gettime_relative() - last_mouse_left_click <= 500000) {
3373                     toggle_full_screen(cur_stream);
3374                     cur_stream->force_refresh = 1;
3375                     last_mouse_left_click = 0;
3376                 } else {
3377                     last_mouse_left_click = av_gettime_relative();
3378                 }
3379             }
3380         case SDL_MOUSEMOTION:
3381             if (cursor_hidden) {
3382                 SDL_ShowCursor(1);
3383                 cursor_hidden = 0;
3384             }
3385             cursor_last_shown = av_gettime_relative();
3386             if (event.type == SDL_MOUSEBUTTONDOWN) {
3387                 if (event.button.button != SDL_BUTTON_RIGHT)
3388                     break;
3389                 x = event.button.x;
3390             } else {
3391                 if (!(event.motion.state & SDL_BUTTON_RMASK))
3392                     break;
3393                 x = event.motion.x;
3394             }
3395                 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
3396                     uint64_t size =  avio_size(cur_stream->ic->pb);
3397                     stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
3398                 } else {
3399                     int64_t ts;
3400                     int ns, hh, mm, ss;
3401                     int tns, thh, tmm, tss;
3402                     tns  = cur_stream->ic->duration / 1000000LL;
3403                     thh  = tns / 3600;
3404                     tmm  = (tns % 3600) / 60;
3405                     tss  = (tns % 60);
3406                     frac = x / cur_stream->width;
3407                     ns   = frac * tns;
3408                     hh   = ns / 3600;
3409                     mm   = (ns % 3600) / 60;
3410                     ss   = (ns % 60);
3411                     av_log(NULL, AV_LOG_INFO,
3412                            "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d)       \n", frac*100,
3413                             hh, mm, ss, thh, tmm, tss);
3414                     ts = frac * cur_stream->ic->duration;
3415                     if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
3416                         ts += cur_stream->ic->start_time;
3417                     stream_seek(cur_stream, ts, 0, 0);
3418                 }
3419             break;
3420         case SDL_WINDOWEVENT:
3421             switch (event.window.event) {
3422                 case SDL_WINDOWEVENT_RESIZED:
3423                     screen_width  = cur_stream->width  = event.window.data1;
3424                     screen_height = cur_stream->height = event.window.data2;
3425                     if (cur_stream->vis_texture) {
3426                         SDL_DestroyTexture(cur_stream->vis_texture);
3427                         cur_stream->vis_texture = NULL;
3428                     }
3429                 case SDL_WINDOWEVENT_EXPOSED:
3430                     cur_stream->force_refresh = 1;
3431             }
3432             break;
3433         case SDL_QUIT:
3434         case FF_QUIT_EVENT:
3435             do_exit(cur_stream);
3436             break;
3437         default:
3438             break;
3439         }
3440     }
3441 }
3442
3443 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
3444 {
3445     av_log(NULL, AV_LOG_WARNING, "Option -s is deprecated, use -video_size.\n");
3446     return opt_default(NULL, "video_size", arg);
3447 }
3448
3449 static int opt_width(void *optctx, const char *opt, const char *arg)
3450 {
3451     screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3452     return 0;
3453 }
3454
3455 static int opt_height(void *optctx, const char *opt, const char *arg)
3456 {
3457     screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
3458     return 0;
3459 }
3460
3461 static int opt_format(void *optctx, const char *opt, const char *arg)
3462 {
3463     file_iformat = av_find_input_format(arg);
3464     if (!file_iformat) {
3465         av_log(NULL, AV_LOG_FATAL, "Unknown input format: %s\n", arg);
3466         return AVERROR(EINVAL);
3467     }
3468     return 0;
3469 }
3470
3471 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
3472 {
3473     av_log(NULL, AV_LOG_WARNING, "Option -pix_fmt is deprecated, use -pixel_format.\n");
3474     return opt_default(NULL, "pixel_format", arg);
3475 }
3476
3477 static int opt_sync(void *optctx, const char *opt, const char *arg)
3478 {
3479     if (!strcmp(arg, "audio"))
3480         av_sync_type = AV_SYNC_AUDIO_MASTER;
3481     else if (!strcmp(arg, "video"))
3482         av_sync_type = AV_SYNC_VIDEO_MASTER;
3483     else if (!strcmp(arg, "ext"))
3484         av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
3485     else {
3486         av_log(NULL, AV_LOG_ERROR, "Unknown value for %s: %s\n", opt, arg);
3487         exit(1);
3488     }
3489     return 0;
3490 }
3491
3492 static int opt_seek(void *optctx, const char *opt, const char *arg)
3493 {
3494     start_time = parse_time_or_die(opt, arg, 1);
3495     return 0;
3496 }
3497
3498 static int opt_duration(void *optctx, const char *opt, const char *arg)
3499 {
3500     duration = parse_time_or_die(opt, arg, 1);
3501     return 0;
3502 }
3503
3504 static int opt_show_mode(void *optctx, const char *opt, const char *arg)
3505 {
3506     show_mode = !strcmp(arg, "video") ? SHOW_MODE_VIDEO :
3507                 !strcmp(arg, "waves") ? SHOW_MODE_WAVES :
3508                 !strcmp(arg, "rdft" ) ? SHOW_MODE_RDFT  :
3509                 parse_number_or_die(opt, arg, OPT_INT, 0, SHOW_MODE_NB-1);
3510     return 0;
3511 }
3512
3513 static void opt_input_file(void *optctx, const char *filename)
3514 {
3515     if (input_filename) {
3516         av_log(NULL, AV_LOG_FATAL,
3517                "Argument '%s' provided as input filename, but '%s' was already specified.\n",
3518                 filename, input_filename);
3519         exit(1);
3520     }
3521     if (!strcmp(filename, "-"))
3522         filename = "pipe:";
3523     input_filename = filename;
3524 }
3525
3526 static int opt_codec(void *optctx, const char *opt, const char *arg)
3527 {
3528    const char *spec = strchr(opt, ':');
3529    if (!spec) {
3530        av_log(NULL, AV_LOG_ERROR,
3531               "No media specifier was specified in '%s' in option '%s'\n",
3532                arg, opt);
3533        return AVERROR(EINVAL);
3534    }
3535    spec++;
3536    switch (spec[0]) {
3537    case 'a' :    audio_codec_name = arg; break;
3538    case 's' : subtitle_codec_name = arg; break;
3539    case 'v' :    video_codec_name = arg; break;
3540    default:
3541        av_log(NULL, AV_LOG_ERROR,
3542               "Invalid media specifier '%s' in option '%s'\n", spec, opt);
3543        return AVERROR(EINVAL);
3544    }
3545    return 0;
3546 }
3547
3548 static int dummy;
3549
3550 static const OptionDef options[] = {
3551     CMDUTILS_COMMON_OPTIONS
3552     { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
3553     { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
3554     { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
3555     { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
3556     { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
3557     { "vn", OPT_BOOL, { &video_disable }, "disable video" },
3558     { "sn", OPT_BOOL, { &subtitle_disable }, "disable subtitling" },
3559     { "ast", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_specifier" },
3560     { "vst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_specifier" },
3561     { "sst", OPT_STRING | HAS_ARG | OPT_EXPERT, { &wanted_stream_spec[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_specifier" },
3562     { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
3563     { "t", HAS_ARG, { .func_arg = opt_duration }, "play  \"duration\" seconds of audio/video", "duration" },
3564     { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
3565     { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
3566     { "noborder", OPT_BOOL, { &borderless }, "borderless window" },
3567     { "volume", OPT_INT | HAS_ARG, { &startup_volume}, "set startup volume 0=min 100=max", "volume" },
3568     { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
3569     { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
3570     { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
3571     { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
3572     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
3573     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
3574     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
3575     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
3576     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
3577     { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
3578     { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
3579     { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
3580     { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
3581     { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
3582     { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
3583 #if CONFIG_AVFILTER
3584     { "vf", OPT_EXPERT | HAS_ARG, { .func_arg = opt_add_vfilter }, "set video filters", "filter_graph" },
3585     { "af", OPT_STRING | HAS_ARG, { &afilters }, "set audio filters", "filter_graph" },
3586 #endif
3587     { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
3588     { "showmode", HAS_ARG, { .func_arg = opt_show_mode}, "select show mode (0 = video, 1 = waves, 2 = RDFT)", "mode" },
3589     { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { .func_arg = opt_default }, "generic catch all option", "" },
3590     { "i", OPT_BOOL, { &dummy}, "read specified file", "input_file"},
3591     { "codec", HAS_ARG, { .func_arg = opt_codec}, "force decoder", "decoder_name" },
3592     { "acodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &audio_codec_name }, "force audio decoder",    "decoder_name" },
3593     { "scodec", HAS_ARG | OPT_STRING | OPT_EXPERT, { &subtitle_codec_name }, "force subtitle decoder", "decoder_name" },
3594     { "vcodec", HAS_ARG | OPT_STRING | OPT_EXPERT, {    &video_codec_name }, "force video decoder",    "decoder_name" },
3595     { "autorotate", OPT_BOOL, { &autorotate }, "automatically rotate video", "" },
3596     { "find_stream_info", OPT_BOOL | OPT_INPUT | OPT_EXPERT, { &find_stream_info },
3597         "read and decode the streams to fill missing information with heuristics" },
3598     { NULL, },
3599 };
3600