2 * avplay : Simple Media Player based on the Libav libraries
3 * Copyright (c) 2003 Fabrice Bellard
5 * This file is part of Libav.
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #include "libavutil/avstring.h"
29 #include "libavutil/colorspace.h"
30 #include "libavutil/display.h"
31 #include "libavutil/mathematics.h"
32 #include "libavutil/pixdesc.h"
33 #include "libavutil/imgutils.h"
34 #include "libavutil/dict.h"
35 #include "libavutil/parseutils.h"
36 #include "libavutil/samplefmt.h"
37 #include "libavutil/time.h"
38 #include "libavformat/avformat.h"
39 #include "libavdevice/avdevice.h"
40 #include "libswscale/swscale.h"
41 #include "libavresample/avresample.h"
42 #include "libavutil/opt.h"
43 #include "libavcodec/avfft.h"
46 # include "libavfilter/avfilter.h"
47 # include "libavfilter/buffersink.h"
48 # include "libavfilter/buffersrc.h"
54 #include <SDL_thread.h>
57 #undef main /* We don't want SDL to override our main() */
62 const char program_name[] = "avplay";
63 const int program_birth_year = 2003;
65 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
66 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
69 /* SDL audio buffer size, in samples. Should be small to have precise
70 A/V sync as SDL does not have hardware buffer fullness info. */
71 #define SDL_AUDIO_BUFFER_SIZE 1024
73 /* no AV sync correction is done if below the AV sync threshold */
74 #define AV_SYNC_THRESHOLD 0.01
75 /* no AV correction is done if too big error */
76 #define AV_NOSYNC_THRESHOLD 10.0
78 #define FRAME_SKIP_FACTOR 0.05
80 /* maximum audio speed change to get correct sync */
81 #define SAMPLE_CORRECTION_PERCENT_MAX 10
83 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
84 #define AUDIO_DIFF_AVG_NB 20
86 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
87 #define SAMPLE_ARRAY_SIZE (2 * 65536)
89 static int64_t sws_flags = SWS_BICUBIC;
91 typedef struct PacketQueue {
92 AVPacketList *first_pkt, *last_pkt;
100 #define VIDEO_PICTURE_QUEUE_SIZE 2
101 #define SUBPICTURE_QUEUE_SIZE 4
103 typedef struct VideoPicture {
104 double pts; // presentation timestamp for this picture
105 double target_clock; // av_gettime_relative() time at which this should be displayed ideally
106 int64_t pos; // byte position in file
108 int width, height; /* source height & width */
111 enum AVPixelFormat pix_fmt;
116 typedef struct SubPicture {
117 double pts; /* presentation time stamp for this picture */
122 AV_SYNC_AUDIO_MASTER, /* default choice */
123 AV_SYNC_VIDEO_MASTER,
124 AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
127 typedef struct VideoState {
128 SDL_Thread *parse_tid;
129 SDL_Thread *video_tid;
130 SDL_Thread *refresh_tid;
131 AVInputFormat *iformat;
140 int read_pause_return;
146 double external_clock; /* external clock base */
147 int64_t external_clock_time;
150 double audio_diff_cum; /* used for AV difference average computation */
151 double audio_diff_avg_coef;
152 double audio_diff_threshold;
153 int audio_diff_avg_count;
156 int audio_hw_buf_size;
157 uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
160 unsigned int audio_buf_size; /* in bytes */
161 int audio_buf_index; /* in bytes */
162 AVPacket audio_pkt_temp;
164 enum AVSampleFormat sdl_sample_fmt;
165 uint64_t sdl_channel_layout;
168 enum AVSampleFormat resample_sample_fmt;
169 uint64_t resample_channel_layout;
170 int resample_sample_rate;
171 AVAudioResampleContext *avr;
174 int show_audio; /* if true, display audio samples */
175 int16_t sample_array[SAMPLE_ARRAY_SIZE];
176 int sample_array_index;
180 FFTSample *rdft_data;
183 SDL_Thread *subtitle_tid;
185 int subtitle_stream_changed;
186 AVStream *subtitle_st;
187 PacketQueue subtitleq;
188 SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
189 int subpq_size, subpq_rindex, subpq_windex;
190 SDL_mutex *subpq_mutex;
191 SDL_cond *subpq_cond;
194 double frame_last_pts;
195 double frame_last_delay;
196 double video_clock; // pts of last decoded frame / predicted pts of next decoded frame
200 double video_current_pts; // current displayed pts (different from video_clock if frame fifos are used)
201 double video_current_pts_drift; // video_current_pts - time (av_gettime_relative) at which we updated video_current_pts - used to have running video pts
202 int64_t video_current_pos; // current displayed file pos
203 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
204 int pictq_size, pictq_rindex, pictq_windex;
205 SDL_mutex *pictq_mutex;
206 SDL_cond *pictq_cond;
208 struct SwsContext *img_convert_ctx;
211 // QETimer *video_timer;
213 int width, height, xleft, ytop;
215 PtsCorrectionContext pts_ctx;
218 AVFilterContext *in_video_filter; // the first filter in the video chain
219 AVFilterContext *out_video_filter; // the last filter in the video chain
223 float skip_frames_index;
227 /* options specified by the user */
228 static AVInputFormat *file_iformat;
229 static const char *input_filename;
230 static const char *window_title;
231 static int fs_screen_width;
232 static int fs_screen_height;
233 static int screen_width = 0;
234 static int screen_height = 0;
235 static int audio_disable;
236 static int video_disable;
237 static int wanted_stream[AVMEDIA_TYPE_NB] = {
238 [AVMEDIA_TYPE_AUDIO] = -1,
239 [AVMEDIA_TYPE_VIDEO] = -1,
240 [AVMEDIA_TYPE_SUBTITLE] = -1,
242 static int seek_by_bytes = -1;
243 static int display_disable;
244 static int show_status = 1;
245 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
246 static int64_t start_time = AV_NOPTS_VALUE;
247 static int64_t duration = AV_NOPTS_VALUE;
249 static int workaround_bugs = 1;
251 static int genpts = 0;
252 static int idct = FF_IDCT_AUTO;
253 static enum AVDiscard skip_frame = AVDISCARD_DEFAULT;
254 static enum AVDiscard skip_idct = AVDISCARD_DEFAULT;
255 static enum AVDiscard skip_loop_filter = AVDISCARD_DEFAULT;
256 static int error_concealment = 3;
257 static int decoder_reorder_pts = -1;
258 static int noautoexit;
259 static int exit_on_keydown;
260 static int exit_on_mousedown;
262 static int framedrop = 1;
263 static int infinite_buffer = 0;
265 static int rdftspeed = 20;
267 static char *vfilters = NULL;
269 static int autorotate = 1;
271 /* current context */
272 static int is_full_screen;
273 static VideoState *cur_stream;
274 static int64_t audio_callback_time;
276 static AVPacket flush_pkt;
278 #define FF_ALLOC_EVENT (SDL_USEREVENT)
279 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
280 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
282 static SDL_Surface *screen;
284 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
286 /* packet queue handling */
287 static void packet_queue_init(PacketQueue *q)
289 memset(q, 0, sizeof(PacketQueue));
290 q->mutex = SDL_CreateMutex();
291 q->cond = SDL_CreateCond();
292 packet_queue_put(q, &flush_pkt);
295 static void packet_queue_flush(PacketQueue *q)
297 AVPacketList *pkt, *pkt1;
299 SDL_LockMutex(q->mutex);
300 for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
302 av_free_packet(&pkt->pkt);
309 SDL_UnlockMutex(q->mutex);
312 static void packet_queue_end(PacketQueue *q)
314 packet_queue_flush(q);
315 SDL_DestroyMutex(q->mutex);
316 SDL_DestroyCond(q->cond);
319 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
323 /* duplicate the packet */
324 if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
327 pkt1 = av_malloc(sizeof(AVPacketList));
334 SDL_LockMutex(q->mutex);
340 q->last_pkt->next = pkt1;
343 q->size += pkt1->pkt.size + sizeof(*pkt1);
344 /* XXX: should duplicate packet data in DV case */
345 SDL_CondSignal(q->cond);
347 SDL_UnlockMutex(q->mutex);
351 static void packet_queue_abort(PacketQueue *q)
353 SDL_LockMutex(q->mutex);
355 q->abort_request = 1;
357 SDL_CondSignal(q->cond);
359 SDL_UnlockMutex(q->mutex);
362 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
363 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
368 SDL_LockMutex(q->mutex);
371 if (q->abort_request) {
378 q->first_pkt = pkt1->next;
382 q->size -= pkt1->pkt.size + sizeof(*pkt1);
391 SDL_CondWait(q->cond, q->mutex);
394 SDL_UnlockMutex(q->mutex);
398 static inline void fill_rectangle(SDL_Surface *screen,
399 int x, int y, int w, int h, int color)
406 SDL_FillRect(screen, &rect, color);
409 #define ALPHA_BLEND(a, oldp, newp, s)\
410 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
412 #define RGBA_IN(r, g, b, a, s)\
414 unsigned int v = ((const uint32_t *)(s))[0];\
415 a = (v >> 24) & 0xff;\
416 r = (v >> 16) & 0xff;\
417 g = (v >> 8) & 0xff;\
421 #define YUVA_IN(y, u, v, a, s, pal)\
423 unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
424 a = (val >> 24) & 0xff;\
425 y = (val >> 16) & 0xff;\
426 u = (val >> 8) & 0xff;\
430 #define YUVA_OUT(d, y, u, v, a)\
432 ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
438 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
440 int wrap, wrap3, width2, skip2;
441 int y, u, v, a, u1, v1, a1, w, h;
442 uint8_t *lum, *cb, *cr;
445 int dstx, dsty, dstw, dsth;
447 dstw = av_clip(rect->w, 0, imgw);
448 dsth = av_clip(rect->h, 0, imgh);
449 dstx = av_clip(rect->x, 0, imgw - dstw);
450 dsty = av_clip(rect->y, 0, imgh - dsth);
451 lum = dst->data[0] + dsty * dst->linesize[0];
452 cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
453 cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
455 width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
457 wrap = dst->linesize[0];
458 wrap3 = rect->pict.linesize[0];
459 p = rect->pict.data[0];
460 pal = (const uint32_t *)rect->pict.data[1]; /* Now in YCrCb! */
468 YUVA_IN(y, u, v, a, p, pal);
469 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
470 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
471 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
477 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
478 YUVA_IN(y, u, v, a, p, pal);
482 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
484 YUVA_IN(y, u, v, a, p + BPP, pal);
488 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
489 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
490 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
497 YUVA_IN(y, u, v, a, p, pal);
498 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
499 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
500 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
504 p += wrap3 - dstw * BPP;
505 lum += wrap - dstw - dstx;
506 cb += dst->linesize[1] - width2 - skip2;
507 cr += dst->linesize[2] - width2 - skip2;
509 for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
515 YUVA_IN(y, u, v, a, p, pal);
519 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
522 YUVA_IN(y, u, v, a, p, pal);
526 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
527 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
528 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
534 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
535 YUVA_IN(y, u, v, a, p, pal);
539 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
541 YUVA_IN(y, u, v, a, p + BPP, pal);
545 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
549 YUVA_IN(y, u, v, a, p, pal);
553 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
555 YUVA_IN(y, u, v, a, p + BPP, pal);
559 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
561 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
562 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
566 p += -wrap3 + 2 * BPP;
570 YUVA_IN(y, u, v, a, p, pal);
574 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
577 YUVA_IN(y, u, v, a, p, pal);
581 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
582 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
583 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
589 p += wrap3 + (wrap3 - dstw * BPP);
590 lum += wrap + (wrap - dstw - dstx);
591 cb += dst->linesize[1] - width2 - skip2;
592 cr += dst->linesize[2] - width2 - skip2;
594 /* handle odd height */
601 YUVA_IN(y, u, v, a, p, pal);
602 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
603 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
604 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
610 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
611 YUVA_IN(y, u, v, a, p, pal);
615 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
617 YUVA_IN(y, u, v, a, p + BPP, pal);
621 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
622 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
623 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
630 YUVA_IN(y, u, v, a, p, pal);
631 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
632 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
633 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
638 static void free_subpicture(SubPicture *sp)
640 avsubtitle_free(&sp->sub);
643 static void video_image_display(VideoState *is)
649 int width, height, x, y;
653 vp = &is->pictq[is->pictq_rindex];
659 aspect_ratio = av_q2d(vp->sar);
662 /* XXX: use variable in the frame */
663 if (is->video_st->sample_aspect_ratio.num)
664 aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
665 else if (is->video_st->codec->sample_aspect_ratio.num)
666 aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
670 if (aspect_ratio <= 0.0)
672 aspect_ratio *= (float)vp->width / (float)vp->height;
676 if (is->subpq_size > 0)
678 sp = &is->subpq[is->subpq_rindex];
680 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
682 SDL_LockYUVOverlay (vp->bmp);
684 pict.data[0] = vp->bmp->pixels[0];
685 pict.data[1] = vp->bmp->pixels[2];
686 pict.data[2] = vp->bmp->pixels[1];
688 pict.linesize[0] = vp->bmp->pitches[0];
689 pict.linesize[1] = vp->bmp->pitches[2];
690 pict.linesize[2] = vp->bmp->pitches[1];
692 for (i = 0; i < sp->sub.num_rects; i++)
693 blend_subrect(&pict, sp->sub.rects[i],
694 vp->bmp->w, vp->bmp->h);
696 SDL_UnlockYUVOverlay (vp->bmp);
702 /* XXX: we suppose the screen has a 1.0 pixel ratio */
704 width = ((int)rint(height * aspect_ratio)) & ~1;
705 if (width > is->width) {
707 height = ((int)rint(width / aspect_ratio)) & ~1;
709 x = (is->width - width) / 2;
710 y = (is->height - height) / 2;
711 is->no_background = 0;
712 rect.x = is->xleft + x;
713 rect.y = is->ytop + y;
716 SDL_DisplayYUVOverlay(vp->bmp, &rect);
720 /* get the current audio output buffer size, in samples. With SDL, we
721 cannot have a precise information */
722 static int audio_write_get_buf_size(VideoState *is)
724 return is->audio_buf_size - is->audio_buf_index;
727 static inline int compute_mod(int a, int b)
736 static void video_audio_display(VideoState *s)
738 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
739 int ch, channels, h, h2, bgcolor, fgcolor;
741 int rdft_bits, nb_freq;
743 for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
745 nb_freq = 1 << (rdft_bits - 1);
747 /* compute display index : center on currently output samples */
748 channels = s->sdl_channels;
749 nb_display_channels = channels;
751 int data_used = s->show_audio == 1 ? s->width : (2 * nb_freq);
753 delay = audio_write_get_buf_size(s);
756 /* to be more precise, we take into account the time spent since
757 the last buffer computation */
758 if (audio_callback_time) {
759 time_diff = av_gettime_relative() - audio_callback_time;
760 delay -= (time_diff * s->sdl_sample_rate) / 1000000;
763 delay += 2 * data_used;
764 if (delay < data_used)
767 i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
768 if (s->show_audio == 1) {
770 for (i = 0; i < 1000; i += channels) {
771 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
772 int a = s->sample_array[idx];
773 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
774 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
775 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
777 if (h < score && (b ^ c) < 0) {
784 s->last_i_start = i_start;
786 i_start = s->last_i_start;
789 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
790 if (s->show_audio == 1) {
791 fill_rectangle(screen,
792 s->xleft, s->ytop, s->width, s->height,
795 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
797 /* total height for one channel */
798 h = s->height / nb_display_channels;
799 /* graph height / 2 */
801 for (ch = 0; ch < nb_display_channels; ch++) {
803 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
804 for (x = 0; x < s->width; x++) {
805 y = (s->sample_array[i] * h2) >> 15;
812 fill_rectangle(screen,
813 s->xleft + x, ys, 1, y,
816 if (i >= SAMPLE_ARRAY_SIZE)
817 i -= SAMPLE_ARRAY_SIZE;
821 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
823 for (ch = 1; ch < nb_display_channels; ch++) {
824 y = s->ytop + ch * h;
825 fill_rectangle(screen,
826 s->xleft, y, s->width, 1,
829 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
831 nb_display_channels= FFMIN(nb_display_channels, 2);
832 if (rdft_bits != s->rdft_bits) {
833 av_rdft_end(s->rdft);
834 av_free(s->rdft_data);
835 s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
836 s->rdft_bits = rdft_bits;
837 s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
841 for (ch = 0; ch < nb_display_channels; ch++) {
842 data[ch] = s->rdft_data + 2 * nb_freq * ch;
844 for (x = 0; x < 2 * nb_freq; x++) {
845 double w = (x-nb_freq) * (1.0 / nb_freq);
846 data[ch][x] = s->sample_array[i] * (1.0 - w * w);
848 if (i >= SAMPLE_ARRAY_SIZE)
849 i -= SAMPLE_ARRAY_SIZE;
851 av_rdft_calc(s->rdft, data[ch]);
853 /* Least efficient way to do this, we should of course
854 * directly access it but it is more than fast enough. */
855 for (y = 0; y < s->height; y++) {
856 double w = 1 / sqrt(nb_freq);
857 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]));
858 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
859 + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
862 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
864 fill_rectangle(screen,
865 s->xpos, s->height-y, 1, 1,
869 SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
871 if (s->xpos >= s->width)
876 static int video_open(VideoState *is)
878 int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
881 if (is_full_screen) flags |= SDL_FULLSCREEN;
882 else flags |= SDL_RESIZABLE;
884 if (is_full_screen && fs_screen_width) {
886 h = fs_screen_height;
887 } else if (!is_full_screen && screen_width) {
891 } else if (is->out_video_filter && is->out_video_filter->inputs[0]) {
892 w = is->out_video_filter->inputs[0]->w;
893 h = is->out_video_filter->inputs[0]->h;
895 } else if (is->video_st && is->video_st->codec->width) {
896 w = is->video_st->codec->width;
897 h = is->video_st->codec->height;
903 if (screen && is->width == screen->w && screen->w == w
904 && is->height== screen->h && screen->h == h)
907 #if defined(__APPLE__) && !SDL_VERSION_ATLEAST(1, 2, 14)
908 /* setting bits_per_pixel = 0 or 32 causes blank video on OS X and older SDL */
909 screen = SDL_SetVideoMode(w, h, 24, flags);
911 screen = SDL_SetVideoMode(w, h, 0, flags);
914 fprintf(stderr, "SDL: could not set video mode - exiting\n");
918 window_title = input_filename;
919 SDL_WM_SetCaption(window_title, window_title);
921 is->width = screen->w;
922 is->height = screen->h;
927 /* display the current picture, if any */
928 static void video_display(VideoState *is)
931 video_open(cur_stream);
932 if (is->audio_st && is->show_audio)
933 video_audio_display(is);
934 else if (is->video_st)
935 video_image_display(is);
938 static int refresh_thread(void *opaque)
940 VideoState *is= opaque;
941 while (!is->abort_request) {
943 event.type = FF_REFRESH_EVENT;
944 event.user.data1 = opaque;
947 SDL_PushEvent(&event);
949 av_usleep(is->audio_st && is->show_audio ? rdftspeed * 1000 : 5000); // FIXME ideally we should wait the correct time but SDLs event passing is so slow it would be silly
954 /* get the current audio clock value */
955 static double get_audio_clock(VideoState *is)
958 int hw_buf_size, bytes_per_sec;
959 pts = is->audio_clock;
960 hw_buf_size = audio_write_get_buf_size(is);
963 bytes_per_sec = is->sdl_sample_rate * is->sdl_channels *
964 av_get_bytes_per_sample(is->sdl_sample_fmt);
967 pts -= (double)hw_buf_size / bytes_per_sec;
971 /* get the current video clock value */
972 static double get_video_clock(VideoState *is)
975 return is->video_current_pts;
977 return is->video_current_pts_drift + av_gettime_relative() / 1000000.0;
981 /* get the current external clock value */
982 static double get_external_clock(VideoState *is)
985 ti = av_gettime_relative();
986 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
989 /* get the current master clock value */
990 static double get_master_clock(VideoState *is)
994 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
996 val = get_video_clock(is);
998 val = get_audio_clock(is);
999 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
1001 val = get_audio_clock(is);
1003 val = get_video_clock(is);
1005 val = get_external_clock(is);
1010 /* seek in the stream */
1011 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1013 if (!is->seek_req) {
1016 is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1018 is->seek_flags |= AVSEEK_FLAG_BYTE;
1023 /* pause or resume the video */
1024 static void stream_pause(VideoState *is)
1027 is->frame_timer += av_gettime_relative() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1028 if (is->read_pause_return != AVERROR(ENOSYS)) {
1029 is->video_current_pts = is->video_current_pts_drift + av_gettime_relative() / 1000000.0;
1031 is->video_current_pts_drift = is->video_current_pts - av_gettime_relative() / 1000000.0;
1033 is->paused = !is->paused;
1036 static double compute_target_time(double frame_current_pts, VideoState *is)
1038 double delay, sync_threshold, diff = 0;
1040 /* compute nominal delay */
1041 delay = frame_current_pts - is->frame_last_pts;
1042 if (delay <= 0 || delay >= 10.0) {
1043 /* if incorrect delay, use previous one */
1044 delay = is->frame_last_delay;
1046 is->frame_last_delay = delay;
1048 is->frame_last_pts = frame_current_pts;
1050 /* update delay to follow master synchronisation source */
1051 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1052 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1053 /* if video is slave, we try to correct big delays by
1054 duplicating or deleting a frame */
1055 diff = get_video_clock(is) - get_master_clock(is);
1057 /* skip or repeat frame. We take into account the
1058 delay to compute the threshold. I still don't know
1059 if it is the best guess */
1060 sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1061 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1062 if (diff <= -sync_threshold)
1064 else if (diff >= sync_threshold)
1068 is->frame_timer += delay;
1070 av_log(NULL, AV_LOG_TRACE, "video: delay=%0.3f pts=%0.3f A-V=%f\n",
1071 delay, frame_current_pts, -diff);
1073 return is->frame_timer;
1076 /* called to display each frame */
1077 static void video_refresh_timer(void *opaque)
1079 VideoState *is = opaque;
1082 SubPicture *sp, *sp2;
1086 if (is->pictq_size == 0) {
1087 // nothing to do, no picture to display in the que
1089 double time = av_gettime_relative() / 1000000.0;
1091 /* dequeue the picture */
1092 vp = &is->pictq[is->pictq_rindex];
1094 if (time < vp->target_clock)
1096 /* update current video pts */
1097 is->video_current_pts = vp->pts;
1098 is->video_current_pts_drift = is->video_current_pts - time;
1099 is->video_current_pos = vp->pos;
1100 if (is->pictq_size > 1) {
1101 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1102 assert(nextvp->target_clock >= vp->target_clock);
1103 next_target= nextvp->target_clock;
1105 next_target = vp->target_clock + is->video_clock - vp->pts; // FIXME pass durations cleanly
1107 if (framedrop && time > next_target) {
1108 is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
1109 if (is->pictq_size > 1 || time > next_target + 0.5) {
1110 /* update queue size and signal for next picture */
1111 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1112 is->pictq_rindex = 0;
1114 SDL_LockMutex(is->pictq_mutex);
1116 SDL_CondSignal(is->pictq_cond);
1117 SDL_UnlockMutex(is->pictq_mutex);
1122 if (is->subtitle_st) {
1123 if (is->subtitle_stream_changed) {
1124 SDL_LockMutex(is->subpq_mutex);
1126 while (is->subpq_size) {
1127 free_subpicture(&is->subpq[is->subpq_rindex]);
1129 /* update queue size and signal for next picture */
1130 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1131 is->subpq_rindex = 0;
1135 is->subtitle_stream_changed = 0;
1137 SDL_CondSignal(is->subpq_cond);
1138 SDL_UnlockMutex(is->subpq_mutex);
1140 if (is->subpq_size > 0) {
1141 sp = &is->subpq[is->subpq_rindex];
1143 if (is->subpq_size > 1)
1144 sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1148 if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1149 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1151 free_subpicture(sp);
1153 /* update queue size and signal for next picture */
1154 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1155 is->subpq_rindex = 0;
1157 SDL_LockMutex(is->subpq_mutex);
1159 SDL_CondSignal(is->subpq_cond);
1160 SDL_UnlockMutex(is->subpq_mutex);
1166 /* display picture */
1167 if (!display_disable)
1170 /* update queue size and signal for next picture */
1171 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1172 is->pictq_rindex = 0;
1174 SDL_LockMutex(is->pictq_mutex);
1176 SDL_CondSignal(is->pictq_cond);
1177 SDL_UnlockMutex(is->pictq_mutex);
1179 } else if (is->audio_st) {
1180 /* draw the next audio frame */
1182 /* if only audio stream, then display the audio bars (better
1183 than nothing, just to test the implementation */
1185 /* display picture */
1186 if (!display_disable)
1190 static int64_t last_time;
1192 int aqsize, vqsize, sqsize;
1195 cur_time = av_gettime_relative();
1196 if (!last_time || (cur_time - last_time) >= 30000) {
1201 aqsize = is->audioq.size;
1203 vqsize = is->videoq.size;
1204 if (is->subtitle_st)
1205 sqsize = is->subtitleq.size;
1207 if (is->audio_st && is->video_st)
1208 av_diff = get_audio_clock(is) - get_video_clock(is);
1209 printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64" \r",
1210 get_master_clock(is), av_diff, FFMAX(is->skip_frames - 1, 0), aqsize / 1024,
1211 vqsize / 1024, sqsize, is->pts_ctx.num_faulty_dts, is->pts_ctx.num_faulty_pts);
1213 last_time = cur_time;
1218 static void stream_close(VideoState *is)
1222 /* XXX: use a special url_shutdown call to abort parse cleanly */
1223 is->abort_request = 1;
1224 SDL_WaitThread(is->parse_tid, NULL);
1225 SDL_WaitThread(is->refresh_tid, NULL);
1227 /* free all pictures */
1228 for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1231 SDL_FreeYUVOverlay(vp->bmp);
1235 SDL_DestroyMutex(is->pictq_mutex);
1236 SDL_DestroyCond(is->pictq_cond);
1237 SDL_DestroyMutex(is->subpq_mutex);
1238 SDL_DestroyCond(is->subpq_cond);
1239 #if !CONFIG_AVFILTER
1240 if (is->img_convert_ctx)
1241 sws_freeContext(is->img_convert_ctx);
1246 static void do_exit(void)
1249 stream_close(cur_stream);
1253 avformat_network_deinit();
1257 av_log(NULL, AV_LOG_QUIET, "");
1261 /* allocate a picture (needs to do that in main thread to avoid
1262 potential locking problems */
1263 static void alloc_picture(void *opaque)
1265 VideoState *is = opaque;
1268 vp = &is->pictq[is->pictq_windex];
1271 SDL_FreeYUVOverlay(vp->bmp);
1274 vp->width = is->out_video_filter->inputs[0]->w;
1275 vp->height = is->out_video_filter->inputs[0]->h;
1276 vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1278 vp->width = is->video_st->codec->width;
1279 vp->height = is->video_st->codec->height;
1280 vp->pix_fmt = is->video_st->codec->pix_fmt;
1283 vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1286 if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1287 /* SDL allocates a buffer smaller than requested if the video
1288 * overlay hardware is unable to support the requested size. */
1289 fprintf(stderr, "Error: the video system does not support an image\n"
1290 "size of %dx%d pixels. Try using -vf \"scale=w:h\"\n"
1291 "to reduce the image size.\n", vp->width, vp->height );
1295 SDL_LockMutex(is->pictq_mutex);
1297 SDL_CondSignal(is->pictq_cond);
1298 SDL_UnlockMutex(is->pictq_mutex);
1301 /* The 'pts' parameter is the dts of the packet / pts of the frame and
1302 * guessed if not known. */
1303 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos)
1309 int dst_pix_fmt = AV_PIX_FMT_YUV420P;
1311 /* wait until we have space to put a new picture */
1312 SDL_LockMutex(is->pictq_mutex);
1314 if (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1315 is->skip_frames = FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0 - FRAME_SKIP_FACTOR));
1317 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1318 !is->videoq.abort_request) {
1319 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1321 SDL_UnlockMutex(is->pictq_mutex);
1323 if (is->videoq.abort_request)
1326 vp = &is->pictq[is->pictq_windex];
1328 vp->sar = src_frame->sample_aspect_ratio;
1330 /* alloc or resize hardware picture buffer */
1331 if (!vp->bmp || vp->reallocate ||
1333 vp->width != is->out_video_filter->inputs[0]->w ||
1334 vp->height != is->out_video_filter->inputs[0]->h) {
1336 vp->width != is->video_st->codec->width ||
1337 vp->height != is->video_st->codec->height) {
1344 /* the allocation must be done in the main thread to avoid
1346 event.type = FF_ALLOC_EVENT;
1347 event.user.data1 = is;
1348 SDL_PushEvent(&event);
1350 /* wait until the picture is allocated */
1351 SDL_LockMutex(is->pictq_mutex);
1352 while (!vp->allocated && !is->videoq.abort_request) {
1353 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1355 SDL_UnlockMutex(is->pictq_mutex);
1357 if (is->videoq.abort_request)
1361 /* if the frame is not skipped, then display it */
1363 AVPicture pict = { { 0 } };
1365 /* get a pointer on the bitmap */
1366 SDL_LockYUVOverlay (vp->bmp);
1368 pict.data[0] = vp->bmp->pixels[0];
1369 pict.data[1] = vp->bmp->pixels[2];
1370 pict.data[2] = vp->bmp->pixels[1];
1372 pict.linesize[0] = vp->bmp->pitches[0];
1373 pict.linesize[1] = vp->bmp->pitches[2];
1374 pict.linesize[2] = vp->bmp->pitches[1];
1377 pict_src.data[0] = src_frame->data[0];
1378 pict_src.data[1] = src_frame->data[1];
1379 pict_src.data[2] = src_frame->data[2];
1381 pict_src.linesize[0] = src_frame->linesize[0];
1382 pict_src.linesize[1] = src_frame->linesize[1];
1383 pict_src.linesize[2] = src_frame->linesize[2];
1385 // FIXME use direct rendering
1386 av_picture_copy(&pict, &pict_src,
1387 vp->pix_fmt, vp->width, vp->height);
1389 av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1390 is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1391 vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1392 dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1393 if (!is->img_convert_ctx) {
1394 fprintf(stderr, "Cannot initialize the conversion context\n");
1397 sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1398 0, vp->height, pict.data, pict.linesize);
1400 /* update the bitmap content */
1401 SDL_UnlockYUVOverlay(vp->bmp);
1406 /* now we can update the picture count */
1407 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1408 is->pictq_windex = 0;
1409 SDL_LockMutex(is->pictq_mutex);
1410 vp->target_clock = compute_target_time(vp->pts, is);
1413 SDL_UnlockMutex(is->pictq_mutex);
1418 /* Compute the exact PTS for the picture if it is omitted in the stream.
1419 * The 'pts1' parameter is the dts of the packet / pts of the frame. */
1420 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1422 double frame_delay, pts;
1428 /* update video clock with pts, if present */
1429 is->video_clock = pts;
1431 pts = is->video_clock;
1433 /* update video clock for next frame */
1434 frame_delay = av_q2d(is->video_st->codec->time_base);
1435 /* for MPEG2, the frame can be repeated, so we update the
1436 clock accordingly */
1437 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1438 is->video_clock += frame_delay;
1440 ret = queue_picture(is, src_frame, pts, pos);
1441 av_frame_unref(src_frame);
1445 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1449 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1452 if (pkt->data == flush_pkt.data) {
1453 avcodec_flush_buffers(is->video_st->codec);
1455 SDL_LockMutex(is->pictq_mutex);
1456 // Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1457 for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1458 is->pictq[i].target_clock= 0;
1460 while (is->pictq_size && !is->videoq.abort_request) {
1461 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1463 is->video_current_pos = -1;
1464 SDL_UnlockMutex(is->pictq_mutex);
1466 init_pts_correction(&is->pts_ctx);
1467 is->frame_last_pts = AV_NOPTS_VALUE;
1468 is->frame_last_delay = 0;
1469 is->frame_timer = (double)av_gettime_relative() / 1000000.0;
1470 is->skip_frames = 1;
1471 is->skip_frames_index = 0;
1475 avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt);
1478 if (decoder_reorder_pts == -1) {
1479 *pts = guess_correct_pts(&is->pts_ctx, frame->pkt_pts, frame->pkt_dts);
1480 } else if (decoder_reorder_pts) {
1481 *pts = frame->pkt_pts;
1483 *pts = frame->pkt_dts;
1486 if (*pts == AV_NOPTS_VALUE) {
1489 if (is->video_st->sample_aspect_ratio.num) {
1490 frame->sample_aspect_ratio = is->video_st->sample_aspect_ratio;
1493 is->skip_frames_index += 1;
1494 if (is->skip_frames_index >= is->skip_frames) {
1495 is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1498 av_frame_unref(frame);
1504 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1506 char sws_flags_str[128];
1507 char buffersrc_args[256];
1509 AVFilterContext *filt_src = NULL, *filt_out = NULL, *last_filter;
1510 AVCodecContext *codec = is->video_st->codec;
1512 snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1513 graph->scale_sws_opts = av_strdup(sws_flags_str);
1515 snprintf(buffersrc_args, sizeof(buffersrc_args), "%d:%d:%d:%d:%d:%d:%d",
1516 codec->width, codec->height, codec->pix_fmt,
1517 is->video_st->time_base.num, is->video_st->time_base.den,
1518 codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
1521 if ((ret = avfilter_graph_create_filter(&filt_src,
1522 avfilter_get_by_name("buffer"),
1523 "src", buffersrc_args, NULL,
1526 if ((ret = avfilter_graph_create_filter(&filt_out,
1527 avfilter_get_by_name("buffersink"),
1528 "out", NULL, NULL, graph)) < 0)
1531 last_filter = filt_out;
1533 /* Note: this macro adds a filter before the lastly added filter, so the
1534 * processing order of the filters is in reverse */
1535 #define INSERT_FILT(name, arg) do { \
1536 AVFilterContext *filt_ctx; \
1538 ret = avfilter_graph_create_filter(&filt_ctx, \
1539 avfilter_get_by_name(name), \
1540 "avplay_" name, arg, NULL, graph); \
1544 ret = avfilter_link(filt_ctx, 0, last_filter, 0); \
1548 last_filter = filt_ctx; \
1551 INSERT_FILT("format", "yuv420p");
1554 uint8_t* displaymatrix = av_stream_get_side_data(is->video_st,
1555 AV_PKT_DATA_DISPLAYMATRIX, NULL);
1556 if (displaymatrix) {
1557 double rot = av_display_rotation_get((int32_t*) displaymatrix);
1558 if (rot < -135 || rot > 135) {
1559 INSERT_FILT("vflip", NULL);
1560 INSERT_FILT("hflip", NULL);
1561 } else if (rot < -45) {
1562 INSERT_FILT("transpose", "dir=clock");
1563 } else if (rot > 45) {
1564 INSERT_FILT("transpose", "dir=cclock");
1570 AVFilterInOut *outputs = avfilter_inout_alloc();
1571 AVFilterInOut *inputs = avfilter_inout_alloc();
1573 outputs->name = av_strdup("in");
1574 outputs->filter_ctx = filt_src;
1575 outputs->pad_idx = 0;
1576 outputs->next = NULL;
1578 inputs->name = av_strdup("out");
1579 inputs->filter_ctx = last_filter;
1580 inputs->pad_idx = 0;
1581 inputs->next = NULL;
1583 if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
1586 if ((ret = avfilter_link(filt_src, 0, last_filter, 0)) < 0)
1590 if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1593 is->in_video_filter = filt_src;
1594 is->out_video_filter = filt_out;
1599 #endif /* CONFIG_AVFILTER */
1601 static int video_thread(void *arg)
1603 AVPacket pkt = { 0 };
1604 VideoState *is = arg;
1605 AVFrame *frame = av_frame_alloc();
1611 AVFilterGraph *graph = avfilter_graph_alloc();
1612 AVFilterContext *filt_out = NULL, *filt_in = NULL;
1613 int last_w = is->video_st->codec->width;
1614 int last_h = is->video_st->codec->height;
1616 av_frame_free(&frame);
1617 return AVERROR(ENOMEM);
1620 if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1622 filt_in = is->in_video_filter;
1623 filt_out = is->out_video_filter;
1628 avfilter_graph_free(&graph);
1630 return AVERROR(ENOMEM);
1637 while (is->paused && !is->videoq.abort_request)
1640 av_free_packet(&pkt);
1642 ret = get_video_frame(is, frame, &pts_int, &pkt);
1650 if ( last_w != is->video_st->codec->width
1651 || last_h != is->video_st->codec->height) {
1652 av_log(NULL, AV_LOG_TRACE, "Changing size %dx%d -> %dx%d\n", last_w, last_h,
1653 is->video_st->codec->width, is->video_st->codec->height);
1654 avfilter_graph_free(&graph);
1655 graph = avfilter_graph_alloc();
1656 if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1658 filt_in = is->in_video_filter;
1659 filt_out = is->out_video_filter;
1660 last_w = is->video_st->codec->width;
1661 last_h = is->video_st->codec->height;
1664 frame->pts = pts_int;
1665 ret = av_buffersrc_add_frame(filt_in, frame);
1670 ret = av_buffersink_get_frame(filt_out, frame);
1676 pts_int = frame->pts;
1677 tb = filt_out->inputs[0]->time_base;
1678 if (av_cmp_q(tb, is->video_st->time_base)) {
1679 av_unused int64_t pts1 = pts_int;
1680 pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1681 av_log(NULL, AV_LOG_TRACE, "video_thread(): "
1682 "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1683 tb.num, tb.den, pts1,
1684 is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1686 pts = pts_int * av_q2d(is->video_st->time_base);
1687 ret = output_picture2(is, frame, pts, 0);
1690 pts = pts_int * av_q2d(is->video_st->time_base);
1691 ret = output_picture2(is, frame, pts, pkt.pos);
1700 stream_pause(cur_stream);
1704 av_freep(&vfilters);
1705 avfilter_graph_free(&graph);
1707 av_free_packet(&pkt);
1708 av_frame_free(&frame);
1712 static int subtitle_thread(void *arg)
1714 VideoState *is = arg;
1716 AVPacket pkt1, *pkt = &pkt1;
1720 int r, g, b, y, u, v, a;
1723 while (is->paused && !is->subtitleq.abort_request) {
1726 if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1729 if (pkt->data == flush_pkt.data) {
1730 avcodec_flush_buffers(is->subtitle_st->codec);
1733 SDL_LockMutex(is->subpq_mutex);
1734 while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1735 !is->subtitleq.abort_request) {
1736 SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1738 SDL_UnlockMutex(is->subpq_mutex);
1740 if (is->subtitleq.abort_request)
1743 sp = &is->subpq[is->subpq_windex];
1745 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1746 this packet, if any */
1748 if (pkt->pts != AV_NOPTS_VALUE)
1749 pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
1751 avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1752 &got_subtitle, pkt);
1754 if (got_subtitle && sp->sub.format == 0) {
1757 for (i = 0; i < sp->sub.num_rects; i++)
1759 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1761 RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1762 y = RGB_TO_Y_CCIR(r, g, b);
1763 u = RGB_TO_U_CCIR(r, g, b, 0);
1764 v = RGB_TO_V_CCIR(r, g, b, 0);
1765 YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1769 /* now we can update the picture count */
1770 if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1771 is->subpq_windex = 0;
1772 SDL_LockMutex(is->subpq_mutex);
1774 SDL_UnlockMutex(is->subpq_mutex);
1776 av_free_packet(pkt);
1781 /* copy samples for viewing in editor window */
1782 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1786 size = samples_size / sizeof(short);
1788 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1791 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1793 is->sample_array_index += len;
1794 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1795 is->sample_array_index = 0;
1800 /* return the new audio buffer size (samples can be added or deleted
1801 to get better sync if video or external master clock) */
1802 static int synchronize_audio(VideoState *is, short *samples,
1803 int samples_size1, double pts)
1805 int n, samples_size;
1808 n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
1809 samples_size = samples_size1;
1811 /* if not master, then we try to remove or add samples to correct the clock */
1812 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1813 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1814 double diff, avg_diff;
1815 int wanted_size, min_size, max_size, nb_samples;
1817 ref_clock = get_master_clock(is);
1818 diff = get_audio_clock(is) - ref_clock;
1820 if (diff < AV_NOSYNC_THRESHOLD) {
1821 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1822 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1823 /* not enough measures to have a correct estimate */
1824 is->audio_diff_avg_count++;
1826 /* estimate the A-V difference */
1827 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1829 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1830 wanted_size = samples_size + ((int)(diff * is->sdl_sample_rate) * n);
1831 nb_samples = samples_size / n;
1833 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1834 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1835 if (wanted_size < min_size)
1836 wanted_size = min_size;
1837 else if (wanted_size > max_size)
1838 wanted_size = max_size;
1840 /* add or remove samples to correction the synchro */
1841 if (wanted_size < samples_size) {
1842 /* remove samples */
1843 samples_size = wanted_size;
1844 } else if (wanted_size > samples_size) {
1845 uint8_t *samples_end, *q;
1849 nb = (samples_size - wanted_size);
1850 samples_end = (uint8_t *)samples + samples_size - n;
1851 q = samples_end + n;
1853 memcpy(q, samples_end, n);
1857 samples_size = wanted_size;
1860 av_log(NULL, AV_LOG_TRACE, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1861 diff, avg_diff, samples_size - samples_size1,
1862 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1865 /* too big difference : may be initial PTS errors, so
1867 is->audio_diff_avg_count = 0;
1868 is->audio_diff_cum = 0;
1872 return samples_size;
1875 /* decode one audio frame and returns its uncompressed size */
1876 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1878 AVPacket *pkt_temp = &is->audio_pkt_temp;
1879 AVPacket *pkt = &is->audio_pkt;
1880 AVCodecContext *dec = is->audio_st->codec;
1881 int n, len1, data_size, got_frame;
1884 int flush_complete = 0;
1887 /* NOTE: the audio packet can contain several frames */
1888 while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
1889 int resample_changed, audio_resample;
1892 if (!(is->frame = av_frame_alloc()))
1893 return AVERROR(ENOMEM);
1899 len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
1901 /* if error, we skip the frame */
1906 pkt_temp->data += len1;
1907 pkt_temp->size -= len1;
1910 /* stop sending empty packets if the decoder is finished */
1911 if (!pkt_temp->data && (dec->codec->capabilities & AV_CODEC_CAP_DELAY))
1915 data_size = av_samples_get_buffer_size(NULL, dec->channels,
1916 is->frame->nb_samples,
1917 is->frame->format, 1);
1919 audio_resample = is->frame->format != is->sdl_sample_fmt ||
1920 is->frame->channel_layout != is->sdl_channel_layout ||
1921 is->frame->sample_rate != is->sdl_sample_rate;
1923 resample_changed = is->frame->format != is->resample_sample_fmt ||
1924 is->frame->channel_layout != is->resample_channel_layout ||
1925 is->frame->sample_rate != is->resample_sample_rate;
1927 if ((!is->avr && audio_resample) || resample_changed) {
1930 avresample_close(is->avr);
1931 else if (audio_resample) {
1932 is->avr = avresample_alloc_context();
1934 fprintf(stderr, "error allocating AVAudioResampleContext\n");
1938 if (audio_resample) {
1939 av_opt_set_int(is->avr, "in_channel_layout", is->frame->channel_layout, 0);
1940 av_opt_set_int(is->avr, "in_sample_fmt", is->frame->format, 0);
1941 av_opt_set_int(is->avr, "in_sample_rate", is->frame->sample_rate, 0);
1942 av_opt_set_int(is->avr, "out_channel_layout", is->sdl_channel_layout, 0);
1943 av_opt_set_int(is->avr, "out_sample_fmt", is->sdl_sample_fmt, 0);
1944 av_opt_set_int(is->avr, "out_sample_rate", is->sdl_sample_rate, 0);
1946 if ((ret = avresample_open(is->avr)) < 0) {
1947 fprintf(stderr, "error initializing libavresample\n");
1951 is->resample_sample_fmt = is->frame->format;
1952 is->resample_channel_layout = is->frame->channel_layout;
1953 is->resample_sample_rate = is->frame->sample_rate;
1956 if (audio_resample) {
1958 int out_samples, out_size, out_linesize;
1959 int osize = av_get_bytes_per_sample(is->sdl_sample_fmt);
1960 int nb_samples = is->frame->nb_samples;
1962 out_size = av_samples_get_buffer_size(&out_linesize,
1965 is->sdl_sample_fmt, 0);
1966 tmp_out = av_realloc(is->audio_buf1, out_size);
1968 return AVERROR(ENOMEM);
1969 is->audio_buf1 = tmp_out;
1971 out_samples = avresample_convert(is->avr,
1973 out_linesize, nb_samples,
1975 is->frame->linesize[0],
1976 is->frame->nb_samples);
1977 if (out_samples < 0) {
1978 fprintf(stderr, "avresample_convert() failed\n");
1981 is->audio_buf = is->audio_buf1;
1982 data_size = out_samples * osize * is->sdl_channels;
1984 is->audio_buf = is->frame->data[0];
1987 /* if no pts, then compute it */
1988 pts = is->audio_clock;
1990 n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
1991 is->audio_clock += (double)data_size /
1992 (double)(n * is->sdl_sample_rate);
1995 static double last_clock;
1996 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1997 is->audio_clock - last_clock,
1998 is->audio_clock, pts);
1999 last_clock = is->audio_clock;
2005 /* free the current packet */
2007 av_free_packet(pkt);
2008 memset(pkt_temp, 0, sizeof(*pkt_temp));
2010 if (is->paused || is->audioq.abort_request) {
2014 /* read next packet */
2015 if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
2018 if (pkt->data == flush_pkt.data) {
2019 avcodec_flush_buffers(dec);
2025 /* if update the audio clock with the pts */
2026 if (pkt->pts != AV_NOPTS_VALUE) {
2027 is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2032 /* prepare a new audio buffer */
2033 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2035 VideoState *is = opaque;
2036 int audio_size, len1;
2039 audio_callback_time = av_gettime_relative();
2042 if (is->audio_buf_index >= is->audio_buf_size) {
2043 audio_size = audio_decode_frame(is, &pts);
2044 if (audio_size < 0) {
2045 /* if error, just output silence */
2046 is->audio_buf = is->silence_buf;
2047 is->audio_buf_size = sizeof(is->silence_buf);
2050 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2051 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2053 is->audio_buf_size = audio_size;
2055 is->audio_buf_index = 0;
2057 len1 = is->audio_buf_size - is->audio_buf_index;
2060 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2063 is->audio_buf_index += len1;
2067 /* open a given stream. Return 0 if OK */
2068 static int stream_component_open(VideoState *is, int stream_index)
2070 AVFormatContext *ic = is->ic;
2071 AVCodecContext *avctx;
2073 SDL_AudioSpec wanted_spec, spec;
2075 AVDictionaryEntry *t = NULL;
2078 if (stream_index < 0 || stream_index >= ic->nb_streams)
2080 avctx = ic->streams[stream_index]->codec;
2082 opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], NULL);
2084 codec = avcodec_find_decoder(avctx->codec_id);
2085 avctx->workaround_bugs = workaround_bugs;
2086 avctx->idct_algo = idct;
2087 avctx->skip_frame = skip_frame;
2088 avctx->skip_idct = skip_idct;
2089 avctx->skip_loop_filter = skip_loop_filter;
2090 avctx->error_concealment = error_concealment;
2093 avctx->flags2 |= AV_CODEC_FLAG2_FAST;
2095 if (!av_dict_get(opts, "threads", NULL, 0))
2096 av_dict_set(&opts, "threads", "auto", 0);
2097 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO)
2098 av_dict_set(&opts, "refcounted_frames", "1", 0);
2100 (ret = avcodec_open2(avctx, codec, &opts)) < 0) {
2103 if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2104 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2105 ret = AVERROR_OPTION_NOT_FOUND;
2109 /* prepare audio output */
2110 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2111 is->sdl_sample_rate = avctx->sample_rate;
2113 if (!avctx->channel_layout)
2114 avctx->channel_layout = av_get_default_channel_layout(avctx->channels);
2115 if (!avctx->channel_layout) {
2116 fprintf(stderr, "unable to guess channel layout\n");
2117 ret = AVERROR_INVALIDDATA;
2120 if (avctx->channels == 1)
2121 is->sdl_channel_layout = AV_CH_LAYOUT_MONO;
2123 is->sdl_channel_layout = AV_CH_LAYOUT_STEREO;
2124 is->sdl_channels = av_get_channel_layout_nb_channels(is->sdl_channel_layout);
2126 wanted_spec.format = AUDIO_S16SYS;
2127 wanted_spec.freq = is->sdl_sample_rate;
2128 wanted_spec.channels = is->sdl_channels;
2129 wanted_spec.silence = 0;
2130 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2131 wanted_spec.callback = sdl_audio_callback;
2132 wanted_spec.userdata = is;
2133 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2134 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2135 ret = AVERROR_UNKNOWN;
2138 is->audio_hw_buf_size = spec.size;
2139 is->sdl_sample_fmt = AV_SAMPLE_FMT_S16;
2140 is->resample_sample_fmt = is->sdl_sample_fmt;
2141 is->resample_channel_layout = avctx->channel_layout;
2142 is->resample_sample_rate = avctx->sample_rate;
2145 ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2146 switch (avctx->codec_type) {
2147 case AVMEDIA_TYPE_AUDIO:
2148 is->audio_stream = stream_index;
2149 is->audio_st = ic->streams[stream_index];
2150 is->audio_buf_size = 0;
2151 is->audio_buf_index = 0;
2153 /* init averaging filter */
2154 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2155 is->audio_diff_avg_count = 0;
2156 /* since we do not have a precise anough audio fifo fullness,
2157 we correct audio sync only if larger than this threshold */
2158 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2160 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2161 packet_queue_init(&is->audioq);
2164 case AVMEDIA_TYPE_VIDEO:
2165 is->video_stream = stream_index;
2166 is->video_st = ic->streams[stream_index];
2168 packet_queue_init(&is->videoq);
2169 is->video_tid = SDL_CreateThread(video_thread, is);
2171 case AVMEDIA_TYPE_SUBTITLE:
2172 is->subtitle_stream = stream_index;
2173 is->subtitle_st = ic->streams[stream_index];
2174 packet_queue_init(&is->subtitleq);
2176 is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2183 av_dict_free(&opts);
2188 static void stream_component_close(VideoState *is, int stream_index)
2190 AVFormatContext *ic = is->ic;
2191 AVCodecContext *avctx;
2193 if (stream_index < 0 || stream_index >= ic->nb_streams)
2195 avctx = ic->streams[stream_index]->codec;
2197 switch (avctx->codec_type) {
2198 case AVMEDIA_TYPE_AUDIO:
2199 packet_queue_abort(&is->audioq);
2203 packet_queue_end(&is->audioq);
2204 av_free_packet(&is->audio_pkt);
2206 avresample_free(&is->avr);
2207 av_freep(&is->audio_buf1);
2208 is->audio_buf = NULL;
2209 av_frame_free(&is->frame);
2212 av_rdft_end(is->rdft);
2213 av_freep(&is->rdft_data);
2218 case AVMEDIA_TYPE_VIDEO:
2219 packet_queue_abort(&is->videoq);
2221 /* note: we also signal this mutex to make sure we deblock the
2222 video thread in all cases */
2223 SDL_LockMutex(is->pictq_mutex);
2224 SDL_CondSignal(is->pictq_cond);
2225 SDL_UnlockMutex(is->pictq_mutex);
2227 SDL_WaitThread(is->video_tid, NULL);
2229 packet_queue_end(&is->videoq);
2231 case AVMEDIA_TYPE_SUBTITLE:
2232 packet_queue_abort(&is->subtitleq);
2234 /* note: we also signal this mutex to make sure we deblock the
2235 video thread in all cases */
2236 SDL_LockMutex(is->subpq_mutex);
2237 is->subtitle_stream_changed = 1;
2239 SDL_CondSignal(is->subpq_cond);
2240 SDL_UnlockMutex(is->subpq_mutex);
2242 SDL_WaitThread(is->subtitle_tid, NULL);
2244 packet_queue_end(&is->subtitleq);
2250 ic->streams[stream_index]->discard = AVDISCARD_ALL;
2251 avcodec_close(avctx);
2252 switch (avctx->codec_type) {
2253 case AVMEDIA_TYPE_AUDIO:
2254 is->audio_st = NULL;
2255 is->audio_stream = -1;
2257 case AVMEDIA_TYPE_VIDEO:
2258 is->video_st = NULL;
2259 is->video_stream = -1;
2261 case AVMEDIA_TYPE_SUBTITLE:
2262 is->subtitle_st = NULL;
2263 is->subtitle_stream = -1;
2270 /* since we have only one decoding thread, we can use a global
2271 variable instead of a thread local variable */
2272 static VideoState *global_video_state;
2274 static int decode_interrupt_cb(void *ctx)
2276 return global_video_state && global_video_state->abort_request;
2279 /* this thread gets the stream from the disk or the network */
2280 static int decode_thread(void *arg)
2282 VideoState *is = arg;
2283 AVFormatContext *ic = NULL;
2285 int st_index[AVMEDIA_TYPE_NB];
2286 AVPacket pkt1, *pkt = &pkt1;
2288 int pkt_in_play_range = 0;
2289 AVDictionaryEntry *t;
2290 AVDictionary **opts;
2291 int orig_nb_streams;
2293 memset(st_index, -1, sizeof(st_index));
2294 is->video_stream = -1;
2295 is->audio_stream = -1;
2296 is->subtitle_stream = -1;
2298 global_video_state = is;
2300 ic = avformat_alloc_context();
2302 av_log(NULL, AV_LOG_FATAL, "Could not allocate context.\n");
2303 ret = AVERROR(ENOMEM);
2306 ic->interrupt_callback.callback = decode_interrupt_cb;
2307 err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2309 print_error(is->filename, err);
2313 if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2314 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2315 ret = AVERROR_OPTION_NOT_FOUND;
2321 ic->flags |= AVFMT_FLAG_GENPTS;
2323 opts = setup_find_stream_info_opts(ic, codec_opts);
2324 orig_nb_streams = ic->nb_streams;
2326 err = avformat_find_stream_info(ic, opts);
2328 for (i = 0; i < orig_nb_streams; i++)
2329 av_dict_free(&opts[i]);
2333 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2339 ic->pb->eof_reached = 0; // FIXME hack, avplay maybe should not use url_feof() to test for the end
2341 if (seek_by_bytes < 0)
2342 seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2344 /* if seeking requested, we execute it */
2345 if (start_time != AV_NOPTS_VALUE) {
2348 timestamp = start_time;
2349 /* add the stream start time */
2350 if (ic->start_time != AV_NOPTS_VALUE)
2351 timestamp += ic->start_time;
2352 ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2354 fprintf(stderr, "%s: could not seek to position %0.3f\n",
2355 is->filename, (double)timestamp / AV_TIME_BASE);
2359 for (i = 0; i < ic->nb_streams; i++)
2360 ic->streams[i]->discard = AVDISCARD_ALL;
2362 st_index[AVMEDIA_TYPE_VIDEO] =
2363 av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2364 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2366 st_index[AVMEDIA_TYPE_AUDIO] =
2367 av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2368 wanted_stream[AVMEDIA_TYPE_AUDIO],
2369 st_index[AVMEDIA_TYPE_VIDEO],
2372 st_index[AVMEDIA_TYPE_SUBTITLE] =
2373 av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2374 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2375 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2376 st_index[AVMEDIA_TYPE_AUDIO] :
2377 st_index[AVMEDIA_TYPE_VIDEO]),
2380 av_dump_format(ic, 0, is->filename, 0);
2383 /* open the streams */
2384 if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2385 stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2389 if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2390 ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2392 is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2394 if (!display_disable)
2398 if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2399 stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2402 if (is->video_stream < 0 && is->audio_stream < 0) {
2403 fprintf(stderr, "%s: could not open codecs\n", is->filename);
2409 if (is->abort_request)
2411 if (is->paused != is->last_paused) {
2412 is->last_paused = is->paused;
2414 is->read_pause_return = av_read_pause(ic);
2418 #if CONFIG_RTSP_DEMUXER
2419 if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2420 /* wait 10 ms to avoid trying to get another packet */
2427 int64_t seek_target = is->seek_pos;
2428 int64_t seek_min = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2429 int64_t seek_max = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2430 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2431 // of the seek_pos/seek_rel variables
2433 ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2435 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2437 if (is->audio_stream >= 0) {
2438 packet_queue_flush(&is->audioq);
2439 packet_queue_put(&is->audioq, &flush_pkt);
2441 if (is->subtitle_stream >= 0) {
2442 packet_queue_flush(&is->subtitleq);
2443 packet_queue_put(&is->subtitleq, &flush_pkt);
2445 if (is->video_stream >= 0) {
2446 packet_queue_flush(&is->videoq);
2447 packet_queue_put(&is->videoq, &flush_pkt);
2454 /* if the queue are full, no need to read more */
2455 if (!infinite_buffer &&
2456 (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2457 || ( (is->audioq .size > MIN_AUDIOQ_SIZE || is->audio_stream < 0)
2458 && (is->videoq .nb_packets > MIN_FRAMES || is->video_stream < 0)
2459 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0)))) {
2465 if (is->video_stream >= 0) {
2466 av_init_packet(pkt);
2469 pkt->stream_index = is->video_stream;
2470 packet_queue_put(&is->videoq, pkt);
2472 if (is->audio_stream >= 0 &&
2473 (is->audio_st->codec->codec->capabilities & AV_CODEC_CAP_DELAY)) {
2474 av_init_packet(pkt);
2477 pkt->stream_index = is->audio_stream;
2478 packet_queue_put(&is->audioq, pkt);
2481 if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2482 if (loop != 1 && (!loop || --loop)) {
2483 stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2484 } else if (!noautoexit) {
2491 ret = av_read_frame(ic, pkt);
2493 if (ret == AVERROR_EOF || (ic->pb && ic->pb->eof_reached))
2495 if (ic->pb && ic->pb->error)
2497 SDL_Delay(100); /* wait for user event */
2500 /* check if packet is in play range specified by user, then queue, otherwise discard */
2501 pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2502 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2503 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2504 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2505 <= ((double)duration / 1000000);
2506 if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2507 packet_queue_put(&is->audioq, pkt);
2508 } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2509 packet_queue_put(&is->videoq, pkt);
2510 } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2511 packet_queue_put(&is->subtitleq, pkt);
2513 av_free_packet(pkt);
2516 /* wait until the end */
2517 while (!is->abort_request) {
2523 /* disable interrupting */
2524 global_video_state = NULL;
2526 /* close each stream */
2527 if (is->audio_stream >= 0)
2528 stream_component_close(is, is->audio_stream);
2529 if (is->video_stream >= 0)
2530 stream_component_close(is, is->video_stream);
2531 if (is->subtitle_stream >= 0)
2532 stream_component_close(is, is->subtitle_stream);
2534 avformat_close_input(&is->ic);
2540 event.type = FF_QUIT_EVENT;
2541 event.user.data1 = is;
2542 SDL_PushEvent(&event);
2547 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2551 is = av_mallocz(sizeof(VideoState));
2554 av_strlcpy(is->filename, filename, sizeof(is->filename));
2555 is->iformat = iformat;
2559 /* start video display */
2560 is->pictq_mutex = SDL_CreateMutex();
2561 is->pictq_cond = SDL_CreateCond();
2563 is->subpq_mutex = SDL_CreateMutex();
2564 is->subpq_cond = SDL_CreateCond();
2566 is->av_sync_type = av_sync_type;
2567 is->parse_tid = SDL_CreateThread(decode_thread, is);
2568 if (!is->parse_tid) {
2575 static void stream_cycle_channel(VideoState *is, int codec_type)
2577 AVFormatContext *ic = is->ic;
2578 int start_index, stream_index;
2581 if (codec_type == AVMEDIA_TYPE_VIDEO)
2582 start_index = is->video_stream;
2583 else if (codec_type == AVMEDIA_TYPE_AUDIO)
2584 start_index = is->audio_stream;
2586 start_index = is->subtitle_stream;
2587 if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2589 stream_index = start_index;
2591 if (++stream_index >= is->ic->nb_streams)
2593 if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2600 if (stream_index == start_index)
2602 st = ic->streams[stream_index];
2603 if (st->codec->codec_type == codec_type) {
2604 /* check that parameters are OK */
2605 switch (codec_type) {
2606 case AVMEDIA_TYPE_AUDIO:
2607 if (st->codec->sample_rate != 0 &&
2608 st->codec->channels != 0)
2611 case AVMEDIA_TYPE_VIDEO:
2612 case AVMEDIA_TYPE_SUBTITLE:
2620 stream_component_close(is, start_index);
2621 stream_component_open(is, stream_index);
2625 static void toggle_full_screen(void)
2627 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2628 /* OS X needs to empty the picture_queue */
2630 for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
2631 cur_stream->pictq[i].reallocate = 1;
2633 is_full_screen = !is_full_screen;
2634 video_open(cur_stream);
2637 static void toggle_pause(void)
2640 stream_pause(cur_stream);
2644 static void step_to_next_frame(void)
2647 /* if the stream is paused unpause it, then step */
2648 if (cur_stream->paused)
2649 stream_pause(cur_stream);
2654 static void toggle_audio_display(void)
2657 int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2658 cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
2659 fill_rectangle(screen,
2660 cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2662 SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2666 static void seek_chapter(VideoState *is, int incr)
2668 int64_t pos = get_master_clock(is) * AV_TIME_BASE;
2671 if (!is->ic->nb_chapters)
2674 /* find the current chapter */
2675 for (i = 0; i < is->ic->nb_chapters; i++) {
2676 AVChapter *ch = is->ic->chapters[i];
2677 if (av_compare_ts(pos, AV_TIME_BASE_Q, ch->start, ch->time_base) < 0) {
2685 if (i >= is->ic->nb_chapters)
2688 av_log(NULL, AV_LOG_VERBOSE, "Seeking to chapter %d.\n", i);
2689 stream_seek(is, av_rescale_q(is->ic->chapters[i]->start, is->ic->chapters[i]->time_base,
2690 AV_TIME_BASE_Q), 0, 0);
2693 /* handle an event sent by the GUI */
2694 static void event_loop(void)
2697 double incr, pos, frac;
2701 SDL_WaitEvent(&event);
2702 switch (event.type) {
2704 if (exit_on_keydown) {
2708 switch (event.key.keysym.sym) {
2714 toggle_full_screen();
2720 case SDLK_s: // S: Step to next frame
2721 step_to_next_frame();
2725 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2729 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2733 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2736 toggle_audio_display();
2739 seek_chapter(cur_stream, 1);
2742 seek_chapter(cur_stream, -1);
2757 if (seek_by_bytes) {
2758 if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2759 pos = cur_stream->video_current_pos;
2760 } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2761 pos = cur_stream->audio_pkt.pos;
2763 pos = avio_tell(cur_stream->ic->pb);
2764 if (cur_stream->ic->bit_rate)
2765 incr *= cur_stream->ic->bit_rate / 8.0;
2769 stream_seek(cur_stream, pos, incr, 1);
2771 pos = get_master_clock(cur_stream);
2773 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2781 case SDL_MOUSEBUTTONDOWN:
2782 if (exit_on_mousedown) {
2786 case SDL_MOUSEMOTION:
2787 if (event.type == SDL_MOUSEBUTTONDOWN) {
2790 if (event.motion.state != SDL_PRESSED)
2795 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2796 uint64_t size = avio_size(cur_stream->ic->pb);
2797 stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2801 int tns, thh, tmm, tss;
2802 tns = cur_stream->ic->duration / 1000000LL;
2804 tmm = (tns % 3600) / 60;
2806 frac = x / cur_stream->width;
2809 mm = (ns % 3600) / 60;
2811 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
2812 hh, mm, ss, thh, tmm, tss);
2813 ts = frac * cur_stream->ic->duration;
2814 if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2815 ts += cur_stream->ic->start_time;
2816 stream_seek(cur_stream, ts, 0, 0);
2820 case SDL_VIDEORESIZE:
2822 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2823 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2824 screen_width = cur_stream->width = event.resize.w;
2825 screen_height = cur_stream->height = event.resize.h;
2832 case FF_ALLOC_EVENT:
2833 video_open(event.user.data1);
2834 alloc_picture(event.user.data1);
2836 case FF_REFRESH_EVENT:
2837 video_refresh_timer(event.user.data1);
2838 cur_stream->refresh = 0;
2846 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
2848 av_log(NULL, AV_LOG_ERROR,
2849 "Option '%s' has been removed, use private format options instead\n", opt);
2850 return AVERROR(EINVAL);
2853 static int opt_width(void *optctx, const char *opt, const char *arg)
2855 screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2859 static int opt_height(void *optctx, const char *opt, const char *arg)
2861 screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2865 static int opt_format(void *optctx, const char *opt, const char *arg)
2867 file_iformat = av_find_input_format(arg);
2868 if (!file_iformat) {
2869 fprintf(stderr, "Unknown input format: %s\n", arg);
2870 return AVERROR(EINVAL);
2875 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
2877 av_log(NULL, AV_LOG_ERROR,
2878 "Option '%s' has been removed, use private format options instead\n", opt);
2879 return AVERROR(EINVAL);
2882 static int opt_sync(void *optctx, const char *opt, const char *arg)
2884 if (!strcmp(arg, "audio"))
2885 av_sync_type = AV_SYNC_AUDIO_MASTER;
2886 else if (!strcmp(arg, "video"))
2887 av_sync_type = AV_SYNC_VIDEO_MASTER;
2888 else if (!strcmp(arg, "ext"))
2889 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2891 fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2897 static int opt_seek(void *optctx, const char *opt, const char *arg)
2899 start_time = parse_time_or_die(opt, arg, 1);
2903 static int opt_duration(void *optctx, const char *opt, const char *arg)
2905 duration = parse_time_or_die(opt, arg, 1);
2909 static const OptionDef options[] = {
2910 #include "cmdutils_common_opts.h"
2911 { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
2912 { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
2913 { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2914 { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
2915 { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
2916 { "vn", OPT_BOOL, { &video_disable }, "disable video" },
2917 { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2918 { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2919 { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2920 { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
2921 { "t", HAS_ARG, { .func_arg = opt_duration }, "play \"duration\" seconds of audio/video", "duration" },
2922 { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2923 { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
2924 { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
2925 { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
2926 { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
2927 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { &workaround_bugs }, "workaround bugs", "" },
2928 { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
2929 { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
2930 { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2931 { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_loop_filter }, "", "" },
2932 { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_frame }, "", "" },
2933 { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_idct }, "", "" },
2934 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { &idct }, "set idct algo", "algo" },
2935 { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { &error_concealment }, "set error concealment options", "bit_mask" },
2936 { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
2937 { "noautoexit", OPT_BOOL | OPT_EXPERT, { &noautoexit }, "Do not exit at the end of playback", "" },
2938 { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
2939 { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
2940 { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
2941 { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
2942 { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
2943 { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
2945 { "vf", OPT_STRING | HAS_ARG, { &vfilters }, "video filters", "filter list" },
2947 { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
2948 { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { opt_default }, "generic catch all option", "" },
2949 { "i", 0, { NULL }, "avconv compatibility dummy option", ""},
2950 { "autorotate", OPT_BOOL, { &autorotate }, "automatically rotate video", "" },
2954 static void show_usage(void)
2956 printf("Simple media player\n");
2957 printf("usage: %s [options] input_file\n", program_name);
2961 void show_help_default(const char *opt, const char *arg)
2963 av_log_set_callback(log_callback_help);
2965 show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
2966 show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
2968 show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2969 show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2970 #if !CONFIG_AVFILTER
2971 show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
2973 printf("\nWhile playing:\n"
2975 "f toggle full screen\n"
2977 "a cycle audio channel\n"
2978 "v cycle video channel\n"
2979 "t cycle subtitle channel\n"
2980 "w show audio waves\n"
2981 "s activate frame-step mode\n"
2982 "left/right seek backward/forward 10 seconds\n"
2983 "down/up seek backward/forward 1 minute\n"
2984 "mouse click seek to percentage in file corresponding to fraction of width\n"
2988 static void opt_input_file(void *optctx, const char *filename)
2990 if (input_filename) {
2991 fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2992 filename, input_filename);
2995 if (!strcmp(filename, "-"))
2997 input_filename = filename;
3000 /* Called from the main */
3001 int main(int argc, char **argv)
3005 av_log_set_flags(AV_LOG_SKIP_REPEATED);
3006 parse_loglevel(argc, argv, options);
3008 /* register all codecs, demux and protocols */
3009 avcodec_register_all();
3011 avdevice_register_all();
3014 avfilter_register_all();
3017 avformat_network_init();
3023 parse_options(NULL, argc, argv, options, opt_input_file);
3025 if (!input_filename) {
3027 fprintf(stderr, "An input file must be specified\n");
3028 fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3032 if (display_disable) {
3035 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
3036 #if !defined(__MINGW32__) && !defined(__APPLE__)
3037 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
3039 if (SDL_Init (flags)) {
3040 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3044 if (!display_disable) {
3045 const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3046 fs_screen_width = vi->current_w;
3047 fs_screen_height = vi->current_h;
3050 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3051 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3052 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3054 av_init_packet(&flush_pkt);
3055 flush_pkt.data = (uint8_t *)&flush_pkt;
3057 cur_stream = stream_open(input_filename, file_iformat);