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
26 #include "libavutil/avstring.h"
27 #include "libavutil/colorspace.h"
28 #include "libavutil/mathematics.h"
29 #include "libavutil/pixdesc.h"
30 #include "libavutil/imgutils.h"
31 #include "libavutil/dict.h"
32 #include "libavutil/parseutils.h"
33 #include "libavutil/samplefmt.h"
34 #include "libavutil/time.h"
35 #include "libavformat/avformat.h"
36 #include "libavdevice/avdevice.h"
37 #include "libswscale/swscale.h"
38 #include "libavresample/avresample.h"
39 #include "libavutil/opt.h"
40 #include "libavcodec/avfft.h"
43 # include "libavfilter/avfilter.h"
44 # include "libavfilter/buffersink.h"
45 # include "libavfilter/buffersrc.h"
51 #include <SDL_thread.h>
54 #undef main /* We don't want SDL to override our main() */
59 const char program_name[] = "avplay";
60 const int program_birth_year = 2003;
62 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
63 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
66 /* SDL audio buffer size, in samples. Should be small to have precise
67 A/V sync as SDL does not have hardware buffer fullness info. */
68 #define SDL_AUDIO_BUFFER_SIZE 1024
70 /* no AV sync correction is done if below the AV sync threshold */
71 #define AV_SYNC_THRESHOLD 0.01
72 /* no AV correction is done if too big error */
73 #define AV_NOSYNC_THRESHOLD 10.0
75 #define FRAME_SKIP_FACTOR 0.05
77 /* maximum audio speed change to get correct sync */
78 #define SAMPLE_CORRECTION_PERCENT_MAX 10
80 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
81 #define AUDIO_DIFF_AVG_NB 20
83 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
84 #define SAMPLE_ARRAY_SIZE (2 * 65536)
86 static int64_t sws_flags = SWS_BICUBIC;
88 typedef struct PacketQueue {
89 AVPacketList *first_pkt, *last_pkt;
97 #define VIDEO_PICTURE_QUEUE_SIZE 2
98 #define SUBPICTURE_QUEUE_SIZE 4
100 typedef struct VideoPicture {
101 double pts; // presentation timestamp for this picture
102 double target_clock; // av_gettime() time at which this should be displayed ideally
103 int64_t pos; // byte position in file
105 int width, height; /* source height & width */
108 enum AVPixelFormat pix_fmt;
113 typedef struct SubPicture {
114 double pts; /* presentation time stamp for this picture */
119 AV_SYNC_AUDIO_MASTER, /* default choice */
120 AV_SYNC_VIDEO_MASTER,
121 AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
124 typedef struct VideoState {
125 SDL_Thread *parse_tid;
126 SDL_Thread *video_tid;
127 SDL_Thread *refresh_tid;
128 AVInputFormat *iformat;
137 int read_pause_return;
143 double external_clock; /* external clock base */
144 int64_t external_clock_time;
147 double audio_diff_cum; /* used for AV difference average computation */
148 double audio_diff_avg_coef;
149 double audio_diff_threshold;
150 int audio_diff_avg_count;
153 int audio_hw_buf_size;
154 uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
157 unsigned int audio_buf_size; /* in bytes */
158 int audio_buf_index; /* in bytes */
159 AVPacket audio_pkt_temp;
161 enum AVSampleFormat sdl_sample_fmt;
162 uint64_t sdl_channel_layout;
165 enum AVSampleFormat resample_sample_fmt;
166 uint64_t resample_channel_layout;
167 int resample_sample_rate;
168 AVAudioResampleContext *avr;
171 int show_audio; /* if true, display audio samples */
172 int16_t sample_array[SAMPLE_ARRAY_SIZE];
173 int sample_array_index;
177 FFTSample *rdft_data;
180 SDL_Thread *subtitle_tid;
182 int subtitle_stream_changed;
183 AVStream *subtitle_st;
184 PacketQueue subtitleq;
185 SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
186 int subpq_size, subpq_rindex, subpq_windex;
187 SDL_mutex *subpq_mutex;
188 SDL_cond *subpq_cond;
191 double frame_last_pts;
192 double frame_last_delay;
193 double video_clock; // pts of last decoded frame / predicted pts of next decoded frame
197 double video_current_pts; // current displayed pts (different from video_clock if frame fifos are used)
198 double video_current_pts_drift; // video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
199 int64_t video_current_pos; // current displayed file pos
200 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
201 int pictq_size, pictq_rindex, pictq_windex;
202 SDL_mutex *pictq_mutex;
203 SDL_cond *pictq_cond;
205 struct SwsContext *img_convert_ctx;
208 // QETimer *video_timer;
210 int width, height, xleft, ytop;
212 PtsCorrectionContext pts_ctx;
215 AVFilterContext *in_video_filter; // the first filter in the video chain
216 AVFilterContext *out_video_filter; // the last filter in the video chain
220 float skip_frames_index;
224 /* options specified by the user */
225 static AVInputFormat *file_iformat;
226 static const char *input_filename;
227 static const char *window_title;
228 static int fs_screen_width;
229 static int fs_screen_height;
230 static int screen_width = 0;
231 static int screen_height = 0;
232 static int audio_disable;
233 static int video_disable;
234 static int wanted_stream[AVMEDIA_TYPE_NB] = {
235 [AVMEDIA_TYPE_AUDIO] = -1,
236 [AVMEDIA_TYPE_VIDEO] = -1,
237 [AVMEDIA_TYPE_SUBTITLE] = -1,
239 static int seek_by_bytes = -1;
240 static int display_disable;
241 static int show_status = 1;
242 static int av_sync_type = AV_SYNC_AUDIO_MASTER;
243 static int64_t start_time = AV_NOPTS_VALUE;
244 static int64_t duration = AV_NOPTS_VALUE;
246 static int workaround_bugs = 1;
248 static int genpts = 0;
249 static int idct = FF_IDCT_AUTO;
250 static enum AVDiscard skip_frame = AVDISCARD_DEFAULT;
251 static enum AVDiscard skip_idct = AVDISCARD_DEFAULT;
252 static enum AVDiscard skip_loop_filter = AVDISCARD_DEFAULT;
253 static int error_concealment = 3;
254 static int decoder_reorder_pts = -1;
256 static int exit_on_keydown;
257 static int exit_on_mousedown;
259 static int framedrop = 1;
260 static int infinite_buffer = 0;
262 static int rdftspeed = 20;
264 static char *vfilters = NULL;
267 /* current context */
268 static int is_full_screen;
269 static VideoState *cur_stream;
270 static int64_t audio_callback_time;
272 static AVPacket flush_pkt;
274 #define FF_ALLOC_EVENT (SDL_USEREVENT)
275 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
276 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
278 static SDL_Surface *screen;
280 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
282 /* packet queue handling */
283 static void packet_queue_init(PacketQueue *q)
285 memset(q, 0, sizeof(PacketQueue));
286 q->mutex = SDL_CreateMutex();
287 q->cond = SDL_CreateCond();
288 packet_queue_put(q, &flush_pkt);
291 static void packet_queue_flush(PacketQueue *q)
293 AVPacketList *pkt, *pkt1;
295 SDL_LockMutex(q->mutex);
296 for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
298 av_free_packet(&pkt->pkt);
305 SDL_UnlockMutex(q->mutex);
308 static void packet_queue_end(PacketQueue *q)
310 packet_queue_flush(q);
311 SDL_DestroyMutex(q->mutex);
312 SDL_DestroyCond(q->cond);
315 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
319 /* duplicate the packet */
320 if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
323 pkt1 = av_malloc(sizeof(AVPacketList));
330 SDL_LockMutex(q->mutex);
336 q->last_pkt->next = pkt1;
339 q->size += pkt1->pkt.size + sizeof(*pkt1);
340 /* XXX: should duplicate packet data in DV case */
341 SDL_CondSignal(q->cond);
343 SDL_UnlockMutex(q->mutex);
347 static void packet_queue_abort(PacketQueue *q)
349 SDL_LockMutex(q->mutex);
351 q->abort_request = 1;
353 SDL_CondSignal(q->cond);
355 SDL_UnlockMutex(q->mutex);
358 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
359 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
364 SDL_LockMutex(q->mutex);
367 if (q->abort_request) {
374 q->first_pkt = pkt1->next;
378 q->size -= pkt1->pkt.size + sizeof(*pkt1);
387 SDL_CondWait(q->cond, q->mutex);
390 SDL_UnlockMutex(q->mutex);
394 static inline void fill_rectangle(SDL_Surface *screen,
395 int x, int y, int w, int h, int color)
402 SDL_FillRect(screen, &rect, color);
405 #define ALPHA_BLEND(a, oldp, newp, s)\
406 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
408 #define RGBA_IN(r, g, b, a, s)\
410 unsigned int v = ((const uint32_t *)(s))[0];\
411 a = (v >> 24) & 0xff;\
412 r = (v >> 16) & 0xff;\
413 g = (v >> 8) & 0xff;\
417 #define YUVA_IN(y, u, v, a, s, pal)\
419 unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
420 a = (val >> 24) & 0xff;\
421 y = (val >> 16) & 0xff;\
422 u = (val >> 8) & 0xff;\
426 #define YUVA_OUT(d, y, u, v, a)\
428 ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
434 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
436 int wrap, wrap3, width2, skip2;
437 int y, u, v, a, u1, v1, a1, w, h;
438 uint8_t *lum, *cb, *cr;
441 int dstx, dsty, dstw, dsth;
443 dstw = av_clip(rect->w, 0, imgw);
444 dsth = av_clip(rect->h, 0, imgh);
445 dstx = av_clip(rect->x, 0, imgw - dstw);
446 dsty = av_clip(rect->y, 0, imgh - dsth);
447 lum = dst->data[0] + dsty * dst->linesize[0];
448 cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
449 cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
451 width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
453 wrap = dst->linesize[0];
454 wrap3 = rect->pict.linesize[0];
455 p = rect->pict.data[0];
456 pal = (const uint32_t *)rect->pict.data[1]; /* Now in YCrCb! */
464 YUVA_IN(y, u, v, a, p, pal);
465 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
466 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
467 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
473 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
474 YUVA_IN(y, u, v, a, p, pal);
478 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
480 YUVA_IN(y, u, v, a, p + BPP, pal);
484 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
485 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
486 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
493 YUVA_IN(y, u, v, a, p, pal);
494 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
495 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
496 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
500 p += wrap3 - dstw * BPP;
501 lum += wrap - dstw - dstx;
502 cb += dst->linesize[1] - width2 - skip2;
503 cr += dst->linesize[2] - width2 - skip2;
505 for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
511 YUVA_IN(y, u, v, a, p, pal);
515 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
518 YUVA_IN(y, u, v, a, p, pal);
522 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
523 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
524 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
530 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
531 YUVA_IN(y, u, v, a, p, pal);
535 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
537 YUVA_IN(y, u, v, a, p + BPP, pal);
541 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
545 YUVA_IN(y, u, v, a, p, pal);
549 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
551 YUVA_IN(y, u, v, a, p + BPP, pal);
555 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
557 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
558 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
562 p += -wrap3 + 2 * BPP;
566 YUVA_IN(y, u, v, a, p, pal);
570 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
573 YUVA_IN(y, u, v, a, p, pal);
577 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
578 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
579 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
585 p += wrap3 + (wrap3 - dstw * BPP);
586 lum += wrap + (wrap - dstw - dstx);
587 cb += dst->linesize[1] - width2 - skip2;
588 cr += dst->linesize[2] - width2 - skip2;
590 /* handle odd height */
597 YUVA_IN(y, u, v, a, p, pal);
598 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
599 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
600 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
606 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
607 YUVA_IN(y, u, v, a, p, pal);
611 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
613 YUVA_IN(y, u, v, a, p + BPP, pal);
617 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
618 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
619 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
626 YUVA_IN(y, u, v, a, p, pal);
627 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
628 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
629 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
634 static void free_subpicture(SubPicture *sp)
636 avsubtitle_free(&sp->sub);
639 static void video_image_display(VideoState *is)
645 int width, height, x, y;
649 vp = &is->pictq[is->pictq_rindex];
655 aspect_ratio = av_q2d(vp->sar);
658 /* XXX: use variable in the frame */
659 if (is->video_st->sample_aspect_ratio.num)
660 aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
661 else if (is->video_st->codec->sample_aspect_ratio.num)
662 aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
666 if (aspect_ratio <= 0.0)
668 aspect_ratio *= (float)vp->width / (float)vp->height;
672 if (is->subpq_size > 0)
674 sp = &is->subpq[is->subpq_rindex];
676 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
678 SDL_LockYUVOverlay (vp->bmp);
680 pict.data[0] = vp->bmp->pixels[0];
681 pict.data[1] = vp->bmp->pixels[2];
682 pict.data[2] = vp->bmp->pixels[1];
684 pict.linesize[0] = vp->bmp->pitches[0];
685 pict.linesize[1] = vp->bmp->pitches[2];
686 pict.linesize[2] = vp->bmp->pitches[1];
688 for (i = 0; i < sp->sub.num_rects; i++)
689 blend_subrect(&pict, sp->sub.rects[i],
690 vp->bmp->w, vp->bmp->h);
692 SDL_UnlockYUVOverlay (vp->bmp);
698 /* XXX: we suppose the screen has a 1.0 pixel ratio */
700 width = ((int)rint(height * aspect_ratio)) & ~1;
701 if (width > is->width) {
703 height = ((int)rint(width / aspect_ratio)) & ~1;
705 x = (is->width - width) / 2;
706 y = (is->height - height) / 2;
707 is->no_background = 0;
708 rect.x = is->xleft + x;
709 rect.y = is->ytop + y;
712 SDL_DisplayYUVOverlay(vp->bmp, &rect);
716 /* get the current audio output buffer size, in samples. With SDL, we
717 cannot have a precise information */
718 static int audio_write_get_buf_size(VideoState *is)
720 return is->audio_buf_size - is->audio_buf_index;
723 static inline int compute_mod(int a, int b)
732 static void video_audio_display(VideoState *s)
734 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
735 int ch, channels, h, h2, bgcolor, fgcolor;
737 int rdft_bits, nb_freq;
739 for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
741 nb_freq = 1 << (rdft_bits - 1);
743 /* compute display index : center on currently output samples */
744 channels = s->sdl_channels;
745 nb_display_channels = channels;
747 int data_used = s->show_audio == 1 ? s->width : (2 * nb_freq);
749 delay = audio_write_get_buf_size(s);
752 /* to be more precise, we take into account the time spent since
753 the last buffer computation */
754 if (audio_callback_time) {
755 time_diff = av_gettime() - audio_callback_time;
756 delay -= (time_diff * s->sdl_sample_rate) / 1000000;
759 delay += 2 * data_used;
760 if (delay < data_used)
763 i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
764 if (s->show_audio == 1) {
766 for (i = 0; i < 1000; i += channels) {
767 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
768 int a = s->sample_array[idx];
769 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
770 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
771 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
773 if (h < score && (b ^ c) < 0) {
780 s->last_i_start = i_start;
782 i_start = s->last_i_start;
785 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
786 if (s->show_audio == 1) {
787 fill_rectangle(screen,
788 s->xleft, s->ytop, s->width, s->height,
791 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
793 /* total height for one channel */
794 h = s->height / nb_display_channels;
795 /* graph height / 2 */
797 for (ch = 0; ch < nb_display_channels; ch++) {
799 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
800 for (x = 0; x < s->width; x++) {
801 y = (s->sample_array[i] * h2) >> 15;
808 fill_rectangle(screen,
809 s->xleft + x, ys, 1, y,
812 if (i >= SAMPLE_ARRAY_SIZE)
813 i -= SAMPLE_ARRAY_SIZE;
817 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
819 for (ch = 1; ch < nb_display_channels; ch++) {
820 y = s->ytop + ch * h;
821 fill_rectangle(screen,
822 s->xleft, y, s->width, 1,
825 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
827 nb_display_channels= FFMIN(nb_display_channels, 2);
828 if (rdft_bits != s->rdft_bits) {
829 av_rdft_end(s->rdft);
830 av_free(s->rdft_data);
831 s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
832 s->rdft_bits = rdft_bits;
833 s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
837 for (ch = 0; ch < nb_display_channels; ch++) {
838 data[ch] = s->rdft_data + 2 * nb_freq * ch;
840 for (x = 0; x < 2 * nb_freq; x++) {
841 double w = (x-nb_freq) * (1.0 / nb_freq);
842 data[ch][x] = s->sample_array[i] * (1.0 - w * w);
844 if (i >= SAMPLE_ARRAY_SIZE)
845 i -= SAMPLE_ARRAY_SIZE;
847 av_rdft_calc(s->rdft, data[ch]);
849 /* Least efficient way to do this, we should of course
850 * directly access it but it is more than fast enough. */
851 for (y = 0; y < s->height; y++) {
852 double w = 1 / sqrt(nb_freq);
853 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]));
854 int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
855 + data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
858 fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
860 fill_rectangle(screen,
861 s->xpos, s->height-y, 1, 1,
865 SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
867 if (s->xpos >= s->width)
872 static int video_open(VideoState *is)
874 int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
877 if (is_full_screen) flags |= SDL_FULLSCREEN;
878 else flags |= SDL_RESIZABLE;
880 if (is_full_screen && fs_screen_width) {
882 h = fs_screen_height;
883 } else if (!is_full_screen && screen_width) {
887 } else if (is->out_video_filter && is->out_video_filter->inputs[0]) {
888 w = is->out_video_filter->inputs[0]->w;
889 h = is->out_video_filter->inputs[0]->h;
891 } else if (is->video_st && is->video_st->codec->width) {
892 w = is->video_st->codec->width;
893 h = is->video_st->codec->height;
899 if (screen && is->width == screen->w && screen->w == w
900 && is->height== screen->h && screen->h == h)
903 #if defined(__APPLE__) && !SDL_VERSION_ATLEAST(1, 2, 14)
904 /* setting bits_per_pixel = 0 or 32 causes blank video on OS X and older SDL */
905 screen = SDL_SetVideoMode(w, h, 24, flags);
907 screen = SDL_SetVideoMode(w, h, 0, flags);
910 fprintf(stderr, "SDL: could not set video mode - exiting\n");
914 window_title = input_filename;
915 SDL_WM_SetCaption(window_title, window_title);
917 is->width = screen->w;
918 is->height = screen->h;
923 /* display the current picture, if any */
924 static void video_display(VideoState *is)
927 video_open(cur_stream);
928 if (is->audio_st && is->show_audio)
929 video_audio_display(is);
930 else if (is->video_st)
931 video_image_display(is);
934 static int refresh_thread(void *opaque)
936 VideoState *is= opaque;
937 while (!is->abort_request) {
939 event.type = FF_REFRESH_EVENT;
940 event.user.data1 = opaque;
943 SDL_PushEvent(&event);
945 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
950 /* get the current audio clock value */
951 static double get_audio_clock(VideoState *is)
954 int hw_buf_size, bytes_per_sec;
955 pts = is->audio_clock;
956 hw_buf_size = audio_write_get_buf_size(is);
959 bytes_per_sec = is->sdl_sample_rate * is->sdl_channels *
960 av_get_bytes_per_sample(is->sdl_sample_fmt);
963 pts -= (double)hw_buf_size / bytes_per_sec;
967 /* get the current video clock value */
968 static double get_video_clock(VideoState *is)
971 return is->video_current_pts;
973 return is->video_current_pts_drift + av_gettime() / 1000000.0;
977 /* get the current external clock value */
978 static double get_external_clock(VideoState *is)
982 return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
985 /* get the current master clock value */
986 static double get_master_clock(VideoState *is)
990 if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
992 val = get_video_clock(is);
994 val = get_audio_clock(is);
995 } else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
997 val = get_audio_clock(is);
999 val = get_video_clock(is);
1001 val = get_external_clock(is);
1006 /* seek in the stream */
1007 static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
1009 if (!is->seek_req) {
1012 is->seek_flags &= ~AVSEEK_FLAG_BYTE;
1014 is->seek_flags |= AVSEEK_FLAG_BYTE;
1019 /* pause or resume the video */
1020 static void stream_pause(VideoState *is)
1023 is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
1024 if (is->read_pause_return != AVERROR(ENOSYS)) {
1025 is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
1027 is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
1029 is->paused = !is->paused;
1032 static double compute_target_time(double frame_current_pts, VideoState *is)
1034 double delay, sync_threshold, diff;
1036 /* compute nominal delay */
1037 delay = frame_current_pts - is->frame_last_pts;
1038 if (delay <= 0 || delay >= 10.0) {
1039 /* if incorrect delay, use previous one */
1040 delay = is->frame_last_delay;
1042 is->frame_last_delay = delay;
1044 is->frame_last_pts = frame_current_pts;
1046 /* update delay to follow master synchronisation source */
1047 if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
1048 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1049 /* if video is slave, we try to correct big delays by
1050 duplicating or deleting a frame */
1051 diff = get_video_clock(is) - get_master_clock(is);
1053 /* skip or repeat frame. We take into account the
1054 delay to compute the threshold. I still don't know
1055 if it is the best guess */
1056 sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
1057 if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
1058 if (diff <= -sync_threshold)
1060 else if (diff >= sync_threshold)
1064 is->frame_timer += delay;
1066 av_dlog(NULL, "video: delay=%0.3f pts=%0.3f A-V=%f\n",
1067 delay, frame_current_pts, -diff);
1069 return is->frame_timer;
1072 /* called to display each frame */
1073 static void video_refresh_timer(void *opaque)
1075 VideoState *is = opaque;
1078 SubPicture *sp, *sp2;
1082 if (is->pictq_size == 0) {
1083 // nothing to do, no picture to display in the que
1085 double time = av_gettime() / 1000000.0;
1087 /* dequeue the picture */
1088 vp = &is->pictq[is->pictq_rindex];
1090 if (time < vp->target_clock)
1092 /* update current video pts */
1093 is->video_current_pts = vp->pts;
1094 is->video_current_pts_drift = is->video_current_pts - time;
1095 is->video_current_pos = vp->pos;
1096 if (is->pictq_size > 1) {
1097 VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
1098 assert(nextvp->target_clock >= vp->target_clock);
1099 next_target= nextvp->target_clock;
1101 next_target = vp->target_clock + is->video_clock - vp->pts; // FIXME pass durations cleanly
1103 if (framedrop && time > next_target) {
1104 is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
1105 if (is->pictq_size > 1 || time > next_target + 0.5) {
1106 /* update queue size and signal for next picture */
1107 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1108 is->pictq_rindex = 0;
1110 SDL_LockMutex(is->pictq_mutex);
1112 SDL_CondSignal(is->pictq_cond);
1113 SDL_UnlockMutex(is->pictq_mutex);
1118 if (is->subtitle_st) {
1119 if (is->subtitle_stream_changed) {
1120 SDL_LockMutex(is->subpq_mutex);
1122 while (is->subpq_size) {
1123 free_subpicture(&is->subpq[is->subpq_rindex]);
1125 /* update queue size and signal for next picture */
1126 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1127 is->subpq_rindex = 0;
1131 is->subtitle_stream_changed = 0;
1133 SDL_CondSignal(is->subpq_cond);
1134 SDL_UnlockMutex(is->subpq_mutex);
1136 if (is->subpq_size > 0) {
1137 sp = &is->subpq[is->subpq_rindex];
1139 if (is->subpq_size > 1)
1140 sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
1144 if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
1145 || (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
1147 free_subpicture(sp);
1149 /* update queue size and signal for next picture */
1150 if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
1151 is->subpq_rindex = 0;
1153 SDL_LockMutex(is->subpq_mutex);
1155 SDL_CondSignal(is->subpq_cond);
1156 SDL_UnlockMutex(is->subpq_mutex);
1162 /* display picture */
1163 if (!display_disable)
1166 /* update queue size and signal for next picture */
1167 if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
1168 is->pictq_rindex = 0;
1170 SDL_LockMutex(is->pictq_mutex);
1172 SDL_CondSignal(is->pictq_cond);
1173 SDL_UnlockMutex(is->pictq_mutex);
1175 } else if (is->audio_st) {
1176 /* draw the next audio frame */
1178 /* if only audio stream, then display the audio bars (better
1179 than nothing, just to test the implementation */
1181 /* display picture */
1182 if (!display_disable)
1186 static int64_t last_time;
1188 int aqsize, vqsize, sqsize;
1191 cur_time = av_gettime();
1192 if (!last_time || (cur_time - last_time) >= 30000) {
1197 aqsize = is->audioq.size;
1199 vqsize = is->videoq.size;
1200 if (is->subtitle_st)
1201 sqsize = is->subtitleq.size;
1203 if (is->audio_st && is->video_st)
1204 av_diff = get_audio_clock(is) - get_video_clock(is);
1205 printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64" \r",
1206 get_master_clock(is), av_diff, FFMAX(is->skip_frames - 1, 0), aqsize / 1024,
1207 vqsize / 1024, sqsize, is->pts_ctx.num_faulty_dts, is->pts_ctx.num_faulty_pts);
1209 last_time = cur_time;
1214 static void stream_close(VideoState *is)
1218 /* XXX: use a special url_shutdown call to abort parse cleanly */
1219 is->abort_request = 1;
1220 SDL_WaitThread(is->parse_tid, NULL);
1221 SDL_WaitThread(is->refresh_tid, NULL);
1223 /* free all pictures */
1224 for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1227 SDL_FreeYUVOverlay(vp->bmp);
1231 SDL_DestroyMutex(is->pictq_mutex);
1232 SDL_DestroyCond(is->pictq_cond);
1233 SDL_DestroyMutex(is->subpq_mutex);
1234 SDL_DestroyCond(is->subpq_cond);
1235 #if !CONFIG_AVFILTER
1236 if (is->img_convert_ctx)
1237 sws_freeContext(is->img_convert_ctx);
1242 static void do_exit(void)
1245 stream_close(cur_stream);
1249 avformat_network_deinit();
1253 av_log(NULL, AV_LOG_QUIET, "");
1257 /* allocate a picture (needs to do that in main thread to avoid
1258 potential locking problems */
1259 static void alloc_picture(void *opaque)
1261 VideoState *is = opaque;
1264 vp = &is->pictq[is->pictq_windex];
1267 SDL_FreeYUVOverlay(vp->bmp);
1270 vp->width = is->out_video_filter->inputs[0]->w;
1271 vp->height = is->out_video_filter->inputs[0]->h;
1272 vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1274 vp->width = is->video_st->codec->width;
1275 vp->height = is->video_st->codec->height;
1276 vp->pix_fmt = is->video_st->codec->pix_fmt;
1279 vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1282 if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1283 /* SDL allocates a buffer smaller than requested if the video
1284 * overlay hardware is unable to support the requested size. */
1285 fprintf(stderr, "Error: the video system does not support an image\n"
1286 "size of %dx%d pixels. Try using -vf \"scale=w:h\"\n"
1287 "to reduce the image size.\n", vp->width, vp->height );
1291 SDL_LockMutex(is->pictq_mutex);
1293 SDL_CondSignal(is->pictq_cond);
1294 SDL_UnlockMutex(is->pictq_mutex);
1297 /* The 'pts' parameter is the dts of the packet / pts of the frame and
1298 * guessed if not known. */
1299 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos)
1305 int dst_pix_fmt = AV_PIX_FMT_YUV420P;
1307 /* wait until we have space to put a new picture */
1308 SDL_LockMutex(is->pictq_mutex);
1310 if (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1311 is->skip_frames = FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0 - FRAME_SKIP_FACTOR));
1313 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1314 !is->videoq.abort_request) {
1315 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1317 SDL_UnlockMutex(is->pictq_mutex);
1319 if (is->videoq.abort_request)
1322 vp = &is->pictq[is->pictq_windex];
1324 /* alloc or resize hardware picture buffer */
1325 if (!vp->bmp || vp->reallocate ||
1327 vp->width != is->out_video_filter->inputs[0]->w ||
1328 vp->height != is->out_video_filter->inputs[0]->h) {
1330 vp->width != is->video_st->codec->width ||
1331 vp->height != is->video_st->codec->height) {
1338 /* the allocation must be done in the main thread to avoid
1340 event.type = FF_ALLOC_EVENT;
1341 event.user.data1 = is;
1342 SDL_PushEvent(&event);
1344 /* wait until the picture is allocated */
1345 SDL_LockMutex(is->pictq_mutex);
1346 while (!vp->allocated && !is->videoq.abort_request) {
1347 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1349 SDL_UnlockMutex(is->pictq_mutex);
1351 if (is->videoq.abort_request)
1355 /* if the frame is not skipped, then display it */
1357 AVPicture pict = { { 0 } };
1359 /* get a pointer on the bitmap */
1360 SDL_LockYUVOverlay (vp->bmp);
1362 pict.data[0] = vp->bmp->pixels[0];
1363 pict.data[1] = vp->bmp->pixels[2];
1364 pict.data[2] = vp->bmp->pixels[1];
1366 pict.linesize[0] = vp->bmp->pitches[0];
1367 pict.linesize[1] = vp->bmp->pitches[2];
1368 pict.linesize[2] = vp->bmp->pitches[1];
1371 pict_src.data[0] = src_frame->data[0];
1372 pict_src.data[1] = src_frame->data[1];
1373 pict_src.data[2] = src_frame->data[2];
1375 pict_src.linesize[0] = src_frame->linesize[0];
1376 pict_src.linesize[1] = src_frame->linesize[1];
1377 pict_src.linesize[2] = src_frame->linesize[2];
1379 // FIXME use direct rendering
1380 av_picture_copy(&pict, &pict_src,
1381 vp->pix_fmt, vp->width, vp->height);
1383 av_opt_get_int(sws_opts, "sws_flags", 0, &sws_flags);
1384 is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1385 vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1386 dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1387 if (is->img_convert_ctx == NULL) {
1388 fprintf(stderr, "Cannot initialize the conversion context\n");
1391 sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1392 0, vp->height, pict.data, pict.linesize);
1394 /* update the bitmap content */
1395 SDL_UnlockYUVOverlay(vp->bmp);
1400 /* now we can update the picture count */
1401 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1402 is->pictq_windex = 0;
1403 SDL_LockMutex(is->pictq_mutex);
1404 vp->target_clock = compute_target_time(vp->pts, is);
1407 SDL_UnlockMutex(is->pictq_mutex);
1412 /* Compute the exact PTS for the picture if it is omitted in the stream.
1413 * The 'pts1' parameter is the dts of the packet / pts of the frame. */
1414 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1416 double frame_delay, pts;
1422 /* update video clock with pts, if present */
1423 is->video_clock = pts;
1425 pts = is->video_clock;
1427 /* update video clock for next frame */
1428 frame_delay = av_q2d(is->video_st->codec->time_base);
1429 /* for MPEG2, the frame can be repeated, so we update the
1430 clock accordingly */
1431 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1432 is->video_clock += frame_delay;
1434 ret = queue_picture(is, src_frame, pts, pos);
1435 av_frame_unref(src_frame);
1439 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1443 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1446 if (pkt->data == flush_pkt.data) {
1447 avcodec_flush_buffers(is->video_st->codec);
1449 SDL_LockMutex(is->pictq_mutex);
1450 // Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1451 for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1452 is->pictq[i].target_clock= 0;
1454 while (is->pictq_size && !is->videoq.abort_request) {
1455 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1457 is->video_current_pos = -1;
1458 SDL_UnlockMutex(is->pictq_mutex);
1460 init_pts_correction(&is->pts_ctx);
1461 is->frame_last_pts = AV_NOPTS_VALUE;
1462 is->frame_last_delay = 0;
1463 is->frame_timer = (double)av_gettime() / 1000000.0;
1464 is->skip_frames = 1;
1465 is->skip_frames_index = 0;
1469 avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt);
1472 if (decoder_reorder_pts == -1) {
1473 *pts = guess_correct_pts(&is->pts_ctx, frame->pkt_pts, frame->pkt_dts);
1474 } else if (decoder_reorder_pts) {
1475 *pts = frame->pkt_pts;
1477 *pts = frame->pkt_dts;
1480 if (*pts == AV_NOPTS_VALUE) {
1483 if (is->video_st->sample_aspect_ratio.num) {
1484 frame->sample_aspect_ratio = is->video_st->sample_aspect_ratio;
1487 is->skip_frames_index += 1;
1488 if (is->skip_frames_index >= is->skip_frames) {
1489 is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1492 av_frame_unref(frame);
1498 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1500 char sws_flags_str[128];
1501 char buffersrc_args[256];
1503 AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_format;
1504 AVCodecContext *codec = is->video_st->codec;
1506 snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%"PRId64, sws_flags);
1507 graph->scale_sws_opts = av_strdup(sws_flags_str);
1509 snprintf(buffersrc_args, sizeof(buffersrc_args), "%d:%d:%d:%d:%d:%d:%d",
1510 codec->width, codec->height, codec->pix_fmt,
1511 is->video_st->time_base.num, is->video_st->time_base.den,
1512 codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
1515 if ((ret = avfilter_graph_create_filter(&filt_src,
1516 avfilter_get_by_name("buffer"),
1517 "src", buffersrc_args, NULL,
1520 if ((ret = avfilter_graph_create_filter(&filt_out,
1521 avfilter_get_by_name("buffersink"),
1522 "out", NULL, NULL, graph)) < 0)
1525 if ((ret = avfilter_graph_create_filter(&filt_format,
1526 avfilter_get_by_name("format"),
1527 "format", "yuv420p", NULL, graph)) < 0)
1529 if ((ret = avfilter_link(filt_format, 0, filt_out, 0)) < 0)
1534 AVFilterInOut *outputs = avfilter_inout_alloc();
1535 AVFilterInOut *inputs = avfilter_inout_alloc();
1537 outputs->name = av_strdup("in");
1538 outputs->filter_ctx = filt_src;
1539 outputs->pad_idx = 0;
1540 outputs->next = NULL;
1542 inputs->name = av_strdup("out");
1543 inputs->filter_ctx = filt_format;
1544 inputs->pad_idx = 0;
1545 inputs->next = NULL;
1547 if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
1550 if ((ret = avfilter_link(filt_src, 0, filt_format, 0)) < 0)
1554 if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1557 is->in_video_filter = filt_src;
1558 is->out_video_filter = filt_out;
1563 #endif /* CONFIG_AVFILTER */
1565 static int video_thread(void *arg)
1567 AVPacket pkt = { 0 };
1568 VideoState *is = arg;
1569 AVFrame *frame = av_frame_alloc();
1575 AVFilterGraph *graph = avfilter_graph_alloc();
1576 AVFilterContext *filt_out = NULL, *filt_in = NULL;
1577 int last_w = is->video_st->codec->width;
1578 int last_h = is->video_st->codec->height;
1580 if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1582 filt_in = is->in_video_filter;
1583 filt_out = is->out_video_filter;
1590 while (is->paused && !is->videoq.abort_request)
1593 av_free_packet(&pkt);
1595 ret = get_video_frame(is, frame, &pts_int, &pkt);
1603 if ( last_w != is->video_st->codec->width
1604 || last_h != is->video_st->codec->height) {
1605 av_dlog(NULL, "Changing size %dx%d -> %dx%d\n", last_w, last_h,
1606 is->video_st->codec->width, is->video_st->codec->height);
1607 avfilter_graph_free(&graph);
1608 graph = avfilter_graph_alloc();
1609 if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1611 filt_in = is->in_video_filter;
1612 filt_out = is->out_video_filter;
1613 last_w = is->video_st->codec->width;
1614 last_h = is->video_st->codec->height;
1617 frame->pts = pts_int;
1618 ret = av_buffersrc_add_frame(filt_in, frame);
1623 ret = av_buffersink_get_frame(filt_out, frame);
1629 pts_int = frame->pts;
1630 tb = filt_out->inputs[0]->time_base;
1631 if (av_cmp_q(tb, is->video_st->time_base)) {
1632 av_unused int64_t pts1 = pts_int;
1633 pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1634 av_dlog(NULL, "video_thread(): "
1635 "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1636 tb.num, tb.den, pts1,
1637 is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1639 pts = pts_int * av_q2d(is->video_st->time_base);
1640 ret = output_picture2(is, frame, pts, 0);
1643 pts = pts_int * av_q2d(is->video_st->time_base);
1644 ret = output_picture2(is, frame, pts, pkt.pos);
1653 stream_pause(cur_stream);
1657 av_freep(&vfilters);
1658 avfilter_graph_free(&graph);
1660 av_free_packet(&pkt);
1661 av_frame_free(&frame);
1665 static int subtitle_thread(void *arg)
1667 VideoState *is = arg;
1669 AVPacket pkt1, *pkt = &pkt1;
1673 int r, g, b, y, u, v, a;
1676 while (is->paused && !is->subtitleq.abort_request) {
1679 if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1682 if (pkt->data == flush_pkt.data) {
1683 avcodec_flush_buffers(is->subtitle_st->codec);
1686 SDL_LockMutex(is->subpq_mutex);
1687 while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1688 !is->subtitleq.abort_request) {
1689 SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1691 SDL_UnlockMutex(is->subpq_mutex);
1693 if (is->subtitleq.abort_request)
1696 sp = &is->subpq[is->subpq_windex];
1698 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1699 this packet, if any */
1701 if (pkt->pts != AV_NOPTS_VALUE)
1702 pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
1704 avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1705 &got_subtitle, pkt);
1707 if (got_subtitle && sp->sub.format == 0) {
1710 for (i = 0; i < sp->sub.num_rects; i++)
1712 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1714 RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1715 y = RGB_TO_Y_CCIR(r, g, b);
1716 u = RGB_TO_U_CCIR(r, g, b, 0);
1717 v = RGB_TO_V_CCIR(r, g, b, 0);
1718 YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1722 /* now we can update the picture count */
1723 if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1724 is->subpq_windex = 0;
1725 SDL_LockMutex(is->subpq_mutex);
1727 SDL_UnlockMutex(is->subpq_mutex);
1729 av_free_packet(pkt);
1734 /* copy samples for viewing in editor window */
1735 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1739 size = samples_size / sizeof(short);
1741 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1744 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1746 is->sample_array_index += len;
1747 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1748 is->sample_array_index = 0;
1753 /* return the new audio buffer size (samples can be added or deleted
1754 to get better sync if video or external master clock) */
1755 static int synchronize_audio(VideoState *is, short *samples,
1756 int samples_size1, double pts)
1758 int n, samples_size;
1761 n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
1762 samples_size = samples_size1;
1764 /* if not master, then we try to remove or add samples to correct the clock */
1765 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1766 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1767 double diff, avg_diff;
1768 int wanted_size, min_size, max_size, nb_samples;
1770 ref_clock = get_master_clock(is);
1771 diff = get_audio_clock(is) - ref_clock;
1773 if (diff < AV_NOSYNC_THRESHOLD) {
1774 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1775 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1776 /* not enough measures to have a correct estimate */
1777 is->audio_diff_avg_count++;
1779 /* estimate the A-V difference */
1780 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1782 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1783 wanted_size = samples_size + ((int)(diff * is->sdl_sample_rate) * n);
1784 nb_samples = samples_size / n;
1786 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1787 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1788 if (wanted_size < min_size)
1789 wanted_size = min_size;
1790 else if (wanted_size > max_size)
1791 wanted_size = max_size;
1793 /* add or remove samples to correction the synchro */
1794 if (wanted_size < samples_size) {
1795 /* remove samples */
1796 samples_size = wanted_size;
1797 } else if (wanted_size > samples_size) {
1798 uint8_t *samples_end, *q;
1802 nb = (samples_size - wanted_size);
1803 samples_end = (uint8_t *)samples + samples_size - n;
1804 q = samples_end + n;
1806 memcpy(q, samples_end, n);
1810 samples_size = wanted_size;
1813 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1814 diff, avg_diff, samples_size - samples_size1,
1815 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1818 /* too big difference : may be initial PTS errors, so
1820 is->audio_diff_avg_count = 0;
1821 is->audio_diff_cum = 0;
1825 return samples_size;
1828 /* decode one audio frame and returns its uncompressed size */
1829 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1831 AVPacket *pkt_temp = &is->audio_pkt_temp;
1832 AVPacket *pkt = &is->audio_pkt;
1833 AVCodecContext *dec = is->audio_st->codec;
1834 int n, len1, data_size, got_frame;
1837 int flush_complete = 0;
1840 /* NOTE: the audio packet can contain several frames */
1841 while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
1842 int resample_changed, audio_resample;
1845 if (!(is->frame = avcodec_alloc_frame()))
1846 return AVERROR(ENOMEM);
1848 avcodec_get_frame_defaults(is->frame);
1853 len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
1855 /* if error, we skip the frame */
1860 pkt_temp->data += len1;
1861 pkt_temp->size -= len1;
1864 /* stop sending empty packets if the decoder is finished */
1865 if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
1869 data_size = av_samples_get_buffer_size(NULL, dec->channels,
1870 is->frame->nb_samples,
1871 is->frame->format, 1);
1873 audio_resample = is->frame->format != is->sdl_sample_fmt ||
1874 is->frame->channel_layout != is->sdl_channel_layout ||
1875 is->frame->sample_rate != is->sdl_sample_rate;
1877 resample_changed = is->frame->format != is->resample_sample_fmt ||
1878 is->frame->channel_layout != is->resample_channel_layout ||
1879 is->frame->sample_rate != is->resample_sample_rate;
1881 if ((!is->avr && audio_resample) || resample_changed) {
1884 avresample_close(is->avr);
1885 else if (audio_resample) {
1886 is->avr = avresample_alloc_context();
1888 fprintf(stderr, "error allocating AVAudioResampleContext\n");
1892 if (audio_resample) {
1893 av_opt_set_int(is->avr, "in_channel_layout", is->frame->channel_layout, 0);
1894 av_opt_set_int(is->avr, "in_sample_fmt", is->frame->format, 0);
1895 av_opt_set_int(is->avr, "in_sample_rate", is->frame->sample_rate, 0);
1896 av_opt_set_int(is->avr, "out_channel_layout", is->sdl_channel_layout, 0);
1897 av_opt_set_int(is->avr, "out_sample_fmt", is->sdl_sample_fmt, 0);
1898 av_opt_set_int(is->avr, "out_sample_rate", is->sdl_sample_rate, 0);
1900 if ((ret = avresample_open(is->avr)) < 0) {
1901 fprintf(stderr, "error initializing libavresample\n");
1905 is->resample_sample_fmt = is->frame->format;
1906 is->resample_channel_layout = is->frame->channel_layout;
1907 is->resample_sample_rate = is->frame->sample_rate;
1910 if (audio_resample) {
1912 int out_samples, out_size, out_linesize;
1913 int osize = av_get_bytes_per_sample(is->sdl_sample_fmt);
1914 int nb_samples = is->frame->nb_samples;
1916 out_size = av_samples_get_buffer_size(&out_linesize,
1919 is->sdl_sample_fmt, 0);
1920 tmp_out = av_realloc(is->audio_buf1, out_size);
1922 return AVERROR(ENOMEM);
1923 is->audio_buf1 = tmp_out;
1925 out_samples = avresample_convert(is->avr,
1927 out_linesize, nb_samples,
1929 is->frame->linesize[0],
1930 is->frame->nb_samples);
1931 if (out_samples < 0) {
1932 fprintf(stderr, "avresample_convert() failed\n");
1935 is->audio_buf = is->audio_buf1;
1936 data_size = out_samples * osize * is->sdl_channels;
1938 is->audio_buf = is->frame->data[0];
1941 /* if no pts, then compute it */
1942 pts = is->audio_clock;
1944 n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
1945 is->audio_clock += (double)data_size /
1946 (double)(n * is->sdl_sample_rate);
1949 static double last_clock;
1950 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1951 is->audio_clock - last_clock,
1952 is->audio_clock, pts);
1953 last_clock = is->audio_clock;
1959 /* free the current packet */
1961 av_free_packet(pkt);
1962 memset(pkt_temp, 0, sizeof(*pkt_temp));
1964 if (is->paused || is->audioq.abort_request) {
1968 /* read next packet */
1969 if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
1972 if (pkt->data == flush_pkt.data) {
1973 avcodec_flush_buffers(dec);
1979 /* if update the audio clock with the pts */
1980 if (pkt->pts != AV_NOPTS_VALUE) {
1981 is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
1986 /* prepare a new audio buffer */
1987 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
1989 VideoState *is = opaque;
1990 int audio_size, len1;
1993 audio_callback_time = av_gettime();
1996 if (is->audio_buf_index >= is->audio_buf_size) {
1997 audio_size = audio_decode_frame(is, &pts);
1998 if (audio_size < 0) {
1999 /* if error, just output silence */
2000 is->audio_buf = is->silence_buf;
2001 is->audio_buf_size = sizeof(is->silence_buf);
2004 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2005 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2007 is->audio_buf_size = audio_size;
2009 is->audio_buf_index = 0;
2011 len1 = is->audio_buf_size - is->audio_buf_index;
2014 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2017 is->audio_buf_index += len1;
2021 /* open a given stream. Return 0 if OK */
2022 static int stream_component_open(VideoState *is, int stream_index)
2024 AVFormatContext *ic = is->ic;
2025 AVCodecContext *avctx;
2027 SDL_AudioSpec wanted_spec, spec;
2029 AVDictionaryEntry *t = NULL;
2031 if (stream_index < 0 || stream_index >= ic->nb_streams)
2033 avctx = ic->streams[stream_index]->codec;
2035 opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], NULL);
2037 codec = avcodec_find_decoder(avctx->codec_id);
2038 avctx->workaround_bugs = workaround_bugs;
2039 avctx->idct_algo = idct;
2040 avctx->skip_frame = skip_frame;
2041 avctx->skip_idct = skip_idct;
2042 avctx->skip_loop_filter = skip_loop_filter;
2043 avctx->error_concealment = error_concealment;
2045 if (fast) avctx->flags2 |= CODEC_FLAG2_FAST;
2047 if (!av_dict_get(opts, "threads", NULL, 0))
2048 av_dict_set(&opts, "threads", "auto", 0);
2049 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO)
2050 av_dict_set(&opts, "refcounted_frames", "1", 0);
2052 avcodec_open2(avctx, codec, &opts) < 0)
2054 if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2055 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2056 return AVERROR_OPTION_NOT_FOUND;
2059 /* prepare audio output */
2060 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2061 is->sdl_sample_rate = avctx->sample_rate;
2063 if (!avctx->channel_layout)
2064 avctx->channel_layout = av_get_default_channel_layout(avctx->channels);
2065 if (!avctx->channel_layout) {
2066 fprintf(stderr, "unable to guess channel layout\n");
2069 if (avctx->channels == 1)
2070 is->sdl_channel_layout = AV_CH_LAYOUT_MONO;
2072 is->sdl_channel_layout = AV_CH_LAYOUT_STEREO;
2073 is->sdl_channels = av_get_channel_layout_nb_channels(is->sdl_channel_layout);
2075 wanted_spec.format = AUDIO_S16SYS;
2076 wanted_spec.freq = is->sdl_sample_rate;
2077 wanted_spec.channels = is->sdl_channels;
2078 wanted_spec.silence = 0;
2079 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2080 wanted_spec.callback = sdl_audio_callback;
2081 wanted_spec.userdata = is;
2082 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2083 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2086 is->audio_hw_buf_size = spec.size;
2087 is->sdl_sample_fmt = AV_SAMPLE_FMT_S16;
2088 is->resample_sample_fmt = is->sdl_sample_fmt;
2089 is->resample_channel_layout = avctx->channel_layout;
2090 is->resample_sample_rate = avctx->sample_rate;
2093 ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2094 switch (avctx->codec_type) {
2095 case AVMEDIA_TYPE_AUDIO:
2096 is->audio_stream = stream_index;
2097 is->audio_st = ic->streams[stream_index];
2098 is->audio_buf_size = 0;
2099 is->audio_buf_index = 0;
2101 /* init averaging filter */
2102 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2103 is->audio_diff_avg_count = 0;
2104 /* since we do not have a precise anough audio fifo fullness,
2105 we correct audio sync only if larger than this threshold */
2106 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2108 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2109 packet_queue_init(&is->audioq);
2112 case AVMEDIA_TYPE_VIDEO:
2113 is->video_stream = stream_index;
2114 is->video_st = ic->streams[stream_index];
2116 packet_queue_init(&is->videoq);
2117 is->video_tid = SDL_CreateThread(video_thread, is);
2119 case AVMEDIA_TYPE_SUBTITLE:
2120 is->subtitle_stream = stream_index;
2121 is->subtitle_st = ic->streams[stream_index];
2122 packet_queue_init(&is->subtitleq);
2124 is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2132 static void stream_component_close(VideoState *is, int stream_index)
2134 AVFormatContext *ic = is->ic;
2135 AVCodecContext *avctx;
2137 if (stream_index < 0 || stream_index >= ic->nb_streams)
2139 avctx = ic->streams[stream_index]->codec;
2141 switch (avctx->codec_type) {
2142 case AVMEDIA_TYPE_AUDIO:
2143 packet_queue_abort(&is->audioq);
2147 packet_queue_end(&is->audioq);
2148 av_free_packet(&is->audio_pkt);
2150 avresample_free(&is->avr);
2151 av_freep(&is->audio_buf1);
2152 is->audio_buf = NULL;
2153 avcodec_free_frame(&is->frame);
2156 av_rdft_end(is->rdft);
2157 av_freep(&is->rdft_data);
2162 case AVMEDIA_TYPE_VIDEO:
2163 packet_queue_abort(&is->videoq);
2165 /* note: we also signal this mutex to make sure we deblock the
2166 video thread in all cases */
2167 SDL_LockMutex(is->pictq_mutex);
2168 SDL_CondSignal(is->pictq_cond);
2169 SDL_UnlockMutex(is->pictq_mutex);
2171 SDL_WaitThread(is->video_tid, NULL);
2173 packet_queue_end(&is->videoq);
2175 case AVMEDIA_TYPE_SUBTITLE:
2176 packet_queue_abort(&is->subtitleq);
2178 /* note: we also signal this mutex to make sure we deblock the
2179 video thread in all cases */
2180 SDL_LockMutex(is->subpq_mutex);
2181 is->subtitle_stream_changed = 1;
2183 SDL_CondSignal(is->subpq_cond);
2184 SDL_UnlockMutex(is->subpq_mutex);
2186 SDL_WaitThread(is->subtitle_tid, NULL);
2188 packet_queue_end(&is->subtitleq);
2194 ic->streams[stream_index]->discard = AVDISCARD_ALL;
2195 avcodec_close(avctx);
2196 switch (avctx->codec_type) {
2197 case AVMEDIA_TYPE_AUDIO:
2198 is->audio_st = NULL;
2199 is->audio_stream = -1;
2201 case AVMEDIA_TYPE_VIDEO:
2202 is->video_st = NULL;
2203 is->video_stream = -1;
2205 case AVMEDIA_TYPE_SUBTITLE:
2206 is->subtitle_st = NULL;
2207 is->subtitle_stream = -1;
2214 /* since we have only one decoding thread, we can use a global
2215 variable instead of a thread local variable */
2216 static VideoState *global_video_state;
2218 static int decode_interrupt_cb(void *ctx)
2220 return global_video_state && global_video_state->abort_request;
2223 /* this thread gets the stream from the disk or the network */
2224 static int decode_thread(void *arg)
2226 VideoState *is = arg;
2227 AVFormatContext *ic = NULL;
2229 int st_index[AVMEDIA_TYPE_NB];
2230 AVPacket pkt1, *pkt = &pkt1;
2232 int pkt_in_play_range = 0;
2233 AVDictionaryEntry *t;
2234 AVDictionary **opts;
2235 int orig_nb_streams;
2237 memset(st_index, -1, sizeof(st_index));
2238 is->video_stream = -1;
2239 is->audio_stream = -1;
2240 is->subtitle_stream = -1;
2242 global_video_state = is;
2244 ic = avformat_alloc_context();
2245 ic->interrupt_callback.callback = decode_interrupt_cb;
2246 err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2248 print_error(is->filename, err);
2252 if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2253 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2254 ret = AVERROR_OPTION_NOT_FOUND;
2260 ic->flags |= AVFMT_FLAG_GENPTS;
2262 opts = setup_find_stream_info_opts(ic, codec_opts);
2263 orig_nb_streams = ic->nb_streams;
2265 err = avformat_find_stream_info(ic, opts);
2267 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2271 for (i = 0; i < orig_nb_streams; i++)
2272 av_dict_free(&opts[i]);
2276 ic->pb->eof_reached = 0; // FIXME hack, avplay maybe should not use url_feof() to test for the end
2278 if (seek_by_bytes < 0)
2279 seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2281 /* if seeking requested, we execute it */
2282 if (start_time != AV_NOPTS_VALUE) {
2285 timestamp = start_time;
2286 /* add the stream start time */
2287 if (ic->start_time != AV_NOPTS_VALUE)
2288 timestamp += ic->start_time;
2289 ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2291 fprintf(stderr, "%s: could not seek to position %0.3f\n",
2292 is->filename, (double)timestamp / AV_TIME_BASE);
2296 for (i = 0; i < ic->nb_streams; i++)
2297 ic->streams[i]->discard = AVDISCARD_ALL;
2299 st_index[AVMEDIA_TYPE_VIDEO] =
2300 av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2301 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2303 st_index[AVMEDIA_TYPE_AUDIO] =
2304 av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2305 wanted_stream[AVMEDIA_TYPE_AUDIO],
2306 st_index[AVMEDIA_TYPE_VIDEO],
2309 st_index[AVMEDIA_TYPE_SUBTITLE] =
2310 av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2311 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2312 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2313 st_index[AVMEDIA_TYPE_AUDIO] :
2314 st_index[AVMEDIA_TYPE_VIDEO]),
2317 av_dump_format(ic, 0, is->filename, 0);
2320 /* open the streams */
2321 if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2322 stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2326 if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2327 ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2329 is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2331 if (!display_disable)
2335 if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2336 stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2339 if (is->video_stream < 0 && is->audio_stream < 0) {
2340 fprintf(stderr, "%s: could not open codecs\n", is->filename);
2346 if (is->abort_request)
2348 if (is->paused != is->last_paused) {
2349 is->last_paused = is->paused;
2351 is->read_pause_return = av_read_pause(ic);
2355 #if CONFIG_RTSP_DEMUXER
2356 if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2357 /* wait 10 ms to avoid trying to get another packet */
2364 int64_t seek_target = is->seek_pos;
2365 int64_t seek_min = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2366 int64_t seek_max = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2367 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2368 // of the seek_pos/seek_rel variables
2370 ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2372 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2374 if (is->audio_stream >= 0) {
2375 packet_queue_flush(&is->audioq);
2376 packet_queue_put(&is->audioq, &flush_pkt);
2378 if (is->subtitle_stream >= 0) {
2379 packet_queue_flush(&is->subtitleq);
2380 packet_queue_put(&is->subtitleq, &flush_pkt);
2382 if (is->video_stream >= 0) {
2383 packet_queue_flush(&is->videoq);
2384 packet_queue_put(&is->videoq, &flush_pkt);
2391 /* if the queue are full, no need to read more */
2392 if (!infinite_buffer &&
2393 (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2394 || ( (is->audioq .size > MIN_AUDIOQ_SIZE || is->audio_stream < 0)
2395 && (is->videoq .nb_packets > MIN_FRAMES || is->video_stream < 0)
2396 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0)))) {
2402 if (is->video_stream >= 0) {
2403 av_init_packet(pkt);
2406 pkt->stream_index = is->video_stream;
2407 packet_queue_put(&is->videoq, pkt);
2409 if (is->audio_stream >= 0 &&
2410 is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
2411 av_init_packet(pkt);
2414 pkt->stream_index = is->audio_stream;
2415 packet_queue_put(&is->audioq, pkt);
2418 if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2419 if (loop != 1 && (!loop || --loop)) {
2420 stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2421 } else if (autoexit) {
2428 ret = av_read_frame(ic, pkt);
2430 if (ret == AVERROR_EOF || (ic->pb && ic->pb->eof_reached))
2432 if (ic->pb && ic->pb->error)
2434 SDL_Delay(100); /* wait for user event */
2437 /* check if packet is in play range specified by user, then queue, otherwise discard */
2438 pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2439 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2440 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2441 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2442 <= ((double)duration / 1000000);
2443 if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2444 packet_queue_put(&is->audioq, pkt);
2445 } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2446 packet_queue_put(&is->videoq, pkt);
2447 } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2448 packet_queue_put(&is->subtitleq, pkt);
2450 av_free_packet(pkt);
2453 /* wait until the end */
2454 while (!is->abort_request) {
2460 /* disable interrupting */
2461 global_video_state = NULL;
2463 /* close each stream */
2464 if (is->audio_stream >= 0)
2465 stream_component_close(is, is->audio_stream);
2466 if (is->video_stream >= 0)
2467 stream_component_close(is, is->video_stream);
2468 if (is->subtitle_stream >= 0)
2469 stream_component_close(is, is->subtitle_stream);
2471 avformat_close_input(&is->ic);
2477 event.type = FF_QUIT_EVENT;
2478 event.user.data1 = is;
2479 SDL_PushEvent(&event);
2484 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2488 is = av_mallocz(sizeof(VideoState));
2491 av_strlcpy(is->filename, filename, sizeof(is->filename));
2492 is->iformat = iformat;
2496 /* start video display */
2497 is->pictq_mutex = SDL_CreateMutex();
2498 is->pictq_cond = SDL_CreateCond();
2500 is->subpq_mutex = SDL_CreateMutex();
2501 is->subpq_cond = SDL_CreateCond();
2503 is->av_sync_type = av_sync_type;
2504 is->parse_tid = SDL_CreateThread(decode_thread, is);
2505 if (!is->parse_tid) {
2512 static void stream_cycle_channel(VideoState *is, int codec_type)
2514 AVFormatContext *ic = is->ic;
2515 int start_index, stream_index;
2518 if (codec_type == AVMEDIA_TYPE_VIDEO)
2519 start_index = is->video_stream;
2520 else if (codec_type == AVMEDIA_TYPE_AUDIO)
2521 start_index = is->audio_stream;
2523 start_index = is->subtitle_stream;
2524 if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2526 stream_index = start_index;
2528 if (++stream_index >= is->ic->nb_streams)
2530 if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2537 if (stream_index == start_index)
2539 st = ic->streams[stream_index];
2540 if (st->codec->codec_type == codec_type) {
2541 /* check that parameters are OK */
2542 switch (codec_type) {
2543 case AVMEDIA_TYPE_AUDIO:
2544 if (st->codec->sample_rate != 0 &&
2545 st->codec->channels != 0)
2548 case AVMEDIA_TYPE_VIDEO:
2549 case AVMEDIA_TYPE_SUBTITLE:
2557 stream_component_close(is, start_index);
2558 stream_component_open(is, stream_index);
2562 static void toggle_full_screen(void)
2564 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2565 /* OS X needs to empty the picture_queue */
2567 for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
2568 cur_stream->pictq[i].reallocate = 1;
2570 is_full_screen = !is_full_screen;
2571 video_open(cur_stream);
2574 static void toggle_pause(void)
2577 stream_pause(cur_stream);
2581 static void step_to_next_frame(void)
2584 /* if the stream is paused unpause it, then step */
2585 if (cur_stream->paused)
2586 stream_pause(cur_stream);
2591 static void toggle_audio_display(void)
2594 int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2595 cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
2596 fill_rectangle(screen,
2597 cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2599 SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2603 /* handle an event sent by the GUI */
2604 static void event_loop(void)
2607 double incr, pos, frac;
2611 SDL_WaitEvent(&event);
2612 switch (event.type) {
2614 if (exit_on_keydown) {
2618 switch (event.key.keysym.sym) {
2624 toggle_full_screen();
2630 case SDLK_s: // S: Step to next frame
2631 step_to_next_frame();
2635 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2639 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2643 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2646 toggle_audio_display();
2661 if (seek_by_bytes) {
2662 if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2663 pos = cur_stream->video_current_pos;
2664 } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2665 pos = cur_stream->audio_pkt.pos;
2667 pos = avio_tell(cur_stream->ic->pb);
2668 if (cur_stream->ic->bit_rate)
2669 incr *= cur_stream->ic->bit_rate / 8.0;
2673 stream_seek(cur_stream, pos, incr, 1);
2675 pos = get_master_clock(cur_stream);
2677 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2685 case SDL_MOUSEBUTTONDOWN:
2686 if (exit_on_mousedown) {
2690 case SDL_MOUSEMOTION:
2691 if (event.type == SDL_MOUSEBUTTONDOWN) {
2694 if (event.motion.state != SDL_PRESSED)
2699 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2700 uint64_t size = avio_size(cur_stream->ic->pb);
2701 stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2705 int tns, thh, tmm, tss;
2706 tns = cur_stream->ic->duration / 1000000LL;
2708 tmm = (tns % 3600) / 60;
2710 frac = x / cur_stream->width;
2713 mm = (ns % 3600) / 60;
2715 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
2716 hh, mm, ss, thh, tmm, tss);
2717 ts = frac * cur_stream->ic->duration;
2718 if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2719 ts += cur_stream->ic->start_time;
2720 stream_seek(cur_stream, ts, 0, 0);
2724 case SDL_VIDEORESIZE:
2726 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2727 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2728 screen_width = cur_stream->width = event.resize.w;
2729 screen_height = cur_stream->height = event.resize.h;
2736 case FF_ALLOC_EVENT:
2737 video_open(event.user.data1);
2738 alloc_picture(event.user.data1);
2740 case FF_REFRESH_EVENT:
2741 video_refresh_timer(event.user.data1);
2742 cur_stream->refresh = 0;
2750 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
2752 av_log(NULL, AV_LOG_ERROR,
2753 "Option '%s' has been removed, use private format options instead\n", opt);
2754 return AVERROR(EINVAL);
2757 static int opt_width(void *optctx, const char *opt, const char *arg)
2759 screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2763 static int opt_height(void *optctx, const char *opt, const char *arg)
2765 screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2769 static int opt_format(void *optctx, const char *opt, const char *arg)
2771 file_iformat = av_find_input_format(arg);
2772 if (!file_iformat) {
2773 fprintf(stderr, "Unknown input format: %s\n", arg);
2774 return AVERROR(EINVAL);
2779 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
2781 av_log(NULL, AV_LOG_ERROR,
2782 "Option '%s' has been removed, use private format options instead\n", opt);
2783 return AVERROR(EINVAL);
2786 static int opt_sync(void *optctx, const char *opt, const char *arg)
2788 if (!strcmp(arg, "audio"))
2789 av_sync_type = AV_SYNC_AUDIO_MASTER;
2790 else if (!strcmp(arg, "video"))
2791 av_sync_type = AV_SYNC_VIDEO_MASTER;
2792 else if (!strcmp(arg, "ext"))
2793 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2795 fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2801 static int opt_seek(void *optctx, const char *opt, const char *arg)
2803 start_time = parse_time_or_die(opt, arg, 1);
2807 static int opt_duration(void *optctx, const char *opt, const char *arg)
2809 duration = parse_time_or_die(opt, arg, 1);
2813 static const OptionDef options[] = {
2814 #include "cmdutils_common_opts.h"
2815 { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
2816 { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
2817 { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2818 { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
2819 { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
2820 { "vn", OPT_BOOL, { &video_disable }, "disable video" },
2821 { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2822 { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2823 { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2824 { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
2825 { "t", HAS_ARG, { .func_arg = opt_duration }, "play \"duration\" seconds of audio/video", "duration" },
2826 { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2827 { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
2828 { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
2829 { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
2830 { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
2831 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { &workaround_bugs }, "workaround bugs", "" },
2832 { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
2833 { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
2834 { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2835 { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_loop_filter }, "", "" },
2836 { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_frame }, "", "" },
2837 { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_idct }, "", "" },
2838 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { &idct }, "set idct algo", "algo" },
2839 { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { &error_concealment }, "set error concealment options", "bit_mask" },
2840 { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
2841 { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
2842 { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
2843 { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
2844 { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
2845 { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
2846 { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
2847 { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
2849 { "vf", OPT_STRING | HAS_ARG, { &vfilters }, "video filters", "filter list" },
2851 { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
2852 { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { opt_default }, "generic catch all option", "" },
2853 { "i", 0, { NULL }, "avconv compatibility dummy option", ""},
2857 static void show_usage(void)
2859 printf("Simple media player\n");
2860 printf("usage: %s [options] input_file\n", program_name);
2864 void show_help_default(const char *opt, const char *arg)
2866 av_log_set_callback(log_callback_help);
2868 show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
2869 show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
2871 show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2872 show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2873 #if !CONFIG_AVFILTER
2874 show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
2876 printf("\nWhile playing:\n"
2878 "f toggle full screen\n"
2880 "a cycle audio channel\n"
2881 "v cycle video channel\n"
2882 "t cycle subtitle channel\n"
2883 "w show audio waves\n"
2884 "s activate frame-step mode\n"
2885 "left/right seek backward/forward 10 seconds\n"
2886 "down/up seek backward/forward 1 minute\n"
2887 "mouse click seek to percentage in file corresponding to fraction of width\n"
2891 static void opt_input_file(void *optctx, const char *filename)
2893 if (input_filename) {
2894 fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2895 filename, input_filename);
2898 if (!strcmp(filename, "-"))
2900 input_filename = filename;
2903 /* Called from the main */
2904 int main(int argc, char **argv)
2908 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2909 parse_loglevel(argc, argv, options);
2911 /* register all codecs, demux and protocols */
2912 avcodec_register_all();
2914 avdevice_register_all();
2917 avfilter_register_all();
2920 avformat_network_init();
2926 parse_options(NULL, argc, argv, options, opt_input_file);
2928 if (!input_filename) {
2930 fprintf(stderr, "An input file must be specified\n");
2931 fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2935 if (display_disable) {
2938 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
2939 #if !defined(__MINGW32__) && !defined(__APPLE__)
2940 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
2942 if (SDL_Init (flags)) {
2943 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
2947 if (!display_disable) {
2948 const SDL_VideoInfo *vi = SDL_GetVideoInfo();
2949 fs_screen_width = vi->current_w;
2950 fs_screen_height = vi->current_h;
2953 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
2954 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
2955 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
2957 av_init_packet(&flush_pkt);
2958 flush_pkt.data = (uint8_t *)&flush_pkt;
2960 cur_stream = stream_open(input_filename, file_iformat);