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/avfiltergraph.h"
45 # include "libavfilter/buffersink.h"
46 # include "libavfilter/buffersrc.h"
52 #include <SDL_thread.h>
55 #undef main /* We don't want SDL to override our main() */
60 const char program_name[] = "avplay";
61 const int program_birth_year = 2003;
63 #define MAX_QUEUE_SIZE (15 * 1024 * 1024)
64 #define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
67 /* SDL audio buffer size, in samples. Should be small to have precise
68 A/V sync as SDL does not have hardware buffer fullness info. */
69 #define SDL_AUDIO_BUFFER_SIZE 1024
71 /* no AV sync correction is done if below the AV sync threshold */
72 #define AV_SYNC_THRESHOLD 0.01
73 /* no AV correction is done if too big error */
74 #define AV_NOSYNC_THRESHOLD 10.0
76 #define FRAME_SKIP_FACTOR 0.05
78 /* maximum audio speed change to get correct sync */
79 #define SAMPLE_CORRECTION_PERCENT_MAX 10
81 /* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
82 #define AUDIO_DIFF_AVG_NB 20
84 /* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
85 #define SAMPLE_ARRAY_SIZE (2 * 65536)
87 static int sws_flags = SWS_BICUBIC;
89 typedef struct PacketQueue {
90 AVPacketList *first_pkt, *last_pkt;
98 #define VIDEO_PICTURE_QUEUE_SIZE 2
99 #define SUBPICTURE_QUEUE_SIZE 4
101 typedef struct VideoPicture {
102 double pts; ///< presentation time stamp for this picture
103 double target_clock; ///< av_gettime() time at which this should be displayed ideally
104 int64_t pos; ///< byte position in file
106 int width, height; /* source height & width */
109 enum AVPixelFormat pix_fmt;
112 AVFilterBufferRef *picref;
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;
167 enum AVSampleFormat resample_sample_fmt;
168 uint64_t resample_channel_layout;
169 AVAudioResampleContext *avr;
172 int show_audio; /* if true, display audio samples */
173 int16_t sample_array[SAMPLE_ARRAY_SIZE];
174 int sample_array_index;
178 FFTSample *rdft_data;
181 SDL_Thread *subtitle_tid;
183 int subtitle_stream_changed;
184 AVStream *subtitle_st;
185 PacketQueue subtitleq;
186 SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
187 int subpq_size, subpq_rindex, subpq_windex;
188 SDL_mutex *subpq_mutex;
189 SDL_cond *subpq_cond;
192 double frame_last_pts;
193 double frame_last_delay;
194 double video_clock; ///< pts of last decoded frame / predicted pts of next decoded frame
198 double video_current_pts; ///< current displayed pts (different from video_clock if frame fifos are used)
199 double video_current_pts_drift; ///< video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
200 int64_t video_current_pos; ///< current displayed file pos
201 VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
202 int pictq_size, pictq_rindex, pictq_windex;
203 SDL_mutex *pictq_mutex;
204 SDL_cond *pictq_cond;
206 struct SwsContext *img_convert_ctx;
209 // QETimer *video_timer;
211 int width, height, xleft, ytop;
213 PtsCorrectionContext pts_ctx;
216 AVFilterContext *in_video_filter; ///< the first filter in the video chain
217 AVFilterContext *out_video_filter; ///< the last filter in the video chain
219 FrameBuffer *buffer_pool;
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;
248 static int debug = 0;
249 static int debug_mv = 0;
251 static int workaround_bugs = 1;
253 static int genpts = 0;
254 static int idct = FF_IDCT_AUTO;
255 static enum AVDiscard skip_frame = AVDISCARD_DEFAULT;
256 static enum AVDiscard skip_idct = AVDISCARD_DEFAULT;
257 static enum AVDiscard skip_loop_filter = AVDISCARD_DEFAULT;
258 static int error_concealment = 3;
259 static int decoder_reorder_pts = -1;
261 static int exit_on_keydown;
262 static int exit_on_mousedown;
264 static int framedrop = 1;
265 static int infinite_buffer = 0;
267 static int rdftspeed = 20;
269 static char *vfilters = NULL;
272 /* current context */
273 static int is_full_screen;
274 static VideoState *cur_stream;
275 static int64_t audio_callback_time;
277 static AVPacket flush_pkt;
279 #define FF_ALLOC_EVENT (SDL_USEREVENT)
280 #define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
281 #define FF_QUIT_EVENT (SDL_USEREVENT + 2)
283 static SDL_Surface *screen;
285 static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
287 /* packet queue handling */
288 static void packet_queue_init(PacketQueue *q)
290 memset(q, 0, sizeof(PacketQueue));
291 q->mutex = SDL_CreateMutex();
292 q->cond = SDL_CreateCond();
293 packet_queue_put(q, &flush_pkt);
296 static void packet_queue_flush(PacketQueue *q)
298 AVPacketList *pkt, *pkt1;
300 SDL_LockMutex(q->mutex);
301 for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
303 av_free_packet(&pkt->pkt);
310 SDL_UnlockMutex(q->mutex);
313 static void packet_queue_end(PacketQueue *q)
315 packet_queue_flush(q);
316 SDL_DestroyMutex(q->mutex);
317 SDL_DestroyCond(q->cond);
320 static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
324 /* duplicate the packet */
325 if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
328 pkt1 = av_malloc(sizeof(AVPacketList));
335 SDL_LockMutex(q->mutex);
341 q->last_pkt->next = pkt1;
344 q->size += pkt1->pkt.size + sizeof(*pkt1);
345 /* XXX: should duplicate packet data in DV case */
346 SDL_CondSignal(q->cond);
348 SDL_UnlockMutex(q->mutex);
352 static void packet_queue_abort(PacketQueue *q)
354 SDL_LockMutex(q->mutex);
356 q->abort_request = 1;
358 SDL_CondSignal(q->cond);
360 SDL_UnlockMutex(q->mutex);
363 /* return < 0 if aborted, 0 if no packet and > 0 if packet. */
364 static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
369 SDL_LockMutex(q->mutex);
372 if (q->abort_request) {
379 q->first_pkt = pkt1->next;
383 q->size -= pkt1->pkt.size + sizeof(*pkt1);
392 SDL_CondWait(q->cond, q->mutex);
395 SDL_UnlockMutex(q->mutex);
399 static inline void fill_rectangle(SDL_Surface *screen,
400 int x, int y, int w, int h, int color)
407 SDL_FillRect(screen, &rect, color);
410 #define ALPHA_BLEND(a, oldp, newp, s)\
411 ((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
413 #define RGBA_IN(r, g, b, a, s)\
415 unsigned int v = ((const uint32_t *)(s))[0];\
416 a = (v >> 24) & 0xff;\
417 r = (v >> 16) & 0xff;\
418 g = (v >> 8) & 0xff;\
422 #define YUVA_IN(y, u, v, a, s, pal)\
424 unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
425 a = (val >> 24) & 0xff;\
426 y = (val >> 16) & 0xff;\
427 u = (val >> 8) & 0xff;\
431 #define YUVA_OUT(d, y, u, v, a)\
433 ((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
439 static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
441 int wrap, wrap3, width2, skip2;
442 int y, u, v, a, u1, v1, a1, w, h;
443 uint8_t *lum, *cb, *cr;
446 int dstx, dsty, dstw, dsth;
448 dstw = av_clip(rect->w, 0, imgw);
449 dsth = av_clip(rect->h, 0, imgh);
450 dstx = av_clip(rect->x, 0, imgw - dstw);
451 dsty = av_clip(rect->y, 0, imgh - dsth);
452 lum = dst->data[0] + dsty * dst->linesize[0];
453 cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
454 cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
456 width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
458 wrap = dst->linesize[0];
459 wrap3 = rect->pict.linesize[0];
460 p = rect->pict.data[0];
461 pal = (const uint32_t *)rect->pict.data[1]; /* Now in YCrCb! */
469 YUVA_IN(y, u, v, a, p, pal);
470 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
471 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
472 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
478 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
479 YUVA_IN(y, u, v, a, p, pal);
483 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
485 YUVA_IN(y, u, v, a, p + BPP, pal);
489 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
490 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
491 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
498 YUVA_IN(y, u, v, a, p, pal);
499 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
500 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
501 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
505 p += wrap3 - dstw * BPP;
506 lum += wrap - dstw - dstx;
507 cb += dst->linesize[1] - width2 - skip2;
508 cr += dst->linesize[2] - width2 - skip2;
510 for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
516 YUVA_IN(y, u, v, a, p, pal);
520 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
523 YUVA_IN(y, u, v, a, p, pal);
527 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
528 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
529 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
535 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
536 YUVA_IN(y, u, v, a, p, pal);
540 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
542 YUVA_IN(y, u, v, a, p + BPP, pal);
546 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
550 YUVA_IN(y, u, v, a, p, pal);
554 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
556 YUVA_IN(y, u, v, a, p + BPP, pal);
560 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
562 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
563 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
567 p += -wrap3 + 2 * BPP;
571 YUVA_IN(y, u, v, a, p, pal);
575 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
578 YUVA_IN(y, u, v, a, p, pal);
582 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
583 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
584 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
590 p += wrap3 + (wrap3 - dstw * BPP);
591 lum += wrap + (wrap - dstw - dstx);
592 cb += dst->linesize[1] - width2 - skip2;
593 cr += dst->linesize[2] - width2 - skip2;
595 /* handle odd height */
602 YUVA_IN(y, u, v, a, p, pal);
603 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
604 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
605 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
611 for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
612 YUVA_IN(y, u, v, a, p, pal);
616 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
618 YUVA_IN(y, u, v, a, p + BPP, pal);
622 lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
623 cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
624 cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
631 YUVA_IN(y, u, v, a, p, pal);
632 lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
633 cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
634 cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
639 static void free_subpicture(SubPicture *sp)
641 avsubtitle_free(&sp->sub);
644 static void video_image_display(VideoState *is)
650 int width, height, x, y;
654 vp = &is->pictq[is->pictq_rindex];
657 if (vp->picref->video->pixel_aspect.num == 0)
660 aspect_ratio = av_q2d(vp->picref->video->pixel_aspect);
663 /* XXX: use variable in the frame */
664 if (is->video_st->sample_aspect_ratio.num)
665 aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
666 else if (is->video_st->codec->sample_aspect_ratio.num)
667 aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
671 if (aspect_ratio <= 0.0)
673 aspect_ratio *= (float)vp->width / (float)vp->height;
677 if (is->subpq_size > 0)
679 sp = &is->subpq[is->subpq_rindex];
681 if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
683 SDL_LockYUVOverlay (vp->bmp);
685 pict.data[0] = vp->bmp->pixels[0];
686 pict.data[1] = vp->bmp->pixels[2];
687 pict.data[2] = vp->bmp->pixels[1];
689 pict.linesize[0] = vp->bmp->pitches[0];
690 pict.linesize[1] = vp->bmp->pitches[2];
691 pict.linesize[2] = vp->bmp->pitches[1];
693 for (i = 0; i < sp->sub.num_rects; i++)
694 blend_subrect(&pict, sp->sub.rects[i],
695 vp->bmp->w, vp->bmp->h);
697 SDL_UnlockYUVOverlay (vp->bmp);
703 /* XXX: we suppose the screen has a 1.0 pixel ratio */
705 width = ((int)rint(height * aspect_ratio)) & ~1;
706 if (width > is->width) {
708 height = ((int)rint(width / aspect_ratio)) & ~1;
710 x = (is->width - width) / 2;
711 y = (is->height - height) / 2;
712 is->no_background = 0;
713 rect.x = is->xleft + x;
714 rect.y = is->ytop + y;
717 SDL_DisplayYUVOverlay(vp->bmp, &rect);
721 /* get the current audio output buffer size, in samples. With SDL, we
722 cannot have a precise information */
723 static int audio_write_get_buf_size(VideoState *is)
725 return is->audio_buf_size - is->audio_buf_index;
728 static inline int compute_mod(int a, int b)
737 static void video_audio_display(VideoState *s)
739 int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
740 int ch, channels, h, h2, bgcolor, fgcolor;
742 int rdft_bits, nb_freq;
744 for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
746 nb_freq = 1 << (rdft_bits - 1);
748 /* compute display index : center on currently output samples */
749 channels = s->sdl_channels;
750 nb_display_channels = channels;
752 int data_used = s->show_audio == 1 ? s->width : (2 * nb_freq);
754 delay = audio_write_get_buf_size(s);
757 /* to be more precise, we take into account the time spent since
758 the last buffer computation */
759 if (audio_callback_time) {
760 time_diff = av_gettime() - audio_callback_time;
761 delay -= (time_diff * s->audio_st->codec->sample_rate) / 1000000;
764 delay += 2 * data_used;
765 if (delay < data_used)
768 i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
769 if (s->show_audio == 1) {
771 for (i = 0; i < 1000; i += channels) {
772 int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
773 int a = s->sample_array[idx];
774 int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
775 int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
776 int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
778 if (h < score && (b ^ c) < 0) {
785 s->last_i_start = i_start;
787 i_start = s->last_i_start;
790 bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
791 if (s->show_audio == 1) {
792 fill_rectangle(screen,
793 s->xleft, s->ytop, s->width, s->height,
796 fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
798 /* total height for one channel */
799 h = s->height / nb_display_channels;
800 /* graph height / 2 */
802 for (ch = 0; ch < nb_display_channels; ch++) {
804 y1 = s->ytop + ch * h + (h / 2); /* position of center line */
805 for (x = 0; x < s->width; x++) {
806 y = (s->sample_array[i] * h2) >> 15;
813 fill_rectangle(screen,
814 s->xleft + x, ys, 1, y,
817 if (i >= SAMPLE_ARRAY_SIZE)
818 i -= SAMPLE_ARRAY_SIZE;
822 fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
824 for (ch = 1; ch < nb_display_channels; ch++) {
825 y = s->ytop + ch * h;
826 fill_rectangle(screen,
827 s->xleft, y, s->width, 1,
830 SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
832 nb_display_channels= FFMIN(nb_display_channels, 2);
833 if (rdft_bits != s->rdft_bits) {
834 av_rdft_end(s->rdft);
835 av_free(s->rdft_data);
836 s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
837 s->rdft_bits = rdft_bits;
838 s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
842 for (ch = 0; ch < nb_display_channels; ch++) {
843 data[ch] = s->rdft_data + 2 * nb_freq * ch;
845 for (x = 0; x < 2 * nb_freq; x++) {
846 double w = (x-nb_freq) * (1.0 / nb_freq);
847 data[ch][x] = s->sample_array[i] * (1.0 - w * w);
849 if (i >= SAMPLE_ARRAY_SIZE)
850 i -= SAMPLE_ARRAY_SIZE;
852 av_rdft_calc(s->rdft, data[ch]);
854 // least efficient way to do this, we should of course directly access it but its 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->audio_st->codec->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() / 1000000.0;
981 /* get the current external clock value */
982 static double get_external_clock(VideoState *is)
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() / 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() / 1000000.0;
1031 is->video_current_pts_drift = is->video_current_pts - av_gettime() / 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;
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_dlog(NULL, "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() / 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();
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 avfilter_unref_bufferp(&vp->picref);
1234 SDL_FreeYUVOverlay(vp->bmp);
1238 SDL_DestroyMutex(is->pictq_mutex);
1239 SDL_DestroyCond(is->pictq_cond);
1240 SDL_DestroyMutex(is->subpq_mutex);
1241 SDL_DestroyCond(is->subpq_cond);
1242 #if !CONFIG_AVFILTER
1243 if (is->img_convert_ctx)
1244 sws_freeContext(is->img_convert_ctx);
1249 static void do_exit(void)
1252 stream_close(cur_stream);
1259 avformat_network_deinit();
1263 av_log(NULL, AV_LOG_QUIET, "");
1267 /* allocate a picture (needs to do that in main thread to avoid
1268 potential locking problems */
1269 static void alloc_picture(void *opaque)
1271 VideoState *is = opaque;
1274 vp = &is->pictq[is->pictq_windex];
1277 SDL_FreeYUVOverlay(vp->bmp);
1280 avfilter_unref_bufferp(&vp->picref);
1282 vp->width = is->out_video_filter->inputs[0]->w;
1283 vp->height = is->out_video_filter->inputs[0]->h;
1284 vp->pix_fmt = is->out_video_filter->inputs[0]->format;
1286 vp->width = is->video_st->codec->width;
1287 vp->height = is->video_st->codec->height;
1288 vp->pix_fmt = is->video_st->codec->pix_fmt;
1291 vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
1294 if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
1295 /* SDL allocates a buffer smaller than requested if the video
1296 * overlay hardware is unable to support the requested size. */
1297 fprintf(stderr, "Error: the video system does not support an image\n"
1298 "size of %dx%d pixels. Try using -vf \"scale=w:h\"\n"
1299 "to reduce the image size.\n", vp->width, vp->height );
1303 SDL_LockMutex(is->pictq_mutex);
1305 SDL_CondSignal(is->pictq_cond);
1306 SDL_UnlockMutex(is->pictq_mutex);
1311 * @param pts the dts of the pkt / pts of the frame and guessed if not known
1313 static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos)
1319 int dst_pix_fmt = AV_PIX_FMT_YUV420P;
1321 /* wait until we have space to put a new picture */
1322 SDL_LockMutex(is->pictq_mutex);
1324 if (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
1325 is->skip_frames = FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0 - FRAME_SKIP_FACTOR));
1327 while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
1328 !is->videoq.abort_request) {
1329 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1331 SDL_UnlockMutex(is->pictq_mutex);
1333 if (is->videoq.abort_request)
1336 vp = &is->pictq[is->pictq_windex];
1338 /* alloc or resize hardware picture buffer */
1339 if (!vp->bmp || vp->reallocate ||
1341 vp->width != is->out_video_filter->inputs[0]->w ||
1342 vp->height != is->out_video_filter->inputs[0]->h) {
1344 vp->width != is->video_st->codec->width ||
1345 vp->height != is->video_st->codec->height) {
1352 /* the allocation must be done in the main thread to avoid
1354 event.type = FF_ALLOC_EVENT;
1355 event.user.data1 = is;
1356 SDL_PushEvent(&event);
1358 /* wait until the picture is allocated */
1359 SDL_LockMutex(is->pictq_mutex);
1360 while (!vp->allocated && !is->videoq.abort_request) {
1361 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1363 SDL_UnlockMutex(is->pictq_mutex);
1365 if (is->videoq.abort_request)
1369 /* if the frame is not skipped, then display it */
1371 AVPicture pict = { { 0 } };
1373 avfilter_unref_bufferp(&vp->picref);
1374 vp->picref = src_frame->opaque;
1377 /* get a pointer on the bitmap */
1378 SDL_LockYUVOverlay (vp->bmp);
1380 pict.data[0] = vp->bmp->pixels[0];
1381 pict.data[1] = vp->bmp->pixels[2];
1382 pict.data[2] = vp->bmp->pixels[1];
1384 pict.linesize[0] = vp->bmp->pitches[0];
1385 pict.linesize[1] = vp->bmp->pitches[2];
1386 pict.linesize[2] = vp->bmp->pitches[1];
1389 pict_src.data[0] = src_frame->data[0];
1390 pict_src.data[1] = src_frame->data[1];
1391 pict_src.data[2] = src_frame->data[2];
1393 pict_src.linesize[0] = src_frame->linesize[0];
1394 pict_src.linesize[1] = src_frame->linesize[1];
1395 pict_src.linesize[2] = src_frame->linesize[2];
1397 // FIXME use direct rendering
1398 av_picture_copy(&pict, &pict_src,
1399 vp->pix_fmt, vp->width, vp->height);
1401 sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1402 is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
1403 vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
1404 dst_pix_fmt, sws_flags, NULL, NULL, NULL);
1405 if (is->img_convert_ctx == NULL) {
1406 fprintf(stderr, "Cannot initialize the conversion context\n");
1409 sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
1410 0, vp->height, pict.data, pict.linesize);
1412 /* update the bitmap content */
1413 SDL_UnlockYUVOverlay(vp->bmp);
1418 /* now we can update the picture count */
1419 if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
1420 is->pictq_windex = 0;
1421 SDL_LockMutex(is->pictq_mutex);
1422 vp->target_clock = compute_target_time(vp->pts, is);
1425 SDL_UnlockMutex(is->pictq_mutex);
1431 * compute the exact PTS for the picture if it is omitted in the stream
1432 * @param pts1 the dts of the pkt / pts of the frame
1434 static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
1436 double frame_delay, pts;
1441 /* update video clock with pts, if present */
1442 is->video_clock = pts;
1444 pts = is->video_clock;
1446 /* update video clock for next frame */
1447 frame_delay = av_q2d(is->video_st->codec->time_base);
1448 /* for MPEG2, the frame can be repeated, so we update the
1449 clock accordingly */
1450 frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
1451 is->video_clock += frame_delay;
1453 return queue_picture(is, src_frame, pts, pos);
1456 static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
1460 if (packet_queue_get(&is->videoq, pkt, 1) < 0)
1463 if (pkt->data == flush_pkt.data) {
1464 avcodec_flush_buffers(is->video_st->codec);
1466 SDL_LockMutex(is->pictq_mutex);
1467 // Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
1468 for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
1469 is->pictq[i].target_clock= 0;
1471 while (is->pictq_size && !is->videoq.abort_request) {
1472 SDL_CondWait(is->pictq_cond, is->pictq_mutex);
1474 is->video_current_pos = -1;
1475 SDL_UnlockMutex(is->pictq_mutex);
1477 init_pts_correction(&is->pts_ctx);
1478 is->frame_last_pts = AV_NOPTS_VALUE;
1479 is->frame_last_delay = 0;
1480 is->frame_timer = (double)av_gettime() / 1000000.0;
1481 is->skip_frames = 1;
1482 is->skip_frames_index = 0;
1486 avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt);
1489 if (decoder_reorder_pts == -1) {
1490 *pts = guess_correct_pts(&is->pts_ctx, frame->pkt_pts, frame->pkt_dts);
1491 } else if (decoder_reorder_pts) {
1492 *pts = frame->pkt_pts;
1494 *pts = frame->pkt_dts;
1497 if (*pts == AV_NOPTS_VALUE) {
1501 is->skip_frames_index += 1;
1502 if (is->skip_frames_index >= is->skip_frames) {
1503 is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
1512 static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
1514 char sws_flags_str[128];
1515 char buffersrc_args[256];
1517 AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_format;
1518 AVCodecContext *codec = is->video_st->codec;
1520 snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
1521 graph->scale_sws_opts = av_strdup(sws_flags_str);
1523 snprintf(buffersrc_args, sizeof(buffersrc_args), "%d:%d:%d:%d:%d:%d:%d",
1524 codec->width, codec->height, codec->pix_fmt,
1525 is->video_st->time_base.num, is->video_st->time_base.den,
1526 codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
1529 if ((ret = avfilter_graph_create_filter(&filt_src,
1530 avfilter_get_by_name("buffer"),
1531 "src", buffersrc_args, NULL,
1534 if ((ret = avfilter_graph_create_filter(&filt_out,
1535 avfilter_get_by_name("buffersink"),
1536 "out", NULL, NULL, graph)) < 0)
1539 if ((ret = avfilter_graph_create_filter(&filt_format,
1540 avfilter_get_by_name("format"),
1541 "format", "yuv420p", NULL, graph)) < 0)
1543 if ((ret = avfilter_link(filt_format, 0, filt_out, 0)) < 0)
1548 AVFilterInOut *outputs = avfilter_inout_alloc();
1549 AVFilterInOut *inputs = avfilter_inout_alloc();
1551 outputs->name = av_strdup("in");
1552 outputs->filter_ctx = filt_src;
1553 outputs->pad_idx = 0;
1554 outputs->next = NULL;
1556 inputs->name = av_strdup("out");
1557 inputs->filter_ctx = filt_format;
1558 inputs->pad_idx = 0;
1559 inputs->next = NULL;
1561 if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
1564 if ((ret = avfilter_link(filt_src, 0, filt_format, 0)) < 0)
1568 if ((ret = avfilter_graph_config(graph, NULL)) < 0)
1571 is->in_video_filter = filt_src;
1572 is->out_video_filter = filt_out;
1574 if (codec->codec->capabilities & CODEC_CAP_DR1) {
1576 codec->get_buffer = codec_get_buffer;
1577 codec->release_buffer = codec_release_buffer;
1578 codec->opaque = &is->buffer_pool;
1584 #endif /* CONFIG_AVFILTER */
1586 static int video_thread(void *arg)
1588 AVPacket pkt = { 0 };
1589 VideoState *is = arg;
1590 AVFrame *frame = avcodec_alloc_frame();
1596 AVFilterGraph *graph = avfilter_graph_alloc();
1597 AVFilterContext *filt_out = NULL, *filt_in = NULL;
1599 int last_w = is->video_st->codec->width;
1600 int last_h = is->video_st->codec->height;
1602 if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1604 filt_in = is->in_video_filter;
1605 filt_out = is->out_video_filter;
1610 AVFilterBufferRef *picref;
1613 while (is->paused && !is->videoq.abort_request)
1616 av_free_packet(&pkt);
1618 ret = get_video_frame(is, frame, &pts_int, &pkt);
1626 if ( last_w != is->video_st->codec->width
1627 || last_h != is->video_st->codec->height) {
1628 av_dlog(NULL, "Changing size %dx%d -> %dx%d\n", last_w, last_h,
1629 is->video_st->codec->width, is->video_st->codec->height);
1630 avfilter_graph_free(&graph);
1631 graph = avfilter_graph_alloc();
1632 if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
1634 filt_in = is->in_video_filter;
1635 filt_out = is->out_video_filter;
1636 last_w = is->video_st->codec->width;
1637 last_h = is->video_st->codec->height;
1640 frame->pts = pts_int;
1642 FrameBuffer *buf = frame->opaque;
1643 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1644 frame->data, frame->linesize,
1645 AV_PERM_READ | AV_PERM_PRESERVE,
1646 frame->width, frame->height,
1649 avfilter_copy_frame_props(fb, frame);
1650 fb->buf->priv = buf;
1651 fb->buf->free = filter_release_buffer;
1654 av_buffersrc_buffer(filt_in, fb);
1657 av_buffersrc_write_frame(filt_in, frame);
1660 ret = av_buffersink_read(filt_out, &picref);
1666 avfilter_copy_buf_props(frame, picref);
1668 pts_int = picref->pts;
1669 tb = filt_out->inputs[0]->time_base;
1671 frame->opaque = picref;
1673 if (av_cmp_q(tb, is->video_st->time_base)) {
1674 av_unused int64_t pts1 = pts_int;
1675 pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
1676 av_dlog(NULL, "video_thread(): "
1677 "tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
1678 tb.num, tb.den, pts1,
1679 is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
1681 pts = pts_int * av_q2d(is->video_st->time_base);
1682 ret = output_picture2(is, frame, pts, pos);
1685 pts = pts_int * av_q2d(is->video_st->time_base);
1686 ret = output_picture2(is, frame, pts, pkt.pos);
1694 stream_pause(cur_stream);
1698 av_freep(&vfilters);
1699 avfilter_graph_free(&graph);
1701 av_free_packet(&pkt);
1702 avcodec_free_frame(&frame);
1706 static int subtitle_thread(void *arg)
1708 VideoState *is = arg;
1710 AVPacket pkt1, *pkt = &pkt1;
1714 int r, g, b, y, u, v, a;
1717 while (is->paused && !is->subtitleq.abort_request) {
1720 if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
1723 if (pkt->data == flush_pkt.data) {
1724 avcodec_flush_buffers(is->subtitle_st->codec);
1727 SDL_LockMutex(is->subpq_mutex);
1728 while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
1729 !is->subtitleq.abort_request) {
1730 SDL_CondWait(is->subpq_cond, is->subpq_mutex);
1732 SDL_UnlockMutex(is->subpq_mutex);
1734 if (is->subtitleq.abort_request)
1737 sp = &is->subpq[is->subpq_windex];
1739 /* NOTE: ipts is the PTS of the _first_ picture beginning in
1740 this packet, if any */
1742 if (pkt->pts != AV_NOPTS_VALUE)
1743 pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
1745 avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
1746 &got_subtitle, pkt);
1748 if (got_subtitle && sp->sub.format == 0) {
1751 for (i = 0; i < sp->sub.num_rects; i++)
1753 for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
1755 RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
1756 y = RGB_TO_Y_CCIR(r, g, b);
1757 u = RGB_TO_U_CCIR(r, g, b, 0);
1758 v = RGB_TO_V_CCIR(r, g, b, 0);
1759 YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
1763 /* now we can update the picture count */
1764 if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
1765 is->subpq_windex = 0;
1766 SDL_LockMutex(is->subpq_mutex);
1768 SDL_UnlockMutex(is->subpq_mutex);
1770 av_free_packet(pkt);
1775 /* copy samples for viewing in editor window */
1776 static void update_sample_display(VideoState *is, short *samples, int samples_size)
1780 size = samples_size / sizeof(short);
1782 len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
1785 memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
1787 is->sample_array_index += len;
1788 if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
1789 is->sample_array_index = 0;
1794 /* return the new audio buffer size (samples can be added or deleted
1795 to get better sync if video or external master clock) */
1796 static int synchronize_audio(VideoState *is, short *samples,
1797 int samples_size1, double pts)
1799 int n, samples_size;
1802 n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
1803 samples_size = samples_size1;
1805 /* if not master, then we try to remove or add samples to correct the clock */
1806 if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
1807 is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
1808 double diff, avg_diff;
1809 int wanted_size, min_size, max_size, nb_samples;
1811 ref_clock = get_master_clock(is);
1812 diff = get_audio_clock(is) - ref_clock;
1814 if (diff < AV_NOSYNC_THRESHOLD) {
1815 is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
1816 if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
1817 /* not enough measures to have a correct estimate */
1818 is->audio_diff_avg_count++;
1820 /* estimate the A-V difference */
1821 avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
1823 if (fabs(avg_diff) >= is->audio_diff_threshold) {
1824 wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
1825 nb_samples = samples_size / n;
1827 min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1828 max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
1829 if (wanted_size < min_size)
1830 wanted_size = min_size;
1831 else if (wanted_size > max_size)
1832 wanted_size = max_size;
1834 /* add or remove samples to correction the synchro */
1835 if (wanted_size < samples_size) {
1836 /* remove samples */
1837 samples_size = wanted_size;
1838 } else if (wanted_size > samples_size) {
1839 uint8_t *samples_end, *q;
1843 nb = (samples_size - wanted_size);
1844 samples_end = (uint8_t *)samples + samples_size - n;
1845 q = samples_end + n;
1847 memcpy(q, samples_end, n);
1851 samples_size = wanted_size;
1854 av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
1855 diff, avg_diff, samples_size - samples_size1,
1856 is->audio_clock, is->video_clock, is->audio_diff_threshold);
1859 /* too big difference : may be initial PTS errors, so
1861 is->audio_diff_avg_count = 0;
1862 is->audio_diff_cum = 0;
1866 return samples_size;
1869 /* decode one audio frame and returns its uncompressed size */
1870 static int audio_decode_frame(VideoState *is, double *pts_ptr)
1872 AVPacket *pkt_temp = &is->audio_pkt_temp;
1873 AVPacket *pkt = &is->audio_pkt;
1874 AVCodecContext *dec = is->audio_st->codec;
1875 int n, len1, data_size, got_frame;
1878 int flush_complete = 0;
1881 /* NOTE: the audio packet can contain several frames */
1882 while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
1883 int resample_changed, audio_resample;
1886 if (!(is->frame = avcodec_alloc_frame()))
1887 return AVERROR(ENOMEM);
1889 avcodec_get_frame_defaults(is->frame);
1894 len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
1896 /* if error, we skip the frame */
1901 pkt_temp->data += len1;
1902 pkt_temp->size -= len1;
1905 /* stop sending empty packets if the decoder is finished */
1906 if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
1910 data_size = av_samples_get_buffer_size(NULL, dec->channels,
1911 is->frame->nb_samples,
1912 dec->sample_fmt, 1);
1914 audio_resample = dec->sample_fmt != is->sdl_sample_fmt ||
1915 dec->channel_layout != is->sdl_channel_layout;
1917 resample_changed = dec->sample_fmt != is->resample_sample_fmt ||
1918 dec->channel_layout != is->resample_channel_layout;
1920 if ((!is->avr && audio_resample) || resample_changed) {
1923 avresample_close(is->avr);
1924 else if (audio_resample) {
1925 is->avr = avresample_alloc_context();
1927 fprintf(stderr, "error allocating AVAudioResampleContext\n");
1931 if (audio_resample) {
1932 av_opt_set_int(is->avr, "in_channel_layout", dec->channel_layout, 0);
1933 av_opt_set_int(is->avr, "in_sample_fmt", dec->sample_fmt, 0);
1934 av_opt_set_int(is->avr, "in_sample_rate", dec->sample_rate, 0);
1935 av_opt_set_int(is->avr, "out_channel_layout", is->sdl_channel_layout, 0);
1936 av_opt_set_int(is->avr, "out_sample_fmt", is->sdl_sample_fmt, 0);
1937 av_opt_set_int(is->avr, "out_sample_rate", dec->sample_rate, 0);
1939 if ((ret = avresample_open(is->avr)) < 0) {
1940 fprintf(stderr, "error initializing libavresample\n");
1944 is->resample_sample_fmt = dec->sample_fmt;
1945 is->resample_channel_layout = dec->channel_layout;
1948 if (audio_resample) {
1950 int out_samples, out_size, out_linesize;
1951 int osize = av_get_bytes_per_sample(is->sdl_sample_fmt);
1952 int nb_samples = is->frame->nb_samples;
1954 out_size = av_samples_get_buffer_size(&out_linesize,
1957 is->sdl_sample_fmt, 0);
1958 tmp_out = av_realloc(is->audio_buf1, out_size);
1960 return AVERROR(ENOMEM);
1961 is->audio_buf1 = tmp_out;
1963 out_samples = avresample_convert(is->avr,
1965 out_linesize, nb_samples,
1967 is->frame->linesize[0],
1968 is->frame->nb_samples);
1969 if (out_samples < 0) {
1970 fprintf(stderr, "avresample_convert() failed\n");
1973 is->audio_buf = is->audio_buf1;
1974 data_size = out_samples * osize * is->sdl_channels;
1976 is->audio_buf = is->frame->data[0];
1979 /* if no pts, then compute it */
1980 pts = is->audio_clock;
1982 n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
1983 is->audio_clock += (double)data_size /
1984 (double)(n * dec->sample_rate);
1987 static double last_clock;
1988 printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
1989 is->audio_clock - last_clock,
1990 is->audio_clock, pts);
1991 last_clock = is->audio_clock;
1997 /* free the current packet */
1999 av_free_packet(pkt);
2000 memset(pkt_temp, 0, sizeof(*pkt_temp));
2002 if (is->paused || is->audioq.abort_request) {
2006 /* read next packet */
2007 if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
2010 if (pkt->data == flush_pkt.data) {
2011 avcodec_flush_buffers(dec);
2017 /* if update the audio clock with the pts */
2018 if (pkt->pts != AV_NOPTS_VALUE) {
2019 is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
2024 /* prepare a new audio buffer */
2025 static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
2027 VideoState *is = opaque;
2028 int audio_size, len1;
2031 audio_callback_time = av_gettime();
2034 if (is->audio_buf_index >= is->audio_buf_size) {
2035 audio_size = audio_decode_frame(is, &pts);
2036 if (audio_size < 0) {
2037 /* if error, just output silence */
2038 is->audio_buf = is->silence_buf;
2039 is->audio_buf_size = sizeof(is->silence_buf);
2042 update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
2043 audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
2045 is->audio_buf_size = audio_size;
2047 is->audio_buf_index = 0;
2049 len1 = is->audio_buf_size - is->audio_buf_index;
2052 memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
2055 is->audio_buf_index += len1;
2059 /* open a given stream. Return 0 if OK */
2060 static int stream_component_open(VideoState *is, int stream_index)
2062 AVFormatContext *ic = is->ic;
2063 AVCodecContext *avctx;
2065 SDL_AudioSpec wanted_spec, spec;
2067 AVDictionaryEntry *t = NULL;
2069 if (stream_index < 0 || stream_index >= ic->nb_streams)
2071 avctx = ic->streams[stream_index]->codec;
2073 opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], NULL);
2075 codec = avcodec_find_decoder(avctx->codec_id);
2076 avctx->debug_mv = debug_mv;
2077 avctx->debug = debug;
2078 avctx->workaround_bugs = workaround_bugs;
2079 avctx->idct_algo = idct;
2080 avctx->skip_frame = skip_frame;
2081 avctx->skip_idct = skip_idct;
2082 avctx->skip_loop_filter = skip_loop_filter;
2083 avctx->error_concealment = error_concealment;
2085 if (fast) avctx->flags2 |= CODEC_FLAG2_FAST;
2087 if (!av_dict_get(opts, "threads", NULL, 0))
2088 av_dict_set(&opts, "threads", "auto", 0);
2090 avcodec_open2(avctx, codec, &opts) < 0)
2092 if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2093 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2094 return AVERROR_OPTION_NOT_FOUND;
2097 /* prepare audio output */
2098 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2099 wanted_spec.freq = avctx->sample_rate;
2100 wanted_spec.format = AUDIO_S16SYS;
2102 if (!avctx->channel_layout)
2103 avctx->channel_layout = av_get_default_channel_layout(avctx->channels);
2104 if (!avctx->channel_layout) {
2105 fprintf(stderr, "unable to guess channel layout\n");
2108 if (avctx->channels == 1)
2109 is->sdl_channel_layout = AV_CH_LAYOUT_MONO;
2111 is->sdl_channel_layout = AV_CH_LAYOUT_STEREO;
2112 is->sdl_channels = av_get_channel_layout_nb_channels(is->sdl_channel_layout);
2114 wanted_spec.channels = is->sdl_channels;
2115 wanted_spec.silence = 0;
2116 wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
2117 wanted_spec.callback = sdl_audio_callback;
2118 wanted_spec.userdata = is;
2119 if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
2120 fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
2123 is->audio_hw_buf_size = spec.size;
2124 is->sdl_sample_fmt = AV_SAMPLE_FMT_S16;
2125 is->resample_sample_fmt = is->sdl_sample_fmt;
2126 is->resample_channel_layout = is->sdl_channel_layout;
2129 ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
2130 switch (avctx->codec_type) {
2131 case AVMEDIA_TYPE_AUDIO:
2132 is->audio_stream = stream_index;
2133 is->audio_st = ic->streams[stream_index];
2134 is->audio_buf_size = 0;
2135 is->audio_buf_index = 0;
2137 /* init averaging filter */
2138 is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
2139 is->audio_diff_avg_count = 0;
2140 /* since we do not have a precise anough audio fifo fullness,
2141 we correct audio sync only if larger than this threshold */
2142 is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
2144 memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
2145 packet_queue_init(&is->audioq);
2148 case AVMEDIA_TYPE_VIDEO:
2149 is->video_stream = stream_index;
2150 is->video_st = ic->streams[stream_index];
2152 packet_queue_init(&is->videoq);
2153 is->video_tid = SDL_CreateThread(video_thread, is);
2155 case AVMEDIA_TYPE_SUBTITLE:
2156 is->subtitle_stream = stream_index;
2157 is->subtitle_st = ic->streams[stream_index];
2158 packet_queue_init(&is->subtitleq);
2160 is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
2168 static void stream_component_close(VideoState *is, int stream_index)
2170 AVFormatContext *ic = is->ic;
2171 AVCodecContext *avctx;
2173 if (stream_index < 0 || stream_index >= ic->nb_streams)
2175 avctx = ic->streams[stream_index]->codec;
2177 switch (avctx->codec_type) {
2178 case AVMEDIA_TYPE_AUDIO:
2179 packet_queue_abort(&is->audioq);
2183 packet_queue_end(&is->audioq);
2184 av_free_packet(&is->audio_pkt);
2186 avresample_free(&is->avr);
2187 av_freep(&is->audio_buf1);
2188 is->audio_buf = NULL;
2189 avcodec_free_frame(&is->frame);
2192 av_rdft_end(is->rdft);
2193 av_freep(&is->rdft_data);
2198 case AVMEDIA_TYPE_VIDEO:
2199 packet_queue_abort(&is->videoq);
2201 /* note: we also signal this mutex to make sure we deblock the
2202 video thread in all cases */
2203 SDL_LockMutex(is->pictq_mutex);
2204 SDL_CondSignal(is->pictq_cond);
2205 SDL_UnlockMutex(is->pictq_mutex);
2207 SDL_WaitThread(is->video_tid, NULL);
2209 packet_queue_end(&is->videoq);
2211 case AVMEDIA_TYPE_SUBTITLE:
2212 packet_queue_abort(&is->subtitleq);
2214 /* note: we also signal this mutex to make sure we deblock the
2215 video thread in all cases */
2216 SDL_LockMutex(is->subpq_mutex);
2217 is->subtitle_stream_changed = 1;
2219 SDL_CondSignal(is->subpq_cond);
2220 SDL_UnlockMutex(is->subpq_mutex);
2222 SDL_WaitThread(is->subtitle_tid, NULL);
2224 packet_queue_end(&is->subtitleq);
2230 ic->streams[stream_index]->discard = AVDISCARD_ALL;
2231 avcodec_close(avctx);
2233 free_buffer_pool(&is->buffer_pool);
2235 switch (avctx->codec_type) {
2236 case AVMEDIA_TYPE_AUDIO:
2237 is->audio_st = NULL;
2238 is->audio_stream = -1;
2240 case AVMEDIA_TYPE_VIDEO:
2241 is->video_st = NULL;
2242 is->video_stream = -1;
2244 case AVMEDIA_TYPE_SUBTITLE:
2245 is->subtitle_st = NULL;
2246 is->subtitle_stream = -1;
2253 /* since we have only one decoding thread, we can use a global
2254 variable instead of a thread local variable */
2255 static VideoState *global_video_state;
2257 static int decode_interrupt_cb(void *ctx)
2259 return global_video_state && global_video_state->abort_request;
2262 /* this thread gets the stream from the disk or the network */
2263 static int decode_thread(void *arg)
2265 VideoState *is = arg;
2266 AVFormatContext *ic = NULL;
2268 int st_index[AVMEDIA_TYPE_NB];
2269 AVPacket pkt1, *pkt = &pkt1;
2271 int pkt_in_play_range = 0;
2272 AVDictionaryEntry *t;
2273 AVDictionary **opts;
2274 int orig_nb_streams;
2276 memset(st_index, -1, sizeof(st_index));
2277 is->video_stream = -1;
2278 is->audio_stream = -1;
2279 is->subtitle_stream = -1;
2281 global_video_state = is;
2283 ic = avformat_alloc_context();
2284 ic->interrupt_callback.callback = decode_interrupt_cb;
2285 err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
2287 print_error(is->filename, err);
2291 if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
2292 av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
2293 ret = AVERROR_OPTION_NOT_FOUND;
2299 ic->flags |= AVFMT_FLAG_GENPTS;
2301 opts = setup_find_stream_info_opts(ic, codec_opts);
2302 orig_nb_streams = ic->nb_streams;
2304 err = avformat_find_stream_info(ic, opts);
2306 fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
2310 for (i = 0; i < orig_nb_streams; i++)
2311 av_dict_free(&opts[i]);
2315 ic->pb->eof_reached = 0; // FIXME hack, avplay maybe should not use url_feof() to test for the end
2317 if (seek_by_bytes < 0)
2318 seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
2320 /* if seeking requested, we execute it */
2321 if (start_time != AV_NOPTS_VALUE) {
2324 timestamp = start_time;
2325 /* add the stream start time */
2326 if (ic->start_time != AV_NOPTS_VALUE)
2327 timestamp += ic->start_time;
2328 ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
2330 fprintf(stderr, "%s: could not seek to position %0.3f\n",
2331 is->filename, (double)timestamp / AV_TIME_BASE);
2335 for (i = 0; i < ic->nb_streams; i++)
2336 ic->streams[i]->discard = AVDISCARD_ALL;
2338 st_index[AVMEDIA_TYPE_VIDEO] =
2339 av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
2340 wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
2342 st_index[AVMEDIA_TYPE_AUDIO] =
2343 av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
2344 wanted_stream[AVMEDIA_TYPE_AUDIO],
2345 st_index[AVMEDIA_TYPE_VIDEO],
2348 st_index[AVMEDIA_TYPE_SUBTITLE] =
2349 av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
2350 wanted_stream[AVMEDIA_TYPE_SUBTITLE],
2351 (st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
2352 st_index[AVMEDIA_TYPE_AUDIO] :
2353 st_index[AVMEDIA_TYPE_VIDEO]),
2356 av_dump_format(ic, 0, is->filename, 0);
2359 /* open the streams */
2360 if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
2361 stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
2365 if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
2366 ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
2368 is->refresh_tid = SDL_CreateThread(refresh_thread, is);
2370 if (!display_disable)
2374 if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
2375 stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
2378 if (is->video_stream < 0 && is->audio_stream < 0) {
2379 fprintf(stderr, "%s: could not open codecs\n", is->filename);
2385 if (is->abort_request)
2387 if (is->paused != is->last_paused) {
2388 is->last_paused = is->paused;
2390 is->read_pause_return = av_read_pause(ic);
2394 #if CONFIG_RTSP_DEMUXER
2395 if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
2396 /* wait 10 ms to avoid trying to get another packet */
2403 int64_t seek_target = is->seek_pos;
2404 int64_t seek_min = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
2405 int64_t seek_max = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
2406 // FIXME the +-2 is due to rounding being not done in the correct direction in generation
2407 // of the seek_pos/seek_rel variables
2409 ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
2411 fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
2413 if (is->audio_stream >= 0) {
2414 packet_queue_flush(&is->audioq);
2415 packet_queue_put(&is->audioq, &flush_pkt);
2417 if (is->subtitle_stream >= 0) {
2418 packet_queue_flush(&is->subtitleq);
2419 packet_queue_put(&is->subtitleq, &flush_pkt);
2421 if (is->video_stream >= 0) {
2422 packet_queue_flush(&is->videoq);
2423 packet_queue_put(&is->videoq, &flush_pkt);
2430 /* if the queue are full, no need to read more */
2431 if (!infinite_buffer &&
2432 (is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
2433 || ( (is->audioq .size > MIN_AUDIOQ_SIZE || is->audio_stream < 0)
2434 && (is->videoq .nb_packets > MIN_FRAMES || is->video_stream < 0)
2435 && (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0)))) {
2441 if (is->video_stream >= 0) {
2442 av_init_packet(pkt);
2445 pkt->stream_index = is->video_stream;
2446 packet_queue_put(&is->videoq, pkt);
2448 if (is->audio_stream >= 0 &&
2449 is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
2450 av_init_packet(pkt);
2453 pkt->stream_index = is->audio_stream;
2454 packet_queue_put(&is->audioq, pkt);
2457 if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
2458 if (loop != 1 && (!loop || --loop)) {
2459 stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
2460 } else if (autoexit) {
2467 ret = av_read_frame(ic, pkt);
2469 if (ret == AVERROR_EOF || (ic->pb && ic->pb->eof_reached))
2471 if (ic->pb && ic->pb->error)
2473 SDL_Delay(100); /* wait for user event */
2476 /* check if packet is in play range specified by user, then queue, otherwise discard */
2477 pkt_in_play_range = duration == AV_NOPTS_VALUE ||
2478 (pkt->pts - ic->streams[pkt->stream_index]->start_time) *
2479 av_q2d(ic->streams[pkt->stream_index]->time_base) -
2480 (double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
2481 <= ((double)duration / 1000000);
2482 if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
2483 packet_queue_put(&is->audioq, pkt);
2484 } else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
2485 packet_queue_put(&is->videoq, pkt);
2486 } else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
2487 packet_queue_put(&is->subtitleq, pkt);
2489 av_free_packet(pkt);
2492 /* wait until the end */
2493 while (!is->abort_request) {
2499 /* disable interrupting */
2500 global_video_state = NULL;
2502 /* close each stream */
2503 if (is->audio_stream >= 0)
2504 stream_component_close(is, is->audio_stream);
2505 if (is->video_stream >= 0)
2506 stream_component_close(is, is->video_stream);
2507 if (is->subtitle_stream >= 0)
2508 stream_component_close(is, is->subtitle_stream);
2510 avformat_close_input(&is->ic);
2516 event.type = FF_QUIT_EVENT;
2517 event.user.data1 = is;
2518 SDL_PushEvent(&event);
2523 static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
2527 is = av_mallocz(sizeof(VideoState));
2530 av_strlcpy(is->filename, filename, sizeof(is->filename));
2531 is->iformat = iformat;
2535 /* start video display */
2536 is->pictq_mutex = SDL_CreateMutex();
2537 is->pictq_cond = SDL_CreateCond();
2539 is->subpq_mutex = SDL_CreateMutex();
2540 is->subpq_cond = SDL_CreateCond();
2542 is->av_sync_type = av_sync_type;
2543 is->parse_tid = SDL_CreateThread(decode_thread, is);
2544 if (!is->parse_tid) {
2551 static void stream_cycle_channel(VideoState *is, int codec_type)
2553 AVFormatContext *ic = is->ic;
2554 int start_index, stream_index;
2557 if (codec_type == AVMEDIA_TYPE_VIDEO)
2558 start_index = is->video_stream;
2559 else if (codec_type == AVMEDIA_TYPE_AUDIO)
2560 start_index = is->audio_stream;
2562 start_index = is->subtitle_stream;
2563 if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
2565 stream_index = start_index;
2567 if (++stream_index >= is->ic->nb_streams)
2569 if (codec_type == AVMEDIA_TYPE_SUBTITLE)
2576 if (stream_index == start_index)
2578 st = ic->streams[stream_index];
2579 if (st->codec->codec_type == codec_type) {
2580 /* check that parameters are OK */
2581 switch (codec_type) {
2582 case AVMEDIA_TYPE_AUDIO:
2583 if (st->codec->sample_rate != 0 &&
2584 st->codec->channels != 0)
2587 case AVMEDIA_TYPE_VIDEO:
2588 case AVMEDIA_TYPE_SUBTITLE:
2596 stream_component_close(is, start_index);
2597 stream_component_open(is, stream_index);
2601 static void toggle_full_screen(void)
2603 #if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
2604 /* OS X needs to empty the picture_queue */
2606 for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
2607 cur_stream->pictq[i].reallocate = 1;
2609 is_full_screen = !is_full_screen;
2610 video_open(cur_stream);
2613 static void toggle_pause(void)
2616 stream_pause(cur_stream);
2620 static void step_to_next_frame(void)
2623 /* if the stream is paused unpause it, then step */
2624 if (cur_stream->paused)
2625 stream_pause(cur_stream);
2630 static void toggle_audio_display(void)
2633 int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
2634 cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
2635 fill_rectangle(screen,
2636 cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
2638 SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
2642 /* handle an event sent by the GUI */
2643 static void event_loop(void)
2646 double incr, pos, frac;
2650 SDL_WaitEvent(&event);
2651 switch (event.type) {
2653 if (exit_on_keydown) {
2657 switch (event.key.keysym.sym) {
2663 toggle_full_screen();
2669 case SDLK_s: // S: Step to next frame
2670 step_to_next_frame();
2674 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
2678 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
2682 stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
2685 toggle_audio_display();
2700 if (seek_by_bytes) {
2701 if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
2702 pos = cur_stream->video_current_pos;
2703 } else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
2704 pos = cur_stream->audio_pkt.pos;
2706 pos = avio_tell(cur_stream->ic->pb);
2707 if (cur_stream->ic->bit_rate)
2708 incr *= cur_stream->ic->bit_rate / 8.0;
2712 stream_seek(cur_stream, pos, incr, 1);
2714 pos = get_master_clock(cur_stream);
2716 stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
2724 case SDL_MOUSEBUTTONDOWN:
2725 if (exit_on_mousedown) {
2729 case SDL_MOUSEMOTION:
2730 if (event.type == SDL_MOUSEBUTTONDOWN) {
2733 if (event.motion.state != SDL_PRESSED)
2738 if (seek_by_bytes || cur_stream->ic->duration <= 0) {
2739 uint64_t size = avio_size(cur_stream->ic->pb);
2740 stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
2744 int tns, thh, tmm, tss;
2745 tns = cur_stream->ic->duration / 1000000LL;
2747 tmm = (tns % 3600) / 60;
2749 frac = x / cur_stream->width;
2752 mm = (ns % 3600) / 60;
2754 fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
2755 hh, mm, ss, thh, tmm, tss);
2756 ts = frac * cur_stream->ic->duration;
2757 if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
2758 ts += cur_stream->ic->start_time;
2759 stream_seek(cur_stream, ts, 0, 0);
2763 case SDL_VIDEORESIZE:
2765 screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
2766 SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
2767 screen_width = cur_stream->width = event.resize.w;
2768 screen_height = cur_stream->height = event.resize.h;
2775 case FF_ALLOC_EVENT:
2776 video_open(event.user.data1);
2777 alloc_picture(event.user.data1);
2779 case FF_REFRESH_EVENT:
2780 video_refresh_timer(event.user.data1);
2781 cur_stream->refresh = 0;
2789 static int opt_frame_size(void *optctx, const char *opt, const char *arg)
2791 av_log(NULL, AV_LOG_ERROR,
2792 "Option '%s' has been removed, use private format options instead\n", opt);
2793 return AVERROR(EINVAL);
2796 static int opt_width(void *optctx, const char *opt, const char *arg)
2798 screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2802 static int opt_height(void *optctx, const char *opt, const char *arg)
2804 screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
2808 static int opt_format(void *optctx, const char *opt, const char *arg)
2810 file_iformat = av_find_input_format(arg);
2811 if (!file_iformat) {
2812 fprintf(stderr, "Unknown input format: %s\n", arg);
2813 return AVERROR(EINVAL);
2818 static int opt_frame_pix_fmt(void *optctx, const char *opt, const char *arg)
2820 av_log(NULL, AV_LOG_ERROR,
2821 "Option '%s' has been removed, use private format options instead\n", opt);
2822 return AVERROR(EINVAL);
2825 static int opt_sync(void *optctx, const char *opt, const char *arg)
2827 if (!strcmp(arg, "audio"))
2828 av_sync_type = AV_SYNC_AUDIO_MASTER;
2829 else if (!strcmp(arg, "video"))
2830 av_sync_type = AV_SYNC_VIDEO_MASTER;
2831 else if (!strcmp(arg, "ext"))
2832 av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
2834 fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
2840 static int opt_seek(void *optctx, const char *opt, const char *arg)
2842 start_time = parse_time_or_die(opt, arg, 1);
2846 static int opt_duration(void *optctx, const char *opt, const char *arg)
2848 duration = parse_time_or_die(opt, arg, 1);
2852 static int opt_debug(void *optctx, const char *opt, const char *arg)
2854 av_log_set_level(99);
2855 debug = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2859 static int opt_vismv(void *optctx, const char *opt, const char *arg)
2861 debug_mv = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2865 static const OptionDef options[] = {
2866 #include "cmdutils_common_opts.h"
2867 { "x", HAS_ARG, { .func_arg = opt_width }, "force displayed width", "width" },
2868 { "y", HAS_ARG, { .func_arg = opt_height }, "force displayed height", "height" },
2869 { "s", HAS_ARG | OPT_VIDEO, { .func_arg = opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
2870 { "fs", OPT_BOOL, { &is_full_screen }, "force full screen" },
2871 { "an", OPT_BOOL, { &audio_disable }, "disable audio" },
2872 { "vn", OPT_BOOL, { &video_disable }, "disable video" },
2873 { "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
2874 { "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
2875 { "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { &wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
2876 { "ss", HAS_ARG, { .func_arg = opt_seek }, "seek to a given position in seconds", "pos" },
2877 { "t", HAS_ARG, { .func_arg = opt_duration }, "play \"duration\" seconds of audio/video", "duration" },
2878 { "bytes", OPT_INT | HAS_ARG, { &seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
2879 { "nodisp", OPT_BOOL, { &display_disable }, "disable graphical display" },
2880 { "f", HAS_ARG, { .func_arg = opt_format }, "force format", "fmt" },
2881 { "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { .func_arg = opt_frame_pix_fmt }, "set pixel format", "format" },
2882 { "stats", OPT_BOOL | OPT_EXPERT, { &show_status }, "show status", "" },
2883 { "debug", HAS_ARG | OPT_EXPERT, { .func_arg = opt_debug }, "print specific debug info", "" },
2884 { "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { &workaround_bugs }, "workaround bugs", "" },
2885 { "vismv", HAS_ARG | OPT_EXPERT, { .func_arg = opt_vismv }, "visualize motion vectors", "" },
2886 { "fast", OPT_BOOL | OPT_EXPERT, { &fast }, "non spec compliant optimizations", "" },
2887 { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
2888 { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
2889 { "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_loop_filter }, "", "" },
2890 { "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_frame }, "", "" },
2891 { "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { &skip_idct }, "", "" },
2892 { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { &idct }, "set idct algo", "algo" },
2893 { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { &error_concealment }, "set error concealment options", "bit_mask" },
2894 { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
2895 { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },
2896 { "exitonkeydown", OPT_BOOL | OPT_EXPERT, { &exit_on_keydown }, "exit on key down", "" },
2897 { "exitonmousedown", OPT_BOOL | OPT_EXPERT, { &exit_on_mousedown }, "exit on mouse down", "" },
2898 { "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { &loop }, "set number of times the playback shall be looped", "loop count" },
2899 { "framedrop", OPT_BOOL | OPT_EXPERT, { &framedrop }, "drop frames when cpu is too slow", "" },
2900 { "infbuf", OPT_BOOL | OPT_EXPERT, { &infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
2901 { "window_title", OPT_STRING | HAS_ARG, { &window_title }, "set window title", "window title" },
2903 { "vf", OPT_STRING | HAS_ARG, { &vfilters }, "video filters", "filter list" },
2905 { "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { &rdftspeed }, "rdft speed", "msecs" },
2906 { "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { opt_default }, "generic catch all option", "" },
2907 { "i", 0, { NULL }, "avconv compatibility dummy option", ""},
2911 static void show_usage(void)
2913 printf("Simple media player\n");
2914 printf("usage: %s [options] input_file\n", program_name);
2918 void show_help_default(const char *opt, const char *arg)
2920 av_log_set_callback(log_callback_help);
2922 show_help_options(options, "Main options:", 0, OPT_EXPERT, 0);
2923 show_help_options(options, "Advanced options:", OPT_EXPERT, 0, 0);
2925 show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2926 show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
2927 #if !CONFIG_AVFILTER
2928 show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
2930 printf("\nWhile playing:\n"
2932 "f toggle full screen\n"
2934 "a cycle audio channel\n"
2935 "v cycle video channel\n"
2936 "t cycle subtitle channel\n"
2937 "w show audio waves\n"
2938 "s activate frame-step mode\n"
2939 "left/right seek backward/forward 10 seconds\n"
2940 "down/up seek backward/forward 1 minute\n"
2941 "mouse click seek to percentage in file corresponding to fraction of width\n"
2945 static void opt_input_file(void *optctx, const char *filename)
2947 if (input_filename) {
2948 fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
2949 filename, input_filename);
2952 if (!strcmp(filename, "-"))
2954 input_filename = filename;
2957 /* Called from the main */
2958 int main(int argc, char **argv)
2962 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2963 parse_loglevel(argc, argv, options);
2965 /* register all codecs, demux and protocols */
2966 avcodec_register_all();
2968 avdevice_register_all();
2971 avfilter_register_all();
2974 avformat_network_init();
2980 parse_options(NULL, argc, argv, options, opt_input_file);
2982 if (!input_filename) {
2984 fprintf(stderr, "An input file must be specified\n");
2985 fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2989 if (display_disable) {
2992 flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
2993 #if !defined(__MINGW32__) && !defined(__APPLE__)
2994 flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
2996 if (SDL_Init (flags)) {
2997 fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
3001 if (!display_disable) {
3002 #if HAVE_SDL_VIDEO_SIZE
3003 const SDL_VideoInfo *vi = SDL_GetVideoInfo();
3004 fs_screen_width = vi->current_w;
3005 fs_screen_height = vi->current_h;
3009 SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
3010 SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
3011 SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
3013 av_init_packet(&flush_pkt);
3014 flush_pkt.data = "FLUSH";
3016 cur_stream = stream_open(input_filename, file_iformat);