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FFmpeg/avplay.c

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/*
* avplay : Simple Media Player based on the Libav libraries
* Copyright (c) 2003 Fabrice Bellard
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <inttypes.h>
#include <math.h>
#include <limits.h>
#include "libavutil/avstring.h"
#include "libavutil/colorspace.h"
#include "libavutil/mathematics.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
#include "libavutil/dict.h"
#include "libavutil/parseutils.h"
#include "libavutil/samplefmt.h"
#include "libavutil/time.h"
#include "libavformat/avformat.h"
#include "libavdevice/avdevice.h"
#include "libswscale/swscale.h"
#include "libavresample/avresample.h"
#include "libavutil/opt.h"
#include "libavcodec/avfft.h"
#if CONFIG_AVFILTER
# include "libavfilter/avfilter.h"
# include "libavfilter/avfiltergraph.h"
# include "libavfilter/buffersink.h"
# include "libavfilter/buffersrc.h"
#endif
#include "cmdutils.h"
#include <SDL.h>
#include <SDL_thread.h>
#ifdef __MINGW32__
#undef main /* We don't want SDL to override our main() */
#endif
#include <assert.h>
const char program_name[] = "avplay";
const int program_birth_year = 2003;
#define MAX_QUEUE_SIZE (15 * 1024 * 1024)
#define MIN_AUDIOQ_SIZE (20 * 16 * 1024)
#define MIN_FRAMES 5
/* SDL audio buffer size, in samples. Should be small to have precise
A/V sync as SDL does not have hardware buffer fullness info. */
#define SDL_AUDIO_BUFFER_SIZE 1024
/* no AV sync correction is done if below the AV sync threshold */
#define AV_SYNC_THRESHOLD 0.01
/* no AV correction is done if too big error */
#define AV_NOSYNC_THRESHOLD 10.0
#define FRAME_SKIP_FACTOR 0.05
/* maximum audio speed change to get correct sync */
#define SAMPLE_CORRECTION_PERCENT_MAX 10
/* we use about AUDIO_DIFF_AVG_NB A-V differences to make the average */
#define AUDIO_DIFF_AVG_NB 20
/* NOTE: the size must be big enough to compensate the hardware audio buffersize size */
#define SAMPLE_ARRAY_SIZE (2 * 65536)
static int sws_flags = SWS_BICUBIC;
typedef struct PacketQueue {
AVPacketList *first_pkt, *last_pkt;
int nb_packets;
int size;
int abort_request;
SDL_mutex *mutex;
SDL_cond *cond;
} PacketQueue;
#define VIDEO_PICTURE_QUEUE_SIZE 2
#define SUBPICTURE_QUEUE_SIZE 4
typedef struct VideoPicture {
double pts; ///< presentation time stamp for this picture
double target_clock; ///< av_gettime() time at which this should be displayed ideally
int64_t pos; ///< byte position in file
SDL_Overlay *bmp;
int width, height; /* source height & width */
int allocated;
int reallocate;
enum PixelFormat pix_fmt;
#if CONFIG_AVFILTER
AVFilterBufferRef *picref;
#endif
} VideoPicture;
typedef struct SubPicture {
double pts; /* presentation time stamp for this picture */
AVSubtitle sub;
} SubPicture;
enum {
AV_SYNC_AUDIO_MASTER, /* default choice */
AV_SYNC_VIDEO_MASTER,
AV_SYNC_EXTERNAL_CLOCK, /* synchronize to an external clock */
};
typedef struct VideoState {
SDL_Thread *parse_tid;
SDL_Thread *video_tid;
SDL_Thread *refresh_tid;
AVInputFormat *iformat;
int no_background;
int abort_request;
int paused;
int last_paused;
int seek_req;
int seek_flags;
int64_t seek_pos;
int64_t seek_rel;
int read_pause_return;
AVFormatContext *ic;
int audio_stream;
int av_sync_type;
double external_clock; /* external clock base */
int64_t external_clock_time;
double audio_clock;
double audio_diff_cum; /* used for AV difference average computation */
double audio_diff_avg_coef;
double audio_diff_threshold;
int audio_diff_avg_count;
AVStream *audio_st;
PacketQueue audioq;
int audio_hw_buf_size;
uint8_t silence_buf[SDL_AUDIO_BUFFER_SIZE];
uint8_t *audio_buf;
uint8_t *audio_buf1;
unsigned int audio_buf_size; /* in bytes */
int audio_buf_index; /* in bytes */
AVPacket audio_pkt_temp;
AVPacket audio_pkt;
enum AVSampleFormat sdl_sample_fmt;
uint64_t sdl_channel_layout;
int sdl_channels;
enum AVSampleFormat resample_sample_fmt;
uint64_t resample_channel_layout;
AVAudioResampleContext *avr;
AVFrame *frame;
int show_audio; /* if true, display audio samples */
int16_t sample_array[SAMPLE_ARRAY_SIZE];
int sample_array_index;
int last_i_start;
RDFTContext *rdft;
int rdft_bits;
FFTSample *rdft_data;
int xpos;
SDL_Thread *subtitle_tid;
int subtitle_stream;
int subtitle_stream_changed;
AVStream *subtitle_st;
PacketQueue subtitleq;
SubPicture subpq[SUBPICTURE_QUEUE_SIZE];
int subpq_size, subpq_rindex, subpq_windex;
SDL_mutex *subpq_mutex;
SDL_cond *subpq_cond;
double frame_timer;
double frame_last_pts;
double frame_last_delay;
double video_clock; ///< pts of last decoded frame / predicted pts of next decoded frame
int video_stream;
AVStream *video_st;
PacketQueue videoq;
double video_current_pts; ///< current displayed pts (different from video_clock if frame fifos are used)
double video_current_pts_drift; ///< video_current_pts - time (av_gettime) at which we updated video_current_pts - used to have running video pts
int64_t video_current_pos; ///< current displayed file pos
VideoPicture pictq[VIDEO_PICTURE_QUEUE_SIZE];
int pictq_size, pictq_rindex, pictq_windex;
SDL_mutex *pictq_mutex;
SDL_cond *pictq_cond;
#if !CONFIG_AVFILTER
struct SwsContext *img_convert_ctx;
#endif
// QETimer *video_timer;
char filename[1024];
int width, height, xleft, ytop;
PtsCorrectionContext pts_ctx;
#if CONFIG_AVFILTER
AVFilterContext *in_video_filter; ///< the first filter in the video chain
AVFilterContext *out_video_filter; ///< the last filter in the video chain
int use_dr1;
FrameBuffer *buffer_pool;
#endif
float skip_frames;
float skip_frames_index;
int refresh;
} VideoState;
static void show_help(void);
/* options specified by the user */
static AVInputFormat *file_iformat;
static const char *input_filename;
static const char *window_title;
static int fs_screen_width;
static int fs_screen_height;
static int screen_width = 0;
static int screen_height = 0;
static int audio_disable;
static int video_disable;
static int wanted_stream[AVMEDIA_TYPE_NB] = {
[AVMEDIA_TYPE_AUDIO] = -1,
[AVMEDIA_TYPE_VIDEO] = -1,
[AVMEDIA_TYPE_SUBTITLE] = -1,
};
static int seek_by_bytes = -1;
static int display_disable;
static int show_status = 1;
static int av_sync_type = AV_SYNC_AUDIO_MASTER;
static int64_t start_time = AV_NOPTS_VALUE;
static int64_t duration = AV_NOPTS_VALUE;
static int debug = 0;
static int debug_mv = 0;
static int step = 0;
static int workaround_bugs = 1;
static int fast = 0;
static int genpts = 0;
static int idct = FF_IDCT_AUTO;
static enum AVDiscard skip_frame = AVDISCARD_DEFAULT;
static enum AVDiscard skip_idct = AVDISCARD_DEFAULT;
static enum AVDiscard skip_loop_filter = AVDISCARD_DEFAULT;
static int error_concealment = 3;
static int decoder_reorder_pts = -1;
static int autoexit;
static int exit_on_keydown;
static int exit_on_mousedown;
static int loop = 1;
static int framedrop = 1;
static int infinite_buffer = 0;
static int rdftspeed = 20;
#if CONFIG_AVFILTER
static char *vfilters = NULL;
#endif
/* current context */
static int is_full_screen;
static VideoState *cur_stream;
static int64_t audio_callback_time;
static AVPacket flush_pkt;
#define FF_ALLOC_EVENT (SDL_USEREVENT)
#define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
#define FF_QUIT_EVENT (SDL_USEREVENT + 2)
static SDL_Surface *screen;
void exit_program(int ret)
{
exit(ret);
}
static int packet_queue_put(PacketQueue *q, AVPacket *pkt);
/* packet queue handling */
static void packet_queue_init(PacketQueue *q)
{
memset(q, 0, sizeof(PacketQueue));
q->mutex = SDL_CreateMutex();
q->cond = SDL_CreateCond();
packet_queue_put(q, &flush_pkt);
}
static void packet_queue_flush(PacketQueue *q)
{
AVPacketList *pkt, *pkt1;
SDL_LockMutex(q->mutex);
for (pkt = q->first_pkt; pkt != NULL; pkt = pkt1) {
pkt1 = pkt->next;
av_free_packet(&pkt->pkt);
av_freep(&pkt);
}
q->last_pkt = NULL;
q->first_pkt = NULL;
q->nb_packets = 0;
q->size = 0;
SDL_UnlockMutex(q->mutex);
}
static void packet_queue_end(PacketQueue *q)
{
packet_queue_flush(q);
SDL_DestroyMutex(q->mutex);
SDL_DestroyCond(q->cond);
}
static int packet_queue_put(PacketQueue *q, AVPacket *pkt)
{
AVPacketList *pkt1;
/* duplicate the packet */
if (pkt != &flush_pkt && av_dup_packet(pkt) < 0)
return -1;
pkt1 = av_malloc(sizeof(AVPacketList));
if (!pkt1)
return -1;
pkt1->pkt = *pkt;
pkt1->next = NULL;
SDL_LockMutex(q->mutex);
if (!q->last_pkt)
q->first_pkt = pkt1;
else
q->last_pkt->next = pkt1;
q->last_pkt = pkt1;
q->nb_packets++;
q->size += pkt1->pkt.size + sizeof(*pkt1);
/* XXX: should duplicate packet data in DV case */
SDL_CondSignal(q->cond);
SDL_UnlockMutex(q->mutex);
return 0;
}
static void packet_queue_abort(PacketQueue *q)
{
SDL_LockMutex(q->mutex);
q->abort_request = 1;
SDL_CondSignal(q->cond);
SDL_UnlockMutex(q->mutex);
}
/* return < 0 if aborted, 0 if no packet and > 0 if packet. */
static int packet_queue_get(PacketQueue *q, AVPacket *pkt, int block)
{
AVPacketList *pkt1;
int ret;
SDL_LockMutex(q->mutex);
for (;;) {
if (q->abort_request) {
ret = -1;
break;
}
pkt1 = q->first_pkt;
if (pkt1) {
q->first_pkt = pkt1->next;
if (!q->first_pkt)
q->last_pkt = NULL;
q->nb_packets--;
q->size -= pkt1->pkt.size + sizeof(*pkt1);
*pkt = pkt1->pkt;
av_free(pkt1);
ret = 1;
break;
} else if (!block) {
ret = 0;
break;
} else {
SDL_CondWait(q->cond, q->mutex);
}
}
SDL_UnlockMutex(q->mutex);
return ret;
}
static inline void fill_rectangle(SDL_Surface *screen,
int x, int y, int w, int h, int color)
{
SDL_Rect rect;
rect.x = x;
rect.y = y;
rect.w = w;
rect.h = h;
SDL_FillRect(screen, &rect, color);
}
#define ALPHA_BLEND(a, oldp, newp, s)\
((((oldp << s) * (255 - (a))) + (newp * (a))) / (255 << s))
#define RGBA_IN(r, g, b, a, s)\
{\
unsigned int v = ((const uint32_t *)(s))[0];\
a = (v >> 24) & 0xff;\
r = (v >> 16) & 0xff;\
g = (v >> 8) & 0xff;\
b = v & 0xff;\
}
#define YUVA_IN(y, u, v, a, s, pal)\
{\
unsigned int val = ((const uint32_t *)(pal))[*(const uint8_t*)(s)];\
a = (val >> 24) & 0xff;\
y = (val >> 16) & 0xff;\
u = (val >> 8) & 0xff;\
v = val & 0xff;\
}
#define YUVA_OUT(d, y, u, v, a)\
{\
((uint32_t *)(d))[0] = (a << 24) | (y << 16) | (u << 8) | v;\
}
#define BPP 1
static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
{
int wrap, wrap3, width2, skip2;
int y, u, v, a, u1, v1, a1, w, h;
uint8_t *lum, *cb, *cr;
const uint8_t *p;
const uint32_t *pal;
int dstx, dsty, dstw, dsth;
dstw = av_clip(rect->w, 0, imgw);
dsth = av_clip(rect->h, 0, imgh);
dstx = av_clip(rect->x, 0, imgw - dstw);
dsty = av_clip(rect->y, 0, imgh - dsth);
lum = dst->data[0] + dsty * dst->linesize[0];
cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
cr = dst->data[2] + (dsty >> 1) * dst->linesize[2];
width2 = ((dstw + 1) >> 1) + (dstx & ~dstw & 1);
skip2 = dstx >> 1;
wrap = dst->linesize[0];
wrap3 = rect->pict.linesize[0];
p = rect->pict.data[0];
pal = (const uint32_t *)rect->pict.data[1]; /* Now in YCrCb! */
if (dsty & 1) {
lum += dstx;
cb += skip2;
cr += skip2;
if (dstx & 1) {
YUVA_IN(y, u, v, a, p, pal);
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
cb++;
cr++;
lum++;
p += BPP;
}
for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
YUVA_IN(y, u, v, a, p, pal);
u1 = u;
v1 = v;
a1 = a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
YUVA_IN(y, u, v, a, p + BPP, pal);
u1 += u;
v1 += v;
a1 += a;
lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
cb++;
cr++;
p += 2 * BPP;
lum += 2;
}
if (w) {
YUVA_IN(y, u, v, a, p, pal);
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
p++;
lum++;
}
p += wrap3 - dstw * BPP;
lum += wrap - dstw - dstx;
cb += dst->linesize[1] - width2 - skip2;
cr += dst->linesize[2] - width2 - skip2;
}
for (h = dsth - (dsty & 1); h >= 2; h -= 2) {
lum += dstx;
cb += skip2;
cr += skip2;
if (dstx & 1) {
YUVA_IN(y, u, v, a, p, pal);
u1 = u;
v1 = v;
a1 = a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
p += wrap3;
lum += wrap;
YUVA_IN(y, u, v, a, p, pal);
u1 += u;
v1 += v;
a1 += a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
cb++;
cr++;
p += -wrap3 + BPP;
lum += -wrap + 1;
}
for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
YUVA_IN(y, u, v, a, p, pal);
u1 = u;
v1 = v;
a1 = a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
YUVA_IN(y, u, v, a, p + BPP, pal);
u1 += u;
v1 += v;
a1 += a;
lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
p += wrap3;
lum += wrap;
YUVA_IN(y, u, v, a, p, pal);
u1 += u;
v1 += v;
a1 += a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
YUVA_IN(y, u, v, a, p + BPP, pal);
u1 += u;
v1 += v;
a1 += a;
lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 2);
cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 2);
cb++;
cr++;
p += -wrap3 + 2 * BPP;
lum += -wrap + 2;
}
if (w) {
YUVA_IN(y, u, v, a, p, pal);
u1 = u;
v1 = v;
a1 = a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
p += wrap3;
lum += wrap;
YUVA_IN(y, u, v, a, p, pal);
u1 += u;
v1 += v;
a1 += a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u1, 1);
cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v1, 1);
cb++;
cr++;
p += -wrap3 + BPP;
lum += -wrap + 1;
}
p += wrap3 + (wrap3 - dstw * BPP);
lum += wrap + (wrap - dstw - dstx);
cb += dst->linesize[1] - width2 - skip2;
cr += dst->linesize[2] - width2 - skip2;
}
/* handle odd height */
if (h) {
lum += dstx;
cb += skip2;
cr += skip2;
if (dstx & 1) {
YUVA_IN(y, u, v, a, p, pal);
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
cb++;
cr++;
lum++;
p += BPP;
}
for (w = dstw - (dstx & 1); w >= 2; w -= 2) {
YUVA_IN(y, u, v, a, p, pal);
u1 = u;
v1 = v;
a1 = a;
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
YUVA_IN(y, u, v, a, p + BPP, pal);
u1 += u;
v1 += v;
a1 += a;
lum[1] = ALPHA_BLEND(a, lum[1], y, 0);
cb[0] = ALPHA_BLEND(a1 >> 2, cb[0], u, 1);
cr[0] = ALPHA_BLEND(a1 >> 2, cr[0], v, 1);
cb++;
cr++;
p += 2 * BPP;
lum += 2;
}
if (w) {
YUVA_IN(y, u, v, a, p, pal);
lum[0] = ALPHA_BLEND(a, lum[0], y, 0);
cb[0] = ALPHA_BLEND(a >> 2, cb[0], u, 0);
cr[0] = ALPHA_BLEND(a >> 2, cr[0], v, 0);
}
}
}
static void free_subpicture(SubPicture *sp)
{
avsubtitle_free(&sp->sub);
}
static void video_image_display(VideoState *is)
{
VideoPicture *vp;
SubPicture *sp;
AVPicture pict;
float aspect_ratio;
int width, height, x, y;
SDL_Rect rect;
int i;
vp = &is->pictq[is->pictq_rindex];
if (vp->bmp) {
#if CONFIG_AVFILTER
if (vp->picref->video->pixel_aspect.num == 0)
aspect_ratio = 0;
else
aspect_ratio = av_q2d(vp->picref->video->pixel_aspect);
#else
/* XXX: use variable in the frame */
if (is->video_st->sample_aspect_ratio.num)
aspect_ratio = av_q2d(is->video_st->sample_aspect_ratio);
else if (is->video_st->codec->sample_aspect_ratio.num)
aspect_ratio = av_q2d(is->video_st->codec->sample_aspect_ratio);
else
aspect_ratio = 0;
#endif
if (aspect_ratio <= 0.0)
aspect_ratio = 1.0;
aspect_ratio *= (float)vp->width / (float)vp->height;
if (is->subtitle_st)
{
if (is->subpq_size > 0)
{
sp = &is->subpq[is->subpq_rindex];
if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
{
SDL_LockYUVOverlay (vp->bmp);
pict.data[0] = vp->bmp->pixels[0];
pict.data[1] = vp->bmp->pixels[2];
pict.data[2] = vp->bmp->pixels[1];
pict.linesize[0] = vp->bmp->pitches[0];
pict.linesize[1] = vp->bmp->pitches[2];
pict.linesize[2] = vp->bmp->pitches[1];
for (i = 0; i < sp->sub.num_rects; i++)
blend_subrect(&pict, sp->sub.rects[i],
vp->bmp->w, vp->bmp->h);
SDL_UnlockYUVOverlay (vp->bmp);
}
}
}
/* XXX: we suppose the screen has a 1.0 pixel ratio */
height = is->height;
width = ((int)rint(height * aspect_ratio)) & ~1;
if (width > is->width) {
width = is->width;
height = ((int)rint(width / aspect_ratio)) & ~1;
}
x = (is->width - width) / 2;
y = (is->height - height) / 2;
is->no_background = 0;
rect.x = is->xleft + x;
rect.y = is->ytop + y;
rect.w = width;
rect.h = height;
SDL_DisplayYUVOverlay(vp->bmp, &rect);
}
}
/* get the current audio output buffer size, in samples. With SDL, we
cannot have a precise information */
static int audio_write_get_buf_size(VideoState *is)
{
return is->audio_buf_size - is->audio_buf_index;
}
static inline int compute_mod(int a, int b)
{
a = a % b;
if (a >= 0)
return a;
else
return a + b;
}
static void video_audio_display(VideoState *s)
{
int i, i_start, x, y1, y, ys, delay, n, nb_display_channels;
int ch, channels, h, h2, bgcolor, fgcolor;
int16_t time_diff;
int rdft_bits, nb_freq;
for (rdft_bits = 1; (1 << rdft_bits) < 2 * s->height; rdft_bits++)
;
nb_freq = 1 << (rdft_bits - 1);
/* compute display index : center on currently output samples */
channels = s->sdl_channels;
nb_display_channels = channels;
if (!s->paused) {
int data_used = s->show_audio == 1 ? s->width : (2 * nb_freq);
n = 2 * channels;
delay = audio_write_get_buf_size(s);
delay /= n;
/* to be more precise, we take into account the time spent since
the last buffer computation */
if (audio_callback_time) {
time_diff = av_gettime() - audio_callback_time;
delay -= (time_diff * s->audio_st->codec->sample_rate) / 1000000;
}
delay += 2 * data_used;
if (delay < data_used)
delay = data_used;
i_start= x = compute_mod(s->sample_array_index - delay * channels, SAMPLE_ARRAY_SIZE);
if (s->show_audio == 1) {
h = INT_MIN;
for (i = 0; i < 1000; i += channels) {
int idx = (SAMPLE_ARRAY_SIZE + x - i) % SAMPLE_ARRAY_SIZE;
int a = s->sample_array[idx];
int b = s->sample_array[(idx + 4 * channels) % SAMPLE_ARRAY_SIZE];
int c = s->sample_array[(idx + 5 * channels) % SAMPLE_ARRAY_SIZE];
int d = s->sample_array[(idx + 9 * channels) % SAMPLE_ARRAY_SIZE];
int score = a - d;
if (h < score && (b ^ c) < 0) {
h = score;
i_start = idx;
}
}
}
s->last_i_start = i_start;
} else {
i_start = s->last_i_start;
}
bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
if (s->show_audio == 1) {
fill_rectangle(screen,
s->xleft, s->ytop, s->width, s->height,
bgcolor);
fgcolor = SDL_MapRGB(screen->format, 0xff, 0xff, 0xff);
/* total height for one channel */
h = s->height / nb_display_channels;
/* graph height / 2 */
h2 = (h * 9) / 20;
for (ch = 0; ch < nb_display_channels; ch++) {
i = i_start + ch;
y1 = s->ytop + ch * h + (h / 2); /* position of center line */
for (x = 0; x < s->width; x++) {
y = (s->sample_array[i] * h2) >> 15;
if (y < 0) {
y = -y;
ys = y1 - y;
} else {
ys = y1;
}
fill_rectangle(screen,
s->xleft + x, ys, 1, y,
fgcolor);
i += channels;
if (i >= SAMPLE_ARRAY_SIZE)
i -= SAMPLE_ARRAY_SIZE;
}
}
fgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0xff);
for (ch = 1; ch < nb_display_channels; ch++) {
y = s->ytop + ch * h;
fill_rectangle(screen,
s->xleft, y, s->width, 1,
fgcolor);
}
SDL_UpdateRect(screen, s->xleft, s->ytop, s->width, s->height);
} else {
nb_display_channels= FFMIN(nb_display_channels, 2);
if (rdft_bits != s->rdft_bits) {
av_rdft_end(s->rdft);
av_free(s->rdft_data);
s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
s->rdft_bits = rdft_bits;
s->rdft_data = av_malloc(4 * nb_freq * sizeof(*s->rdft_data));
}
{
FFTSample *data[2];
for (ch = 0; ch < nb_display_channels; ch++) {
data[ch] = s->rdft_data + 2 * nb_freq * ch;
i = i_start + ch;
for (x = 0; x < 2 * nb_freq; x++) {
double w = (x-nb_freq) * (1.0 / nb_freq);
data[ch][x] = s->sample_array[i] * (1.0 - w * w);
i += channels;
if (i >= SAMPLE_ARRAY_SIZE)
i -= SAMPLE_ARRAY_SIZE;
}
av_rdft_calc(s->rdft, data[ch]);
}
// least efficient way to do this, we should of course directly access it but its more than fast enough
for (y = 0; y < s->height; y++) {
double w = 1 / sqrt(nb_freq);
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]));
int b = (nb_display_channels == 2 ) ? sqrt(w * sqrt(data[1][2 * y + 0] * data[1][2 * y + 0]
+ data[1][2 * y + 1] * data[1][2 * y + 1])) : a;
a = FFMIN(a, 255);
b = FFMIN(b, 255);
fgcolor = SDL_MapRGB(screen->format, a, b, (a + b) / 2);
fill_rectangle(screen,
s->xpos, s->height-y, 1, 1,
fgcolor);
}
}
SDL_UpdateRect(screen, s->xpos, s->ytop, 1, s->height);
s->xpos++;
if (s->xpos >= s->width)
s->xpos= s->xleft;
}
}
static int video_open(VideoState *is)
{
int flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
int w,h;
if (is_full_screen) flags |= SDL_FULLSCREEN;
else flags |= SDL_RESIZABLE;
if (is_full_screen && fs_screen_width) {
w = fs_screen_width;
h = fs_screen_height;
} else if (!is_full_screen && screen_width) {
w = screen_width;
h = screen_height;
#if CONFIG_AVFILTER
} else if (is->out_video_filter && is->out_video_filter->inputs[0]) {
w = is->out_video_filter->inputs[0]->w;
h = is->out_video_filter->inputs[0]->h;
#else
} else if (is->video_st && is->video_st->codec->width) {
w = is->video_st->codec->width;
h = is->video_st->codec->height;
#endif
} else {
w = 640;
h = 480;
}
if (screen && is->width == screen->w && screen->w == w
&& is->height== screen->h && screen->h == h)
return 0;
#if defined(__APPLE__) && !SDL_VERSION_ATLEAST(1, 2, 14)
/* setting bits_per_pixel = 0 or 32 causes blank video on OS X and older SDL */
screen = SDL_SetVideoMode(w, h, 24, flags);
#else
screen = SDL_SetVideoMode(w, h, 0, flags);
#endif
if (!screen) {
fprintf(stderr, "SDL: could not set video mode - exiting\n");
return -1;
}
if (!window_title)
window_title = input_filename;
SDL_WM_SetCaption(window_title, window_title);
is->width = screen->w;
is->height = screen->h;
return 0;
}
/* display the current picture, if any */
static void video_display(VideoState *is)
{
if (!screen)
video_open(cur_stream);
if (is->audio_st && is->show_audio)
video_audio_display(is);
else if (is->video_st)
video_image_display(is);
}
static int refresh_thread(void *opaque)
{
VideoState *is= opaque;
while (!is->abort_request) {
SDL_Event event;
event.type = FF_REFRESH_EVENT;
event.user.data1 = opaque;
if (!is->refresh) {
is->refresh = 1;
SDL_PushEvent(&event);
}
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
}
return 0;
}
/* get the current audio clock value */
static double get_audio_clock(VideoState *is)
{
double pts;
int hw_buf_size, bytes_per_sec;
pts = is->audio_clock;
hw_buf_size = audio_write_get_buf_size(is);
bytes_per_sec = 0;
if (is->audio_st) {
bytes_per_sec = is->audio_st->codec->sample_rate * is->sdl_channels *
av_get_bytes_per_sample(is->sdl_sample_fmt);
}
if (bytes_per_sec)
pts -= (double)hw_buf_size / bytes_per_sec;
return pts;
}
/* get the current video clock value */
static double get_video_clock(VideoState *is)
{
if (is->paused) {
return is->video_current_pts;
} else {
return is->video_current_pts_drift + av_gettime() / 1000000.0;
}
}
/* get the current external clock value */
static double get_external_clock(VideoState *is)
{
int64_t ti;
ti = av_gettime();
return is->external_clock + ((ti - is->external_clock_time) * 1e-6);
}
/* get the current master clock value */
static double get_master_clock(VideoState *is)
{
double val;
if (is->av_sync_type == AV_SYNC_VIDEO_MASTER) {
if (is->video_st)
val = get_video_clock(is);
else
val = get_audio_clock(is);
} else if (is->av_sync_type == AV_SYNC_AUDIO_MASTER) {
if (is->audio_st)
val = get_audio_clock(is);
else
val = get_video_clock(is);
} else {
val = get_external_clock(is);
}
return val;
}
/* seek in the stream */
static void stream_seek(VideoState *is, int64_t pos, int64_t rel, int seek_by_bytes)
{
if (!is->seek_req) {
is->seek_pos = pos;
is->seek_rel = rel;
is->seek_flags &= ~AVSEEK_FLAG_BYTE;
if (seek_by_bytes)
is->seek_flags |= AVSEEK_FLAG_BYTE;
is->seek_req = 1;
}
}
/* pause or resume the video */
static void stream_pause(VideoState *is)
{
if (is->paused) {
is->frame_timer += av_gettime() / 1000000.0 + is->video_current_pts_drift - is->video_current_pts;
if (is->read_pause_return != AVERROR(ENOSYS)) {
is->video_current_pts = is->video_current_pts_drift + av_gettime() / 1000000.0;
}
is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
}
is->paused = !is->paused;
}
static double compute_target_time(double frame_current_pts, VideoState *is)
{
double delay, sync_threshold, diff;
/* compute nominal delay */
delay = frame_current_pts - is->frame_last_pts;
if (delay <= 0 || delay >= 10.0) {
/* if incorrect delay, use previous one */
delay = is->frame_last_delay;
} else {
is->frame_last_delay = delay;
}
is->frame_last_pts = frame_current_pts;
/* update delay to follow master synchronisation source */
if (((is->av_sync_type == AV_SYNC_AUDIO_MASTER && is->audio_st) ||
is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
/* if video is slave, we try to correct big delays by
duplicating or deleting a frame */
diff = get_video_clock(is) - get_master_clock(is);
/* skip or repeat frame. We take into account the
delay to compute the threshold. I still don't know
if it is the best guess */
sync_threshold = FFMAX(AV_SYNC_THRESHOLD, delay);
if (fabs(diff) < AV_NOSYNC_THRESHOLD) {
if (diff <= -sync_threshold)
delay = 0;
else if (diff >= sync_threshold)
delay = 2 * delay;
}
}
is->frame_timer += delay;
av_dlog(NULL, "video: delay=%0.3f pts=%0.3f A-V=%f\n",
delay, frame_current_pts, -diff);
return is->frame_timer;
}
/* called to display each frame */
static void video_refresh_timer(void *opaque)
{
VideoState *is = opaque;
VideoPicture *vp;
SubPicture *sp, *sp2;
if (is->video_st) {
retry:
if (is->pictq_size == 0) {
// nothing to do, no picture to display in the que
} else {
double time = av_gettime() / 1000000.0;
double next_target;
/* dequeue the picture */
vp = &is->pictq[is->pictq_rindex];
if (time < vp->target_clock)
return;
/* update current video pts */
is->video_current_pts = vp->pts;
is->video_current_pts_drift = is->video_current_pts - time;
is->video_current_pos = vp->pos;
if (is->pictq_size > 1) {
VideoPicture *nextvp = &is->pictq[(is->pictq_rindex + 1) % VIDEO_PICTURE_QUEUE_SIZE];
assert(nextvp->target_clock >= vp->target_clock);
next_target= nextvp->target_clock;
} else {
next_target = vp->target_clock + is->video_clock - vp->pts; // FIXME pass durations cleanly
}
if (framedrop && time > next_target) {
is->skip_frames *= 1.0 + FRAME_SKIP_FACTOR;
if (is->pictq_size > 1 || time > next_target + 0.5) {
/* update queue size and signal for next picture */
if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
is->pictq_rindex = 0;
SDL_LockMutex(is->pictq_mutex);
is->pictq_size--;
SDL_CondSignal(is->pictq_cond);
SDL_UnlockMutex(is->pictq_mutex);
goto retry;
}
}
if (is->subtitle_st) {
if (is->subtitle_stream_changed) {
SDL_LockMutex(is->subpq_mutex);
while (is->subpq_size) {
free_subpicture(&is->subpq[is->subpq_rindex]);
/* update queue size and signal for next picture */
if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
is->subpq_rindex = 0;
is->subpq_size--;
}
is->subtitle_stream_changed = 0;
SDL_CondSignal(is->subpq_cond);
SDL_UnlockMutex(is->subpq_mutex);
} else {
if (is->subpq_size > 0) {
sp = &is->subpq[is->subpq_rindex];
if (is->subpq_size > 1)
sp2 = &is->subpq[(is->subpq_rindex + 1) % SUBPICTURE_QUEUE_SIZE];
else
sp2 = NULL;
if ((is->video_current_pts > (sp->pts + ((float) sp->sub.end_display_time / 1000)))
|| (sp2 && is->video_current_pts > (sp2->pts + ((float) sp2->sub.start_display_time / 1000))))
{
free_subpicture(sp);
/* update queue size and signal for next picture */
if (++is->subpq_rindex == SUBPICTURE_QUEUE_SIZE)
is->subpq_rindex = 0;
SDL_LockMutex(is->subpq_mutex);
is->subpq_size--;
SDL_CondSignal(is->subpq_cond);
SDL_UnlockMutex(is->subpq_mutex);
}
}
}
}
/* display picture */
if (!display_disable)
video_display(is);
/* update queue size and signal for next picture */
if (++is->pictq_rindex == VIDEO_PICTURE_QUEUE_SIZE)
is->pictq_rindex = 0;
SDL_LockMutex(is->pictq_mutex);
is->pictq_size--;
SDL_CondSignal(is->pictq_cond);
SDL_UnlockMutex(is->pictq_mutex);
}
} else if (is->audio_st) {
/* draw the next audio frame */
/* if only audio stream, then display the audio bars (better
than nothing, just to test the implementation */
/* display picture */
if (!display_disable)
video_display(is);
}
if (show_status) {
static int64_t last_time;
int64_t cur_time;
int aqsize, vqsize, sqsize;
double av_diff;
cur_time = av_gettime();
if (!last_time || (cur_time - last_time) >= 30000) {
aqsize = 0;
vqsize = 0;
sqsize = 0;
if (is->audio_st)
aqsize = is->audioq.size;
if (is->video_st)
vqsize = is->videoq.size;
if (is->subtitle_st)
sqsize = is->subtitleq.size;
av_diff = 0;
if (is->audio_st && is->video_st)
av_diff = get_audio_clock(is) - get_video_clock(is);
printf("%7.2f A-V:%7.3f s:%3.1f aq=%5dKB vq=%5dKB sq=%5dB f=%"PRId64"/%"PRId64" \r",
get_master_clock(is), av_diff, FFMAX(is->skip_frames - 1, 0), aqsize / 1024,
vqsize / 1024, sqsize, is->pts_ctx.num_faulty_dts, is->pts_ctx.num_faulty_pts);
fflush(stdout);
last_time = cur_time;
}
}
}
static void stream_close(VideoState *is)
{
VideoPicture *vp;
int i;
/* XXX: use a special url_shutdown call to abort parse cleanly */
is->abort_request = 1;
SDL_WaitThread(is->parse_tid, NULL);
SDL_WaitThread(is->refresh_tid, NULL);
/* free all pictures */
for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
vp = &is->pictq[i];
#if CONFIG_AVFILTER
avfilter_unref_bufferp(&vp->picref);
#endif
if (vp->bmp) {
SDL_FreeYUVOverlay(vp->bmp);
vp->bmp = NULL;
}
}
SDL_DestroyMutex(is->pictq_mutex);
SDL_DestroyCond(is->pictq_cond);
SDL_DestroyMutex(is->subpq_mutex);
SDL_DestroyCond(is->subpq_cond);
#if !CONFIG_AVFILTER
if (is->img_convert_ctx)
sws_freeContext(is->img_convert_ctx);
#endif
av_free(is);
}
static void do_exit(void)
{
if (cur_stream) {
stream_close(cur_stream);
cur_stream = NULL;
}
uninit_opts();
#if CONFIG_AVFILTER
avfilter_uninit();
#endif
avformat_network_deinit();
if (show_status)
printf("\n");
SDL_Quit();
av_log(NULL, AV_LOG_QUIET, "");
exit(0);
}
/* allocate a picture (needs to do that in main thread to avoid
potential locking problems */
static void alloc_picture(void *opaque)
{
VideoState *is = opaque;
VideoPicture *vp;
vp = &is->pictq[is->pictq_windex];
if (vp->bmp)
SDL_FreeYUVOverlay(vp->bmp);
#if CONFIG_AVFILTER
avfilter_unref_bufferp(&vp->picref);
vp->width = is->out_video_filter->inputs[0]->w;
vp->height = is->out_video_filter->inputs[0]->h;
vp->pix_fmt = is->out_video_filter->inputs[0]->format;
#else
vp->width = is->video_st->codec->width;
vp->height = is->video_st->codec->height;
vp->pix_fmt = is->video_st->codec->pix_fmt;
#endif
vp->bmp = SDL_CreateYUVOverlay(vp->width, vp->height,
SDL_YV12_OVERLAY,
screen);
if (!vp->bmp || vp->bmp->pitches[0] < vp->width) {
/* SDL allocates a buffer smaller than requested if the video
* overlay hardware is unable to support the requested size. */
fprintf(stderr, "Error: the video system does not support an image\n"
"size of %dx%d pixels. Try using -vf \"scale=w:h\"\n"
"to reduce the image size.\n", vp->width, vp->height );
do_exit();
}
SDL_LockMutex(is->pictq_mutex);
vp->allocated = 1;
SDL_CondSignal(is->pictq_cond);
SDL_UnlockMutex(is->pictq_mutex);
}
/**
*
* @param pts the dts of the pkt / pts of the frame and guessed if not known
*/
static int queue_picture(VideoState *is, AVFrame *src_frame, double pts, int64_t pos)
{
VideoPicture *vp;
#if CONFIG_AVFILTER
AVPicture pict_src;
#else
int dst_pix_fmt = PIX_FMT_YUV420P;
#endif
/* wait until we have space to put a new picture */
SDL_LockMutex(is->pictq_mutex);
if (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE && !is->refresh)
is->skip_frames = FFMAX(1.0 - FRAME_SKIP_FACTOR, is->skip_frames * (1.0 - FRAME_SKIP_FACTOR));
while (is->pictq_size >= VIDEO_PICTURE_QUEUE_SIZE &&
!is->videoq.abort_request) {
SDL_CondWait(is->pictq_cond, is->pictq_mutex);
}
SDL_UnlockMutex(is->pictq_mutex);
if (is->videoq.abort_request)
return -1;
vp = &is->pictq[is->pictq_windex];
/* alloc or resize hardware picture buffer */
if (!vp->bmp || vp->reallocate ||
#if CONFIG_AVFILTER
vp->width != is->out_video_filter->inputs[0]->w ||
vp->height != is->out_video_filter->inputs[0]->h) {
#else
vp->width != is->video_st->codec->width ||
vp->height != is->video_st->codec->height) {
#endif
SDL_Event event;
vp->allocated = 0;
vp->reallocate = 0;
/* the allocation must be done in the main thread to avoid
locking problems */
event.type = FF_ALLOC_EVENT;
event.user.data1 = is;
SDL_PushEvent(&event);
/* wait until the picture is allocated */
SDL_LockMutex(is->pictq_mutex);
while (!vp->allocated && !is->videoq.abort_request) {
SDL_CondWait(is->pictq_cond, is->pictq_mutex);
}
SDL_UnlockMutex(is->pictq_mutex);
if (is->videoq.abort_request)
return -1;
}
/* if the frame is not skipped, then display it */
if (vp->bmp) {
AVPicture pict = { { 0 } };
#if CONFIG_AVFILTER
avfilter_unref_bufferp(&vp->picref);
vp->picref = src_frame->opaque;
#endif
/* get a pointer on the bitmap */
SDL_LockYUVOverlay (vp->bmp);
pict.data[0] = vp->bmp->pixels[0];
pict.data[1] = vp->bmp->pixels[2];
pict.data[2] = vp->bmp->pixels[1];
pict.linesize[0] = vp->bmp->pitches[0];
pict.linesize[1] = vp->bmp->pitches[2];
pict.linesize[2] = vp->bmp->pitches[1];
#if CONFIG_AVFILTER
pict_src.data[0] = src_frame->data[0];
pict_src.data[1] = src_frame->data[1];
pict_src.data[2] = src_frame->data[2];
pict_src.linesize[0] = src_frame->linesize[0];
pict_src.linesize[1] = src_frame->linesize[1];
pict_src.linesize[2] = src_frame->linesize[2];
// FIXME use direct rendering
av_picture_copy(&pict, &pict_src,
vp->pix_fmt, vp->width, vp->height);
#else
sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
vp->width, vp->height, vp->pix_fmt, vp->width, vp->height,
dst_pix_fmt, sws_flags, NULL, NULL, NULL);
if (is->img_convert_ctx == NULL) {
fprintf(stderr, "Cannot initialize the conversion context\n");
exit(1);
}
sws_scale(is->img_convert_ctx, src_frame->data, src_frame->linesize,
0, vp->height, pict.data, pict.linesize);
#endif
/* update the bitmap content */
SDL_UnlockYUVOverlay(vp->bmp);
vp->pts = pts;
vp->pos = pos;
/* now we can update the picture count */
if (++is->pictq_windex == VIDEO_PICTURE_QUEUE_SIZE)
is->pictq_windex = 0;
SDL_LockMutex(is->pictq_mutex);
vp->target_clock = compute_target_time(vp->pts, is);
is->pictq_size++;
SDL_UnlockMutex(is->pictq_mutex);
}
return 0;
}
/**
* compute the exact PTS for the picture if it is omitted in the stream
* @param pts1 the dts of the pkt / pts of the frame
*/
static int output_picture2(VideoState *is, AVFrame *src_frame, double pts1, int64_t pos)
{
double frame_delay, pts;
pts = pts1;
if (pts != 0) {
/* update video clock with pts, if present */
is->video_clock = pts;
} else {
pts = is->video_clock;
}
/* update video clock for next frame */
frame_delay = av_q2d(is->video_st->codec->time_base);
/* for MPEG2, the frame can be repeated, so we update the
clock accordingly */
frame_delay += src_frame->repeat_pict * (frame_delay * 0.5);
is->video_clock += frame_delay;
return queue_picture(is, src_frame, pts, pos);
}
static int get_video_frame(VideoState *is, AVFrame *frame, int64_t *pts, AVPacket *pkt)
{
int got_picture, i;
if (packet_queue_get(&is->videoq, pkt, 1) < 0)
return -1;
if (pkt->data == flush_pkt.data) {
avcodec_flush_buffers(is->video_st->codec);
SDL_LockMutex(is->pictq_mutex);
// Make sure there are no long delay timers (ideally we should just flush the que but thats harder)
for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++) {
is->pictq[i].target_clock= 0;
}
while (is->pictq_size && !is->videoq.abort_request) {
SDL_CondWait(is->pictq_cond, is->pictq_mutex);
}
is->video_current_pos = -1;
SDL_UnlockMutex(is->pictq_mutex);
init_pts_correction(&is->pts_ctx);
is->frame_last_pts = AV_NOPTS_VALUE;
is->frame_last_delay = 0;
is->frame_timer = (double)av_gettime() / 1000000.0;
is->skip_frames = 1;
is->skip_frames_index = 0;
return 0;
}
avcodec_decode_video2(is->video_st->codec, frame, &got_picture, pkt);
if (got_picture) {
if (decoder_reorder_pts == -1) {
*pts = guess_correct_pts(&is->pts_ctx, frame->pkt_pts, frame->pkt_dts);
} else if (decoder_reorder_pts) {
*pts = frame->pkt_pts;
} else {
*pts = frame->pkt_dts;
}
if (*pts == AV_NOPTS_VALUE) {
*pts = 0;
}
is->skip_frames_index += 1;
if (is->skip_frames_index >= is->skip_frames) {
is->skip_frames_index -= FFMAX(is->skip_frames, 1.0);
return 1;
}
}
return 0;
}
#if CONFIG_AVFILTER
static int configure_video_filters(AVFilterGraph *graph, VideoState *is, const char *vfilters)
{
char sws_flags_str[128];
char buffersrc_args[256];
int ret;
AVFilterContext *filt_src = NULL, *filt_out = NULL, *filt_format;
AVCodecContext *codec = is->video_st->codec;
snprintf(sws_flags_str, sizeof(sws_flags_str), "flags=%d", sws_flags);
graph->scale_sws_opts = av_strdup(sws_flags_str);
snprintf(buffersrc_args, sizeof(buffersrc_args), "%d:%d:%d:%d:%d:%d:%d",
codec->width, codec->height, codec->pix_fmt,
is->video_st->time_base.num, is->video_st->time_base.den,
codec->sample_aspect_ratio.num, codec->sample_aspect_ratio.den);
if ((ret = avfilter_graph_create_filter(&filt_src,
avfilter_get_by_name("buffer"),
"src", buffersrc_args, NULL,
graph)) < 0)
return ret;
if ((ret = avfilter_graph_create_filter(&filt_out,
avfilter_get_by_name("buffersink"),
"out", NULL, NULL, graph)) < 0)
return ret;
if ((ret = avfilter_graph_create_filter(&filt_format,
avfilter_get_by_name("format"),
"format", "yuv420p", NULL, graph)) < 0)
return ret;
if ((ret = avfilter_link(filt_format, 0, filt_out, 0)) < 0)
return ret;
if (vfilters) {
AVFilterInOut *outputs = avfilter_inout_alloc();
AVFilterInOut *inputs = avfilter_inout_alloc();
outputs->name = av_strdup("in");
outputs->filter_ctx = filt_src;
outputs->pad_idx = 0;
outputs->next = NULL;
inputs->name = av_strdup("out");
inputs->filter_ctx = filt_format;
inputs->pad_idx = 0;
inputs->next = NULL;
if ((ret = avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL)) < 0)
return ret;
} else {
if ((ret = avfilter_link(filt_src, 0, filt_format, 0)) < 0)
return ret;
}
if ((ret = avfilter_graph_config(graph, NULL)) < 0)
return ret;
is->in_video_filter = filt_src;
is->out_video_filter = filt_out;
if (codec->codec->capabilities & CODEC_CAP_DR1) {
is->use_dr1 = 1;
codec->get_buffer = codec_get_buffer;
codec->release_buffer = codec_release_buffer;
codec->opaque = &is->buffer_pool;
}
return ret;
}
#endif /* CONFIG_AVFILTER */
static int video_thread(void *arg)
{
AVPacket pkt = { 0 };
VideoState *is = arg;
AVFrame *frame = avcodec_alloc_frame();
int64_t pts_int;
double pts;
int ret;
#if CONFIG_AVFILTER
AVFilterGraph *graph = avfilter_graph_alloc();
AVFilterContext *filt_out = NULL, *filt_in = NULL;
int64_t pos;
int last_w = is->video_st->codec->width;
int last_h = is->video_st->codec->height;
if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
goto the_end;
filt_in = is->in_video_filter;
filt_out = is->out_video_filter;
#endif
for (;;) {
#if CONFIG_AVFILTER
AVFilterBufferRef *picref;
AVRational tb;
#endif
while (is->paused && !is->videoq.abort_request)
SDL_Delay(10);
av_free_packet(&pkt);
ret = get_video_frame(is, frame, &pts_int, &pkt);
if (ret < 0)
goto the_end;
if (!ret)
continue;
#if CONFIG_AVFILTER
if ( last_w != is->video_st->codec->width
|| last_h != is->video_st->codec->height) {
av_dlog(NULL, "Changing size %dx%d -> %dx%d\n", last_w, last_h,
is->video_st->codec->width, is->video_st->codec->height);
avfilter_graph_free(&graph);
graph = avfilter_graph_alloc();
if ((ret = configure_video_filters(graph, is, vfilters)) < 0)
goto the_end;
filt_in = is->in_video_filter;
filt_out = is->out_video_filter;
last_w = is->video_st->codec->width;
last_h = is->video_st->codec->height;
}
frame->pts = pts_int;
if (is->use_dr1) {
FrameBuffer *buf = frame->opaque;
AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
frame->data, frame->linesize,
AV_PERM_READ | AV_PERM_PRESERVE,
frame->width, frame->height,
frame->format);
avfilter_copy_frame_props(fb, frame);
fb->buf->priv = buf;
fb->buf->free = filter_release_buffer;
buf->refcount++;
av_buffersrc_buffer(filt_in, fb);
} else
av_buffersrc_write_frame(filt_in, frame);
while (ret >= 0) {
ret = av_buffersink_read(filt_out, &picref);
if (ret < 0) {
ret = 0;
break;
}
avfilter_copy_buf_props(frame, picref);
pts_int = picref->pts;
tb = filt_out->inputs[0]->time_base;
pos = picref->pos;
frame->opaque = picref;
if (av_cmp_q(tb, is->video_st->time_base)) {
av_unused int64_t pts1 = pts_int;
pts_int = av_rescale_q(pts_int, tb, is->video_st->time_base);
av_dlog(NULL, "video_thread(): "
"tb:%d/%d pts:%"PRId64" -> tb:%d/%d pts:%"PRId64"\n",
tb.num, tb.den, pts1,
is->video_st->time_base.num, is->video_st->time_base.den, pts_int);
}
pts = pts_int * av_q2d(is->video_st->time_base);
ret = output_picture2(is, frame, pts, pos);
}
#else
pts = pts_int * av_q2d(is->video_st->time_base);
ret = output_picture2(is, frame, pts, pkt.pos);
#endif
if (ret < 0)
goto the_end;
if (step)
if (cur_stream)
stream_pause(cur_stream);
}
the_end:
#if CONFIG_AVFILTER
av_freep(&vfilters);
avfilter_graph_free(&graph);
#endif
av_free_packet(&pkt);
av_free(frame);
return 0;
}
static int subtitle_thread(void *arg)
{
VideoState *is = arg;
SubPicture *sp;
AVPacket pkt1, *pkt = &pkt1;
int got_subtitle;
double pts;
int i, j;
int r, g, b, y, u, v, a;
for (;;) {
while (is->paused && !is->subtitleq.abort_request) {
SDL_Delay(10);
}
if (packet_queue_get(&is->subtitleq, pkt, 1) < 0)
break;
if (pkt->data == flush_pkt.data) {
avcodec_flush_buffers(is->subtitle_st->codec);
continue;
}
SDL_LockMutex(is->subpq_mutex);
while (is->subpq_size >= SUBPICTURE_QUEUE_SIZE &&
!is->subtitleq.abort_request) {
SDL_CondWait(is->subpq_cond, is->subpq_mutex);
}
SDL_UnlockMutex(is->subpq_mutex);
if (is->subtitleq.abort_request)
return 0;
sp = &is->subpq[is->subpq_windex];
/* NOTE: ipts is the PTS of the _first_ picture beginning in
this packet, if any */
pts = 0;
if (pkt->pts != AV_NOPTS_VALUE)
pts = av_q2d(is->subtitle_st->time_base) * pkt->pts;
avcodec_decode_subtitle2(is->subtitle_st->codec, &sp->sub,
&got_subtitle, pkt);
if (got_subtitle && sp->sub.format == 0) {
sp->pts = pts;
for (i = 0; i < sp->sub.num_rects; i++)
{
for (j = 0; j < sp->sub.rects[i]->nb_colors; j++)
{
RGBA_IN(r, g, b, a, (uint32_t*)sp->sub.rects[i]->pict.data[1] + j);
y = RGB_TO_Y_CCIR(r, g, b);
u = RGB_TO_U_CCIR(r, g, b, 0);
v = RGB_TO_V_CCIR(r, g, b, 0);
YUVA_OUT((uint32_t*)sp->sub.rects[i]->pict.data[1] + j, y, u, v, a);
}
}
/* now we can update the picture count */
if (++is->subpq_windex == SUBPICTURE_QUEUE_SIZE)
is->subpq_windex = 0;
SDL_LockMutex(is->subpq_mutex);
is->subpq_size++;
SDL_UnlockMutex(is->subpq_mutex);
}
av_free_packet(pkt);
}
return 0;
}
/* copy samples for viewing in editor window */
static void update_sample_display(VideoState *is, short *samples, int samples_size)
{
int size, len;
size = samples_size / sizeof(short);
while (size > 0) {
len = SAMPLE_ARRAY_SIZE - is->sample_array_index;
if (len > size)
len = size;
memcpy(is->sample_array + is->sample_array_index, samples, len * sizeof(short));
samples += len;
is->sample_array_index += len;
if (is->sample_array_index >= SAMPLE_ARRAY_SIZE)
is->sample_array_index = 0;
size -= len;
}
}
/* return the new audio buffer size (samples can be added or deleted
to get better sync if video or external master clock) */
static int synchronize_audio(VideoState *is, short *samples,
int samples_size1, double pts)
{
int n, samples_size;
double ref_clock;
n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
samples_size = samples_size1;
/* if not master, then we try to remove or add samples to correct the clock */
if (((is->av_sync_type == AV_SYNC_VIDEO_MASTER && is->video_st) ||
is->av_sync_type == AV_SYNC_EXTERNAL_CLOCK)) {
double diff, avg_diff;
int wanted_size, min_size, max_size, nb_samples;
ref_clock = get_master_clock(is);
diff = get_audio_clock(is) - ref_clock;
if (diff < AV_NOSYNC_THRESHOLD) {
is->audio_diff_cum = diff + is->audio_diff_avg_coef * is->audio_diff_cum;
if (is->audio_diff_avg_count < AUDIO_DIFF_AVG_NB) {
/* not enough measures to have a correct estimate */
is->audio_diff_avg_count++;
} else {
/* estimate the A-V difference */
avg_diff = is->audio_diff_cum * (1.0 - is->audio_diff_avg_coef);
if (fabs(avg_diff) >= is->audio_diff_threshold) {
wanted_size = samples_size + ((int)(diff * is->audio_st->codec->sample_rate) * n);
nb_samples = samples_size / n;
min_size = ((nb_samples * (100 - SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
max_size = ((nb_samples * (100 + SAMPLE_CORRECTION_PERCENT_MAX)) / 100) * n;
if (wanted_size < min_size)
wanted_size = min_size;
else if (wanted_size > max_size)
wanted_size = max_size;
/* add or remove samples to correction the synchro */
if (wanted_size < samples_size) {
/* remove samples */
samples_size = wanted_size;
} else if (wanted_size > samples_size) {
uint8_t *samples_end, *q;
int nb;
/* add samples */
nb = (samples_size - wanted_size);
samples_end = (uint8_t *)samples + samples_size - n;
q = samples_end + n;
while (nb > 0) {
memcpy(q, samples_end, n);
q += n;
nb -= n;
}
samples_size = wanted_size;
}
}
av_dlog(NULL, "diff=%f adiff=%f sample_diff=%d apts=%0.3f vpts=%0.3f %f\n",
diff, avg_diff, samples_size - samples_size1,
is->audio_clock, is->video_clock, is->audio_diff_threshold);
}
} else {
/* too big difference : may be initial PTS errors, so
reset A-V filter */
is->audio_diff_avg_count = 0;
is->audio_diff_cum = 0;
}
}
return samples_size;
}
/* decode one audio frame and returns its uncompressed size */
static int audio_decode_frame(VideoState *is, double *pts_ptr)
{
AVPacket *pkt_temp = &is->audio_pkt_temp;
AVPacket *pkt = &is->audio_pkt;
AVCodecContext *dec = is->audio_st->codec;
int n, len1, data_size, got_frame;
double pts;
int new_packet = 0;
int flush_complete = 0;
for (;;) {
/* NOTE: the audio packet can contain several frames */
while (pkt_temp->size > 0 || (!pkt_temp->data && new_packet)) {
int resample_changed, audio_resample;
if (!is->frame) {
if (!(is->frame = avcodec_alloc_frame()))
return AVERROR(ENOMEM);
} else
avcodec_get_frame_defaults(is->frame);
if (flush_complete)
break;
new_packet = 0;
len1 = avcodec_decode_audio4(dec, is->frame, &got_frame, pkt_temp);
if (len1 < 0) {
/* if error, we skip the frame */
pkt_temp->size = 0;
break;
}
pkt_temp->data += len1;
pkt_temp->size -= len1;
if (!got_frame) {
/* stop sending empty packets if the decoder is finished */
if (!pkt_temp->data && dec->codec->capabilities & CODEC_CAP_DELAY)
flush_complete = 1;
continue;
}
data_size = av_samples_get_buffer_size(NULL, dec->channels,
is->frame->nb_samples,
dec->sample_fmt, 1);
audio_resample = dec->sample_fmt != is->sdl_sample_fmt ||
dec->channel_layout != is->sdl_channel_layout;
resample_changed = dec->sample_fmt != is->resample_sample_fmt ||
dec->channel_layout != is->resample_channel_layout;
if ((!is->avr && audio_resample) || resample_changed) {
int ret;
if (is->avr)
avresample_close(is->avr);
else if (audio_resample) {
is->avr = avresample_alloc_context();
if (!is->avr) {
fprintf(stderr, "error allocating AVAudioResampleContext\n");
break;
}
}
if (audio_resample) {
av_opt_set_int(is->avr, "in_channel_layout", dec->channel_layout, 0);
av_opt_set_int(is->avr, "in_sample_fmt", dec->sample_fmt, 0);
av_opt_set_int(is->avr, "in_sample_rate", dec->sample_rate, 0);
av_opt_set_int(is->avr, "out_channel_layout", is->sdl_channel_layout, 0);
av_opt_set_int(is->avr, "out_sample_fmt", is->sdl_sample_fmt, 0);
av_opt_set_int(is->avr, "out_sample_rate", dec->sample_rate, 0);
if ((ret = avresample_open(is->avr)) < 0) {
fprintf(stderr, "error initializing libavresample\n");
break;
}
}
is->resample_sample_fmt = dec->sample_fmt;
is->resample_channel_layout = dec->channel_layout;
}
if (audio_resample) {
void *tmp_out;
int out_samples, out_size, out_linesize;
int osize = av_get_bytes_per_sample(is->sdl_sample_fmt);
int nb_samples = is->frame->nb_samples;
out_size = av_samples_get_buffer_size(&out_linesize,
is->sdl_channels,
nb_samples,
is->sdl_sample_fmt, 0);
tmp_out = av_realloc(is->audio_buf1, out_size);
if (!tmp_out)
return AVERROR(ENOMEM);
is->audio_buf1 = tmp_out;
out_samples = avresample_convert(is->avr,
(void **)&is->audio_buf1,
out_linesize, nb_samples,
(void **)is->frame->data,
is->frame->linesize[0],
is->frame->nb_samples);
if (out_samples < 0) {
fprintf(stderr, "avresample_convert() failed\n");
break;
}
is->audio_buf = is->audio_buf1;
data_size = out_samples * osize * is->sdl_channels;
} else {
is->audio_buf = is->frame->data[0];
}
/* if no pts, then compute it */
pts = is->audio_clock;
*pts_ptr = pts;
n = is->sdl_channels * av_get_bytes_per_sample(is->sdl_sample_fmt);
is->audio_clock += (double)data_size /
(double)(n * dec->sample_rate);
#ifdef DEBUG
{
static double last_clock;
printf("audio: delay=%0.3f clock=%0.3f pts=%0.3f\n",
is->audio_clock - last_clock,
is->audio_clock, pts);
last_clock = is->audio_clock;
}
#endif
return data_size;
}
/* free the current packet */
if (pkt->data)
av_free_packet(pkt);
memset(pkt_temp, 0, sizeof(*pkt_temp));
if (is->paused || is->audioq.abort_request) {
return -1;
}
/* read next packet */
if ((new_packet = packet_queue_get(&is->audioq, pkt, 1)) < 0)
return -1;
if (pkt->data == flush_pkt.data) {
avcodec_flush_buffers(dec);
flush_complete = 0;
}
*pkt_temp = *pkt;
/* if update the audio clock with the pts */
if (pkt->pts != AV_NOPTS_VALUE) {
is->audio_clock = av_q2d(is->audio_st->time_base)*pkt->pts;
}
}
}
/* prepare a new audio buffer */
static void sdl_audio_callback(void *opaque, Uint8 *stream, int len)
{
VideoState *is = opaque;
int audio_size, len1;
double pts;
audio_callback_time = av_gettime();
while (len > 0) {
if (is->audio_buf_index >= is->audio_buf_size) {
audio_size = audio_decode_frame(is, &pts);
if (audio_size < 0) {
/* if error, just output silence */
is->audio_buf = is->silence_buf;
is->audio_buf_size = sizeof(is->silence_buf);
} else {
if (is->show_audio)
update_sample_display(is, (int16_t *)is->audio_buf, audio_size);
audio_size = synchronize_audio(is, (int16_t *)is->audio_buf, audio_size,
pts);
is->audio_buf_size = audio_size;
}
is->audio_buf_index = 0;
}
len1 = is->audio_buf_size - is->audio_buf_index;
if (len1 > len)
len1 = len;
memcpy(stream, (uint8_t *)is->audio_buf + is->audio_buf_index, len1);
len -= len1;
stream += len1;
is->audio_buf_index += len1;
}
}
/* open a given stream. Return 0 if OK */
static int stream_component_open(VideoState *is, int stream_index)
{
AVFormatContext *ic = is->ic;
AVCodecContext *avctx;
AVCodec *codec;
SDL_AudioSpec wanted_spec, spec;
AVDictionary *opts;
AVDictionaryEntry *t = NULL;
if (stream_index < 0 || stream_index >= ic->nb_streams)
return -1;
avctx = ic->streams[stream_index]->codec;
opts = filter_codec_opts(codec_opts, avctx->codec_id, ic, ic->streams[stream_index], NULL);
codec = avcodec_find_decoder(avctx->codec_id);
avctx->debug_mv = debug_mv;
avctx->debug = debug;
avctx->workaround_bugs = workaround_bugs;
avctx->idct_algo = idct;
avctx->skip_frame = skip_frame;
avctx->skip_idct = skip_idct;
avctx->skip_loop_filter = skip_loop_filter;
avctx->error_concealment = error_concealment;
if (fast) avctx->flags2 |= CODEC_FLAG2_FAST;
if (!av_dict_get(opts, "threads", NULL, 0))
av_dict_set(&opts, "threads", "auto", 0);
if (!codec ||
avcodec_open2(avctx, codec, &opts) < 0)
return -1;
if ((t = av_dict_get(opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
return AVERROR_OPTION_NOT_FOUND;
}
/* prepare audio output */
if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
wanted_spec.freq = avctx->sample_rate;
wanted_spec.format = AUDIO_S16SYS;
if (!avctx->channel_layout)
avctx->channel_layout = av_get_default_channel_layout(avctx->channels);
if (!avctx->channel_layout) {
fprintf(stderr, "unable to guess channel layout\n");
return -1;
}
if (avctx->channels == 1)
is->sdl_channel_layout = AV_CH_LAYOUT_MONO;
else
is->sdl_channel_layout = AV_CH_LAYOUT_STEREO;
is->sdl_channels = av_get_channel_layout_nb_channels(is->sdl_channel_layout);
wanted_spec.channels = is->sdl_channels;
wanted_spec.silence = 0;
wanted_spec.samples = SDL_AUDIO_BUFFER_SIZE;
wanted_spec.callback = sdl_audio_callback;
wanted_spec.userdata = is;
if (SDL_OpenAudio(&wanted_spec, &spec) < 0) {
fprintf(stderr, "SDL_OpenAudio: %s\n", SDL_GetError());
return -1;
}
is->audio_hw_buf_size = spec.size;
is->sdl_sample_fmt = AV_SAMPLE_FMT_S16;
is->resample_sample_fmt = is->sdl_sample_fmt;
is->resample_channel_layout = is->sdl_channel_layout;
}
ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
switch (avctx->codec_type) {
case AVMEDIA_TYPE_AUDIO:
is->audio_stream = stream_index;
is->audio_st = ic->streams[stream_index];
is->audio_buf_size = 0;
is->audio_buf_index = 0;
/* init averaging filter */
is->audio_diff_avg_coef = exp(log(0.01) / AUDIO_DIFF_AVG_NB);
is->audio_diff_avg_count = 0;
/* since we do not have a precise anough audio fifo fullness,
we correct audio sync only if larger than this threshold */
is->audio_diff_threshold = 2.0 * SDL_AUDIO_BUFFER_SIZE / avctx->sample_rate;
memset(&is->audio_pkt, 0, sizeof(is->audio_pkt));
packet_queue_init(&is->audioq);
SDL_PauseAudio(0);
break;
case AVMEDIA_TYPE_VIDEO:
is->video_stream = stream_index;
is->video_st = ic->streams[stream_index];
packet_queue_init(&is->videoq);
is->video_tid = SDL_CreateThread(video_thread, is);
break;
case AVMEDIA_TYPE_SUBTITLE:
is->subtitle_stream = stream_index;
is->subtitle_st = ic->streams[stream_index];
packet_queue_init(&is->subtitleq);
is->subtitle_tid = SDL_CreateThread(subtitle_thread, is);
break;
default:
break;
}
return 0;
}
static void stream_component_close(VideoState *is, int stream_index)
{
AVFormatContext *ic = is->ic;
AVCodecContext *avctx;
if (stream_index < 0 || stream_index >= ic->nb_streams)
return;
avctx = ic->streams[stream_index]->codec;
switch (avctx->codec_type) {
case AVMEDIA_TYPE_AUDIO:
packet_queue_abort(&is->audioq);
SDL_CloseAudio();
packet_queue_end(&is->audioq);
av_free_packet(&is->audio_pkt);
if (is->avr)
avresample_free(&is->avr);
av_freep(&is->audio_buf1);
is->audio_buf = NULL;
av_freep(&is->frame);
if (is->rdft) {
av_rdft_end(is->rdft);
av_freep(&is->rdft_data);
is->rdft = NULL;
is->rdft_bits = 0;
}
break;
case AVMEDIA_TYPE_VIDEO:
packet_queue_abort(&is->videoq);
/* note: we also signal this mutex to make sure we deblock the
video thread in all cases */
SDL_LockMutex(is->pictq_mutex);
SDL_CondSignal(is->pictq_cond);
SDL_UnlockMutex(is->pictq_mutex);
SDL_WaitThread(is->video_tid, NULL);
packet_queue_end(&is->videoq);
break;
case AVMEDIA_TYPE_SUBTITLE:
packet_queue_abort(&is->subtitleq);
/* note: we also signal this mutex to make sure we deblock the
video thread in all cases */
SDL_LockMutex(is->subpq_mutex);
is->subtitle_stream_changed = 1;
SDL_CondSignal(is->subpq_cond);
SDL_UnlockMutex(is->subpq_mutex);
SDL_WaitThread(is->subtitle_tid, NULL);
packet_queue_end(&is->subtitleq);
break;
default:
break;
}
ic->streams[stream_index]->discard = AVDISCARD_ALL;
avcodec_close(avctx);
free_buffer_pool(&is->buffer_pool);
switch (avctx->codec_type) {
case AVMEDIA_TYPE_AUDIO:
is->audio_st = NULL;
is->audio_stream = -1;
break;
case AVMEDIA_TYPE_VIDEO:
is->video_st = NULL;
is->video_stream = -1;
break;
case AVMEDIA_TYPE_SUBTITLE:
is->subtitle_st = NULL;
is->subtitle_stream = -1;
break;
default:
break;
}
}
/* since we have only one decoding thread, we can use a global
variable instead of a thread local variable */
static VideoState *global_video_state;
static int decode_interrupt_cb(void *ctx)
{
return global_video_state && global_video_state->abort_request;
}
/* this thread gets the stream from the disk or the network */
static int decode_thread(void *arg)
{
VideoState *is = arg;
AVFormatContext *ic = NULL;
int err, i, ret;
int st_index[AVMEDIA_TYPE_NB];
AVPacket pkt1, *pkt = &pkt1;
int eof = 0;
int pkt_in_play_range = 0;
AVDictionaryEntry *t;
AVDictionary **opts;
int orig_nb_streams;
memset(st_index, -1, sizeof(st_index));
is->video_stream = -1;
is->audio_stream = -1;
is->subtitle_stream = -1;
global_video_state = is;
ic = avformat_alloc_context();
ic->interrupt_callback.callback = decode_interrupt_cb;
err = avformat_open_input(&ic, is->filename, is->iformat, &format_opts);
if (err < 0) {
print_error(is->filename, err);
ret = -1;
goto fail;
}
if ((t = av_dict_get(format_opts, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
av_log(NULL, AV_LOG_ERROR, "Option %s not found.\n", t->key);
ret = AVERROR_OPTION_NOT_FOUND;
goto fail;
}
is->ic = ic;
if (genpts)
ic->flags |= AVFMT_FLAG_GENPTS;
opts = setup_find_stream_info_opts(ic, codec_opts);
orig_nb_streams = ic->nb_streams;
err = avformat_find_stream_info(ic, opts);
if (err < 0) {
fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
ret = -1;
goto fail;
}
for (i = 0; i < orig_nb_streams; i++)
av_dict_free(&opts[i]);
av_freep(&opts);
if (ic->pb)
ic->pb->eof_reached = 0; // FIXME hack, avplay maybe should not use url_feof() to test for the end
if (seek_by_bytes < 0)
seek_by_bytes = !!(ic->iformat->flags & AVFMT_TS_DISCONT);
/* if seeking requested, we execute it */
if (start_time != AV_NOPTS_VALUE) {
int64_t timestamp;
timestamp = start_time;
/* add the stream start time */
if (ic->start_time != AV_NOPTS_VALUE)
timestamp += ic->start_time;
ret = avformat_seek_file(ic, -1, INT64_MIN, timestamp, INT64_MAX, 0);
if (ret < 0) {
fprintf(stderr, "%s: could not seek to position %0.3f\n",
is->filename, (double)timestamp / AV_TIME_BASE);
}
}
for (i = 0; i < ic->nb_streams; i++)
ic->streams[i]->discard = AVDISCARD_ALL;
if (!video_disable)
st_index[AVMEDIA_TYPE_VIDEO] =
av_find_best_stream(ic, AVMEDIA_TYPE_VIDEO,
wanted_stream[AVMEDIA_TYPE_VIDEO], -1, NULL, 0);
if (!audio_disable)
st_index[AVMEDIA_TYPE_AUDIO] =
av_find_best_stream(ic, AVMEDIA_TYPE_AUDIO,
wanted_stream[AVMEDIA_TYPE_AUDIO],
st_index[AVMEDIA_TYPE_VIDEO],
NULL, 0);
if (!video_disable)
st_index[AVMEDIA_TYPE_SUBTITLE] =
av_find_best_stream(ic, AVMEDIA_TYPE_SUBTITLE,
wanted_stream[AVMEDIA_TYPE_SUBTITLE],
(st_index[AVMEDIA_TYPE_AUDIO] >= 0 ?
st_index[AVMEDIA_TYPE_AUDIO] :
st_index[AVMEDIA_TYPE_VIDEO]),
NULL, 0);
if (show_status) {
av_dump_format(ic, 0, is->filename, 0);
}
/* open the streams */
if (st_index[AVMEDIA_TYPE_AUDIO] >= 0) {
stream_component_open(is, st_index[AVMEDIA_TYPE_AUDIO]);
}
ret = -1;
if (st_index[AVMEDIA_TYPE_VIDEO] >= 0) {
ret = stream_component_open(is, st_index[AVMEDIA_TYPE_VIDEO]);
}
is->refresh_tid = SDL_CreateThread(refresh_thread, is);
if (ret < 0) {
if (!display_disable)
is->show_audio = 2;
}
if (st_index[AVMEDIA_TYPE_SUBTITLE] >= 0) {
stream_component_open(is, st_index[AVMEDIA_TYPE_SUBTITLE]);
}
if (is->video_stream < 0 && is->audio_stream < 0) {
fprintf(stderr, "%s: could not open codecs\n", is->filename);
ret = -1;
goto fail;
}
for (;;) {
if (is->abort_request)
break;
if (is->paused != is->last_paused) {
is->last_paused = is->paused;
if (is->paused)
is->read_pause_return = av_read_pause(ic);
else
av_read_play(ic);
}
#if CONFIG_RTSP_DEMUXER
if (is->paused && !strcmp(ic->iformat->name, "rtsp")) {
/* wait 10 ms to avoid trying to get another packet */
/* XXX: horrible */
SDL_Delay(10);
continue;
}
#endif
if (is->seek_req) {
int64_t seek_target = is->seek_pos;
int64_t seek_min = is->seek_rel > 0 ? seek_target - is->seek_rel + 2: INT64_MIN;
int64_t seek_max = is->seek_rel < 0 ? seek_target - is->seek_rel - 2: INT64_MAX;
// FIXME the +-2 is due to rounding being not done in the correct direction in generation
// of the seek_pos/seek_rel variables
ret = avformat_seek_file(is->ic, -1, seek_min, seek_target, seek_max, is->seek_flags);
if (ret < 0) {
fprintf(stderr, "%s: error while seeking\n", is->ic->filename);
} else {
if (is->audio_stream >= 0) {
packet_queue_flush(&is->audioq);
packet_queue_put(&is->audioq, &flush_pkt);
}
if (is->subtitle_stream >= 0) {
packet_queue_flush(&is->subtitleq);
packet_queue_put(&is->subtitleq, &flush_pkt);
}
if (is->video_stream >= 0) {
packet_queue_flush(&is->videoq);
packet_queue_put(&is->videoq, &flush_pkt);
}
}
is->seek_req = 0;
eof = 0;
}
/* if the queue are full, no need to read more */
if (!infinite_buffer &&
(is->audioq.size + is->videoq.size + is->subtitleq.size > MAX_QUEUE_SIZE
|| ( (is->audioq .size > MIN_AUDIOQ_SIZE || is->audio_stream < 0)
&& (is->videoq .nb_packets > MIN_FRAMES || is->video_stream < 0)
&& (is->subtitleq.nb_packets > MIN_FRAMES || is->subtitle_stream < 0)))) {
/* wait 10 ms */
SDL_Delay(10);
continue;
}
if (eof) {
if (is->video_stream >= 0) {
av_init_packet(pkt);
pkt->data = NULL;
pkt->size = 0;
pkt->stream_index = is->video_stream;
packet_queue_put(&is->videoq, pkt);
}
if (is->audio_stream >= 0 &&
is->audio_st->codec->codec->capabilities & CODEC_CAP_DELAY) {
av_init_packet(pkt);
pkt->data = NULL;
pkt->size = 0;
pkt->stream_index = is->audio_stream;
packet_queue_put(&is->audioq, pkt);
}
SDL_Delay(10);
if (is->audioq.size + is->videoq.size + is->subtitleq.size == 0) {
if (loop != 1 && (!loop || --loop)) {
stream_seek(cur_stream, start_time != AV_NOPTS_VALUE ? start_time : 0, 0, 0);
} else if (autoexit) {
ret = AVERROR_EOF;
goto fail;
}
}
continue;
}
ret = av_read_frame(ic, pkt);
if (ret < 0) {
if (ret == AVERROR_EOF || (ic->pb && ic->pb->eof_reached))
eof = 1;
if (ic->pb && ic->pb->error)
break;
SDL_Delay(100); /* wait for user event */
continue;
}
/* check if packet is in play range specified by user, then queue, otherwise discard */
pkt_in_play_range = duration == AV_NOPTS_VALUE ||
(pkt->pts - ic->streams[pkt->stream_index]->start_time) *
av_q2d(ic->streams[pkt->stream_index]->time_base) -
(double)(start_time != AV_NOPTS_VALUE ? start_time : 0) / 1000000
<= ((double)duration / 1000000);
if (pkt->stream_index == is->audio_stream && pkt_in_play_range) {
packet_queue_put(&is->audioq, pkt);
} else if (pkt->stream_index == is->video_stream && pkt_in_play_range) {
packet_queue_put(&is->videoq, pkt);
} else if (pkt->stream_index == is->subtitle_stream && pkt_in_play_range) {
packet_queue_put(&is->subtitleq, pkt);
} else {
av_free_packet(pkt);
}
}
/* wait until the end */
while (!is->abort_request) {
SDL_Delay(100);
}
ret = 0;
fail:
/* disable interrupting */
global_video_state = NULL;
/* close each stream */
if (is->audio_stream >= 0)
stream_component_close(is, is->audio_stream);
if (is->video_stream >= 0)
stream_component_close(is, is->video_stream);
if (is->subtitle_stream >= 0)
stream_component_close(is, is->subtitle_stream);
if (is->ic) {
avformat_close_input(&is->ic);
}
if (ret != 0) {
SDL_Event event;
event.type = FF_QUIT_EVENT;
event.user.data1 = is;
SDL_PushEvent(&event);
}
return 0;
}
static VideoState *stream_open(const char *filename, AVInputFormat *iformat)
{
VideoState *is;
is = av_mallocz(sizeof(VideoState));
if (!is)
return NULL;
av_strlcpy(is->filename, filename, sizeof(is->filename));
is->iformat = iformat;
is->ytop = 0;
is->xleft = 0;
/* start video display */
is->pictq_mutex = SDL_CreateMutex();
is->pictq_cond = SDL_CreateCond();
is->subpq_mutex = SDL_CreateMutex();
is->subpq_cond = SDL_CreateCond();
is->av_sync_type = av_sync_type;
is->parse_tid = SDL_CreateThread(decode_thread, is);
if (!is->parse_tid) {
av_free(is);
return NULL;
}
return is;
}
static void stream_cycle_channel(VideoState *is, int codec_type)
{
AVFormatContext *ic = is->ic;
int start_index, stream_index;
AVStream *st;
if (codec_type == AVMEDIA_TYPE_VIDEO)
start_index = is->video_stream;
else if (codec_type == AVMEDIA_TYPE_AUDIO)
start_index = is->audio_stream;
else
start_index = is->subtitle_stream;
if (start_index < (codec_type == AVMEDIA_TYPE_SUBTITLE ? -1 : 0))
return;
stream_index = start_index;
for (;;) {
if (++stream_index >= is->ic->nb_streams)
{
if (codec_type == AVMEDIA_TYPE_SUBTITLE)
{
stream_index = -1;
goto the_end;
} else
stream_index = 0;
}
if (stream_index == start_index)
return;
st = ic->streams[stream_index];
if (st->codec->codec_type == codec_type) {
/* check that parameters are OK */
switch (codec_type) {
case AVMEDIA_TYPE_AUDIO:
if (st->codec->sample_rate != 0 &&
st->codec->channels != 0)
goto the_end;
break;
case AVMEDIA_TYPE_VIDEO:
case AVMEDIA_TYPE_SUBTITLE:
goto the_end;
default:
break;
}
}
}
the_end:
stream_component_close(is, start_index);
stream_component_open(is, stream_index);
}
static void toggle_full_screen(void)
{
#if defined(__APPLE__) && SDL_VERSION_ATLEAST(1, 2, 14)
/* OS X needs to empty the picture_queue */
int i;
for (i = 0; i < VIDEO_PICTURE_QUEUE_SIZE; i++)
cur_stream->pictq[i].reallocate = 1;
#endif
is_full_screen = !is_full_screen;
video_open(cur_stream);
}
static void toggle_pause(void)
{
if (cur_stream)
stream_pause(cur_stream);
step = 0;
}
static void step_to_next_frame(void)
{
if (cur_stream) {
/* if the stream is paused unpause it, then step */
if (cur_stream->paused)
stream_pause(cur_stream);
}
step = 1;
}
static void toggle_audio_display(void)
{
if (cur_stream) {
int bgcolor = SDL_MapRGB(screen->format, 0x00, 0x00, 0x00);
cur_stream->show_audio = (cur_stream->show_audio + 1) % 3;
fill_rectangle(screen,
cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height,
bgcolor);
SDL_UpdateRect(screen, cur_stream->xleft, cur_stream->ytop, cur_stream->width, cur_stream->height);
}
}
/* handle an event sent by the GUI */
static void event_loop(void)
{
SDL_Event event;
double incr, pos, frac;
for (;;) {
double x;
SDL_WaitEvent(&event);
switch (event.type) {
case SDL_KEYDOWN:
if (exit_on_keydown) {
do_exit();
break;
}
switch (event.key.keysym.sym) {
case SDLK_ESCAPE:
case SDLK_q:
do_exit();
break;
case SDLK_f:
toggle_full_screen();
break;
case SDLK_p:
case SDLK_SPACE:
toggle_pause();
break;
case SDLK_s: // S: Step to next frame
step_to_next_frame();
break;
case SDLK_a:
if (cur_stream)
stream_cycle_channel(cur_stream, AVMEDIA_TYPE_AUDIO);
break;
case SDLK_v:
if (cur_stream)
stream_cycle_channel(cur_stream, AVMEDIA_TYPE_VIDEO);
break;
case SDLK_t:
if (cur_stream)
stream_cycle_channel(cur_stream, AVMEDIA_TYPE_SUBTITLE);
break;
case SDLK_w:
toggle_audio_display();
break;
case SDLK_LEFT:
incr = -10.0;
goto do_seek;
case SDLK_RIGHT:
incr = 10.0;
goto do_seek;
case SDLK_UP:
incr = 60.0;
goto do_seek;
case SDLK_DOWN:
incr = -60.0;
do_seek:
if (cur_stream) {
if (seek_by_bytes) {
if (cur_stream->video_stream >= 0 && cur_stream->video_current_pos >= 0) {
pos = cur_stream->video_current_pos;
} else if (cur_stream->audio_stream >= 0 && cur_stream->audio_pkt.pos >= 0) {
pos = cur_stream->audio_pkt.pos;
} else
pos = avio_tell(cur_stream->ic->pb);
if (cur_stream->ic->bit_rate)
incr *= cur_stream->ic->bit_rate / 8.0;
else
incr *= 180000.0;
pos += incr;
stream_seek(cur_stream, pos, incr, 1);
} else {
pos = get_master_clock(cur_stream);
pos += incr;
stream_seek(cur_stream, (int64_t)(pos * AV_TIME_BASE), (int64_t)(incr * AV_TIME_BASE), 0);
}
}
break;
default:
break;
}
break;
case SDL_MOUSEBUTTONDOWN:
if (exit_on_mousedown) {
do_exit();
break;
}
case SDL_MOUSEMOTION:
if (event.type == SDL_MOUSEBUTTONDOWN) {
x = event.button.x;
} else {
if (event.motion.state != SDL_PRESSED)
break;
x = event.motion.x;
}
if (cur_stream) {
if (seek_by_bytes || cur_stream->ic->duration <= 0) {
uint64_t size = avio_size(cur_stream->ic->pb);
stream_seek(cur_stream, size*x/cur_stream->width, 0, 1);
} else {
int64_t ts;
int ns, hh, mm, ss;
int tns, thh, tmm, tss;
tns = cur_stream->ic->duration / 1000000LL;
thh = tns / 3600;
tmm = (tns % 3600) / 60;
tss = (tns % 60);
frac = x / cur_stream->width;
ns = frac * tns;
hh = ns / 3600;
mm = (ns % 3600) / 60;
ss = (ns % 60);
fprintf(stderr, "Seek to %2.0f%% (%2d:%02d:%02d) of total duration (%2d:%02d:%02d) \n", frac*100,
hh, mm, ss, thh, tmm, tss);
ts = frac * cur_stream->ic->duration;
if (cur_stream->ic->start_time != AV_NOPTS_VALUE)
ts += cur_stream->ic->start_time;
stream_seek(cur_stream, ts, 0, 0);
}
}
break;
case SDL_VIDEORESIZE:
if (cur_stream) {
screen = SDL_SetVideoMode(event.resize.w, event.resize.h, 0,
SDL_HWSURFACE|SDL_RESIZABLE|SDL_ASYNCBLIT|SDL_HWACCEL);
screen_width = cur_stream->width = event.resize.w;
screen_height = cur_stream->height = event.resize.h;
}
break;
case SDL_QUIT:
case FF_QUIT_EVENT:
do_exit();
break;
case FF_ALLOC_EVENT:
video_open(event.user.data1);
alloc_picture(event.user.data1);
break;
case FF_REFRESH_EVENT:
video_refresh_timer(event.user.data1);
cur_stream->refresh = 0;
break;
default:
break;
}
}
}
static int opt_frame_size(const char *opt, const char *arg)
{
av_log(NULL, AV_LOG_ERROR,
"Option '%s' has been removed, use private format options instead\n", opt);
return AVERROR(EINVAL);
}
static int opt_width(const char *opt, const char *arg)
{
screen_width = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
return 0;
}
static int opt_height(const char *opt, const char *arg)
{
screen_height = parse_number_or_die(opt, arg, OPT_INT64, 1, INT_MAX);
return 0;
}
static int opt_format(const char *opt, const char *arg)
{
file_iformat = av_find_input_format(arg);
if (!file_iformat) {
fprintf(stderr, "Unknown input format: %s\n", arg);
return AVERROR(EINVAL);
}
return 0;
}
static int opt_frame_pix_fmt(const char *opt, const char *arg)
{
av_log(NULL, AV_LOG_ERROR,
"Option '%s' has been removed, use private format options instead\n", opt);
return AVERROR(EINVAL);
}
static int opt_sync(const char *opt, const char *arg)
{
if (!strcmp(arg, "audio"))
av_sync_type = AV_SYNC_AUDIO_MASTER;
else if (!strcmp(arg, "video"))
av_sync_type = AV_SYNC_VIDEO_MASTER;
else if (!strcmp(arg, "ext"))
av_sync_type = AV_SYNC_EXTERNAL_CLOCK;
else {
fprintf(stderr, "Unknown value for %s: %s\n", opt, arg);
exit(1);
}
return 0;
}
static int opt_seek(const char *opt, const char *arg)
{
start_time = parse_time_or_die(opt, arg, 1);
return 0;
}
static int opt_duration(const char *opt, const char *arg)
{
duration = parse_time_or_die(opt, arg, 1);
return 0;
}
static int opt_debug(const char *opt, const char *arg)
{
av_log_set_level(99);
debug = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
return 0;
}
static int opt_vismv(const char *opt, const char *arg)
{
debug_mv = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
return 0;
}
static const OptionDef options[] = {
#include "cmdutils_common_opts.h"
{ "x", HAS_ARG, { (void*)opt_width }, "force displayed width", "width" },
{ "y", HAS_ARG, { (void*)opt_height }, "force displayed height", "height" },
{ "s", HAS_ARG | OPT_VIDEO, { (void*)opt_frame_size }, "set frame size (WxH or abbreviation)", "size" },
{ "fs", OPT_BOOL, { (void*)&is_full_screen }, "force full screen" },
{ "an", OPT_BOOL, { (void*)&audio_disable }, "disable audio" },
{ "vn", OPT_BOOL, { (void*)&video_disable }, "disable video" },
{ "ast", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_AUDIO] }, "select desired audio stream", "stream_number" },
{ "vst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_VIDEO] }, "select desired video stream", "stream_number" },
{ "sst", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&wanted_stream[AVMEDIA_TYPE_SUBTITLE] }, "select desired subtitle stream", "stream_number" },
{ "ss", HAS_ARG, { (void*)&opt_seek }, "seek to a given position in seconds", "pos" },
{ "t", HAS_ARG, { (void*)&opt_duration }, "play \"duration\" seconds of audio/video", "duration" },
{ "bytes", OPT_INT | HAS_ARG, { (void*)&seek_by_bytes }, "seek by bytes 0=off 1=on -1=auto", "val" },
{ "nodisp", OPT_BOOL, { (void*)&display_disable }, "disable graphical display" },
{ "f", HAS_ARG, { (void*)opt_format }, "force format", "fmt" },
{ "pix_fmt", HAS_ARG | OPT_EXPERT | OPT_VIDEO, { (void*)opt_frame_pix_fmt }, "set pixel format", "format" },
{ "stats", OPT_BOOL | OPT_EXPERT, { (void*)&show_status }, "show status", "" },
{ "debug", HAS_ARG | OPT_EXPERT, { (void*)opt_debug }, "print specific debug info", "" },
{ "bug", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&workaround_bugs }, "workaround bugs", "" },
{ "vismv", HAS_ARG | OPT_EXPERT, { (void*)opt_vismv }, "visualize motion vectors", "" },
{ "fast", OPT_BOOL | OPT_EXPERT, { (void*)&fast }, "non spec compliant optimizations", "" },
{ "genpts", OPT_BOOL | OPT_EXPERT, { (void*)&genpts }, "generate pts", "" },
{ "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
{ "skiploop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_loop_filter }, "", "" },
{ "skipframe", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_frame }, "", "" },
{ "skipidct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&skip_idct }, "", "" },
{ "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&idct }, "set idct algo", "algo" },
{ "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&error_concealment }, "set error concealment options", "bit_mask" },
{ "sync", HAS_ARG | OPT_EXPERT, { (void*)opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
{ "autoexit", OPT_BOOL | OPT_EXPERT, { (void*)&autoexit }, "exit at the end", "" },
{ "exitonkeydown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_keydown }, "exit on key down", "" },
{ "exitonmousedown", OPT_BOOL | OPT_EXPERT, { (void*)&exit_on_mousedown }, "exit on mouse down", "" },
{ "loop", OPT_INT | HAS_ARG | OPT_EXPERT, { (void*)&loop }, "set number of times the playback shall be looped", "loop count" },
{ "framedrop", OPT_BOOL | OPT_EXPERT, { (void*)&framedrop }, "drop frames when cpu is too slow", "" },
{ "infbuf", OPT_BOOL | OPT_EXPERT, { (void*)&infinite_buffer }, "don't limit the input buffer size (useful with realtime streams)", "" },
{ "window_title", OPT_STRING | HAS_ARG, { (void*)&window_title }, "set window title", "window title" },
#if CONFIG_AVFILTER
{ "vf", OPT_STRING | HAS_ARG, { (void*)&vfilters }, "video filters", "filter list" },
#endif
{ "rdftspeed", OPT_INT | HAS_ARG| OPT_AUDIO | OPT_EXPERT, { (void*)&rdftspeed }, "rdft speed", "msecs" },
{ "default", HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, { (void*)opt_default }, "generic catch all option", "" },
{ "i", 0, { NULL }, "avconv compatibility dummy option", ""},
{ NULL, },
};
static void show_usage(void)
{
printf("Simple media player\n");
printf("usage: %s [options] input_file\n", program_name);
printf("\n");
}
static void show_help(void)
{
av_log_set_callback(log_callback_help);
show_usage();
show_help_options(options, "Main options:\n",
OPT_EXPERT, 0);
show_help_options(options, "\nAdvanced options:\n",
OPT_EXPERT, OPT_EXPERT);
printf("\n");
show_help_children(avcodec_get_class(), AV_OPT_FLAG_DECODING_PARAM);
show_help_children(avformat_get_class(), AV_OPT_FLAG_DECODING_PARAM);
#if !CONFIG_AVFILTER
show_help_children(sws_get_class(), AV_OPT_FLAG_ENCODING_PARAM);
#endif
printf("\nWhile playing:\n"
"q, ESC quit\n"
"f toggle full screen\n"
"p, SPC pause\n"
"a cycle audio channel\n"
"v cycle video channel\n"
"t cycle subtitle channel\n"
"w show audio waves\n"
"s activate frame-step mode\n"
"left/right seek backward/forward 10 seconds\n"
"down/up seek backward/forward 1 minute\n"
"mouse click seek to percentage in file corresponding to fraction of width\n"
);
}
static void opt_input_file(void *optctx, const char *filename)
{
if (input_filename) {
fprintf(stderr, "Argument '%s' provided as input filename, but '%s' was already specified.\n",
filename, input_filename);
exit(1);
}
if (!strcmp(filename, "-"))
filename = "pipe:";
input_filename = filename;
}
/* Called from the main */
int main(int argc, char **argv)
{
int flags;
av_log_set_flags(AV_LOG_SKIP_REPEATED);
parse_loglevel(argc, argv, options);
/* register all codecs, demux and protocols */
avcodec_register_all();
#if CONFIG_AVDEVICE
avdevice_register_all();
#endif
#if CONFIG_AVFILTER
avfilter_register_all();
#endif
av_register_all();
avformat_network_init();
init_opts();
show_banner();
parse_options(NULL, argc, argv, options, opt_input_file);
if (!input_filename) {
show_usage();
fprintf(stderr, "An input file must be specified\n");
fprintf(stderr, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
exit(1);
}
if (display_disable) {
video_disable = 1;
}
flags = SDL_INIT_VIDEO | SDL_INIT_AUDIO | SDL_INIT_TIMER;
#if !defined(__MINGW32__) && !defined(__APPLE__)
flags |= SDL_INIT_EVENTTHREAD; /* Not supported on Windows or Mac OS X */
#endif
if (SDL_Init (flags)) {
fprintf(stderr, "Could not initialize SDL - %s\n", SDL_GetError());
exit(1);
}
if (!display_disable) {
#if HAVE_SDL_VIDEO_SIZE
const SDL_VideoInfo *vi = SDL_GetVideoInfo();
fs_screen_width = vi->current_w;
fs_screen_height = vi->current_h;
#endif
}
SDL_EventState(SDL_ACTIVEEVENT, SDL_IGNORE);
SDL_EventState(SDL_SYSWMEVENT, SDL_IGNORE);
SDL_EventState(SDL_USEREVENT, SDL_IGNORE);
av_init_packet(&flush_pkt);
flush_pkt.data = "FLUSH";
cur_stream = stream_open(input_filename, file_iformat);
event_loop();
/* never returns */
return 0;
}
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