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ffmpeg/ffplay.c

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/*
* FFplay : Simple Media Player based on the FFmpeg libraries
* Copyright (c) 2003 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <math.h>
#include <limits.h>
#include "libavutil/avstring.h"
#include "libavutil/pixdesc.h"
#include "libavformat/avformat.h"
#include "libavdevice/avdevice.h"
#include "libswscale/swscale.h"
#include "libavcodec/audioconvert.h"
#include "libavcodec/colorspace.h"
#include "libavcodec/opt.h"
#include "libavcodec/dsputil.h"
#include "cmdutils.h"
#include <SDL.h>
#include <SDL_thread.h>
#ifdef __MINGW32__
#undef main /* We don't want SDL to override our main() */
#endif
#undef exit
#undef printf
#undef fprintf
const char program_name[] = "FFplay";
const int program_birth_year = 2003;
//#define DEBUG_SYNC
#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
/* 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 1
#define SUBPICTURE_QUEUE_SIZE 4
typedef struct VideoPicture {
double pts; ///<presentation time stamp for this picture
int64_t pos; ///<byte position in file
SDL_Overlay *bmp;
int width, height; /* source height & width */
int allocated;
SDL_TimerID timer_id;
} 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;
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 dtg_active_format;
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;
/* samples output by the codec. we reserve more space for avsync
compensation */
DECLARE_ALIGNED(16,uint8_t,audio_buf1)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
DECLARE_ALIGNED(16,uint8_t,audio_buf2)[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2];
uint8_t *audio_buf;
unsigned int audio_buf_size; /* in bytes */
int audio_buf_index; /* in bytes */
AVPacket audio_pkt_temp;
AVPacket audio_pkt;
enum SampleFormat audio_src_fmt;
AVAudioConvert *reformat_ctx;
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;
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;
struct SwsContext *img_convert_ctx;
// QETimer *video_timer;
char filename[1024];
int width, height, xleft, ytop;
int64_t faulty_pts;
int64_t faulty_dts;
int64_t last_dts_for_fault_detection;
int64_t last_pts_for_fault_detection;
} VideoState;
static void show_help(void);
static int audio_write_get_buf_size(VideoState *is);
/* options specified by the user */
static AVInputFormat *file_iformat;
static const char *input_filename;
static int fs_screen_width;
static int fs_screen_height;
static int screen_width = 0;
static int screen_height = 0;
static int frame_width = 0;
static int frame_height = 0;
static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
static int audio_disable;
static int video_disable;
static int wanted_stream[CODEC_TYPE_NB]={
[CODEC_TYPE_AUDIO]=-1,
[CODEC_TYPE_VIDEO]=-1,
[CODEC_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 int debug = 0;
static int debug_mv = 0;
static int step = 0;
static int thread_count = 1;
static int workaround_bugs = 1;
static int fast = 0;
static int genpts = 0;
static int lowres = 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_recognition = FF_ER_CAREFUL;
static int error_concealment = 3;
static int decoder_reorder_pts= -1;
static int autoexit;
/* 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;
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);
}
#if 0
/* draw only the border of a rectangle */
void fill_border(VideoState *s, int x, int y, int w, int h, int color)
{
int w1, w2, h1, h2;
/* fill the background */
w1 = x;
if (w1 < 0)
w1 = 0;
w2 = s->width - (x + w);
if (w2 < 0)
w2 = 0;
h1 = y;
if (h1 < 0)
h1 = 0;
h2 = s->height - (y + h);
if (h2 < 0)
h2 = 0;
fill_rectangle(screen,
s->xleft, s->ytop,
w1, s->height,
color);
fill_rectangle(screen,
s->xleft + s->width - w2, s->ytop,
w2, s->height,
color);
fill_rectangle(screen,
s->xleft + w1, s->ytop,
s->width - w1 - w2, h1,
color);
fill_rectangle(screen,
s->xleft + w1, s->ytop + s->height - h2,
s->width - w1 - w2, h2,
color);
}
#endif
#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)
{
int i;
for (i = 0; i < sp->sub.num_rects; i++)
{
av_freep(&sp->sub.rects[i]->pict.data[0]);
av_freep(&sp->sub.rects[i]->pict.data[1]);
av_freep(&sp->sub.rects[i]);
}
av_free(sp->sub.rects);
memset(&sp->sub, 0, sizeof(AVSubtitle));
}
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) {
/* 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;
if (aspect_ratio <= 0.0)
aspect_ratio = 1.0;
aspect_ratio *= (float)is->video_st->codec->width / is->video_st->codec->height;
/* if an active format is indicated, then it overrides the
mpeg format */
#if 0
if (is->video_st->codec->dtg_active_format != is->dtg_active_format) {
is->dtg_active_format = is->video_st->codec->dtg_active_format;
printf("dtg_active_format=%d\n", is->dtg_active_format);
}
#endif
#if 0
switch(is->video_st->codec->dtg_active_format) {
case FF_DTG_AFD_SAME:
default:
/* nothing to do */
break;
case FF_DTG_AFD_4_3:
aspect_ratio = 4.0 / 3.0;
break;
case FF_DTG_AFD_16_9:
aspect_ratio = 16.0 / 9.0;
break;
case FF_DTG_AFD_14_9:
aspect_ratio = 14.0 / 9.0;
break;
case FF_DTG_AFD_4_3_SP_14_9:
aspect_ratio = 14.0 / 9.0;
break;
case FF_DTG_AFD_16_9_SP_14_9:
aspect_ratio = 14.0 / 9.0;
break;
case FF_DTG_AFD_SP_4_3:
aspect_ratio = 4.0 / 3.0;
break;
}
#endif
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;
if (!is->no_background) {
/* fill the background */
// fill_border(is, x, y, width, height, QERGB(0x00, 0x00, 0x00));
} else {
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);
} else {
#if 0
fill_rectangle(screen,
is->xleft, is->ytop, is->width, is->height,
QERGB(0x00, 0x00, 0x00));
#endif
}
}
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->audio_st->codec->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 -= data_used / 2;
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){
ff_rdft_end(&s->rdft);
ff_rdft_init(&s->rdft, rdft_bits, RDFT);
s->rdft_bits= rdft_bits;
}
{
FFTSample data[2][2*nb_freq];
for(ch = 0;ch < nb_display_channels; 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;
}
ff_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= sqrt(w*sqrt(data[1][2*y+0]*data[1][2*y+0] + data[1][2*y+1]*data[1][2*y+1]));
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;
}else if (is->video_st && is->video_st->codec->width){
w = is->video_st->codec->width;
h = is->video_st->codec->height;
} else {
w = 640;
h = 480;
}
#ifndef __APPLE__
screen = SDL_SetVideoMode(w, h, 0, flags);
#else
/* setting bits_per_pixel = 0 or 32 causes blank video on OS X */
screen = SDL_SetVideoMode(w, h, 24, flags);
#endif
if (!screen) {
fprintf(stderr, "SDL: could not set video mode - exiting\n");
return -1;
}
SDL_WM_SetCaption("FFplay", "FFplay");
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 Uint32 sdl_refresh_timer_cb(Uint32 interval, void *opaque)
{
SDL_Event event;
event.type = FF_REFRESH_EVENT;
event.user.data1 = opaque;
SDL_PushEvent(&event);
return 0; /* 0 means stop timer */
}
/* schedule a video refresh in 'delay' ms */
static SDL_TimerID schedule_refresh(VideoState *is, int delay)
{
if(!delay) delay=1; //SDL seems to be buggy when the delay is 0
return SDL_AddTimer(delay, sdl_refresh_timer_cb, is);
}
/* 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 *
2 * is->audio_st->codec->channels;
}
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_frame_delay(double frame_current_pts, VideoState *is)
{
double actual_delay, 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;
/* compute the REAL delay (we need to do that to avoid
long term errors */
actual_delay = is->frame_timer - (av_gettime() / 1000000.0);
if (actual_delay < 0.010) {
/* XXX: should skip picture */
actual_delay = 0.010;
}
#if defined(DEBUG_SYNC)
printf("video: delay=%0.3f actual_delay=%0.3f pts=%0.3f A-V=%f\n",
delay, actual_delay, frame_current_pts, -diff);
#endif
return actual_delay;
}
/* called to display each frame */
static void video_refresh_timer(void *opaque)
{
VideoState *is = opaque;
VideoPicture *vp;
SubPicture *sp, *sp2;
if (is->video_st) {
if (is->pictq_size == 0) {
fprintf(stderr, "Internal error detected in the SDL timer\n");
} else {
/* dequeue the picture */
vp = &is->pictq[is->pictq_rindex];
/* update current video pts */
is->video_current_pts = vp->pts;
is->video_current_pts_drift = is->video_current_pts - av_gettime() / 1000000.0;
is->video_current_pos = vp->pos;
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 */
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);
vp->timer_id= 0;
is->pictq_size--;
SDL_CondSignal(is->pictq_cond);
SDL_UnlockMutex(is->pictq_mutex);
}
} else if (is->audio_st) {
/* draw the next audio frame */
schedule_refresh(is, 40);
/* if only audio stream, then display the audio bars (better
than nothing, just to test the implementation */
/* display picture */
video_display(is);
} else {
schedule_refresh(is, 100);
}
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 aq=%5dKB vq=%5dKB sq=%5dB f=%Ld/%Ld \r",
get_master_clock(is), av_diff, aqsize / 1024, vqsize / 1024, sqsize, is->faulty_dts, is->faulty_pts);
fflush(stdout);
last_time = cur_time;
}
}
}
/* 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);
vp->bmp = SDL_CreateYUVOverlay(is->video_st->codec->width,
is->video_st->codec->height,
SDL_YV12_OVERLAY,
screen);
vp->width = is->video_st->codec->width;
vp->height = is->video_st->codec->height;
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;
int dst_pix_fmt;
/* wait until we have space to put a new picture */
SDL_LockMutex(is->pictq_mutex);
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->width != is->video_st->codec->width ||
vp->height != is->video_st->codec->height) {
SDL_Event event;
vp->allocated = 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;
/* get a pointer on the bitmap */
SDL_LockYUVOverlay (vp->bmp);
dst_pix_fmt = PIX_FMT_YUV420P;
memset(&pict,0,sizeof(AVPicture));
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];
sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
is->img_convert_ctx = sws_getCachedContext(is->img_convert_ctx,
is->video_st->codec->width, is->video_st->codec->height,
is->video_st->codec->pix_fmt,
is->video_st->codec->width, is->video_st->codec->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, is->video_st->codec->height, pict.data, pict.linesize);
/* 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);
is->pictq_size++;
//We must schedule in a mutex as we must store the timer id before the timer dies or might end up freeing a alraedy freed id
vp->timer_id= schedule_refresh(is, (int)(compute_frame_delay(vp->pts, is) * 1000 + 0.5));
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;
#if defined(DEBUG_SYNC) && 0
{
int ftype;
if (src_frame->pict_type == FF_B_TYPE)
ftype = 'B';
else if (src_frame->pict_type == FF_I_TYPE)
ftype = 'I';
else
ftype = 'P';
printf("frame_type=%c clock=%0.3f pts=%0.3f\n",
ftype, pts, pts1);
}
#endif
return queue_picture(is, src_frame, pts, pos);
}
static int video_thread(void *arg)
{
VideoState *is = arg;
AVPacket pkt1, *pkt = &pkt1;
int len1, got_picture, i;
AVFrame *frame= avcodec_alloc_frame();
double pts;
for(;;) {
while (is->paused && !is->videoq.abort_request) {
SDL_Delay(10);
}
if (packet_queue_get(&is->videoq, pkt, 1) < 0)
break;
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++){
if(is->pictq[i].timer_id){
SDL_RemoveTimer(is->pictq[i].timer_id);
is->pictq[i].timer_id=0;
schedule_refresh(is, 1);
}
}
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);
is->last_dts_for_fault_detection=
is->last_pts_for_fault_detection= INT64_MIN;
is->frame_last_pts= AV_NOPTS_VALUE;
is->frame_last_delay = 0;
is->frame_timer = (double)av_gettime() / 1000000.0;
continue;
}
/* NOTE: ipts is the PTS of the _first_ picture beginning in
this packet, if any */
is->video_st->codec->reordered_opaque= pkt->pts;
len1 = avcodec_decode_video2(is->video_st->codec,
frame, &got_picture,
pkt);
if (got_picture) {
if(pkt->dts != AV_NOPTS_VALUE){
is->faulty_dts += pkt->dts <= is->last_dts_for_fault_detection;
is->last_dts_for_fault_detection= pkt->dts;
}
if(frame->reordered_opaque != AV_NOPTS_VALUE){
is->faulty_pts += frame->reordered_opaque <= is->last_pts_for_fault_detection;
is->last_pts_for_fault_detection= frame->reordered_opaque;
}
}
if( ( decoder_reorder_pts==1
|| (decoder_reorder_pts && is->faulty_pts<is->faulty_dts)
|| pkt->dts == AV_NOPTS_VALUE)
&& frame->reordered_opaque != AV_NOPTS_VALUE)
pts= frame->reordered_opaque;
else if(pkt->dts != AV_NOPTS_VALUE)
pts= pkt->dts;
else
pts= 0;
pts *= av_q2d(is->video_st->time_base);
// if (len1 < 0)
// break;
if (got_picture) {
if (output_picture2(is, frame, pts, pkt->pos) < 0)
goto the_end;
}
av_free_packet(pkt);
if (step)
if (cur_stream)
stream_pause(cur_stream);
}
the_end:
av_free(frame);
return 0;
}
static int subtitle_thread(void *arg)
{
VideoState *is = arg;
SubPicture *sp;
AVPacket pkt1, *pkt = &pkt1;
int len1, 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)
goto the_end;
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;
len1 = avcodec_decode_subtitle2(is->subtitle_st->codec,
&sp->sub, &got_subtitle,
pkt);
// if (len1 < 0)
// break;
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);
// if (step)
// if (cur_stream)
// stream_pause(cur_stream);
}
the_end:
return 0;
}
/* copy samples for viewing in editor window */
static void update_sample_display(VideoState *is, short *samples, int samples_size)
{
int size, len, channels;
channels = is->audio_st->codec->channels;
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 = 2 * is->audio_st->codec->channels;
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;
}
}
#if 0
printf("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);
#endif
}
} 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;
double pts;
for(;;) {
/* NOTE: the audio packet can contain several frames */
while (pkt_temp->size > 0) {
data_size = sizeof(is->audio_buf1);
len1 = avcodec_decode_audio3(dec,
(int16_t *)is->audio_buf1, &data_size,
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 (data_size <= 0)
continue;
if (dec->sample_fmt != is->audio_src_fmt) {
if (is->reformat_ctx)
av_audio_convert_free(is->reformat_ctx);
is->reformat_ctx= av_audio_convert_alloc(SAMPLE_FMT_S16, 1,
dec->sample_fmt, 1, NULL, 0);
if (!is->reformat_ctx) {
fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
avcodec_get_sample_fmt_name(dec->sample_fmt),
avcodec_get_sample_fmt_name(SAMPLE_FMT_S16));
break;
}
is->audio_src_fmt= dec->sample_fmt;
}
if (is->reformat_ctx) {
const void *ibuf[6]= {is->audio_buf1};
void *obuf[6]= {is->audio_buf2};
int istride[6]= {av_get_bits_per_sample_format(dec->sample_fmt)/8};
int ostride[6]= {2};
int len= data_size/istride[0];
if (av_audio_convert(is->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
printf("av_audio_convert() failed\n");
break;
}
is->audio_buf= is->audio_buf2;
/* FIXME: existing code assume that data_size equals framesize*channels*2
remove this legacy cruft */
data_size= len*2;
}else{
is->audio_buf= is->audio_buf1;
}
/* if no pts, then compute it */
pts = is->audio_clock;
*pts_ptr = pts;
n = 2 * dec->channels;
is->audio_clock += (double)data_size /
(double)(n * dec->sample_rate);
#if defined(DEBUG_SYNC)
{
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);
if (is->paused || is->audioq.abort_request) {
return -1;
}
/* read next packet */
if (packet_queue_get(&is->audioq, pkt, 1) < 0)
return -1;
if(pkt->data == flush_pkt.data){
avcodec_flush_buffers(dec);
continue;
}
pkt_temp->data = pkt->data;
pkt_temp->size = pkt->size;
/* 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;
}
}
}
/* 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;
}
/* 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->audio_buf1;
is->audio_buf_size = 1024;
memset(is->audio_buf, 0, is->audio_buf_size);
} 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;
if (stream_index < 0 || stream_index >= ic->nb_streams)
return -1;
avctx = ic->streams[stream_index]->codec;
/* prepare audio output */
if (avctx->codec_type == CODEC_TYPE_AUDIO) {
if (avctx->channels > 0) {
avctx->request_channels = FFMIN(2, avctx->channels);
} else {
avctx->request_channels = 2;
}
}
codec = avcodec_find_decoder(avctx->codec_id);
avctx->debug_mv = debug_mv;
avctx->debug = debug;
avctx->workaround_bugs = workaround_bugs;
avctx->lowres = lowres;
if(lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
avctx->idct_algo= idct;
if(fast) avctx->flags2 |= CODEC_FLAG2_FAST;
avctx->skip_frame= skip_frame;
avctx->skip_idct= skip_idct;
avctx->skip_loop_filter= skip_loop_filter;
avctx->error_recognition= error_recognition;
avctx->error_concealment= error_concealment;
avcodec_thread_init(avctx, thread_count);
set_context_opts(avctx, avcodec_opts[avctx->codec_type], 0);
if (!codec ||
avcodec_open(avctx, codec) < 0)
return -1;
/* prepare audio output */
if (avctx->codec_type == CODEC_TYPE_AUDIO) {
wanted_spec.freq = avctx->sample_rate;
wanted_spec.format = AUDIO_S16SYS;
wanted_spec.channels = avctx->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->audio_src_fmt= SAMPLE_FMT_S16;
}
ic->streams[stream_index]->discard = AVDISCARD_DEFAULT;
switch(avctx->codec_type) {
case CODEC_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 CODEC_TYPE_VIDEO:
is->video_stream = stream_index;
is->video_st = ic->streams[stream_index];
// is->video_current_pts_time = av_gettime();
packet_queue_init(&is->videoq);
is->video_tid = SDL_CreateThread(video_thread, is);
break;
case CODEC_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 CODEC_TYPE_AUDIO:
packet_queue_abort(&is->audioq);
SDL_CloseAudio();
packet_queue_end(&is->audioq);
if (is->reformat_ctx)
av_audio_convert_free(is->reformat_ctx);
is->reformat_ctx = NULL;
break;
case CODEC_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 CODEC_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);
switch(avctx->codec_type) {
case CODEC_TYPE_AUDIO:
is->audio_st = NULL;
is->audio_stream = -1;
break;
case CODEC_TYPE_VIDEO:
is->video_st = NULL;
is->video_stream = -1;
break;
case CODEC_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)
{
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;
int err, i, ret;
int st_index[CODEC_TYPE_NB];
int st_count[CODEC_TYPE_NB]={0};
int st_best_packet_count[CODEC_TYPE_NB];
AVPacket pkt1, *pkt = &pkt1;
AVFormatParameters params, *ap = &params;
int eof=0;
ic = avformat_alloc_context();
memset(st_index, -1, sizeof(st_index));
memset(st_best_packet_count, -1, sizeof(st_best_packet_count));
is->video_stream = -1;
is->audio_stream = -1;
is->subtitle_stream = -1;
global_video_state = is;
url_set_interrupt_cb(decode_interrupt_cb);
memset(ap, 0, sizeof(*ap));
ap->prealloced_context = 1;
ap->width = frame_width;
ap->height= frame_height;
ap->time_base= (AVRational){1, 25};
ap->pix_fmt = frame_pix_fmt;
set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM);
err = av_open_input_file(&ic, is->filename, is->iformat, 0, ap);
if (err < 0) {
print_error(is->filename, err);
ret = -1;
goto fail;
}
is->ic = ic;
if(genpts)
ic->flags |= AVFMT_FLAG_GENPTS;
err = av_find_stream_info(ic);
if (err < 0) {
fprintf(stderr, "%s: could not find codec parameters\n", is->filename);
ret = -1;
goto fail;
}
if(ic->pb)
ic->pb->eof_reached= 0; //FIXME hack, ffplay 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++) {
AVStream *st= ic->streams[i];
AVCodecContext *avctx = st->codec;
ic->streams[i]->discard = AVDISCARD_ALL;
if(avctx->codec_type >= (unsigned)CODEC_TYPE_NB)
exit(1);
if(st_count[avctx->codec_type]++ != wanted_stream[avctx->codec_type] && wanted_stream[avctx->codec_type] >= 0)
continue;
if(st_best_packet_count[avctx->codec_type] >= st->codec_info_nb_frames)
continue;
st_best_packet_count[avctx->codec_type]= st->codec_info_nb_frames;
switch(avctx->codec_type) {
case CODEC_TYPE_AUDIO:
if (!audio_disable)
st_index[CODEC_TYPE_AUDIO] = i;
break;
case CODEC_TYPE_VIDEO:
case CODEC_TYPE_SUBTITLE:
if (!video_disable)
st_index[avctx->codec_type] = i;
break;
default:
break;
}
}
if (show_status) {
dump_format(ic, 0, is->filename, 0);
}
/* open the streams */
if (st_index[CODEC_TYPE_AUDIO] >= 0) {
stream_component_open(is, st_index[CODEC_TYPE_AUDIO]);
}
ret=-1;
if (st_index[CODEC_TYPE_VIDEO] >= 0) {
ret= stream_component_open(is, st_index[CODEC_TYPE_VIDEO]);
}
if(ret<0) {
/* add the refresh timer to draw the picture */
schedule_refresh(is, 40);
if (!display_disable)
is->show_audio = 2;
}
if (st_index[CODEC_TYPE_SUBTITLE] >= 0) {
stream_component_open(is, st_index[CODEC_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 ( 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(url_feof(ic->pb) || 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);
}
SDL_Delay(10);
if(autoexit && is->audioq.size + is->videoq.size + is->subtitleq.size ==0){
ret=AVERROR_EOF;
goto fail;
}
continue;
}
ret = av_read_frame(ic, pkt);
if (ret < 0) {
if (ret == AVERROR_EOF)
eof=1;
if (url_ferror(ic->pb))
break;
SDL_Delay(100); /* wait for user event */
continue;
}
if (pkt->stream_index == is->audio_stream) {
packet_queue_put(&is->audioq, pkt);
} else if (pkt->stream_index == is->video_stream) {
packet_queue_put(&is->videoq, pkt);
} else if (pkt->stream_index == is->subtitle_stream) {
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) {
av_close_input_file(is->ic);
is->ic = NULL; /* safety */
}
url_set_interrupt_cb(NULL);
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_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);
/* free all pictures */
for(i=0;i<VIDEO_PICTURE_QUEUE_SIZE; i++) {
vp = &is->pictq[i];
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 (is->img_convert_ctx)
sws_freeContext(is->img_convert_ctx);
av_free(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 == CODEC_TYPE_VIDEO)
start_index = is->video_stream;
else if (codec_type == CODEC_TYPE_AUDIO)
start_index = is->audio_stream;
else
start_index = is->subtitle_stream;
if (start_index < (codec_type == CODEC_TYPE_SUBTITLE ? -1 : 0))
return;
stream_index = start_index;
for(;;) {
if (++stream_index >= is->ic->nb_streams)
{
if (codec_type == CODEC_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 CODEC_TYPE_AUDIO:
if (st->codec->sample_rate != 0 &&
st->codec->channels != 0)
goto the_end;
break;
case CODEC_TYPE_VIDEO:
case CODEC_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)
{
is_full_screen = !is_full_screen;
if (!fs_screen_width) {
/* use default SDL method */
// SDL_WM_ToggleFullScreen(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 do_exit(void)
{
int i;
if (cur_stream) {
stream_close(cur_stream);
cur_stream = NULL;
}
for (i = 0; i < CODEC_TYPE_NB; i++)
av_free(avcodec_opts[i]);
av_free(avformat_opts);
av_free(sws_opts);
if (show_status)
printf("\n");
SDL_Quit();
exit(0);
}
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:
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, CODEC_TYPE_AUDIO);
break;
case SDLK_v:
if (cur_stream)
stream_cycle_channel(cur_stream, CODEC_TYPE_VIDEO);
break;
case SDLK_t:
if (cur_stream)
stream_cycle_channel(cur_stream, CODEC_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 = url_ftell(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:
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= url_fsize(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);
break;
default:
break;
}
}
}
static void opt_frame_size(const char *arg)
{
if (av_parse_video_frame_size(&frame_width, &frame_height, arg) < 0) {
fprintf(stderr, "Incorrect frame size\n");
exit(1);
}
if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
fprintf(stderr, "Frame size must be a multiple of 2\n");
exit(1);
}
}
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 void opt_format(const char *arg)
{
file_iformat = av_find_input_format(arg);
if (!file_iformat) {
fprintf(stderr, "Unknown input format: %s\n", arg);
exit(1);
}
}
static void opt_frame_pix_fmt(const char *arg)
{
frame_pix_fmt = av_get_pix_fmt(arg);
}
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_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 int opt_thread_count(const char *opt, const char *arg)
{
thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
#if !HAVE_THREADS
fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
#endif
return 0;
}
static const OptionDef options[] = {
#include "cmdutils_common_opts.h"
{ "x", HAS_ARG | OPT_FUNC2, {(void*)opt_width}, "force displayed width", "width" },
{ "y", HAS_ARG | OPT_FUNC2, {(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[CODEC_TYPE_AUDIO]}, "select desired audio stream", "stream_number" },
{ "vst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[CODEC_TYPE_VIDEO]}, "select desired video stream", "stream_number" },
{ "sst", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&wanted_stream[CODEC_TYPE_SUBTITLE]}, "select desired subtitle stream", "stream_number" },
{ "ss", HAS_ARG | OPT_FUNC2, {(void*)&opt_seek}, "seek to a given position in seconds", "pos" },
{ "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_FUNC2 | 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_FUNC2 | 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", ""},
{ "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&lowres}, "", "" },
{ "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" },
{ "er", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_recognition}, "set error detection threshold (0-4)", "threshold" },
{ "ec", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&error_concealment}, "set error concealment options", "bit_mask" },
{ "sync", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_sync}, "set audio-video sync. type (type=audio/video/ext)", "type" },
{ "threads", HAS_ARG | OPT_FUNC2 | OPT_EXPERT, {(void*)opt_thread_count}, "thread count", "count" },
{ "autoexit", OPT_BOOL | OPT_EXPERT, {(void*)&autoexit}, "exit at the end", "" },
{ "default", OPT_FUNC2 | HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
{ NULL, },
};
static void show_usage(void)
{
printf("Simple media player\n");
printf("usage: ffplay [options] input_file\n");
printf("\n");
}
static void show_help(void)
{
show_usage();
show_help_options(options, "Main options:\n",
OPT_EXPERT, 0);
show_help_options(options, "\nAdvanced options:\n",
OPT_EXPERT, OPT_EXPERT);
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"
"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(const char *filename)
{
if (!strcmp(filename, "-"))
filename = "pipe:";
input_filename = filename;
}
/* Called from the main */
int main(int argc, char **argv)
{
int flags, i;
/* register all codecs, demux and protocols */
avcodec_register_all();
avdevice_register_all();
av_register_all();
for(i=0; i<CODEC_TYPE_NB; i++){
avcodec_opts[i]= avcodec_alloc_context2(i);
}
avformat_opts = avformat_alloc_context();
sws_opts = sws_getContext(16,16,0, 16,16,0, sws_flags, NULL,NULL,NULL);
show_banner();
parse_options(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 ffplay'\n");
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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