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mpeg2dec.c
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mpeg2dec.c
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/*
* mpeg2dec.c
* Copyright (C) 2000-2003 Michel Lespinasse <[email protected]>
* Copyright (C) 1999-2000 Aaron Holtzman <[email protected]>
*
* This file is part of mpeg2dec, a free MPEG-2 video stream decoder.
* See http://libmpeg2.sourceforge.net/ for updates.
*
* mpeg2dec is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* mpeg2dec 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef _WIN32
#include <windows.h>
#include <stdio.h>
#include <io.h>
#include <conio.h>
#include<excpt.h>
#endif
//#include "config.h"
#define SELFTEST
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <signal.h>
#include <getopt.h>
#ifdef HAVE_IO_H
#include <fcntl.h>
#endif
#ifdef LIBVO_SDL
#include <SDL/SDL.h>
#endif
#include <inttypes.h>
int pass = 0;
double test_pts = 0.0;
#define inline __inline
#include <libavformat/avformat.h>
#include <libavcodec/avcodec.h>
#include <libavutil/avutil.h>
#include <libavutil/samplefmt.h>
int av_log_level;
#undef AV_TIME_BASE_Q
static AVRational AV_TIME_BASE_Q = {1, AV_TIME_BASE};
#define SDL_AUDIO_BUFFER_SIZE 1024
#define MAX_AUDIOQ_SIZE (5 * 16 * 1024)
#define MAX_VIDEOQ_SIZE (5 * 256 * 1024)
#define AV_SYNC_THRESHOLD 0.01
#define AV_NOSYNC_THRESHOLD 10.0
#define SAMPLE_CORRECTION_PERCENT_MAX 30
#define AUDIO_DIFF_AVG_NB 10
#define FF_ALLOC_EVENT (SDL_USEREVENT)
#define FF_REFRESH_EVENT (SDL_USEREVENT + 1)
#define FF_QUIT_EVENT (SDL_USEREVENT + 2)
#define VIDEO_PICTURE_QUEUE_SIZE 1
#define DEFAULT_AV_SYNC_TYPE AV_SYNC_ADUIO_MASTER
typedef struct VideoPicture
{
int width, height; /* source height & width */
int allocated;
double pts;
} VideoPicture;
typedef struct VideoState
{
AVFormatContext *pFormatCtx;
int videoStream, audioStream, subtitleStream;
int av_sync_type;
// double external_clock; /* external clock base */
// int64_t external_clock_time;
int seek_req;
double seek_pts;
int seek_flags;
__int64 seek_pos;
double audio_clock;
AVStream *audio_st;
AVStream *subtitle_st;
DECLARE_ALIGNED(16, uint8_t, audio_buf[(AVCODEC_MAX_AUDIO_FRAME_SIZE * 3) / 2]);
unsigned int audio_buf_size;
unsigned int audio_buf_index;
AVPacket audio_pkt;
AVPacket audio_pkt_temp;
// uint8_t *audio_pkt_data;
// int audio_pkt_size;
int audio_hw_buf_size;
double audio_diff_cum; /* used for AV difference average computation */
double audio_diff_avg_coef;
double audio_diff_threshold;
int audio_diff_avg_count;
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
double video_clock_submitted;
double video_current_pts; ///<current displayed pts (different from video_clock if frame fifos are used)
int64_t video_current_pts_time; ///<time (av_gettime) at which we updated video_current_pts - used to have running video pts
AVStream *video_st;
AVFrame *pFrame;
char filename[1024];
int quit;
AVFrame *frame;
double duration;
double fps;
} VideoState;
VideoState *is;
enum
{
AV_SYNC_AUDIO_MASTER,
AV_SYNC_VIDEO_MASTER,
AV_SYNC_EXTERNAL_MASTER,
};
/* Since we only have one decoding thread, the Big Struct
can be global in case we need it. */
VideoState *global_video_state;
AVPacket flush_pkt;
__int64 pev_best_effort_timestamp = 0;
int video_stream_index = -1;
int audio_stream_index = -1;
int width, height;
int have_frame_rate ;
int stream_index;
__int64 best_effort_timestamp;
#define USE_ASF 1
//#include "mpeg2convert.h"
#include "comskip.h"
extern int coding_type;
#ifdef _WIN32
#include <sys/timeb.h>
static inline void gettimeofday(struct timeval * tp, void * dummy)
{
struct _timeb tm;
_ftime (&tm);
tp->tv_sec = tm.time;
tp->tv_usec = tm.millitm * 1000;
}
#endif
static FILE * in_file;
static FILE * sample_file;
static FILE * timing_file = 0;
extern int thread_count;
int is_AC3;
int AC3_rate;
int AC3_mode;
int is_h264=0;
int is_AAC=0;
extern unsigned int AC3_sampling_rate; //AC3
extern int AC3_byterate;
int demux_pid=0;
int demux_asf=0;
int last_pid;
#define PIDS 100
#define PID_MASK 0x1fff
int pids[PIDS];
int pid_type[PIDS];
int pid_pcr[PIDS];
int pid_pid[PIDS];
int top_pid_count[PID_MASK+1];
int top_pid_pid;
int pid;
int selected_video_pid=0;
int selected_audio_pid=0;
int selected_subtitle_pid=0;
int selection_restart_count = 0;
int found_pids=0;
__int64 pts;
__int64 initial_pts;
__int64 final_pts;
double pts_offset = 0.0;
int initial_pts_set = 0;
double initial_apts;
int initial_apts_set = 0;
//int bitrate;
int muxrate,byterate=10000;
#define PTS_FRAME (double)(1.0 / get_fps())
//#define PTS_FRAME (int) (90000 / get_fps())
#define SAMPLE_TO_FRAME 2.8125
//#define SAMPLE_TO_FRAME (90000.0/(get_fps() * 1000.0))
//#define BYTERATE ((int)(21400 * 25 / get_fps()))
#define FSEEK _fseeki64
#define FTELL _ftelli64
// The following two functions are undocumented and not included in any public header,
// so we need to declare them ourselves
extern int _fseeki64(FILE *, __int64, int);
extern __int64 _ftelli64(FILE *);
int soft_seeking=0;
extern char basename[];
char field_t;
char tempstring[512];
FILE *myfopen(const char * f, char * m);
#define DUMP_OPEN if (output_timing) { sprintf(tempstring, "%s.timing.csv", basename); timing_file = myfopen(tempstring, "w"); DUMP_HEADER }
#define DUMP_HEADER if (timing_file) fprintf(timing_file, "type ,dts ,pts ,clock ,delta ,offset\n");
#define DUMP_TIMING(T, D, P, C) if (timing_file && !csStepping && !csJumping && !csStartJump) fprintf(timing_file, "%7s, %12.3f,%12.3f, %12.3f, %12.3f, %12.3f,\n", \
T, (double) (D)/frame_delay, (double) (P)/frame_delay, (double) (C)/frame_delay, ((double) (P) - (double) (C))/frame_delay, pts_offset/frame_delay );
#define DUMP_CLOSE if (timing_file) { fclose(timing_file); timing_file = NULL; }
extern int skip_B_frames;
extern int lowres;
static int sigint = 0;
static int verbose = 0;
extern int selftest;
#ifdef _DEBUG
static int dump_seek = 1; // Set to 1 to dump the seeking process
#else
static int dump_seek = 0; // Set to 1 to dump the seeking process
#endif
#include <sys/stat.h>
//#include <unistd.h>
struct _stati64 instat;
#define filesize instat.st_size
extern int frame_count;
int framenum;
fpos_t filepos;
fpos_t fileendpos;
extern int standoff;
__int64 goppos,infopos,packpos,ptspos,headerpos,frompos,SeekPos;
extern int max_repair_size;
extern int variable_bitrate;
int max_internal_repair_size = 40;
int reviewing = 0;
int count=0;
int currentSecond=0;
int cur_hour = 0;
int cur_minute = 0;
int cur_second = 0;
extern char HomeDir[256];
extern int processCC;
int reorderCC = 0;
extern int live_tv;
int csRestart;
int csStartJump;
int csStepping;
int csJumping;
int csFound;
int seekIter = 0;
int seekDirection = 0;
extern FILE * out_file;
extern uint8_t ccData[500];
extern int ccDataLen;
static uint8_t prevccData[500];
static int prevccDataLen;
char prevfield_t = 0;
extern int height,width, videowidth;
extern int output_debugwindow;
extern int output_console;
extern int output_timing;
extern int output_srt;
extern int output_smi;
extern unsigned char *frame_ptr;
extern int lastFrameWasSceneChange;
extern int live_tv_retries;
extern int dvrms_live_tv_retries;
int retries;
static unsigned int frame_period;
extern void set_fps(unsigned int frame_period);
extern void dump_video (char *start, char *end);
extern void dump_audio (char *start, char *end);
extern void Debug(int level, char* fmt, ...);
extern void dump_video_start(void);
extern void dump_audio_start(void);
void file_open();
int DetectCommercials(int, double);
int BuildMasterCommList(void);
FILE* LoadSettings(int argc, char ** argv);
void ProcessCCData(void);
void dump_data(char *start, int length);
static void signal_handler (int sig)
{
sigint = 1;
signal (sig, SIG_DFL);
//return (RETSIGTYPE)0;
return;
}
#define AUDIOBUFFER 800000
static double base_apts, apts;
static DECLARE_ALIGNED(16, short, audio_buffer[AUDIOBUFFER]);
static short *audio_buffer_ptr = audio_buffer;
static int audio_samples = 0;
static int sound_frame_counter = 0;
extern double get_fps();
extern int get_samplerate();
extern int get_channels();
extern void add_volumes(int *volumes, int nr_frames);
extern void set_frame_volume(uint32_t framenr, int volume);
static int max_volume_found = 0;
int ms_audio_delay = 5;
int tracks_without_sound = 0;
int frames_without_sound = 0;
#define MAX_FRAMES_WITHOUT_SOUND 100
int frames_with_loud_sound = 0;
void sound_to_frames(VideoState *is, short *b, int s, int format)
{
int i,n;
int volume;
int delta = 0;
int s_per_frame;
short *buffer;
float *fb;
audio_samples = audio_buffer_ptr - audio_buffer;
n = is->audio_st->codec->channels * is->audio_st->codec->sample_rate;
base_apts = (is->audio_clock - ((double)audio_samples /(double)(n)));
s_per_frame = (int) ((double)(is->audio_st->codec->sample_rate) * (double) is->audio_st->codec->channels / get_fps());
if (s_per_frame == 0)
return;
if (format == AV_SAMPLE_FMT_FLTP)
{
fb = (float*)b;
if (s > 0)
{
for (i = 0; i < s; i++)
{
*audio_buffer_ptr++ = (short) ((*fb++) * 64000);
if ((LONG_PTR) audio_buffer_ptr > (LONG_PTR) &audio_buffer[AUDIOBUFFER-10])
break;
}
}
}
else
{
if (s > 0)
{
for (i = 0; i < s; i++)
{
*audio_buffer_ptr++ = *b++;
}
}
}
audio_samples = audio_buffer_ptr - audio_buffer;
buffer = audio_buffer;
while (audio_samples >= s_per_frame)
{
if (sample_file) fprintf(sample_file, "Frame %i\n", sound_frame_counter);
volume = 0;
for (i = 0; i < s_per_frame; i++)
{
if (sample_file) fprintf(sample_file, "%i\n", *buffer);
volume += (*buffer>0 ? *buffer : - *buffer);
buffer++;
}
volume = volume/s_per_frame;
audio_samples -= s_per_frame;
if (sound_frame_counter == 8)
sound_frame_counter = sound_frame_counter;
if (volume == 0)
{
frames_without_sound++;
}
else if (volume > 20000)
{
if (volume > 256000)
volume = 220000;
frames_with_loud_sound++;
volume = -1;
}
else
{
frames_without_sound = 0;
}
if (max_volume_found < volume)
max_volume_found = volume;
apts = base_apts;
delta = (base_apts - is->video_clock) * get_fps();
// delta = (__int64)(apts/PTS_FRAME) - (__int64)(pts/PTS_FRAME);
if (-max_internal_repair_size < delta && delta < max_internal_repair_size && abs( sound_frame_counter - delta - framenum) > 20 )
{
Debug(1, "Audio PTS jumped %d frames at frame %d\n", -sound_frame_counter + delta + framenum, framenum);
sound_frame_counter = delta + framenum;
}
// DUMP_TIMING("a frame", apts, is->video_clock);
set_frame_volume((demux_asf?ms_audio_delay:0)+sound_frame_counter++, volume);
base_apts += (double)s_per_frame/(double)n;
}
audio_buffer_ptr = audio_buffer;
if (audio_samples > 0)
{
for (i = 0; i < audio_samples; i++)
{
*audio_buffer_ptr++ = *buffer++;
}
}
}
#define STORAGE_SIZE 1000000
static short storage_buf[STORAGE_SIZE];
void audio_packet_process(VideoState *is, AVPacket *pkt)
{
int prev_codec_id = -1;
double frame_delay = 1.0;
int len1, data_size, n;
int dec_channel_layout;
AVPacket *pkt_temp = &is->audio_pkt_temp;
double pts;
int got_frame;
if (!reviewing)
{
dump_audio_start();
dump_audio((char *)pkt->data,(char *) (pkt->data + pkt->size));
}
pkt_temp->data = pkt->data;
pkt_temp->size = pkt->size;
/* Try to align on packet boundary as some demuxers don't do that, in particular dvr-ms
if (is->audio_st->codec->codec_id == CODEC_ID_MP1) {
while (pkt_temp->size > 2 && (pkt_temp->data[0] != 0xff || pkt_temp->data[1] != 0xe0) ) {
pkt_temp->data++;
pkt_temp->size--;
}
}
*/
n = (is->audio_st->codec->bits_per_coded_sample / 8) * is->audio_st->codec->channels * is->audio_st->codec->sample_rate;
#ifdef OLD_AUDIO_PTS_HANDLING
/* if update, update the audio clock w/pts */
if(pkt->pts == AV_NOPTS_VALUE)
{
pts = 0.0;
}
else
{
pts = av_q2d(is->audio_st->time_base)* ( pkt->pts - (is->video_st->start_time != AV_NOPTS_VALUE ? is->video_st->start_time : 0));
}
pts = pts + pts_offset;
// Debug(0 ,"apst[%3d] = %12.3f\n", framenum, pts);
if (pts != 0)
{
if (is->audio_clock != 0)
{
if ((pts - is->audio_clock) < -0.999 || (pts - is->audio_clock) > max_repair_size/get_fps() )
{
Debug(1 ,"Audio jumped by %6.3f at frame %d\n", (pts - is->audio_clock), framenum);
// DUMP_TIMING("a set", pts, is->audio_clock);
is->audio_clock = pts;
}
else
{
// DUMP_TIMING("a free", pts, is->audio_clock);
// Do nothing
}
}
else
{
// DUMP_TIMING("ajmpset", pts, is->audio_clock);
is->audio_clock = pts;
}
}
else
{
/* if we aren't given a pts, set it to the clock */
// DUMP_TIMING("a tick", pts, is->audio_clock);
pts = is->audio_clock;
}
#else
if (pkt->pts != AV_NOPTS_VALUE)
{
is->audio_clock = av_q2d(is->audio_st->time_base)*( pkt->pts - (is->video_st->start_time != AV_NOPTS_VALUE ? is->video_st->start_time : 0));
}
#endif
// fprintf(stderr, "sac = %f\n", is->audio_clock);
while(pkt_temp->size > 0)
{
data_size = STORAGE_SIZE;
if (!is->frame)
{
if (!(is->frame = avcodec_alloc_frame()))
return;
}
else
avcodec_get_frame_defaults(is->frame);
len1 = avcodec_decode_audio4(is->audio_st->codec, is->frame, &got_frame, pkt_temp);
if (prev_codec_id != -1 && prev_codec_id != is->audio_st->codec->codec_id)
{
Debug(2 ,"Audio format change\n");
}
prev_codec_id = is->audio_st->codec->codec_id;
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 */
continue;
}
data_size = av_samples_get_buffer_size(NULL, is->frame->channels,
is->frame->nb_samples,
is->frame->format, 1);
dec_channel_layout =
(is->frame->channel_layout && is->frame->channels == av_get_channel_layout_nb_channels(is->frame->channel_layout)) ?
is->frame->channel_layout : av_get_default_channel_layout(is->frame->channels);
// fprintf(stderr, "Audio %f\n", is->audio_clock);
if (data_size > 0)
{
sound_to_frames(is, (short *)is->frame->data[0], data_size / av_get_bytes_per_sample(is->frame->format), is->frame->format);
}
is->audio_clock += (double)data_size /
(is->frame->channels * is->frame->sample_rate * av_get_bytes_per_sample(is->frame->format));
}
}
static void print_fps (int final)
{
static uint32_t frame_counter = 0;
static struct timeval tv_beg, tv_start;
static int total_elapsed;
static int last_count = 0;
struct timeval tv_end;
double fps, tfps;
int frames, elapsed;
char cur_pos[100] = "0:00:00";
if (verbose)
return;
if(csStepping)
return;
if(final < 0)
{
frame_counter = 0;
last_count = 0;
return;
}
again:
gettimeofday (&tv_end, NULL);
if (!frame_counter)
{
tv_start = tv_beg = tv_end;
signal (SIGINT, signal_handler);
}
elapsed = (tv_end.tv_sec - tv_beg.tv_sec) * 100 + (tv_end.tv_usec - tv_beg.tv_usec) / 10000;
total_elapsed = (tv_end.tv_sec - tv_start.tv_sec) * 100 + (tv_end.tv_usec - tv_start.tv_usec) / 10000;
if (final)
{
if (total_elapsed)
tfps = frame_counter * 100.0 / total_elapsed;
else
tfps = 0;
fprintf (stderr,"\n%d frames decoded in %.2f seconds (%.2f fps)\n",
frame_counter, total_elapsed / 100.0, tfps);
fflush(stderr);
return;
}
frame_counter++;
frames = frame_counter - last_count;
#ifdef DONATOR
#else
#ifndef DEBUG
if (is_h264 && frames > 15 && elapsed < 100)
{
Sleep((DWORD)100);
goto again;
}
#endif
#endif
if (elapsed < 100) /* only display every 1.00 seconds */
return;
tv_beg = tv_end;
cur_second = (int)((double)framenum / get_fps());
cur_hour = cur_second / (60 * 60);
cur_second -= cur_hour * 60 * 60;
cur_minute = cur_second / 60;
cur_second -= cur_minute * 60;
sprintf(cur_pos, "%2i:%.2i:%.2i", cur_hour, cur_minute, cur_second);
fps = frames * 100.0 / elapsed;
tfps = frame_counter * 100.0 / total_elapsed;
fprintf (stderr, "%s - %d frames in %.2f sec(%.2f fps), "
"%.2f sec(%.2f fps), %d%%\r", cur_pos, frame_counter,
total_elapsed / 100.0, tfps, elapsed / 100.0, fps, (int) (100.0 * ((double)(framenum) / get_fps()) / global_video_state->duration));
fflush(stderr);
last_count = frame_counter;
}
char field_t;
void SetField(char t)
{
field_t = t;
// printf(" %c", t);
}
static void ResetInputFile()
{
global_video_state->seek_req = TRUE;
global_video_state->seek_pos = 0;
global_video_state->seek_pts = 0.0;
pev_best_effort_timestamp = 0;
#ifdef PROCESS_CC
if (output_srt || output_smi) CEW_reinit();
#endif
framenum = 0;
// frame_count = 0;
sound_frame_counter = 0;
initial_pts = 0;
initial_pts_set = 0;
initial_apts_set = 0;
initial_apts = 0;
audio_samples = 0;
best_effort_timestamp = 0;
#ifndef _DEBUG
// DUMP_CLOSE
// DUMP_OPEN
#endif
}
int SubmitFrame(AVStream *video_st, AVFrame *pFrame , double pts)
{
int res=0;
int changed = 0;
AVCodecContext *pCodecCtx = video_st->codec;
// bitrate = pFrame->bit_rate;
if (pFrame->linesize[0] > 2000 || pFrame->height > 1200 || pFrame->linesize[0] < 100 || pFrame->height < 100)
{
// printf("Panic: illegal height, width or frame period\n");
frame_ptr = NULL;
return(0);
}
if (height != pFrame->height && pFrame->height > 100 && pFrame->height < 2000)
{
height= pFrame->height;
changed = 1;
}
if (width != pFrame->linesize[0] && pFrame->linesize[0] > 100 && pFrame->linesize[0] < 2000)
{
width= pFrame->linesize[0];
changed = 1;
}
if (videowidth != pFrame->width && pFrame->width > 100 && pFrame->width < 2000)
{
videowidth= pFrame->width;
changed = 1;
}
if (changed) Debug(2, "Format changed to [%d : %d]\n", videowidth, height);
infopos = headerpos;
frame_ptr = pFrame->data[0];
if (frame_ptr == NULL)
{
return(0);; // return; // exit(2);
}
if (pFrame->pict_type == AV_PICTURE_TYPE_B)
SetField('B');
else if (pFrame->pict_type == AV_PICTURE_TYPE_I)
SetField('I');
else
SetField('P');
if (framenum == 0 && pass == 0 && test_pts == 0.0)
test_pts = pts;
if (framenum == 0 && pass > 0 && test_pts != pts)
Debug(1,"Reset File Failed, initial pts = %6.3f, seek pts = %6.3f, pass = %d\n", test_pts, pts, pass+1);
if (framenum == 0)
pass++;
#ifdef SELFTEST
if (selftest == 2 && framenum > 20)
{
if (pass > 1)
exit(1);
ResetInputFile();
}
#endif
if (!reviewing)
{
print_fps (0);
if (res == 0)
res = DetectCommercials((int)framenum, pts);
framenum++;
}
return (res);
}
Set_seek(VideoState *is, double pts, double length)
{
AVFormatContext *ic = is->pFormatCtx;
is->seek_flags = AVSEEK_FLAG_ANY;
is->seek_flags = AVSEEK_FLAG_BACKWARD;
is->seek_req = TRUE;
if (is->duration <= 0)
{
uint64_t size = avio_size(ic->pb);
pts = size*pts/length;
is->seek_flags |= AVSEEK_FLAG_BYTE;
}
is->seek_pos = (pts - 1.6 < 0.0 ? 0.0 : pts - 1.6) / av_q2d(is->video_st->time_base);
if (is->video_st->start_time != AV_NOPTS_VALUE)
{
is->seek_pos += is->video_st->start_time;
}
is->seek_pts = pts;
}
void DecodeOnePicture(FILE * f, double pts, double length)
{
double frame_delay = 1.0;
VideoState *is = global_video_state;
AVPacket *packet;
int ret;
int single_frame=0;
int seek_flags = 0;
int count = 0;
int64_t pack_pts=0, comp_pts=0, pack_duration=0;
file_open();
is = global_video_state;
reviewing = 1;
Set_seek(is, pts, length);
pev_best_effort_timestamp = 0;
best_effort_timestamp = 0;
pts_offset = 0.0;
// Debug ( 5, "Seek to %f\n", pts);
frame_ptr = NULL;
packet = &(is->audio_pkt);
for(;;)
{
if(is->quit)
{
break;
}
// seek stuff goes here
if(is->seek_req)
{
ret = avformat_seek_file(is->pFormatCtx, is->videoStream, INT64_MIN, is->seek_pos, INT64_MAX, is->seek_flags);
pev_best_effort_timestamp = 0;
best_effort_timestamp = 0;
is->video_clock = 0.0;
is->audio_clock = 0.0;
if(ret < 0)
{
if (is->pFormatCtx->iformat->read_seek)
{
printf("format specific\n");
}
else if(is->pFormatCtx->iformat->read_timestamp)
{
printf("frame_binary\n");
}
else
{
printf("generic\n");
}
fprintf(stderr, "%s: error while seeking. target: %6.3f, stream_index: %d\n", is->pFormatCtx->filename, pts, stream_index);
}
if(is->audioStream >= 0)
{
avcodec_flush_buffers(is->audio_st->codec);
}
if(is->videoStream >= 0)
{
avcodec_flush_buffers(is->video_st->codec);
}
is->seek_req = 0;
}
if(av_read_frame(is->pFormatCtx, packet) < 0)
{
break;
}
if(packet->stream_index == is->videoStream)
{
if (packet->pts != AV_NOPTS_VALUE)
comp_pts = packet->pts;
pack_pts = comp_pts; // av_rescale_q(comp_pts, is->video_st->time_base, AV_TIME_BASE_Q);
pack_duration = packet->duration; //av_rescale_q(packet->duration, is->video_st->time_base, AV_TIME_BASE_Q);
comp_pts += packet->duration;
pass = 0;
retries = 1;
if (video_packet_process(is, packet) )
{
if (retries == 0)
{
av_free_packet(packet);
break;
}
/*
double frame_delay = av_q2d(is->video_st->codec->time_base)* is->video_st->codec->ticks_per_frame; // <------------------------ frame delay is the time in seconds till the next frame
if (is->video_clock - is->seek_pts > -frame_delay / 2.0)
{
av_free_packet(packet);
break;
}
if (is->video_clock + (pack_duration * av_q2d(is->video_st->time_base)) >= is->seek_pts)
{
av_free_packet(packet);
break;
}
*/
}
}
else if(packet->stream_index == is->audioStream)
{
// audio_packet_process(is, packet);
}
else
{
// Do nothing
}
av_free_packet(packet);
}
reviewing = 0;
}
void raise_exception(void)
{
*(int *)0 = 0;
}
int filter(void)
{
printf("Exception raised, Comskip is terminating\n");
exit(99);
}
// #include "libavformat/avformat.h"
extern char mpegfilename[];
int video_packet_process(VideoState *is,AVPacket *packet)
{
double frame_delay;
int len1, frameFinished;
double pts, dts;
double real_pts;
static int summed_repeat = 0;
double calculated_delay;
if (!reviewing)
{
dump_video_start();
dump_video((char *)packet->data,(char *) (packet->data + packet->size));
}
real_pts = 0.0;
pts = 0;
// is->video_st->codec->flags |= CODEC_FLAG_GRAY;
// Decode video frame
len1 = avcodec_decode_video2(is->video_st->codec, is->pFrame, &frameFinished,
packet);