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ffmpeg.c
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/*
* FFmpeg main
* Copyright (c) 2000-2003 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
*/
/* needed for usleep() */
#define _XOPEN_SOURCE 600
#include "config.h"
#include <ctype.h>
#include <string.h>
#include <math.h>
#include <stdlib.h>
#include <errno.h>
#include <signal.h>
#include <limits.h>
#include <unistd.h>
#include "libavformat/avformat.h"
#include "libavdevice/avdevice.h"
#include "libswscale/swscale.h"
#include "libavcodec/opt.h"
#include "libavcodec/audioconvert.h"
#include "libavcodec/colorspace.h"
#include "libavutil/fifo.h"
#include "libavutil/avstring.h"
#include "libavformat/os_support.h"
#if HAVE_SYS_RESOURCE_H
#include <sys/types.h>
#include <sys/resource.h>
#elif HAVE_GETPROCESSTIMES
#include <windows.h>
#endif
#if HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif
#if HAVE_TERMIOS_H
#include <fcntl.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <termios.h>
#elif HAVE_CONIO_H
#include <conio.h>
#endif
#undef time //needed because HAVE_AV_CONFIG_H is defined on top
#include <time.h>
#include "cmdutils.h"
#undef NDEBUG
#include <assert.h>
#undef exit
const char program_name[] = "FFmpeg";
const int program_birth_year = 2000;
/* select an input stream for an output stream */
typedef struct AVStreamMap {
int file_index;
int stream_index;
int sync_file_index;
int sync_stream_index;
} AVStreamMap;
/** select an input file for an output file */
typedef struct AVMetaDataMap {
int out_file;
int in_file;
} AVMetaDataMap;
static const OptionDef options[];
#define MAX_FILES 20
static const char *last_asked_format = NULL;
static AVFormatContext *input_files[MAX_FILES];
static int64_t input_files_ts_offset[MAX_FILES];
static double input_files_ts_scale[MAX_FILES][MAX_STREAMS];
static AVCodec *input_codecs[MAX_FILES*MAX_STREAMS];
static int nb_input_files = 0;
static int nb_icodecs;
static AVFormatContext *output_files[MAX_FILES];
static AVCodec *output_codecs[MAX_FILES*MAX_STREAMS];
static int nb_output_files = 0;
static int nb_ocodecs;
static AVStreamMap stream_maps[MAX_FILES*MAX_STREAMS];
static int nb_stream_maps;
static AVMetaDataMap meta_data_maps[MAX_FILES];
static int nb_meta_data_maps;
static int frame_width = 0;
static int frame_height = 0;
static float frame_aspect_ratio = 0;
static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
static enum SampleFormat audio_sample_fmt = SAMPLE_FMT_NONE;
static int frame_padtop = 0;
static int frame_padbottom = 0;
static int frame_padleft = 0;
static int frame_padright = 0;
static int padcolor[3] = {16,128,128}; /* default to black */
static int frame_topBand = 0;
static int frame_bottomBand = 0;
static int frame_leftBand = 0;
static int frame_rightBand = 0;
static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
static AVRational frame_rate;
static float video_qscale = 0;
static uint16_t *intra_matrix = NULL;
static uint16_t *inter_matrix = NULL;
static const char *video_rc_override_string=NULL;
static int video_disable = 0;
static int video_discard = 0;
static char *video_codec_name = NULL;
static int video_codec_tag = 0;
static char *video_language = NULL;
static int same_quality = 0;
static int do_deinterlace = 0;
static int top_field_first = -1;
static int me_threshold = 0;
static int intra_dc_precision = 8;
static int loop_input = 0;
static int loop_output = AVFMT_NOOUTPUTLOOP;
static int qp_hist = 0;
static int intra_only = 0;
static int audio_sample_rate = 44100;
static int64_t channel_layout = 0;
#define QSCALE_NONE -99999
static float audio_qscale = QSCALE_NONE;
static int audio_disable = 0;
static int audio_channels = 1;
static char *audio_codec_name = NULL;
static int audio_codec_tag = 0;
static char *audio_language = NULL;
static int subtitle_disable = 0;
static char *subtitle_codec_name = NULL;
static char *subtitle_language = NULL;
static int subtitle_codec_tag = 0;
static float mux_preload= 0.5;
static float mux_max_delay= 0.7;
static int64_t recording_time = INT64_MAX;
static int64_t start_time = 0;
static int64_t rec_timestamp = 0;
static int64_t input_ts_offset = 0;
static int file_overwrite = 0;
static int metadata_count;
static AVMetadataTag *metadata;
static int do_benchmark = 0;
static int do_hex_dump = 0;
static int do_pkt_dump = 0;
static int do_psnr = 0;
static int do_pass = 0;
static char *pass_logfilename_prefix = NULL;
static int audio_stream_copy = 0;
static int video_stream_copy = 0;
static int subtitle_stream_copy = 0;
static int video_sync_method= -1;
static int audio_sync_method= 0;
static float audio_drift_threshold= 0.1;
static int copy_ts= 0;
static int opt_shortest = 0;
static int video_global_header = 0;
static char *vstats_filename;
static FILE *vstats_file;
static int opt_programid = 0;
static int copy_initial_nonkeyframes = 0;
static int rate_emu = 0;
static int video_channel = 0;
static char *video_standard;
static int audio_volume = 256;
static int exit_on_error = 0;
static int using_stdin = 0;
static int verbose = 1;
static int thread_count= 1;
static int q_pressed = 0;
static int64_t video_size = 0;
static int64_t audio_size = 0;
static int64_t extra_size = 0;
static int nb_frames_dup = 0;
static int nb_frames_drop = 0;
static int input_sync;
static uint64_t limit_filesize = 0;
static int force_fps = 0;
static int pgmyuv_compatibility_hack=0;
static float dts_delta_threshold = 10;
static unsigned int sws_flags = SWS_BICUBIC;
static int64_t timer_start;
static uint8_t *audio_buf;
static uint8_t *audio_out;
unsigned int allocated_audio_out_size, allocated_audio_buf_size;
static short *samples;
static AVBitStreamFilterContext *video_bitstream_filters=NULL;
static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
static AVBitStreamFilterContext *bitstream_filters[MAX_FILES][MAX_STREAMS];
#define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
struct AVInputStream;
typedef struct AVOutputStream {
int file_index; /* file index */
int index; /* stream index in the output file */
int source_index; /* AVInputStream index */
AVStream *st; /* stream in the output file */
int encoding_needed; /* true if encoding needed for this stream */
int frame_number;
/* input pts and corresponding output pts
for A/V sync */
//double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
struct AVInputStream *sync_ist; /* input stream to sync against */
int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
/* video only */
int video_resample;
AVFrame pict_tmp; /* temporary image for resampling */
struct SwsContext *img_resample_ctx; /* for image resampling */
int resample_height;
int resample_width;
int resample_pix_fmt;
/* full frame size of first frame */
int original_height;
int original_width;
/* cropping area sizes */
int video_crop;
int topBand;
int bottomBand;
int leftBand;
int rightBand;
/* cropping area of first frame */
int original_topBand;
int original_bottomBand;
int original_leftBand;
int original_rightBand;
/* padding area sizes */
int video_pad;
int padtop;
int padbottom;
int padleft;
int padright;
/* audio only */
int audio_resample;
ReSampleContext *resample; /* for audio resampling */
int reformat_pair;
AVAudioConvert *reformat_ctx;
AVFifoBuffer *fifo; /* for compression: one audio fifo per codec */
FILE *logfile;
} AVOutputStream;
typedef struct AVInputStream {
int file_index;
int index;
AVStream *st;
int discard; /* true if stream data should be discarded */
int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
int64_t sample_index; /* current sample */
int64_t start; /* time when read started */
int64_t next_pts; /* synthetic pts for cases where pkt.pts
is not defined */
int64_t pts; /* current pts */
int is_start; /* is 1 at the start and after a discontinuity */
} AVInputStream;
typedef struct AVInputFile {
int eof_reached; /* true if eof reached */
int ist_index; /* index of first stream in ist_table */
int buffer_size; /* current total buffer size */
int nb_streams; /* nb streams we are aware of */
} AVInputFile;
#if HAVE_TERMIOS_H
/* init terminal so that we can grab keys */
static struct termios oldtty;
#endif
static void term_exit(void)
{
#if HAVE_TERMIOS_H
tcsetattr (0, TCSANOW, &oldtty);
#endif
}
static volatile int received_sigterm = 0;
static void
sigterm_handler(int sig)
{
received_sigterm = sig;
term_exit();
}
static void term_init(void)
{
#if HAVE_TERMIOS_H
struct termios tty;
tcgetattr (0, &tty);
oldtty = tty;
tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
|INLCR|IGNCR|ICRNL|IXON);
tty.c_oflag |= OPOST;
tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
tty.c_cflag &= ~(CSIZE|PARENB);
tty.c_cflag |= CS8;
tty.c_cc[VMIN] = 1;
tty.c_cc[VTIME] = 0;
tcsetattr (0, TCSANOW, &tty);
signal(SIGQUIT, sigterm_handler); /* Quit (POSIX). */
#endif
signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
/*
register a function to be called at normal program termination
*/
atexit(term_exit);
#if CONFIG_BEOS_NETSERVER
fcntl(0, F_SETFL, fcntl(0, F_GETFL) | O_NONBLOCK);
#endif
}
/* read a key without blocking */
static int read_key(void)
{
#if HAVE_TERMIOS_H
int n = 1;
unsigned char ch;
#if !CONFIG_BEOS_NETSERVER
struct timeval tv;
fd_set rfds;
FD_ZERO(&rfds);
FD_SET(0, &rfds);
tv.tv_sec = 0;
tv.tv_usec = 0;
n = select(1, &rfds, NULL, NULL, &tv);
#endif
if (n > 0) {
n = read(0, &ch, 1);
if (n == 1)
return ch;
return n;
}
#elif HAVE_CONIO_H
if(kbhit())
return(getch());
#endif
return -1;
}
static int decode_interrupt_cb(void)
{
return q_pressed || (q_pressed = read_key() == 'q');
}
static int av_exit(int ret)
{
int i;
/* close files */
for(i=0;i<nb_output_files;i++) {
/* maybe av_close_output_file ??? */
AVFormatContext *s = output_files[i];
int j;
if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
url_fclose(s->pb);
for(j=0;j<s->nb_streams;j++) {
av_metadata_free(&s->streams[j]->metadata);
av_free(s->streams[j]->codec);
av_free(s->streams[j]);
}
for(j=0;j<s->nb_programs;j++) {
av_metadata_free(&s->programs[j]->metadata);
}
for(j=0;j<s->nb_chapters;j++) {
av_metadata_free(&s->chapters[j]->metadata);
}
av_metadata_free(&s->metadata);
av_free(s);
}
for(i=0;i<nb_input_files;i++)
av_close_input_file(input_files[i]);
av_free(intra_matrix);
av_free(inter_matrix);
if (vstats_file)
fclose(vstats_file);
av_free(vstats_filename);
av_free(opt_names);
av_free(video_codec_name);
av_free(audio_codec_name);
av_free(subtitle_codec_name);
av_free(video_standard);
#if CONFIG_POWERPC_PERF
void powerpc_display_perf_report(void);
powerpc_display_perf_report();
#endif /* CONFIG_POWERPC_PERF */
for (i=0;i<CODEC_TYPE_NB;i++)
av_free(avcodec_opts[i]);
av_free(avformat_opts);
av_free(sws_opts);
av_free(audio_buf);
av_free(audio_out);
allocated_audio_buf_size= allocated_audio_out_size= 0;
av_free(samples);
if (received_sigterm) {
fprintf(stderr,
"Received signal %d: terminating.\n",
(int) received_sigterm);
exit (255);
}
// exit(ret); /* not all OS-es handle main() return value */
return ret;
}
static int read_ffserver_streams(AVFormatContext *s, const char *filename)
{
int i, err;
AVFormatContext *ic;
int nopts = 0;
err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
if (err < 0)
return err;
/* copy stream format */
s->nb_streams = ic->nb_streams;
for(i=0;i<ic->nb_streams;i++) {
AVStream *st;
// FIXME: a more elegant solution is needed
st = av_mallocz(sizeof(AVStream));
memcpy(st, ic->streams[i], sizeof(AVStream));
st->codec = avcodec_alloc_context();
if (!st->codec) {
print_error(filename, AVERROR(ENOMEM));
av_exit(1);
}
memcpy(st->codec, ic->streams[i]->codec, sizeof(AVCodecContext));
s->streams[i] = st;
if (st->codec->codec_type == CODEC_TYPE_AUDIO && audio_stream_copy)
st->stream_copy = 1;
else if (st->codec->codec_type == CODEC_TYPE_VIDEO && video_stream_copy)
st->stream_copy = 1;
if(!st->codec->thread_count)
st->codec->thread_count = 1;
if(st->codec->thread_count>1)
avcodec_thread_init(st->codec, st->codec->thread_count);
if(st->codec->flags & CODEC_FLAG_BITEXACT)
nopts = 1;
}
if (!nopts)
s->timestamp = av_gettime();
av_close_input_file(ic);
return 0;
}
static double
get_sync_ipts(const AVOutputStream *ost)
{
const AVInputStream *ist = ost->sync_ist;
return (double)(ist->pts - start_time)/AV_TIME_BASE;
}
static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
int ret;
while(bsfc){
AVPacket new_pkt= *pkt;
int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
&new_pkt.data, &new_pkt.size,
pkt->data, pkt->size,
pkt->flags & PKT_FLAG_KEY);
if(a>0){
av_free_packet(pkt);
new_pkt.destruct= av_destruct_packet;
} else if(a<0){
fprintf(stderr, "%s failed for stream %d, codec %s",
bsfc->filter->name, pkt->stream_index,
avctx->codec ? avctx->codec->name : "copy");
print_error("", a);
if (exit_on_error)
av_exit(1);
}
*pkt= new_pkt;
bsfc= bsfc->next;
}
ret= av_interleaved_write_frame(s, pkt);
if(ret < 0){
print_error("av_interleaved_write_frame()", ret);
av_exit(1);
}
}
#define MAX_AUDIO_PACKET_SIZE (128 * 1024)
static void do_audio_out(AVFormatContext *s,
AVOutputStream *ost,
AVInputStream *ist,
unsigned char *buf, int size)
{
uint8_t *buftmp;
int64_t audio_out_size, audio_buf_size;
int size_out, frame_bytes, ret;
AVCodecContext *enc= ost->st->codec;
AVCodecContext *dec= ist->st->codec;
int osize= av_get_bits_per_sample_format(enc->sample_fmt)/8;
int isize= av_get_bits_per_sample_format(dec->sample_fmt)/8;
const int coded_bps = av_get_bits_per_sample(enc->codec->id);
audio_buf_size= (size + isize*dec->channels - 1) / (isize*dec->channels);
audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
audio_buf_size*= osize*enc->channels;
audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
if(coded_bps > 8*osize)
audio_out_size= audio_out_size * coded_bps / (8*osize);
audio_out_size += FF_MIN_BUFFER_SIZE;
if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
fprintf(stderr, "Buffer sizes too large\n");
av_exit(1);
}
av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
if (!audio_buf || !audio_out){
fprintf(stderr, "Out of memory in do_audio_out\n");
av_exit(1);
}
if (enc->channels != dec->channels)
ost->audio_resample = 1;
if (ost->audio_resample && !ost->resample) {
if (dec->sample_fmt != SAMPLE_FMT_S16)
fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
ost->resample = av_audio_resample_init(enc->channels, dec->channels,
enc->sample_rate, dec->sample_rate,
enc->sample_fmt, dec->sample_fmt,
16, 10, 0, 0.8);
if (!ost->resample) {
fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
dec->channels, dec->sample_rate,
enc->channels, enc->sample_rate);
av_exit(1);
}
}
#define MAKE_SFMT_PAIR(a,b) ((a)+SAMPLE_FMT_NB*(b))
if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
if (ost->reformat_ctx)
av_audio_convert_free(ost->reformat_ctx);
ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
dec->sample_fmt, 1, NULL, 0);
if (!ost->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(enc->sample_fmt));
av_exit(1);
}
ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
}
if(audio_sync_method){
double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
- av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2);
double idelta= delta*ist->st->codec->sample_rate / enc->sample_rate;
int byte_delta= ((int)idelta)*2*ist->st->codec->channels;
//FIXME resample delay
if(fabs(delta) > 50){
if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
if(byte_delta < 0){
byte_delta= FFMAX(byte_delta, -size);
size += byte_delta;
buf -= byte_delta;
if(verbose > 2)
fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
if(!size)
return;
ist->is_start=0;
}else{
static uint8_t *input_tmp= NULL;
input_tmp= av_realloc(input_tmp, byte_delta + size);
if(byte_delta + size <= MAX_AUDIO_PACKET_SIZE)
ist->is_start=0;
else
byte_delta= MAX_AUDIO_PACKET_SIZE - size;
memset(input_tmp, 0, byte_delta);
memcpy(input_tmp + byte_delta, buf, size);
buf= input_tmp;
size += byte_delta;
if(verbose > 2)
fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
}
}else if(audio_sync_method>1){
int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
assert(ost->audio_resample);
if(verbose > 2)
fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
// fprintf(stderr, "drift:%f len:%d opts:%"PRId64" ipts:%"PRId64" fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2));
av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
}
}
}else
ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
- av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2); //FIXME wrong
if (ost->audio_resample) {
buftmp = audio_buf;
size_out = audio_resample(ost->resample,
(short *)buftmp, (short *)buf,
size / (ist->st->codec->channels * isize));
size_out = size_out * enc->channels * osize;
} else {
buftmp = buf;
size_out = size;
}
if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
const void *ibuf[6]= {buftmp};
void *obuf[6]= {audio_buf};
int istride[6]= {isize};
int ostride[6]= {osize};
int len= size_out/istride[0];
if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
printf("av_audio_convert() failed\n");
if (exit_on_error)
av_exit(1);
return;
}
buftmp = audio_buf;
size_out = len*osize;
}
/* now encode as many frames as possible */
if (enc->frame_size > 1) {
/* output resampled raw samples */
if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
fprintf(stderr, "av_fifo_realloc2() failed\n");
av_exit(1);
}
av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
frame_bytes = enc->frame_size * osize * enc->channels;
while (av_fifo_size(ost->fifo) >= frame_bytes) {
AVPacket pkt;
av_init_packet(&pkt);
av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
//FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
(short *)audio_buf);
if (ret < 0) {
fprintf(stderr, "Audio encoding failed\n");
av_exit(1);
}
audio_size += ret;
pkt.stream_index= ost->index;
pkt.data= audio_out;
pkt.size= ret;
if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
pkt.flags |= PKT_FLAG_KEY;
write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
ost->sync_opts += enc->frame_size;
}
} else {
AVPacket pkt;
av_init_packet(&pkt);
ost->sync_opts += size_out / (osize * enc->channels);
/* output a pcm frame */
/* determine the size of the coded buffer */
size_out /= osize;
if (coded_bps)
size_out = size_out*coded_bps/8;
if(size_out > audio_out_size){
fprintf(stderr, "Internal error, buffer size too small\n");
av_exit(1);
}
//FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
ret = avcodec_encode_audio(enc, audio_out, size_out,
(short *)buftmp);
if (ret < 0) {
fprintf(stderr, "Audio encoding failed\n");
av_exit(1);
}
audio_size += ret;
pkt.stream_index= ost->index;
pkt.data= audio_out;
pkt.size= ret;
if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
pkt.flags |= PKT_FLAG_KEY;
write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
}
}
static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
{
AVCodecContext *dec;
AVPicture *picture2;
AVPicture picture_tmp;
uint8_t *buf = 0;
dec = ist->st->codec;
/* deinterlace : must be done before any resize */
if (do_deinterlace) {
int size;
/* create temporary picture */
size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
buf = av_malloc(size);
if (!buf)
return;
picture2 = &picture_tmp;
avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
if(avpicture_deinterlace(picture2, picture,
dec->pix_fmt, dec->width, dec->height) < 0) {
/* if error, do not deinterlace */
fprintf(stderr, "Deinterlacing failed\n");
av_free(buf);
buf = NULL;
picture2 = picture;
}
} else {
picture2 = picture;
}
if (picture != picture2)
*picture = *picture2;
*bufp = buf;
}
/* we begin to correct av delay at this threshold */
#define AV_DELAY_MAX 0.100
static void do_subtitle_out(AVFormatContext *s,
AVOutputStream *ost,
AVInputStream *ist,
AVSubtitle *sub,
int64_t pts)
{
static uint8_t *subtitle_out = NULL;
int subtitle_out_max_size = 1024 * 1024;
int subtitle_out_size, nb, i;
AVCodecContext *enc;
AVPacket pkt;
if (pts == AV_NOPTS_VALUE) {
fprintf(stderr, "Subtitle packets must have a pts\n");
if (exit_on_error)
av_exit(1);
return;
}
enc = ost->st->codec;
if (!subtitle_out) {
subtitle_out = av_malloc(subtitle_out_max_size);
}
/* Note: DVB subtitle need one packet to draw them and one other
packet to clear them */
/* XXX: signal it in the codec context ? */
if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
nb = 2;
else
nb = 1;
for(i = 0; i < nb; i++) {
sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
// start_display_time is required to be 0
sub->pts += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
sub->end_display_time -= sub->start_display_time;
sub->start_display_time = 0;
subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
subtitle_out_max_size, sub);
if (subtitle_out_size < 0) {
fprintf(stderr, "Subtitle encoding failed\n");
av_exit(1);
}
av_init_packet(&pkt);
pkt.stream_index = ost->index;
pkt.data = subtitle_out;
pkt.size = subtitle_out_size;
pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
/* XXX: the pts correction is handled here. Maybe handling
it in the codec would be better */
if (i == 0)
pkt.pts += 90 * sub->start_display_time;
else
pkt.pts += 90 * sub->end_display_time;
}
write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
}
}
static int bit_buffer_size= 1024*256;
static uint8_t *bit_buffer= NULL;
static void do_video_out(AVFormatContext *s,
AVOutputStream *ost,
AVInputStream *ist,
AVFrame *in_picture,
int *frame_size)
{
int nb_frames, i, ret;
int64_t topBand, bottomBand, leftBand, rightBand;
AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
AVFrame picture_crop_temp, picture_pad_temp;
AVCodecContext *enc, *dec;
avcodec_get_frame_defaults(&picture_crop_temp);
avcodec_get_frame_defaults(&picture_pad_temp);
enc = ost->st->codec;
dec = ist->st->codec;
/* by default, we output a single frame */
nb_frames = 1;
*frame_size = 0;
if(video_sync_method){
double vdelta;
vdelta = get_sync_ipts(ost) / av_q2d(enc->time_base) - ost->sync_opts;
//FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
if (vdelta < -1.1)
nb_frames = 0;
else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
if(vdelta<=-0.6){
nb_frames=0;
}else if(vdelta>0.6)
ost->sync_opts= lrintf(get_sync_ipts(ost) / av_q2d(enc->time_base));
}else if (vdelta > 1.1)
nb_frames = lrintf(vdelta);
//fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, get_sync_ipts(ost), nb_frames);
if (nb_frames == 0){
++nb_frames_drop;
if (verbose>2)
fprintf(stderr, "*** drop!\n");
}else if (nb_frames > 1) {
nb_frames_dup += nb_frames - 1;
if (verbose>2)
fprintf(stderr, "*** %d dup!\n", nb_frames-1);
}
}else
ost->sync_opts= lrintf(get_sync_ipts(ost) / av_q2d(enc->time_base));
nb_frames= FFMIN(nb_frames, max_frames[CODEC_TYPE_VIDEO] - ost->frame_number);
if (nb_frames <= 0)
return;
if (ost->video_crop) {
if (av_picture_crop((AVPicture *)&picture_crop_temp, (AVPicture *)in_picture, dec->pix_fmt, ost->topBand, ost->leftBand) < 0) {
fprintf(stderr, "error cropping picture\n");
if (exit_on_error)
av_exit(1);
return;
}
formatted_picture = &picture_crop_temp;
} else {
formatted_picture = in_picture;
}
final_picture = formatted_picture;
padding_src = formatted_picture;
resampling_dst = &ost->pict_tmp;
if (ost->video_pad) {
final_picture = &ost->pict_tmp;
if (ost->video_resample) {
if (av_picture_crop((AVPicture *)&picture_pad_temp, (AVPicture *)final_picture, enc->pix_fmt, ost->padtop, ost->padleft) < 0) {
fprintf(stderr, "error padding picture\n");
if (exit_on_error)
av_exit(1);
return;
}
resampling_dst = &picture_pad_temp;
}
}
if( (ost->resample_height != (ist->st->codec->height - (ost->topBand + ost->bottomBand)))
|| (ost->resample_width != (ist->st->codec->width - (ost->leftBand + ost->rightBand)))
|| (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
fprintf(stderr,"Input Stream #%d.%d frame size changed to %dx%d, %s\n", ist->file_index, ist->index, ist->st->codec->width, ist->st->codec->height,avcodec_get_pix_fmt_name(ist->st->codec->pix_fmt));
if(!ost->video_resample)
av_exit(1);
}
if (ost->video_resample) {
padding_src = NULL;
final_picture = &ost->pict_tmp;
if( (ost->resample_height != (ist->st->codec->height - (ost->topBand + ost->bottomBand)))
|| (ost->resample_width != (ist->st->codec->width - (ost->leftBand + ost->rightBand)))
|| (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
/* keep bands proportional to the frame size */
topBand = ((int64_t)ist->st->codec->height * ost->original_topBand / ost->original_height) & ~1;
bottomBand = ((int64_t)ist->st->codec->height * ost->original_bottomBand / ost->original_height) & ~1;
leftBand = ((int64_t)ist->st->codec->width * ost->original_leftBand / ost->original_width) & ~1;
rightBand = ((int64_t)ist->st->codec->width * ost->original_rightBand / ost->original_width) & ~1;
/* sanity check to ensure no bad band sizes sneak in */
assert(topBand <= INT_MAX && topBand >= 0);
assert(bottomBand <= INT_MAX && bottomBand >= 0);
assert(leftBand <= INT_MAX && leftBand >= 0);
assert(rightBand <= INT_MAX && rightBand >= 0);
ost->topBand = topBand;
ost->bottomBand = bottomBand;
ost->leftBand = leftBand;
ost->rightBand = rightBand;
ost->resample_height = ist->st->codec->height - (ost->topBand + ost->bottomBand);
ost->resample_width = ist->st->codec->width - (ost->leftBand + ost->rightBand);
ost->resample_pix_fmt= ist->st->codec->pix_fmt;
/* initialize a new scaler context */
sws_freeContext(ost->img_resample_ctx);
sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
ost->img_resample_ctx = sws_getContext(