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/* $Id: muxmp4.c,v 1.24 2005/11/04 13:09:41 titer Exp $
This file is part of the HandBrake source code.
Homepage: <http://handbrake.m0k.org/>.
It may be used under the terms of the GNU General Public License. */
#include <ffmpeg/avformat.h>
#include "hb.h"
int64_t ff_gcd(int64_t a, int64_t b);
static inline int ff_get_fourcc(const char *s)
{
return (s[0]) + (s[1]<<8) + (s[2]<<16) + (s[3]<<24);
}
struct hb_mux_object_s
{
HB_MUX_COMMON;
hb_job_t * job;
AVFormatContext * format;
};
struct hb_mux_data_s
{
int track;
};
/**********************************************************************
* MP4Init
**********************************************************************
* Allocates hb_mux_data_t structures, create file and write headers
*********************************************************************/
static int MP4Init( hb_mux_object_t * m )
{
hb_job_t * job = m->job;
hb_title_t * title = job->title;
hb_audio_t * audio;
int i;
AVFormatContext * oc;
AVStream *st;
AVFormatParameters params;
register_protocol(&file_protocol);
movenc_init();
oc = av_alloc_format_context();
if( job->mux & HB_MUX_PSP )
{
oc->oformat = guess_format( "psp", NULL, NULL );
}
else
{
oc->oformat = guess_format( "mp4", NULL, NULL );
}
if( !oc->oformat )
{
hb_log( "guess_format failed" );
return 1;
}
snprintf( oc->filename, sizeof( oc->filename ),
"%s", job->file );
st = av_new_stream( oc, oc->nb_streams );
if( !st )
{
hb_log( "av_new_stream failed" );
return 1;
}
st->stream_copy = 1;
st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
st->codec->codec_type = CODEC_TYPE_VIDEO;
st->codec->codec_id = ( job->vcodec == HB_VCODEC_X264 ) ?
CODEC_ID_H264 : CODEC_ID_MPEG4;
st->codec->extradata= job->config.mpeg4.bytes;
st->codec->extradata_size= job->config.mpeg4.length;
st->codec->bit_rate = 1000 * job->vbitrate;
i = ff_gcd( job->vrate_base, job->vrate );
st->codec->time_base = (AVRational){ job->vrate_base / i, job->vrate / i };
st->codec->pix_fmt = PIX_FMT_YUV420P;
st->codec->width = job->width;
st->codec->height = job->height;
st->codec->has_b_frames = 0;
job->mux_data = malloc( sizeof( hb_mux_data_t ) );
job->mux_data->track = 0;
for( i = 0; i < hb_list_count( title->list_audio ); i++ )
{
audio = hb_list_item( title->list_audio, i );
audio->mux_data = malloc( sizeof( hb_mux_data_t ) );
audio->mux_data->track = i + 1;
st = av_new_stream( oc, oc->nb_streams );
if( !st )
{
hb_log( "av_new_stream failed" );
return 1;
}
st->stream_copy = 1;
st->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
st->codec->codec_type = CODEC_TYPE_AUDIO;
st->codec->codec_id = CODEC_ID_AAC;
st->codec->bit_rate = 1000 * job->abitrate;
st->codec->extradata= audio->config.aac.bytes;
st->codec->extradata_size= audio->config.aac.length;
st->codec->time_base = (AVRational){ 1, job->arate };
st->codec->channels = 2;
st->codec->sample_rate = job->arate;
st->codec->frame_size = 1024;
st->codec->block_align = 0;
}
oc->timestamp = 0;
if( url_fopen( &oc->pb, job->file, URL_WRONLY ) < 0 )
{
hb_log( "url_fopen failed (%s)", job->file );
return 1;
}
memset( ¶ms, 0, sizeof( params ) );
if( av_set_parameters( oc, ¶ms ) < 0 )
{
hb_log( "av_set_parameters failed" );
return 1;
}
oc->packet_size= 0;
oc->mux_rate= 0;
oc->preload= (int)(0.5*AV_TIME_BASE);
oc->max_delay= (int)(0.7*AV_TIME_BASE);
oc->loop_output = AVFMT_NOOUTPUTLOOP;
if( av_write_header( oc ) < 0 )
{
hb_log( "av_write_header failed" );
return 1;
}
m->format = oc;
return 0;
}
static int MP4Mux( hb_mux_object_t * m, hb_mux_data_t * mux_data,
hb_buffer_t * buf )
{
AVPacket pkt;
av_init_packet(&pkt);
pkt.stream_index = mux_data->track;
pkt.data = buf->data;
pkt.size = buf->size;
pkt.pts = buf->start;
if( buf->key )
{
pkt.flags |= PKT_FLAG_KEY;
}
av_interleaved_write_frame( m->format, &pkt );
return 0;
}
static int MP4End( hb_mux_object_t * m )
{
av_write_trailer( m->format );
url_fclose( &m->format->pb );
av_free( m->format );
return 0;
}
hb_mux_object_t * hb_mux_mp4_init( hb_job_t * job )
{
hb_mux_object_t * m = calloc( sizeof( hb_mux_object_t ), 1 );
m->init = MP4Init;
m->mux = MP4Mux;
m->end = MP4End;
m->job = job;
return m;
}
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