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/* $Id: encfaac.c,v 1.13 2005/03/03 17:21:57 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 "hb.h"
#include "faac.h"
struct hb_work_object_s
{
HB_WORK_COMMON;
hb_job_t * job;
hb_audio_t * audio;
faacEncHandle * faac;
unsigned long input_samples;
unsigned long output_bytes;
uint8_t * buf;
hb_list_t * list;
int64_t pts;
};
/***********************************************************************
* Local prototypes
**********************************************************************/
static void Close( hb_work_object_t ** _w );
static int Work( hb_work_object_t * w, hb_buffer_t ** buf_in,
hb_buffer_t ** buf_out );
/***********************************************************************
* hb_work_encfaac_init
***********************************************************************
*
**********************************************************************/
hb_work_object_t * hb_work_encfaac_init( hb_job_t * job, hb_audio_t * audio )
{
hb_work_object_t * w = calloc( sizeof( hb_work_object_t ), 1 );
faacEncConfigurationPtr cfg;
w->name = strdup( "AAC encoder (libfaac)" );
w->work = Work;
w->close = Close;
w->job = job;
w->audio = audio;
w->faac = faacEncOpen( job->arate, 2, &w->input_samples,
&w->output_bytes );
w->buf = malloc( w->input_samples * sizeof( float ) );
cfg = faacEncGetCurrentConfiguration( w->faac );
cfg->mpegVersion = MPEG4;
cfg->aacObjectType = LOW;
cfg->allowMidside = 1;
cfg->useLfe = 0;
cfg->useTns = 0;
cfg->bitRate = job->abitrate * 500; /* Per channel */
cfg->bandWidth = 0;
cfg->outputFormat = 0;
cfg->inputFormat = FAAC_INPUT_FLOAT;
if( !faacEncSetConfiguration( w->faac, cfg ) )
{
hb_log( "faacEncSetConfiguration failed" );
}
if( faacEncGetDecoderSpecificInfo( w->faac, &audio->config.faac.decinfo,
&audio->config.faac.size ) < 0 )
{
hb_log( "faacEncGetDecoderSpecificInfo failed" );
}
w->list = hb_list_init();
w->pts = -1;
return w;
}
/***********************************************************************
* Close
***********************************************************************
*
**********************************************************************/
static void Close( hb_work_object_t ** _w )
{
hb_work_object_t * w = *_w;
faacEncClose( w->faac );
free( w->buf );
hb_list_empty( &w->list );
free( w->audio->config.faac.decinfo );
free( w->name );
free( w );
*_w = NULL;
}
/***********************************************************************
* Encode
***********************************************************************
*
**********************************************************************/
static hb_buffer_t * Encode( hb_work_object_t * w )
{
hb_buffer_t * buf;
uint64_t pts;
int pos;
if( hb_list_bytes( w->list ) < w->input_samples * sizeof( float ) )
{
/* Need more data */
return NULL;
}
hb_list_getbytes( w->list, w->buf, w->input_samples * sizeof( float ),
&pts, &pos );
buf = hb_buffer_init( w->output_bytes );
buf->start = pts + 90000 * pos / 2 / sizeof( float ) / w->job->arate;
buf->stop = buf->start + 90000 * w->input_samples / w->job->arate / 2;
buf->size = faacEncEncode( w->faac, (int32_t *) w->buf,
w->input_samples, buf->data, w->output_bytes );
buf->key = 1;
if( !buf->size )
{
/* Encoding was successful but we got no data. Try to encode
more */
hb_buffer_close( &buf );
return Encode( w );
}
else if( buf->size < 0 )
{
hb_log( "faacEncEncode failed" );
hb_buffer_close( &buf );
return NULL;
}
return buf;
}
/***********************************************************************
* Work
***********************************************************************
*
**********************************************************************/
static int Work( hb_work_object_t * w, hb_buffer_t ** buf_in,
hb_buffer_t ** buf_out )
{
hb_buffer_t * buf;
hb_list_add( w->list, *buf_in );
*buf_in = NULL;
*buf_out = buf = Encode( w );
while( buf )
{
buf->next = Encode( w );
buf = buf->next;
}
return HB_WORK_OK;
}
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