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/* $Id: encxvid.c,v 1.10 2005/03/09 23:28:39 titer Exp $
This file is part of the HandBrake source code.
Homepage: <http://handbrake.fr/>.
It may be used under the terms of the GNU General Public License. */
#include "hb.h"
#include "xvid.h"
int encxvidInit( hb_work_object_t *, hb_job_t * );
int encxvidWork( hb_work_object_t *, hb_buffer_t **, hb_buffer_t ** );
void encxvidClose( hb_work_object_t * );
hb_work_object_t hb_encxvid =
{
WORK_ENCXVID,
"MPEG-4 encoder (libxvidcore)",
encxvidInit,
encxvidWork,
encxvidClose
};
struct hb_work_private_s
{
hb_job_t * job;
void * xvid;
char filename[1024];
int quant;
int configDone;
};
int encxvidInit( hb_work_object_t * w, hb_job_t * job )
{
xvid_gbl_init_t xvid_gbl_init;
xvid_enc_create_t create;
xvid_plugin_single_t single;
xvid_plugin_2pass1_t rc2pass1;
xvid_plugin_2pass2_t rc2pass2;
xvid_enc_plugin_t plugins[1];
hb_work_private_t * pv = calloc( 1, sizeof( hb_work_private_t ) );
w->private_data = pv;
pv->job = job;
memset( pv->filename, 0, 1024 );
hb_get_tempory_filename( job->h, pv->filename, "xvid.log" );
memset( &xvid_gbl_init, 0, sizeof( xvid_gbl_init ) );
xvid_gbl_init.version = XVID_VERSION;
xvid_global( NULL, XVID_GBL_INIT, &xvid_gbl_init, NULL );
memset( &create, 0, sizeof( create ) );
create.version = XVID_VERSION;
create.width = job->width;
create.height = job->height;
create.zones = NULL;
create.num_zones = 0;
switch( job->pass )
{
case 0:
memset( &single, 0, sizeof( single ) );
single.version = XVID_VERSION;
if( job->vquality < 0.0 || job->vquality > 1.0 )
{
/* Rate control */
single.bitrate = 1000 * job->vbitrate;
pv->quant = 0;
}
else
{
/* Constant quantizer */
pv->quant = 31 - job->vquality * 30;
hb_log( "encxvid: encoding at constant quantizer %d",
pv->quant );
}
plugins[0].func = xvid_plugin_single;
plugins[0].param = &single;
break;
case 1:
memset( &rc2pass1, 0, sizeof( rc2pass1 ) );
rc2pass1.version = XVID_VERSION;
rc2pass1.filename = pv->filename;
plugins[0].func = xvid_plugin_2pass1;
plugins[0].param = &rc2pass1;
break;
case 2:
memset( &rc2pass2, 0, sizeof( rc2pass2 ) );
rc2pass2.version = XVID_VERSION;
rc2pass2.filename = pv->filename;
rc2pass2.bitrate = 1000 * job->vbitrate;
plugins[0].func = xvid_plugin_2pass2;
plugins[0].param = &rc2pass2;
break;
}
create.plugins = plugins;
create.num_plugins = 1;
create.num_threads = 0;
create.fincr = job->vrate_base;
create.fbase = job->vrate;
create.max_key_interval = 10 * job->vrate / job->vrate_base;
create.max_bframes = 0;
create.bquant_ratio = 150;
create.bquant_offset = 100;
create.frame_drop_ratio = 0;
create.global = 0;
xvid_encore( NULL, XVID_ENC_CREATE, &create, NULL );
pv->xvid = create.handle;
return 0;
}
/***********************************************************************
* Close
***********************************************************************
*
**********************************************************************/
void encxvidClose( hb_work_object_t * w )
{
hb_work_private_t * pv = w->private_data;
if( pv->xvid )
{
hb_log( "encxvid: closing libxvidcore" );
xvid_encore( pv->xvid, XVID_ENC_DESTROY, NULL, NULL);
}
free( pv );
w->private_data = NULL;
}
/***********************************************************************
* Work
***********************************************************************
*
**********************************************************************/
int encxvidWork( hb_work_object_t * w, hb_buffer_t ** buf_in,
hb_buffer_t ** buf_out )
{
hb_work_private_t * pv = w->private_data;
hb_job_t * job = pv->job;
xvid_enc_frame_t frame;
hb_buffer_t * in = *buf_in, * buf;
if ( in->size <= 0 )
{
/* EOF on input - send it downstream & say we're done */
*buf_out = in;
*buf_in = NULL;
return HB_WORK_DONE;
}
/* Should be way too large */
buf = hb_buffer_init( 3 * job->width * job->height / 2 );
buf->start = in->start;
buf->stop = in->stop;
memset( &frame, 0, sizeof( frame ) );
frame.version = XVID_VERSION;
frame.bitstream = buf->data;
frame.length = -1;
frame.input.plane[0] = in->data;
frame.input.csp = XVID_CSP_I420;
frame.input.stride[0] = job->width;
frame.vol_flags = 0;
frame.vop_flags = XVID_VOP_HALFPEL | XVID_VOP_INTER4V |
XVID_VOP_TRELLISQUANT | XVID_VOP_HQACPRED;
if( job->pixel_ratio )
{
frame.par = XVID_PAR_EXT;
frame.par_width = job->pixel_aspect_width;
frame.par_height = job->pixel_aspect_height;
}
if( job->grayscale )
{
frame.vop_flags |= XVID_VOP_GREYSCALE;
}
frame.type = XVID_TYPE_AUTO;
frame.quant = pv->quant;
frame.motion = XVID_ME_ADVANCEDDIAMOND16 | XVID_ME_HALFPELREFINE16 |
XVID_ME_EXTSEARCH16 | XVID_ME_ADVANCEDDIAMOND8 |
XVID_ME_HALFPELREFINE8 | XVID_ME_EXTSEARCH8 |
XVID_ME_CHROMA_PVOP | XVID_ME_CHROMA_BVOP;
frame.quant_intra_matrix = NULL;
frame.quant_inter_matrix = NULL;
buf->size = xvid_encore( pv->xvid, XVID_ENC_ENCODE, &frame, NULL );
buf->frametype = ( frame.out_flags & XVID_KEYFRAME ) ? HB_FRAME_KEY : HB_FRAME_REF;
if( !pv->configDone )
{
int vol_start, vop_start;
for( vol_start = 0; ; vol_start++ )
{
if( buf->data[vol_start] == 0x0 &&
buf->data[vol_start+1] == 0x0 &&
buf->data[vol_start+2] == 0x1 &&
buf->data[vol_start+3] == 0x20 )
{
break;
}
}
for( vop_start = vol_start + 4; ; vop_start++ )
{
if( buf->data[vop_start] == 0x0 &&
buf->data[vop_start+1] == 0x0 &&
buf->data[vop_start+2] == 0x1 &&
buf->data[vop_start+3] == 0xB6 )
{
break;
}
}
hb_log( "encxvid: VOL size is %d bytes", vop_start - vol_start );
job->config.mpeg4.length = vop_start - vol_start;
memcpy( job->config.mpeg4.bytes, &buf->data[vol_start],
job->config.mpeg4.length );
pv->configDone = 1;
}
*buf_out = buf;
return HB_WORK_OK;
}
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