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/* 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 "theora/theora.h"
int enctheoraInit( hb_work_object_t *, hb_job_t * );
int enctheoraWork( hb_work_object_t *, hb_buffer_t **, hb_buffer_t ** );
void enctheoraClose( hb_work_object_t * );
hb_work_object_t hb_enctheora =
{
WORK_ENCTHEORA,
"Theora encoder (libtheora)",
enctheoraInit,
enctheoraWork,
enctheoraClose
};
struct hb_work_private_s
{
hb_job_t * job;
theora_state theora;
};
int enctheoraInit( hb_work_object_t * w, hb_job_t * job )
{
hb_work_private_t * pv = calloc( 1, sizeof( hb_work_private_t ) );
w->private_data = pv;
pv->job = job;
theora_info ti;
theora_comment tc;
ogg_packet op;
theora_info_init( &ti );
ti.width = ti.frame_width = job->width;
ti.height = ti.frame_height = job->height;
ti.offset_x = ti.offset_y = 0;
ti.fps_numerator = job->vrate;
ti.fps_denominator = job->vrate_base;
if (job->pixel_ratio)
{
ti.aspect_numerator = job->pixel_aspect_width;
ti.aspect_denominator = job->pixel_aspect_height;
}
else
{
ti.aspect_numerator = ti.aspect_denominator = 1;
}
ti.colorspace = OC_CS_UNSPECIFIED;
ti.pixelformat = OC_PF_420;
ti.keyframe_auto_p = 1;
ti.keyframe_frequency = (job->vrate / job->vrate_base) + 1;
ti.keyframe_frequency_force = (10 * job->vrate / job->vrate_base) + 1;
/* From encoder_example.c */
ti.quick_p = 1;
ti.dropframes_p = 0;
ti.keyframe_auto_threshold = 80;
ti.keyframe_mindistance = 8;
ti.noise_sensitivity = 1;
ti.sharpness = 0;
if (job->vquality < 0.0 || job->vquality > 1.0)
{
ti.target_bitrate = job->vbitrate * 1000;
ti.keyframe_data_target_bitrate = job->vbitrate * 1000 * 1.5;
ti.quality = 0;
}
else
{
ti.target_bitrate = 0;
ti.quality = 63 * job->vquality;
}
theora_encode_init( &pv->theora, &ti );
theora_info_clear( &ti );
theora_encode_header( &pv->theora, &op );
memcpy(w->config->theora.headers[0], &op, sizeof(op));
memcpy(w->config->theora.headers[0] + sizeof(op), op.packet, op.bytes );
theora_comment_init(&tc);
theora_encode_comment(&tc,&op);
memcpy(w->config->theora.headers[1], &op, sizeof(op));
memcpy(w->config->theora.headers[1] + sizeof(op), op.packet, op.bytes );
free(op.packet);
theora_encode_tables(&pv->theora, &op);
memcpy(w->config->theora.headers[2], &op, sizeof(op));
memcpy(w->config->theora.headers[2] + sizeof(op), op.packet, op.bytes );
return 0;
}
/***********************************************************************
* Close
***********************************************************************
*
**********************************************************************/
void enctheoraClose( hb_work_object_t * w )
{
hb_work_private_t * pv = w->private_data;
/* TODO: Free alloc'd */
free( pv );
w->private_data = NULL;
}
/***********************************************************************
* Work
***********************************************************************
*
**********************************************************************/
int enctheoraWork( 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;
hb_buffer_t * in = *buf_in, * buf;
yuv_buffer yuv;
ogg_packet op;
if ( in->size <= 0 )
{
// EOF on input - send it downstream & say we're done.
// XXX may need to flush packets via a call to
// theora_encode_packetout(&pv->theora, 1, &op);
// but we don't have a timestamp to put on those packets so we
// drop them for now.
*buf_out = in;
*buf_in = NULL;
return HB_WORK_DONE;
}
memset(&op, 0, sizeof(op));
memset(&yuv, 0, sizeof(yuv));
yuv.y_width = job->width;
yuv.y_height = job->height;
yuv.y_stride = job->width;
yuv.uv_width = (job->width + 1) / 2;
yuv.uv_height = (job->height + 1) / 2;
yuv.uv_stride = yuv.uv_width;
yuv.y = in->data;
yuv.u = in->data + job->width * job->height;
yuv.v = in->data + ( job->width * job->height ) + ( yuv.uv_width * yuv.uv_height );
theora_encode_YUVin(&pv->theora, &yuv);
theora_encode_packetout(&pv->theora, 0, &op);
buf = hb_buffer_init( op.bytes + sizeof(op) );
memcpy(buf->data, &op, sizeof(op));
memcpy(buf->data + sizeof(op), op.packet, op.bytes);
buf->frametype = ( theora_packet_iskeyframe(&op) ) ? HB_FRAME_KEY : HB_FRAME_REF;
buf->start = in->start;
buf->stop = in->stop;
*buf_out = buf;
return HB_WORK_OK;
}
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