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/*
Copyright (C) 2006 Michael Niedermayer <michaelni@gmx.at>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "hb.h"
#include "hbffmpeg.h"
#include "mpeg2dec/mpeg2.h"
#include "mcdeint.h"
#define SUPPRESS_AV_LOG
#define ABS(a) ((a) > 0 ? (a) : (-(a)))
void mcdeint_init( mcdeint_private_t * pv,
int mode,
int qp,
int pix_fmt,
int width,
int height )
{
pv->mcdeint_mode = mode;
pv->mcdeint_qp = qp;
/* Allocate mcdeint specific buffers */
if( pv->mcdeint_mode >= 0 )
{
avcodec_register_all();
AVCodec * enc = avcodec_find_encoder( CODEC_ID_SNOW );
// Snow ME_ITER will crash if width & height are not 16 pixel
// aligned (or 8 pixel if CODEC_FLAG_4MV is set).
// Fortunately, our input buffers have padding
width = (width + 15) & ~0xf;
height = (height + 15) & ~0xf;
AVCodecContext * avctx_enc;
avctx_enc = pv->mcdeint_avctx_enc = avcodec_alloc_context3( enc );
avctx_enc->width = width;
avctx_enc->height = height;
avctx_enc->time_base = (AVRational){1,25}; // meaningless
avctx_enc->gop_size = 300;
avctx_enc->max_b_frames = 0;
avctx_enc->pix_fmt = pix_fmt;
avctx_enc->flags = CODEC_FLAG_QSCALE | CODEC_FLAG_LOW_DELAY;
avctx_enc->strict_std_compliance = FF_COMPLIANCE_EXPERIMENTAL;
avctx_enc->global_quality = 1;
avctx_enc->me_cmp = FF_CMP_SAD; //SSE;
avctx_enc->me_sub_cmp = FF_CMP_SAD; //SSE;
avctx_enc->mb_cmp = FF_CMP_SSE;
switch( pv->mcdeint_mode )
{
case 3:
avctx_enc->refs = 3;
case 2:
avctx_enc->me_method = ME_ITER;
case 1:
avctx_enc->flags |= CODEC_FLAG_4MV;
avctx_enc->dia_size =2;
case 0:
avctx_enc->flags |= CODEC_FLAG_QPEL;
}
hb_avcodec_open(avctx_enc, enc, NULL, 0);
pv->mcdeint_frame = avcodec_alloc_frame();
av_new_packet( &pv->mcdeint_pkt, width * height * 10 );
}
}
void mcdeint_close( mcdeint_private_t * pv )
{
/* Cleanup mcdeint specific buffers */
if( pv->mcdeint_mode >= 0 )
{
if( pv->mcdeint_avctx_enc )
{
hb_avcodec_close( pv->mcdeint_avctx_enc );
av_freep( &pv->mcdeint_avctx_enc );
}
av_free_packet( &pv->mcdeint_pkt );
}
}
void mcdeint_filter( hb_buffer_t * dst_buf,
hb_buffer_t * src_buf,
int parity,
mcdeint_private_t * pv )
{
int x, y, i;
#ifdef SUPPRESS_AV_LOG
/* TODO: temporarily change log level to suppress obnoxious debug output */
int loglevel = av_log_get_level();
av_log_set_level( AV_LOG_QUIET );
#endif
for( i=0; i<3; i++ )
{
pv->mcdeint_frame->data[i] = src_buf->plane[i].data;
pv->mcdeint_frame->linesize[i] = src_buf->plane[i].stride;
}
pv->mcdeint_avctx_enc->me_cmp = FF_CMP_SAD;
pv->mcdeint_avctx_enc->me_sub_cmp = FF_CMP_SAD;
pv->mcdeint_frame->quality = pv->mcdeint_qp * FF_QP2LAMBDA;
int got_packet;
avcodec_encode_video2( pv->mcdeint_avctx_enc,
&pv->mcdeint_pkt, pv->mcdeint_frame, &got_packet );
pv->mcdeint_frame_dec = pv->mcdeint_avctx_enc->coded_frame;
for( i = 0; i < 3; i++ )
{
uint8_t * dst = dst_buf->plane[i].data;
uint8_t * src = src_buf->plane[i].data;
int w = src_buf->plane[i].stride;
int h = src_buf->plane[i].height;
int fils = pv->mcdeint_frame_dec->linesize[i];
int srcs = src_buf->plane[i].stride;
for (y = parity; y < h; y += 2)
{
for( x = 0; x < w; x++ )
{
if( (x-1)+(y-1)*w >= 0 && (x+1)+(y+1)*w < w*h )
{
uint8_t * filp =
&pv->mcdeint_frame_dec->data[i][x + y * fils];
uint8_t * srcp = &src[x + y * srcs];
int diff0 = filp[-fils] - srcp[-srcs];
int diff1 = filp[+fils] - srcp[+srcs];
int spatial_score;
spatial_score =
ABS(srcp[-srcs-1] - srcp[+srcs-1]) +
ABS(srcp[-srcs ] - srcp[+srcs ]) +
ABS(srcp[-srcs+1] - srcp[+srcs+1]) - 1;
int temp = filp[0];
#define MCDEINT_CHECK(j)\
{ int score = ABS(srcp[-srcs-1+j] - srcp[+srcs-1-j])\
+ ABS(srcp[-srcs +j] - srcp[+srcs -j])\
+ ABS(srcp[-srcs+1+j] - srcp[+srcs+1-j]);\
if( score < spatial_score ) {\
spatial_score = score;\
diff0 = filp[-fils+j] - srcp[-srcs+j];\
diff1 = filp[+fils-j] - srcp[+srcs-j];
if( x >= 2 && x <= w - 3 )
{
MCDEINT_CHECK(-1)
if( x >= 3 && x <= w - 4 )
{
MCDEINT_CHECK(-2) }} }}
}
}
if( x >= 2 && x <= w - 3 )
{
MCDEINT_CHECK(1)
if( x >= 3 && x <= w - 4 )
{
MCDEINT_CHECK(2) }} }}
}
}
if(diff0 + diff1 > 0)
{
temp -= (diff0 + diff1 -
ABS( ABS(diff0) - ABS(diff1) ) / 2) / 2;
}
else
{
temp -= (diff0 + diff1 +
ABS( ABS(diff0) - ABS(diff1) ) / 2) / 2;
}
filp[0] = dst[x + y*w] =
temp > 255U ? ~(temp>>31) : temp;
}
else
{
dst[x + y*w] =
pv->mcdeint_frame_dec->data[i][x + y*fils];
}
}
}
for( y = !parity; y < h; y += 2 )
{
memcpy(&pv->mcdeint_frame_dec->data[i][y * fils],
&src[y * srcs], w);
memcpy(&dst[y * w], &src[y * srcs], w);
}
}
#ifdef SUPPRESS_AV_LOG
/* TODO: restore previous log level */
av_log_set_level(loglevel);
#endif
}
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