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-rw-r--r--libhb/mcdeint.c234
1 files changed, 234 insertions, 0 deletions
diff --git a/libhb/mcdeint.c b/libhb/mcdeint.c
new file mode 100644
index 000000000..1c7138bd7
--- /dev/null
+++ b/libhb/mcdeint.c
@@ -0,0 +1,234 @@
+/*
+ Copyright (C) 2006 Michael Niedermayer <[email protected]>
+
+ 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 width,
+ int height )
+{
+ pv->mcdeint_mode = mode;
+ pv->mcdeint_qp = qp;
+
+ /* Allocate mcdeint specific buffers */
+ if( pv->mcdeint_mode >= 0 )
+ {
+ avcodec_init();
+ avcodec_register_all();
+
+ AVCodec * enc = avcodec_find_encoder( CODEC_ID_SNOW );
+
+ int i;
+ for (i = 0; i < 3; i++ )
+ {
+ AVCodecContext * avctx_enc;
+
+ avctx_enc = pv->mcdeint_avctx_enc = avcodec_alloc_context();
+
+ 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_YUV420P;
+ 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->flags2 = CODEC_FLAG2_MEMC_ONLY;
+ 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, 0);
+ }
+
+ pv->mcdeint_frame = avcodec_alloc_frame();
+ pv->mcdeint_outbuf_size = width * height * 10;
+ pv->mcdeint_outbuf = malloc( pv->mcdeint_outbuf_size );
+ }
+
+}
+
+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 );
+ }
+ if( pv->mcdeint_outbuf )
+ {
+ free( pv->mcdeint_outbuf );
+ }
+ }
+}
+
+void mcdeint_filter( uint8_t ** dst,
+ uint8_t ** src,
+ int parity,
+ int * width,
+ int * height,
+ mcdeint_private_t * pv )
+{
+ int x, y, i;
+ int out_size;
+
+#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[i];
+ pv->mcdeint_frame->linesize[i] = width[i];
+ }
+ 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;
+
+ out_size = avcodec_encode_video( pv->mcdeint_avctx_enc,
+ pv->mcdeint_outbuf,
+ pv->mcdeint_outbuf_size,
+ pv->mcdeint_frame );
+
+ pv->mcdeint_frame_dec = pv->mcdeint_avctx_enc->coded_frame;
+
+ for( i = 0; i < 3; i++ )
+ {
+ int w = width[i];
+ int h = height[i];
+ int fils = pv->mcdeint_frame_dec->linesize[i];
+ int srcs = width[i];
+
+ for( y = 0; y < h; y++ )
+ {
+ if( (y ^ parity) & 1 )
+ {
+ 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[i][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[i][x + y*w] =
+ temp > 255U ? ~(temp>>31) : temp;
+ }
+ else
+ {
+ dst[i][x + y*w] =
+ pv->mcdeint_frame_dec->data[i][x + y*fils];
+ }
+ }
+ }
+ }
+
+ for( y = 0; y < h; y++ )
+ {
+ if( !((y ^ parity) & 1) )
+ {
+ for( x = 0; x < w; x++ )
+ {
+ pv->mcdeint_frame_dec->data[i][x + y*fils] =
+ dst[i][x + y*w]= src[i][x + y*srcs];
+ }
+ }
+ }
+ }
+
+#ifdef SUPPRESS_AV_LOG
+ /* TODO: restore previous log level */
+ av_log_set_level(loglevel);
+#endif
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-28 01:23:09 +0000