/* * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder * Copyright (c) 2003-2011 Michael Niedermayer <michaelni@gmx.at> * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * H.264 / AVC / MPEG4 part10 DSP functions. * @author Michael Niedermayer <michaelni@gmx.at> */ #include "bit_depth_template.c" #define op_scale1(x) block[x] = av_clip_pixel( (block[x]*weight + offset) >> log2_denom ) #define op_scale2(x) dst[x] = av_clip_pixel( (src[x]*weights + dst[x]*weightd + offset) >> (log2_denom+1)) #define H264_WEIGHT(W) \ static void FUNCC(weight_h264_pixels ## W)(uint8_t *_block, int stride, int height, \ int log2_denom, int weight, int offset) \ { \ int y; \ pixel *block = (pixel*)_block; \ stride >>= sizeof(pixel)-1; \ offset <<= (log2_denom + (BIT_DEPTH-8)); \ if(log2_denom) offset += 1<<(log2_denom-1); \ for (y = 0; y < height; y++, block += stride) { \ op_scale1(0); \ op_scale1(1); \ if(W==2) continue; \ op_scale1(2); \ op_scale1(3); \ if(W==4) continue; \ op_scale1(4); \ op_scale1(5); \ op_scale1(6); \ op_scale1(7); \ if(W==8) continue; \ op_scale1(8); \ op_scale1(9); \ op_scale1(10); \ op_scale1(11); \ op_scale1(12); \ op_scale1(13); \ op_scale1(14); \ op_scale1(15); \ } \ } \ static void FUNCC(biweight_h264_pixels ## W)(uint8_t *_dst, uint8_t *_src, int stride, int height, \ int log2_denom, int weightd, int weights, int offset) \ { \ int y; \ pixel *dst = (pixel*)_dst; \ pixel *src = (pixel*)_src; \ stride >>= sizeof(pixel)-1; \ offset <<= (BIT_DEPTH-8); \ offset = ((offset + 1) | 1) << log2_denom; \ for (y = 0; y < height; y++, dst += stride, src += stride) { \ op_scale2(0); \ op_scale2(1); \ if(W==2) continue; \ op_scale2(2); \ op_scale2(3); \ if(W==4) continue; \ op_scale2(4); \ op_scale2(5); \ op_scale2(6); \ op_scale2(7); \ if(W==8) continue; \ op_scale2(8); \ op_scale2(9); \ op_scale2(10); \ op_scale2(11); \ op_scale2(12); \ op_scale2(13); \ op_scale2(14); \ op_scale2(15); \ } \ } H264_WEIGHT(16) H264_WEIGHT(8) H264_WEIGHT(4) H264_WEIGHT(2) #undef op_scale1 #undef op_scale2 #undef H264_WEIGHT static av_always_inline av_flatten void FUNCC(h264_loop_filter_luma)(uint8_t *p_pix, int xstride, int ystride, int inner_iters, int alpha, int beta, int8_t *tc0) { pixel *pix = (pixel*)p_pix; int i, d; xstride >>= sizeof(pixel)-1; ystride >>= sizeof(pixel)-1; alpha <<= BIT_DEPTH - 8; beta <<= BIT_DEPTH - 8; for( i = 0; i < 4; i++ ) { const int tc_orig = tc0[i] << (BIT_DEPTH - 8); if( tc_orig < 0 ) { pix += inner_iters*ystride; continue; } for( d = 0; d < inner_iters; d++ ) { const int p0 = pix[-1*xstride]; const int p1 = pix[-2*xstride]; const int p2 = pix[-3*xstride]; const int q0 = pix[0]; const int q1 = pix[1*xstride]; const int q2 = pix[2*xstride]; if( FFABS( p0 - q0 ) < alpha && FFABS( p1 - p0 ) < beta && FFABS( q1 - q0 ) < beta ) { int tc = tc_orig; int i_delta; if( FFABS( p2 - p0 ) < beta ) { if(tc_orig) pix[-2*xstride] = p1 + av_clip( (( p2 + ( ( p0 + q0 + 1 ) >> 1 ) ) >> 1) - p1, -tc_orig, tc_orig ); tc++; } if( FFABS( q2 - q0 ) < beta ) { if(tc_orig) pix[ xstride] = q1 + av_clip( (( q2 + ( ( p0 + q0 + 1 ) >> 1 ) ) >> 1) - q1, -tc_orig, tc_orig ); tc++; } i_delta = av_clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc ); pix[-xstride] = av_clip_pixel( p0 + i_delta ); /* p0' */ pix[0] = av_clip_pixel( q0 - i_delta ); /* q0' */ } pix += ystride; } } } static void FUNCC(h264_v_loop_filter_luma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) { FUNCC(h264_loop_filter_luma)(pix, stride, sizeof(pixel), 4, alpha, beta, tc0); } static void FUNCC(h264_h_loop_filter_luma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) { FUNCC(h264_loop_filter_luma)(pix, sizeof(pixel), stride, 4, alpha, beta, tc0); } static void FUNCC(h264_h_loop_filter_luma_mbaff)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) { FUNCC(h264_loop_filter_luma)(pix, sizeof(pixel), stride, 2, alpha, beta, tc0); } static av_always_inline av_flatten void FUNCC(h264_loop_filter_luma_intra)(uint8_t *p_pix, int xstride, int ystride, int inner_iters, int alpha, int beta) { pixel *pix = (pixel*)p_pix; int d; xstride >>= sizeof(pixel)-1; ystride >>= sizeof(pixel)-1; alpha <<= BIT_DEPTH - 8; beta <<= BIT_DEPTH - 8; for( d = 0; d < 4 * inner_iters; d++ ) { const int p2 = pix[-3*xstride]; const int p1 = pix[-2*xstride]; const int p0 = pix[-1*xstride]; const int q0 = pix[ 0*xstride]; const int q1 = pix[ 1*xstride]; const int q2 = pix[ 2*xstride]; if( FFABS( p0 - q0 ) < alpha && FFABS( p1 - p0 ) < beta && FFABS( q1 - q0 ) < beta ) { if(FFABS( p0 - q0 ) < (( alpha >> 2 ) + 2 )){ if( FFABS( p2 - p0 ) < beta) { const int p3 = pix[-4*xstride]; /* p0', p1', p2' */ pix[-1*xstride] = ( p2 + 2*p1 + 2*p0 + 2*q0 + q1 + 4 ) >> 3; pix[-2*xstride] = ( p2 + p1 + p0 + q0 + 2 ) >> 2; pix[-3*xstride] = ( 2*p3 + 3*p2 + p1 + p0 + q0 + 4 ) >> 3; } else { /* p0' */ pix[-1*xstride] = ( 2*p1 + p0 + q1 + 2 ) >> 2; } if( FFABS( q2 - q0 ) < beta) { const int q3 = pix[3*xstride]; /* q0', q1', q2' */ pix[0*xstride] = ( p1 + 2*p0 + 2*q0 + 2*q1 + q2 + 4 ) >> 3; pix[1*xstride] = ( p0 + q0 + q1 + q2 + 2 ) >> 2; pix[2*xstride] = ( 2*q3 + 3*q2 + q1 + q0 + p0 + 4 ) >> 3; } else { /* q0' */ pix[0*xstride] = ( 2*q1 + q0 + p1 + 2 ) >> 2; } }else{ /* p0', q0' */ pix[-1*xstride] = ( 2*p1 + p0 + q1 + 2 ) >> 2; pix[ 0*xstride] = ( 2*q1 + q0 + p1 + 2 ) >> 2; } } pix += ystride; } } static void FUNCC(h264_v_loop_filter_luma_intra)(uint8_t *pix, int stride, int alpha, int beta) { FUNCC(h264_loop_filter_luma_intra)(pix, stride, sizeof(pixel), 4, alpha, beta); } static void FUNCC(h264_h_loop_filter_luma_intra)(uint8_t *pix, int stride, int alpha, int beta) { FUNCC(h264_loop_filter_luma_intra)(pix, sizeof(pixel), stride, 4, alpha, beta); } static void FUNCC(h264_h_loop_filter_luma_mbaff_intra)(uint8_t *pix, int stride, int alpha, int beta) { FUNCC(h264_loop_filter_luma_intra)(pix, sizeof(pixel), stride, 2, alpha, beta); } static av_always_inline av_flatten void FUNCC(h264_loop_filter_chroma)(uint8_t *p_pix, int xstride, int ystride, int inner_iters, int alpha, int beta, int8_t *tc0) { pixel *pix = (pixel*)p_pix; int i, d; alpha <<= BIT_DEPTH - 8; beta <<= BIT_DEPTH - 8; xstride >>= sizeof(pixel)-1; ystride >>= sizeof(pixel)-1; for( i = 0; i < 4; i++ ) { const int tc = ((tc0[i] - 1) << (BIT_DEPTH - 8)) + 1; if( tc <= 0 ) { pix += inner_iters*ystride; continue; } for( d = 0; d < inner_iters; d++ ) { const int p0 = pix[-1*xstride]; const int p1 = pix[-2*xstride]; const int q0 = pix[0]; const int q1 = pix[1*xstride]; if( FFABS( p0 - q0 ) < alpha && FFABS( p1 - p0 ) < beta && FFABS( q1 - q0 ) < beta ) { int delta = av_clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc ); pix[-xstride] = av_clip_pixel( p0 + delta ); /* p0' */ pix[0] = av_clip_pixel( q0 - delta ); /* q0' */ } pix += ystride; } } } static void FUNCC(h264_v_loop_filter_chroma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) { FUNCC(h264_loop_filter_chroma)(pix, stride, sizeof(pixel), 2, alpha, beta, tc0); } static void FUNCC(h264_h_loop_filter_chroma)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) { FUNCC(h264_loop_filter_chroma)(pix, sizeof(pixel), stride, 2, alpha, beta, tc0); } static void FUNCC(h264_h_loop_filter_chroma_mbaff)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) { FUNCC(h264_loop_filter_chroma)(pix, sizeof(pixel), stride, 1, alpha, beta, tc0); } static void FUNCC(h264_h_loop_filter_chroma422)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) { FUNCC(h264_loop_filter_chroma)(pix, sizeof(pixel), stride, 4, alpha, beta, tc0); } static void FUNCC(h264_h_loop_filter_chroma422_mbaff)(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) { FUNCC(h264_loop_filter_chroma)(pix, sizeof(pixel), stride, 2, alpha, beta, tc0); } static av_always_inline av_flatten void FUNCC(h264_loop_filter_chroma_intra)(uint8_t *p_pix, int xstride, int ystride, int inner_iters, int alpha, int beta) { pixel *pix = (pixel*)p_pix; int d; xstride >>= sizeof(pixel)-1; ystride >>= sizeof(pixel)-1; alpha <<= BIT_DEPTH - 8; beta <<= BIT_DEPTH - 8; for( d = 0; d < 4 * inner_iters; d++ ) { const int p0 = pix[-1*xstride]; const int p1 = pix[-2*xstride]; const int q0 = pix[0]; const int q1 = pix[1*xstride]; if( FFABS( p0 - q0 ) < alpha && FFABS( p1 - p0 ) < beta && FFABS( q1 - q0 ) < beta ) { pix[-xstride] = ( 2*p1 + p0 + q1 + 2 ) >> 2; /* p0' */ pix[0] = ( 2*q1 + q0 + p1 + 2 ) >> 2; /* q0' */ } pix += ystride; } } static void FUNCC(h264_v_loop_filter_chroma_intra)(uint8_t *pix, int stride, int alpha, int beta) { FUNCC(h264_loop_filter_chroma_intra)(pix, stride, sizeof(pixel), 2, alpha, beta); } static void FUNCC(h264_h_loop_filter_chroma_intra)(uint8_t *pix, int stride, int alpha, int beta) { FUNCC(h264_loop_filter_chroma_intra)(pix, sizeof(pixel), stride, 2, alpha, beta); } static void FUNCC(h264_h_loop_filter_chroma_mbaff_intra)(uint8_t *pix, int stride, int alpha, int beta) { FUNCC(h264_loop_filter_chroma_intra)(pix, sizeof(pixel), stride, 1, alpha, beta); } static void FUNCC(h264_h_loop_filter_chroma422_intra)(uint8_t *pix, int stride, int alpha, int beta) { FUNCC(h264_loop_filter_chroma_intra)(pix, sizeof(pixel), stride, 4, alpha, beta); } static void FUNCC(h264_h_loop_filter_chroma422_mbaff_intra)(uint8_t *pix, int stride, int alpha, int beta) { FUNCC(h264_loop_filter_chroma_intra)(pix, sizeof(pixel), stride, 2, alpha, beta); }