| /* |
| * 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 / MPEG-4 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, ptrdiff_t stride, int height, \ |
| int log2_denom, int weight, int offset) \ |
| { \ |
| int y; \ |
| pixel *block = (pixel*)_block; \ |
| stride >>= sizeof(pixel)-1; \ |
| offset = (unsigned)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, ptrdiff_t 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 = (unsigned)offset << (BIT_DEPTH-8); \ |
| offset = (unsigned)((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, ptrdiff_t xstride, ptrdiff_t 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] * (1 << (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 ) * 4) + (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, ptrdiff_t 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, ptrdiff_t 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, ptrdiff_t 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, ptrdiff_t xstride, ptrdiff_t 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, ptrdiff_t 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, ptrdiff_t 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, ptrdiff_t 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, ptrdiff_t xstride, ptrdiff_t 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] - 1U) << (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) * 4 + (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, ptrdiff_t 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, ptrdiff_t 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, ptrdiff_t 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, ptrdiff_t 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, ptrdiff_t 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, ptrdiff_t xstride, ptrdiff_t 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, ptrdiff_t 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, ptrdiff_t 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, ptrdiff_t 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, ptrdiff_t 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, ptrdiff_t stride, int alpha, int beta) |
| { |
| FUNCC(h264_loop_filter_chroma_intra)(pix, sizeof(pixel), stride, 2, alpha, beta); |
| } |
