From 563c72dabb7ef34b667836c1b0e2008c08e89fa6 Mon Sep 17 00:00:00 2001 From: Oskar Arvidsson Date: Mon, 9 May 2011 10:58:40 -0400 Subject: Preparatory patch for high bit depth h264 decoding support. Signed-off-by: Ronald S. Bultje --- libavcodec/h264dsp_template.c | 285 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 285 insertions(+) create mode 100644 libavcodec/h264dsp_template.c (limited to 'libavcodec/h264dsp_template.c') diff --git a/libavcodec/h264dsp_template.c b/libavcodec/h264dsp_template.c new file mode 100644 index 0000000000..2fe09ff56b --- /dev/null +++ b/libavcodec/h264dsp_template.c @@ -0,0 +1,285 @@ +/* + * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder + * Copyright (c) 2003-2010 Michael Niedermayer + * + * This file is part of Libav. + * + * Libav 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. + * + * Libav 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 Libav; 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 + */ + +#define op_scale1(x) block[x] = av_clip_uint8( (block[x]*weight + offset) >> log2_denom ) +#define op_scale2(x) dst[x] = av_clip_uint8( (src[x]*weights + dst[x]*weightd + offset) >> (log2_denom+1)) +#define H264_WEIGHT(W,H) \ +static void weight_h264_pixels ## W ## x ## H ## _c(uint8_t *block, int stride, int log2_denom, int weight, int offset){ \ + int y; \ + offset <<= log2_denom; \ + if(log2_denom) offset += 1<<(log2_denom-1); \ + for(y=0; y> 1 ) ) >> 1) - p1, -tc0[i], tc0[i] ); + tc++; + } + if( FFABS( q2 - q0 ) < beta ) { + if(tc0[i]) + pix[ xstride] = q1 + av_clip( (( q2 + ( ( p0 + q0 + 1 ) >> 1 ) ) >> 1) - q1, -tc0[i], tc0[i] ); + tc++; + } + + i_delta = av_clip( (((q0 - p0 ) << 2) + (p1 - q1) + 4) >> 3, -tc, tc ); + pix[-xstride] = av_clip_uint8( p0 + i_delta ); /* p0' */ + pix[0] = av_clip_uint8( q0 - i_delta ); /* q0' */ + } + pix += ystride; + } + } +} +static void h264_v_loop_filter_luma_c(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) +{ + h264_loop_filter_luma_c(pix, stride, 1, 4, alpha, beta, tc0); +} +static void h264_h_loop_filter_luma_c(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) +{ + h264_loop_filter_luma_c(pix, 1, stride, 4, alpha, beta, tc0); +} +static void h264_h_loop_filter_luma_mbaff_c(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) +{ + h264_loop_filter_luma_c(pix, 1, stride, 2, alpha, beta, tc0); +} + +static av_always_inline av_flatten void h264_loop_filter_luma_intra_c(uint8_t *pix, int xstride, int ystride, int inner_iters, int alpha, int beta) +{ + int d; + 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 h264_v_loop_filter_luma_intra_c(uint8_t *pix, int stride, int alpha, int beta) +{ + h264_loop_filter_luma_intra_c(pix, stride, 1, 4, alpha, beta); +} +static void h264_h_loop_filter_luma_intra_c(uint8_t *pix, int stride, int alpha, int beta) +{ + h264_loop_filter_luma_intra_c(pix, 1, stride, 4, alpha, beta); +} +static void h264_h_loop_filter_luma_mbaff_intra_c(uint8_t *pix, int stride, int alpha, int beta) +{ + h264_loop_filter_luma_intra_c(pix, 1, stride, 2, alpha, beta); +} + +static av_always_inline av_flatten void h264_loop_filter_chroma_c(uint8_t *pix, int xstride, int ystride, int inner_iters, int alpha, int beta, int8_t *tc0) +{ + int i, d; + for( i = 0; i < 4; i++ ) { + const int tc = tc0[i]; + 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_uint8( p0 + delta ); /* p0' */ + pix[0] = av_clip_uint8( q0 - delta ); /* q0' */ + } + pix += ystride; + } + } +} +static void h264_v_loop_filter_chroma_c(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) +{ + h264_loop_filter_chroma_c(pix, stride, 1, 2, alpha, beta, tc0); +} +static void h264_h_loop_filter_chroma_c(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) +{ + h264_loop_filter_chroma_c(pix, 1, stride, 2, alpha, beta, tc0); +} +static void h264_h_loop_filter_chroma_mbaff_c(uint8_t *pix, int stride, int alpha, int beta, int8_t *tc0) +{ + h264_loop_filter_chroma_c(pix, 1, stride, 1, alpha, beta, tc0); +} + +static av_always_inline av_flatten void h264_loop_filter_chroma_intra_c(uint8_t *pix, int xstride, int ystride, int inner_iters, int alpha, int beta) +{ + int d; + 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 h264_v_loop_filter_chroma_intra_c(uint8_t *pix, int stride, int alpha, int beta) +{ + h264_loop_filter_chroma_intra_c(pix, stride, 1, 2, alpha, beta); +} +static void h264_h_loop_filter_chroma_intra_c(uint8_t *pix, int stride, int alpha, int beta) +{ + h264_loop_filter_chroma_intra_c(pix, 1, stride, 2, alpha, beta); +} +static void h264_h_loop_filter_chroma_mbaff_intra_c(uint8_t *pix, int stride, int alpha, int beta) +{ + h264_loop_filter_chroma_intra_c(pix, 1, stride, 1, alpha, beta); +} -- cgit v1.2.3