diff --git a/libavcodec/h264idct.c b/libavcodec/h264idct.c index 790f1883fd..d79777571a 100644 --- a/libavcodec/h264idct.c +++ b/libavcodec/h264idct.c @@ -25,251 +25,4 @@ * @author Michael Niedermayer */ -#include "dsputil.h" - -static av_always_inline void idct_internal(uint8_t *dst, DCTELEM *block, int stride, int block_stride, int shift, int add){ - int i; - uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; - - block[0] += 1<<(shift-1); - - for(i=0; i<4; i++){ - const int z0= block[i + block_stride*0] + block[i + block_stride*2]; - const int z1= block[i + block_stride*0] - block[i + block_stride*2]; - const int z2= (block[i + block_stride*1]>>1) - block[i + block_stride*3]; - const int z3= block[i + block_stride*1] + (block[i + block_stride*3]>>1); - - block[i + block_stride*0]= z0 + z3; - block[i + block_stride*1]= z1 + z2; - block[i + block_stride*2]= z1 - z2; - block[i + block_stride*3]= z0 - z3; - } - - for(i=0; i<4; i++){ - const int z0= block[0 + block_stride*i] + block[2 + block_stride*i]; - const int z1= block[0 + block_stride*i] - block[2 + block_stride*i]; - const int z2= (block[1 + block_stride*i]>>1) - block[3 + block_stride*i]; - const int z3= block[1 + block_stride*i] + (block[3 + block_stride*i]>>1); - - dst[i + 0*stride]= cm[ add*dst[i + 0*stride] + ((z0 + z3) >> shift) ]; - dst[i + 1*stride]= cm[ add*dst[i + 1*stride] + ((z1 + z2) >> shift) ]; - dst[i + 2*stride]= cm[ add*dst[i + 2*stride] + ((z1 - z2) >> shift) ]; - dst[i + 3*stride]= cm[ add*dst[i + 3*stride] + ((z0 - z3) >> shift) ]; - } -} - -void ff_h264_idct_add_c(uint8_t *dst, DCTELEM *block, int stride){ - idct_internal(dst, block, stride, 4, 6, 1); -} - -void ff_h264_lowres_idct_add_c(uint8_t *dst, int stride, DCTELEM *block){ - idct_internal(dst, block, stride, 8, 3, 1); -} - -void ff_h264_lowres_idct_put_c(uint8_t *dst, int stride, DCTELEM *block){ - idct_internal(dst, block, stride, 8, 3, 0); -} - -void ff_h264_idct8_add_c(uint8_t *dst, DCTELEM *block, int stride){ - int i; - uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; - - block[0] += 32; - - for( i = 0; i < 8; i++ ) - { - const int a0 = block[i+0*8] + block[i+4*8]; - const int a2 = block[i+0*8] - block[i+4*8]; - const int a4 = (block[i+2*8]>>1) - block[i+6*8]; - const int a6 = (block[i+6*8]>>1) + block[i+2*8]; - - const int b0 = a0 + a6; - const int b2 = a2 + a4; - const int b4 = a2 - a4; - const int b6 = a0 - a6; - - const int a1 = -block[i+3*8] + block[i+5*8] - block[i+7*8] - (block[i+7*8]>>1); - const int a3 = block[i+1*8] + block[i+7*8] - block[i+3*8] - (block[i+3*8]>>1); - const int a5 = -block[i+1*8] + block[i+7*8] + block[i+5*8] + (block[i+5*8]>>1); - const int a7 = block[i+3*8] + block[i+5*8] + block[i+1*8] + (block[i+1*8]>>1); - - const int b1 = (a7>>2) + a1; - const int b3 = a3 + (a5>>2); - const int b5 = (a3>>2) - a5; - const int b7 = a7 - (a1>>2); - - block[i+0*8] = b0 + b7; - block[i+7*8] = b0 - b7; - block[i+1*8] = b2 + b5; - block[i+6*8] = b2 - b5; - block[i+2*8] = b4 + b3; - block[i+5*8] = b4 - b3; - block[i+3*8] = b6 + b1; - block[i+4*8] = b6 - b1; - } - for( i = 0; i < 8; i++ ) - { - const int a0 = block[0+i*8] + block[4+i*8]; - const int a2 = block[0+i*8] - block[4+i*8]; - const int a4 = (block[2+i*8]>>1) - block[6+i*8]; - const int a6 = (block[6+i*8]>>1) + block[2+i*8]; - - const int b0 = a0 + a6; - const int b2 = a2 + a4; - const int b4 = a2 - a4; - const int b6 = a0 - a6; - - const int a1 = -block[3+i*8] + block[5+i*8] - block[7+i*8] - (block[7+i*8]>>1); - const int a3 = block[1+i*8] + block[7+i*8] - block[3+i*8] - (block[3+i*8]>>1); - const int a5 = -block[1+i*8] + block[7+i*8] + block[5+i*8] + (block[5+i*8]>>1); - const int a7 = block[3+i*8] + block[5+i*8] + block[1+i*8] + (block[1+i*8]>>1); - - const int b1 = (a7>>2) + a1; - const int b3 = a3 + (a5>>2); - const int b5 = (a3>>2) - a5; - const int b7 = a7 - (a1>>2); - - dst[i + 0*stride] = cm[ dst[i + 0*stride] + ((b0 + b7) >> 6) ]; - dst[i + 1*stride] = cm[ dst[i + 1*stride] + ((b2 + b5) >> 6) ]; - dst[i + 2*stride] = cm[ dst[i + 2*stride] + ((b4 + b3) >> 6) ]; - dst[i + 3*stride] = cm[ dst[i + 3*stride] + ((b6 + b1) >> 6) ]; - dst[i + 4*stride] = cm[ dst[i + 4*stride] + ((b6 - b1) >> 6) ]; - dst[i + 5*stride] = cm[ dst[i + 5*stride] + ((b4 - b3) >> 6) ]; - dst[i + 6*stride] = cm[ dst[i + 6*stride] + ((b2 - b5) >> 6) ]; - dst[i + 7*stride] = cm[ dst[i + 7*stride] + ((b0 - b7) >> 6) ]; - } -} - -// assumes all AC coefs are 0 -void ff_h264_idct_dc_add_c(uint8_t *dst, DCTELEM *block, int stride){ - int i, j; - int dc = (block[0] + 32) >> 6; - uint8_t *cm = ff_cropTbl + MAX_NEG_CROP + dc; - for( j = 0; j < 4; j++ ) - { - for( i = 0; i < 4; i++ ) - dst[i] = cm[ dst[i] ]; - dst += stride; - } -} - -void ff_h264_idct8_dc_add_c(uint8_t *dst, DCTELEM *block, int stride){ - int i, j; - int dc = (block[0] + 32) >> 6; - uint8_t *cm = ff_cropTbl + MAX_NEG_CROP + dc; - for( j = 0; j < 8; j++ ) - { - for( i = 0; i < 8; i++ ) - dst[i] = cm[ dst[i] ]; - dst += stride; - } -} - -//FIXME this table is a duplicate from h264data.h, and will be removed once the tables from, h264 have been split -static const uint8_t scan8[16 + 2*4]={ - 4+1*8, 5+1*8, 4+2*8, 5+2*8, - 6+1*8, 7+1*8, 6+2*8, 7+2*8, - 4+3*8, 5+3*8, 4+4*8, 5+4*8, - 6+3*8, 7+3*8, 6+4*8, 7+4*8, - 1+1*8, 2+1*8, - 1+2*8, 2+2*8, - 1+4*8, 2+4*8, - 1+5*8, 2+5*8, -}; - -void ff_h264_idct_add16_c(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){ - int i; - for(i=0; i<16; i++){ - int nnz = nnzc[ scan8[i] ]; - if(nnz){ - if(nnz==1 && block[i*16]) ff_h264_idct_dc_add_c(dst + block_offset[i], block + i*16, stride); - else idct_internal (dst + block_offset[i], block + i*16, stride, 4, 6, 1); - } - } -} - -void ff_h264_idct_add16intra_c(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){ - int i; - for(i=0; i<16; i++){ - if(nnzc[ scan8[i] ]) idct_internal (dst + block_offset[i], block + i*16, stride, 4, 6, 1); - else if(block[i*16]) ff_h264_idct_dc_add_c(dst + block_offset[i], block + i*16, stride); - } -} - -void ff_h264_idct8_add4_c(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){ - int i; - for(i=0; i<16; i+=4){ - int nnz = nnzc[ scan8[i] ]; - if(nnz){ - if(nnz==1 && block[i*16]) ff_h264_idct8_dc_add_c(dst + block_offset[i], block + i*16, stride); - else ff_h264_idct8_add_c (dst + block_offset[i], block + i*16, stride); - } - } -} - -void ff_h264_idct_add8_c(uint8_t **dest, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){ - int i; - for(i=16; i<16+8; i++){ - if(nnzc[ scan8[i] ]) - ff_h264_idct_add_c (dest[(i&4)>>2] + block_offset[i], block + i*16, stride); - else if(block[i*16]) - ff_h264_idct_dc_add_c(dest[(i&4)>>2] + block_offset[i], block + i*16, stride); - } -} -/** - * IDCT transforms the 16 dc values and dequantizes them. - * @param qp quantization parameter - */ -void ff_h264_luma_dc_dequant_idct_c(DCTELEM *output, DCTELEM *input, int qmul){ -#define stride 16 - int i; - int temp[16]; - static const uint8_t x_offset[4]={0, 2*stride, 8*stride, 10*stride}; - - for(i=0; i<4; i++){ - const int z0= input[4*i+0] + input[4*i+1]; - const int z1= input[4*i+0] - input[4*i+1]; - const int z2= input[4*i+2] - input[4*i+3]; - const int z3= input[4*i+2] + input[4*i+3]; - - temp[4*i+0]= z0+z3; - temp[4*i+1]= z0-z3; - temp[4*i+2]= z1-z2; - temp[4*i+3]= z1+z2; - } - - for(i=0; i<4; i++){ - const int offset= x_offset[i]; - const int z0= temp[4*0+i] + temp[4*2+i]; - const int z1= temp[4*0+i] - temp[4*2+i]; - const int z2= temp[4*1+i] - temp[4*3+i]; - const int z3= temp[4*1+i] + temp[4*3+i]; - - output[stride* 0+offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); - output[stride* 1+offset]= ((((z1 + z2)*qmul + 128 ) >> 8)); - output[stride* 4+offset]= ((((z1 - z2)*qmul + 128 ) >> 8)); - output[stride* 5+offset]= ((((z0 - z3)*qmul + 128 ) >> 8)); - } -#undef stride -} - -void ff_h264_chroma_dc_dequant_idct_c(DCTELEM *block, int qmul){ - const int stride= 16*2; - const int xStride= 16; - int a,b,c,d,e; - - a= block[stride*0 + xStride*0]; - b= block[stride*0 + xStride*1]; - c= block[stride*1 + xStride*0]; - d= block[stride*1 + xStride*1]; - - e= a-b; - a= a+b; - b= c-d; - c= c+d; - - block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7; - block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7; - block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7; - block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7; -} +#include "h264idct_template.c" diff --git a/libavcodec/h264idct_template.c b/libavcodec/h264idct_template.c new file mode 100644 index 0000000000..3069e41797 --- /dev/null +++ b/libavcodec/h264idct_template.c @@ -0,0 +1,278 @@ +/* + * H.264 IDCT + * Copyright (c) 2004-2011 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 IDCT. + * @author Michael Niedermayer + */ + +#include "dsputil.h" + +#ifndef AVCODEC_H264IDCT_INTERNAL_H +#define AVCODEC_H264IDCT_INTERNAL_H +//FIXME this table is a duplicate from h264data.h, and will be removed once the tables from, h264 have been split +static const uint8_t scan8[16 + 2*4]={ + 4+1*8, 5+1*8, 4+2*8, 5+2*8, + 6+1*8, 7+1*8, 6+2*8, 7+2*8, + 4+3*8, 5+3*8, 4+4*8, 5+4*8, + 6+3*8, 7+3*8, 6+4*8, 7+4*8, + 1+1*8, 2+1*8, + 1+2*8, 2+2*8, + 1+4*8, 2+4*8, + 1+5*8, 2+5*8, +}; +#endif + +static av_always_inline void idct_internal(uint8_t *dst, DCTELEM *block, int stride, int block_stride, int shift, int add){ + int i; + uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; + + block[0] += 1<<(shift-1); + + for(i=0; i<4; i++){ + const int z0= block[i + block_stride*0] + block[i + block_stride*2]; + const int z1= block[i + block_stride*0] - block[i + block_stride*2]; + const int z2= (block[i + block_stride*1]>>1) - block[i + block_stride*3]; + const int z3= block[i + block_stride*1] + (block[i + block_stride*3]>>1); + + block[i + block_stride*0]= z0 + z3; + block[i + block_stride*1]= z1 + z2; + block[i + block_stride*2]= z1 - z2; + block[i + block_stride*3]= z0 - z3; + } + + for(i=0; i<4; i++){ + const int z0= block[0 + block_stride*i] + block[2 + block_stride*i]; + const int z1= block[0 + block_stride*i] - block[2 + block_stride*i]; + const int z2= (block[1 + block_stride*i]>>1) - block[3 + block_stride*i]; + const int z3= block[1 + block_stride*i] + (block[3 + block_stride*i]>>1); + + dst[i + 0*stride]= cm[ add*dst[i + 0*stride] + ((z0 + z3) >> shift) ]; + dst[i + 1*stride]= cm[ add*dst[i + 1*stride] + ((z1 + z2) >> shift) ]; + dst[i + 2*stride]= cm[ add*dst[i + 2*stride] + ((z1 - z2) >> shift) ]; + dst[i + 3*stride]= cm[ add*dst[i + 3*stride] + ((z0 - z3) >> shift) ]; + } +} + +void ff_h264_idct_add_c(uint8_t *dst, DCTELEM *block, int stride){ + idct_internal(dst, block, stride, 4, 6, 1); +} + +void ff_h264_lowres_idct_add_c(uint8_t *dst, int stride, DCTELEM *block){ + idct_internal(dst, block, stride, 8, 3, 1); +} + +void ff_h264_lowres_idct_put_c(uint8_t *dst, int stride, DCTELEM *block){ + idct_internal(dst, block, stride, 8, 3, 0); +} + +void ff_h264_idct8_add_c(uint8_t *dst, DCTELEM *block, int stride){ + int i; + uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; + + block[0] += 32; + + for( i = 0; i < 8; i++ ) + { + const int a0 = block[i+0*8] + block[i+4*8]; + const int a2 = block[i+0*8] - block[i+4*8]; + const int a4 = (block[i+2*8]>>1) - block[i+6*8]; + const int a6 = (block[i+6*8]>>1) + block[i+2*8]; + + const int b0 = a0 + a6; + const int b2 = a2 + a4; + const int b4 = a2 - a4; + const int b6 = a0 - a6; + + const int a1 = -block[i+3*8] + block[i+5*8] - block[i+7*8] - (block[i+7*8]>>1); + const int a3 = block[i+1*8] + block[i+7*8] - block[i+3*8] - (block[i+3*8]>>1); + const int a5 = -block[i+1*8] + block[i+7*8] + block[i+5*8] + (block[i+5*8]>>1); + const int a7 = block[i+3*8] + block[i+5*8] + block[i+1*8] + (block[i+1*8]>>1); + + const int b1 = (a7>>2) + a1; + const int b3 = a3 + (a5>>2); + const int b5 = (a3>>2) - a5; + const int b7 = a7 - (a1>>2); + + block[i+0*8] = b0 + b7; + block[i+7*8] = b0 - b7; + block[i+1*8] = b2 + b5; + block[i+6*8] = b2 - b5; + block[i+2*8] = b4 + b3; + block[i+5*8] = b4 - b3; + block[i+3*8] = b6 + b1; + block[i+4*8] = b6 - b1; + } + for( i = 0; i < 8; i++ ) + { + const int a0 = block[0+i*8] + block[4+i*8]; + const int a2 = block[0+i*8] - block[4+i*8]; + const int a4 = (block[2+i*8]>>1) - block[6+i*8]; + const int a6 = (block[6+i*8]>>1) + block[2+i*8]; + + const int b0 = a0 + a6; + const int b2 = a2 + a4; + const int b4 = a2 - a4; + const int b6 = a0 - a6; + + const int a1 = -block[3+i*8] + block[5+i*8] - block[7+i*8] - (block[7+i*8]>>1); + const int a3 = block[1+i*8] + block[7+i*8] - block[3+i*8] - (block[3+i*8]>>1); + const int a5 = -block[1+i*8] + block[7+i*8] + block[5+i*8] + (block[5+i*8]>>1); + const int a7 = block[3+i*8] + block[5+i*8] + block[1+i*8] + (block[1+i*8]>>1); + + const int b1 = (a7>>2) + a1; + const int b3 = a3 + (a5>>2); + const int b5 = (a3>>2) - a5; + const int b7 = a7 - (a1>>2); + + dst[i + 0*stride] = cm[ dst[i + 0*stride] + ((b0 + b7) >> 6) ]; + dst[i + 1*stride] = cm[ dst[i + 1*stride] + ((b2 + b5) >> 6) ]; + dst[i + 2*stride] = cm[ dst[i + 2*stride] + ((b4 + b3) >> 6) ]; + dst[i + 3*stride] = cm[ dst[i + 3*stride] + ((b6 + b1) >> 6) ]; + dst[i + 4*stride] = cm[ dst[i + 4*stride] + ((b6 - b1) >> 6) ]; + dst[i + 5*stride] = cm[ dst[i + 5*stride] + ((b4 - b3) >> 6) ]; + dst[i + 6*stride] = cm[ dst[i + 6*stride] + ((b2 - b5) >> 6) ]; + dst[i + 7*stride] = cm[ dst[i + 7*stride] + ((b0 - b7) >> 6) ]; + } +} + +// assumes all AC coefs are 0 +void ff_h264_idct_dc_add_c(uint8_t *dst, DCTELEM *block, int stride){ + int i, j; + int dc = (block[0] + 32) >> 6; + uint8_t *cm = ff_cropTbl + MAX_NEG_CROP + dc; + for( j = 0; j < 4; j++ ) + { + for( i = 0; i < 4; i++ ) + dst[i] = cm[ dst[i] ]; + dst += stride; + } +} + +void ff_h264_idct8_dc_add_c(uint8_t *dst, DCTELEM *block, int stride){ + int i, j; + int dc = (block[0] + 32) >> 6; + uint8_t *cm = ff_cropTbl + MAX_NEG_CROP + dc; + for( j = 0; j < 8; j++ ) + { + for( i = 0; i < 8; i++ ) + dst[i] = cm[ dst[i] ]; + dst += stride; + } +} + +void ff_h264_idct_add16_c(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){ + int i; + for(i=0; i<16; i++){ + int nnz = nnzc[ scan8[i] ]; + if(nnz){ + if(nnz==1 && block[i*16]) ff_h264_idct_dc_add_c(dst + block_offset[i], block + i*16, stride); + else idct_internal (dst + block_offset[i], block + i*16, stride, 4, 6, 1); + } + } +} + +void ff_h264_idct_add16intra_c(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){ + int i; + for(i=0; i<16; i++){ + if(nnzc[ scan8[i] ]) idct_internal (dst + block_offset[i], block + i*16, stride, 4, 6, 1); + else if(block[i*16]) ff_h264_idct_dc_add_c(dst + block_offset[i], block + i*16, stride); + } +} + +void ff_h264_idct8_add4_c(uint8_t *dst, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){ + int i; + for(i=0; i<16; i+=4){ + int nnz = nnzc[ scan8[i] ]; + if(nnz){ + if(nnz==1 && block[i*16]) ff_h264_idct8_dc_add_c(dst + block_offset[i], block + i*16, stride); + else ff_h264_idct8_add_c (dst + block_offset[i], block + i*16, stride); + } + } +} + +void ff_h264_idct_add8_c(uint8_t **dest, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[6*8]){ + int i; + for(i=16; i<16+8; i++){ + if(nnzc[ scan8[i] ]) + ff_h264_idct_add_c (dest[(i&4)>>2] + block_offset[i], block + i*16, stride); + else if(block[i*16]) + ff_h264_idct_dc_add_c(dest[(i&4)>>2] + block_offset[i], block + i*16, stride); + } +} +/** + * IDCT transforms the 16 dc values and dequantizes them. + * @param qp quantization parameter + */ +void ff_h264_luma_dc_dequant_idct_c(DCTELEM *output, DCTELEM *input, int qmul){ +#define stride 16 + int i; + int temp[16]; + static const uint8_t x_offset[4]={0, 2*stride, 8*stride, 10*stride}; + + for(i=0; i<4; i++){ + const int z0= input[4*i+0] + input[4*i+1]; + const int z1= input[4*i+0] - input[4*i+1]; + const int z2= input[4*i+2] - input[4*i+3]; + const int z3= input[4*i+2] + input[4*i+3]; + + temp[4*i+0]= z0+z3; + temp[4*i+1]= z0-z3; + temp[4*i+2]= z1-z2; + temp[4*i+3]= z1+z2; + } + + for(i=0; i<4; i++){ + const int offset= x_offset[i]; + const int z0= temp[4*0+i] + temp[4*2+i]; + const int z1= temp[4*0+i] - temp[4*2+i]; + const int z2= temp[4*1+i] - temp[4*3+i]; + const int z3= temp[4*1+i] + temp[4*3+i]; + + output[stride* 0+offset]= ((((z0 + z3)*qmul + 128 ) >> 8)); + output[stride* 1+offset]= ((((z1 + z2)*qmul + 128 ) >> 8)); + output[stride* 4+offset]= ((((z1 - z2)*qmul + 128 ) >> 8)); + output[stride* 5+offset]= ((((z0 - z3)*qmul + 128 ) >> 8)); + } +#undef stride +} + +void ff_h264_chroma_dc_dequant_idct_c(DCTELEM *block, int qmul){ + const int stride= 16*2; + const int xStride= 16; + int a,b,c,d,e; + + a= block[stride*0 + xStride*0]; + b= block[stride*0 + xStride*1]; + c= block[stride*1 + xStride*0]; + d= block[stride*1 + xStride*1]; + + e= a-b; + a= a+b; + b= c-d; + c= c+d; + + block[stride*0 + xStride*0]= ((a+c)*qmul) >> 7; + block[stride*0 + xStride*1]= ((e+b)*qmul) >> 7; + block[stride*1 + xStride*0]= ((a-c)*qmul) >> 7; + block[stride*1 + xStride*1]= ((e-b)*qmul) >> 7; +}