diff options
Diffstat (limited to 'libavcodec/h264idct_template.c')
| -rw-r--r-- | libavcodec/h264idct_template.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/libavcodec/h264idct_template.c b/libavcodec/h264idct_template.c index ba5571576d..eba850ac6f 100644 --- a/libavcodec/h264idct_template.c +++ b/libavcodec/h264idct_template.c @@ -224,6 +224,29 @@ void FUNCC(ff_h264_idct_add8)(uint8_t **dest, const int *block_offset, DCTELEM * } } } + +void FUNCC(ff_h264_idct_add8_422)(uint8_t **dest, const int *block_offset, DCTELEM *block, int stride, const uint8_t nnzc[15*8]){ + int i, j; + + for(j=1; j<3; j++){ + for(i=j*16; i<j*16+4; i++){ + if(nnzc[ scan8[i] ]) + FUNCC(ff_h264_idct_add )(dest[j-1] + block_offset[i], block + i*16*sizeof(pixel), stride); + else if(((dctcoef*)block)[i*16]) + FUNCC(ff_h264_idct_dc_add)(dest[j-1] + block_offset[i], block + i*16*sizeof(pixel), stride); + } + } + + for(j=1; j<3; j++){ + for(i=j*16+4; i<j*16+8; i++){ + if(nnzc[ scan8[i+4] ]) + FUNCC(ff_h264_idct_add )(dest[j-1] + block_offset[i+4], block + i*16*sizeof(pixel), stride); + else if(((dctcoef*)block)[i*16]) + FUNCC(ff_h264_idct_dc_add)(dest[j-1] + block_offset[i+4], block + i*16*sizeof(pixel), stride); + } + } +} + /** * IDCT transforms the 16 dc values and dequantizes them. * @param qmul quantization parameter @@ -263,6 +286,33 @@ void FUNCC(ff_h264_luma_dc_dequant_idct)(DCTELEM *_output, DCTELEM *_input, int #undef stride } +void FUNCC(ff_h264_chroma422_dc_dequant_idct)(DCTELEM *_block, int qmul){ + const int stride= 16*2; + const int xStride= 16; + int i; + int temp[8]; + static const uint8_t x_offset[2]={0, 16}; + dctcoef *block = (dctcoef*)_block; + + for(i=0; i<4; i++){ + temp[2*i+0] = block[stride*i + xStride*0] + block[stride*i + xStride*1]; + temp[2*i+1] = block[stride*i + xStride*0] - block[stride*i + xStride*1]; + } + + for(i=0; i<2; i++){ + const int offset= x_offset[i]; + const int z0= temp[2*0+i] + temp[2*2+i]; + const int z1= temp[2*0+i] - temp[2*2+i]; + const int z2= temp[2*1+i] - temp[2*3+i]; + const int z3= temp[2*1+i] + temp[2*3+i]; + + block[stride*0+offset]= ((z0 + z3)*qmul + 128) >> 8; + block[stride*1+offset]= ((z1 + z2)*qmul + 128) >> 8; + block[stride*2+offset]= ((z1 - z2)*qmul + 128) >> 8; + block[stride*3+offset]= ((z0 - z3)*qmul + 128) >> 8; + } +} + void FUNCC(ff_h264_chroma_dc_dequant_idct)(DCTELEM *_block, int qmul){ const int stride= 16*2; const int xStride= 16; |