diff options
Diffstat (limited to 'libavcodec/rv34dsp.c')
| -rw-r--r-- | libavcodec/rv34dsp.c | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/libavcodec/rv34dsp.c b/libavcodec/rv34dsp.c index 4145c4dd85..1ddcea4c0f 100644 --- a/libavcodec/rv34dsp.c +++ b/libavcodec/rv34dsp.c @@ -88,15 +88,15 @@ static void rv34_inv_transform_noround_c(DCTELEM *block){ rv34_row_transform(temp, block); for(i = 0; i < 4; i++){ - const int z0 = 13*(temp[4*0+i] + temp[4*2+i]); - const int z1 = 13*(temp[4*0+i] - temp[4*2+i]); - const int z2 = 7* temp[4*1+i] - 17*temp[4*3+i]; - const int z3 = 17* temp[4*1+i] + 7*temp[4*3+i]; - - block[i*4+0] = ((z0 + z3) * 3) >> 11; - block[i*4+1] = ((z1 + z2) * 3) >> 11; - block[i*4+2] = ((z1 - z2) * 3) >> 11; - block[i*4+3] = ((z0 - z3) * 3) >> 11; + const int z0 = 39*(temp[4*0+i] + temp[4*2+i]); + const int z1 = 39*(temp[4*0+i] - temp[4*2+i]); + const int z2 = 21* temp[4*1+i] - 51*temp[4*3+i]; + const int z3 = 51* temp[4*1+i] + 21*temp[4*3+i]; + + block[i*4+0] = (z0 + z3) >> 11; + block[i*4+1] = (z1 + z2) >> 11; + block[i*4+2] = (z1 - z2) >> 11; + block[i*4+3] = (z0 - z3) >> 11; } } |