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Code Issues Releases Activity

Improve some uses of ff_cropTbl with constant offset

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Originally committed as revision 23728 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2010-06-22 23:12:48 +00:00
parent 25d3445811
commit 8fbd4f51a8
4 changed files with 47 additions and 43 deletions
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4
libavcodec/bfin/vp3_bfin.c
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@ -25,14 +25,14 @@
/* Intra iDCT offset 128 */
void ff_bfin_vp3_idct_put (uint8_t *dest, int line_size, DCTELEM *block)
{
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP + 128;
int i,j;
ff_bfin_vp3_idct (block);
for (i=0;i<8;i++)
for (j=0;j<8;j++)
dest[line_size*i+j]=cm[128+block[i*8+j]];
dest[line_size*i+j]=cm[block[i*8+j]];
}
/* Inter iDCT */

8
libavcodec/h264idct.c
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@ -143,24 +143,24 @@ void ff_h264_idct8_add_c(uint8_t *dst, DCTELEM *block, int stride){
// assumes all AC coefs are 0
void ff_h264_idct_dc_add_c(uint8_t *dst, DCTELEM *block, int stride){
int i, j;
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
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] + dc ];
dst[i] = cm[ dst[i] ];
dst += stride;
}
}
void ff_h264_idct8_dc_add_c(uint8_t *dst, DCTELEM *block, int stride){
int i, j;
uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
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] + dc ];
dst[i] = cm[ dst[i] ];
dst += stride;
}
}

60
libavcodec/vc1dsp.c
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@ -182,18 +182,19 @@ static void vc1_inv_trans_8x8_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
{
int i;
int dc = block[0];
const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
const uint8_t *cm;
dc = (3 * dc + 1) >> 1;
dc = (3 * dc + 16) >> 5;
cm = ff_cropTbl + MAX_NEG_CROP + dc;
for(i = 0; i < 8; i++){
dest[0] = cm[dest[0]+dc];
dest[1] = cm[dest[1]+dc];
dest[2] = cm[dest[2]+dc];
dest[3] = cm[dest[3]+dc];
dest[4] = cm[dest[4]+dc];
dest[5] = cm[dest[5]+dc];
dest[6] = cm[dest[6]+dc];
dest[7] = cm[dest[7]+dc];
dest[0] = cm[dest[0]];
dest[1] = cm[dest[1]];
dest[2] = cm[dest[2]];
dest[3] = cm[dest[3]];
dest[4] = cm[dest[4]];
dest[5] = cm[dest[5]];
dest[6] = cm[dest[6]];
dest[7] = cm[dest[7]];
dest += linesize;
}
}
@ -273,18 +274,19 @@ static void vc1_inv_trans_8x4_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
{
int i;
int dc = block[0];
const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
const uint8_t *cm;
dc = ( 3 * dc + 1) >> 1;
dc = (17 * dc + 64) >> 7;
cm = ff_cropTbl + MAX_NEG_CROP + dc;
for(i = 0; i < 4; i++){
dest[0] = cm[dest[0]+dc];
dest[1] = cm[dest[1]+dc];
dest[2] = cm[dest[2]+dc];
dest[3] = cm[dest[3]+dc];
dest[4] = cm[dest[4]+dc];
dest[5] = cm[dest[5]+dc];
dest[6] = cm[dest[6]+dc];
dest[7] = cm[dest[7]+dc];
dest[0] = cm[dest[0]];
dest[1] = cm[dest[1]];
dest[2] = cm[dest[2]];
dest[3] = cm[dest[3]];
dest[4] = cm[dest[4]];
dest[5] = cm[dest[5]];
dest[6] = cm[dest[6]];
dest[7] = cm[dest[7]];
dest += linesize;
}
}
@ -350,14 +352,15 @@ static void vc1_inv_trans_4x8_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
{
int i;
int dc = block[0];
const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
const uint8_t *cm;
dc = (17 * dc + 4) >> 3;
dc = (12 * dc + 64) >> 7;
cm = ff_cropTbl + MAX_NEG_CROP + dc;
for(i = 0; i < 8; i++){
dest[0] = cm[dest[0]+dc];
dest[1] = cm[dest[1]+dc];
dest[2] = cm[dest[2]+dc];
dest[3] = cm[dest[3]+dc];
dest[0] = cm[dest[0]];
dest[1] = cm[dest[1]];
dest[2] = cm[dest[2]];
dest[3] = cm[dest[3]];
dest += linesize;
}
}
@ -423,14 +426,15 @@ static void vc1_inv_trans_4x4_dc_c(uint8_t *dest, int linesize, DCTELEM *block)
{
int i;
int dc = block[0];
const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
const uint8_t *cm;
dc = (17 * dc + 4) >> 3;
dc = (17 * dc + 64) >> 7;
cm = ff_cropTbl + MAX_NEG_CROP + dc;
for(i = 0; i < 4; i++){
dest[0] = cm[dest[0]+dc];
dest[1] = cm[dest[1]+dc];
dest[2] = cm[dest[2]+dc];
dest[3] = cm[dest[3]+dc];
dest[0] = cm[dest[0]];
dest[1] = cm[dest[1]];
dest[2] = cm[dest[2]];
dest[3] = cm[dest[3]];
dest += linesize;
}
}

18
libavcodec/vp3dsp.c
View File

@ -224,18 +224,18 @@ void ff_vp3_idct_add_c(uint8_t *dest/*align 8*/, int line_size, DCTELEM *block/*
}
void ff_vp3_idct_dc_add_c(uint8_t *dest/*align 8*/, int line_size, const DCTELEM *block/*align 16*/){
const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
int i, dc = (block[0] + 15) >> 5;
const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP + dc;
for(i = 0; i < 8; i++){
dest[0] = cm[dest[0]+dc];
dest[1] = cm[dest[1]+dc];
dest[2] = cm[dest[2]+dc];
dest[3] = cm[dest[3]+dc];
dest[4] = cm[dest[4]+dc];
dest[5] = cm[dest[5]+dc];
dest[6] = cm[dest[6]+dc];
dest[7] = cm[dest[7]+dc];
dest[0] = cm[dest[0]];
dest[1] = cm[dest[1]];
dest[2] = cm[dest[2]];
dest[3] = cm[dest[3]];
dest[4] = cm[dest[4]];
dest[5] = cm[dest[5]];
dest[6] = cm[dest[6]];
dest[7] = cm[dest[7]];
dest += line_size;
}
}