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added inlined put/add functions

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Originally committed as revision 671 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Fabrice Bellard 2002-06-05 18:46:25 +00:00
parent ad31c904b2
commit d36a246675
2 changed files with 118 additions and 13 deletions
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128
libavcodec/simple_idct.c
View File

@ -22,7 +22,7 @@
written by Aaron Holtzman <aholtzma@ess.engr.uvic.ca>)
*/
#include "avcodec.h"
#include "dsputil.h"
#include "simple_idct.h"
#if 0
@ -261,9 +261,11 @@ static inline void idctRowCondDC (int16_t * row)
}
#endif /* not ARCH_ALPHA */
static inline void idctSparseCol (int16_t * col)
static inline void idctSparseColPut (UINT8 *dest, int line_size,
int16_t * col)
{
int a0, a1, a2, a3, b0, b1, b2, b3;
UINT8 *cm = cropTbl + MAX_NEG_CROP;
/* XXX: I did that only to give same values as previous code */
a0 = W4 * (col[8*0] + ((1<<(COL_SHIFT-1))/W4));
@ -314,14 +316,93 @@ static inline void idctSparseCol (int16_t * col)
MAC16(b3, - W1, col[8*7]);
}
col[8*0] = (a0 + b0) >> COL_SHIFT;
col[8*7] = (a0 - b0) >> COL_SHIFT;
col[8*1] = (a1 + b1) >> COL_SHIFT;
col[8*6] = (a1 - b1) >> COL_SHIFT;
col[8*2] = (a2 + b2) >> COL_SHIFT;
col[8*5] = (a2 - b2) >> COL_SHIFT;
col[8*3] = (a3 + b3) >> COL_SHIFT;
col[8*4] = (a3 - b3) >> COL_SHIFT;
dest[0] = cm[(a0 + b0) >> COL_SHIFT];
dest += line_size;
dest[0] = cm[(a1 + b1) >> COL_SHIFT];
dest += line_size;
dest[0] = cm[(a2 + b2) >> COL_SHIFT];
dest += line_size;
dest[0] = cm[(a3 + b3) >> COL_SHIFT];
dest += line_size;
dest[0] = cm[(a3 - b3) >> COL_SHIFT];
dest += line_size;
dest[0] = cm[(a2 - b2) >> COL_SHIFT];
dest += line_size;
dest[0] = cm[(a1 - b1) >> COL_SHIFT];
dest += line_size;
dest[0] = cm[(a0 - b0) >> COL_SHIFT];
}
static inline void idctSparseColAdd (UINT8 *dest, int line_size,
int16_t * col)
{
int a0, a1, a2, a3, b0, b1, b2, b3;
UINT8 *cm = cropTbl + MAX_NEG_CROP;
/* XXX: I did that only to give same values as previous code */
a0 = W4 * (col[8*0] + ((1<<(COL_SHIFT-1))/W4));
a1 = a0;
a2 = a0;
a3 = a0;
a0 += + W2*col[8*2];
a1 += + W6*col[8*2];
a2 += - W6*col[8*2];
a3 += - W2*col[8*2];
MUL16(b0, W1, col[8*1]);
MUL16(b1, W3, col[8*1]);
MUL16(b2, W5, col[8*1]);
MUL16(b3, W7, col[8*1]);
MAC16(b0, + W3, col[8*3]);
MAC16(b1, - W7, col[8*3]);
MAC16(b2, - W1, col[8*3]);
MAC16(b3, - W5, col[8*3]);
if(col[8*4]){
a0 += + W4*col[8*4];
a1 += - W4*col[8*4];
a2 += - W4*col[8*4];
a3 += + W4*col[8*4];
}
if (col[8*5]) {
MAC16(b0, + W5, col[8*5]);
MAC16(b1, - W1, col[8*5]);
MAC16(b2, + W7, col[8*5]);
MAC16(b3, + W3, col[8*5]);
}
if(col[8*6]){
a0 += + W6*col[8*6];
a1 += - W2*col[8*6];
a2 += + W2*col[8*6];
a3 += - W6*col[8*6];
}
if (col[8*7]) {
MAC16(b0, + W7, col[8*7]);
MAC16(b1, - W5, col[8*7]);
MAC16(b2, + W3, col[8*7]);
MAC16(b3, - W1, col[8*7]);
}
dest[0] = cm[dest[0] + ((a0 + b0) >> COL_SHIFT)];
dest += line_size;
dest[0] = cm[dest[0] + ((a1 + b1) >> COL_SHIFT)];
dest += line_size;
dest[0] = cm[dest[0] + ((a2 + b2) >> COL_SHIFT)];
dest += line_size;
dest[0] = cm[dest[0] + ((a3 + b3) >> COL_SHIFT)];
dest += line_size;
dest[0] = cm[dest[0] + ((a3 - b3) >> COL_SHIFT)];
dest += line_size;
dest[0] = cm[dest[0] + ((a2 - b2) >> COL_SHIFT)];
dest += line_size;
dest[0] = cm[dest[0] + ((a1 - b1) >> COL_SHIFT)];
dest += line_size;
dest[0] = cm[dest[0] + ((a0 - b0) >> COL_SHIFT)];
}
#ifdef ARCH_ALPHA
@ -389,16 +470,39 @@ void simple_idct (short *block)
}
}
/* XXX: suppress this mess */
void simple_idct_put(UINT8 *dest, int line_size, DCTELEM *block)
{
simple_idct(block);
put_pixels_clamped(block, dest, line_size);
}
void simple_idct_add(UINT8 *dest, int line_size, DCTELEM *block)
{
simple_idct(block);
add_pixels_clamped(block, dest, line_size);
}
#else
void simple_idct (short *block)
void simple_idct_put(UINT8 *dest, int line_size, INT16 *block)
{
int i;
for(i=0; i<8; i++)
idctRowCondDC(block + i*8);
for(i=0; i<8; i++)
idctSparseCol(block + i);
idctSparseColPut(dest + i, line_size, block + i);
}
void simple_idct_add(UINT8 *dest, int line_size, INT16 *block)
{
int i;
for(i=0; i<8; i++)
idctRowCondDC(block + i*8);
for(i=0; i<8; i++)
idctSparseColAdd(dest + i, line_size, block + i);
}
#endif

3
libavcodec/simple_idct.h
View File

@ -18,5 +18,6 @@
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
void simple_idct(short *block);
void simple_idct_put(UINT8 *dest, int line_size, INT16 *block);
void simple_idct_add(UINT8 *dest, int line_size, INT16 *block);
void simple_idct_mmx(short *block);