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| author | Arpi <arpi@thot.banki.hu> | 2001-12-09 12:04:09 +0000 |
|---|---|---|
| committer | Arpi <arpi@thot.banki.hu> | 2001-12-09 12:04:09 +0000 |
| commit | d962f6fd3a95e3345a7c17df938c75f67a6c6363 (patch) | |
| tree | ece30d9dc8264546709087cc5050833909342877 /libavcodec/dsputil.c | |
| parent | e3d2500fe498289a878b956f6efb4995438c9515 (diff) | |
| download | ffmpeg-d962f6fd3a95e3345a7c17df938c75f67a6c6363.tar.gz | |
new IDCT code by Michael Niedermayer (michaelni@gmx.at) - #define SIMPLE_IDCT to enable
Originally committed as revision 234 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/dsputil.c')
| -rw-r--r-- | libavcodec/dsputil.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/libavcodec/dsputil.c b/libavcodec/dsputil.c index b0cea56bda..f699b2ef68 100644 --- a/libavcodec/dsputil.c +++ b/libavcodec/dsputil.c @@ -20,6 +20,7 @@ #include <stdio.h> #include "avcodec.h" #include "dsputil.h" +#include "simple_idct.h" void (*ff_idct)(DCTELEM *block); void (*get_pixels)(DCTELEM *block, const UINT8 *pixels, int line_size); @@ -388,6 +389,27 @@ int pix_abs16x16_xy2_c(UINT8 *pix1, UINT8 *pix2, int line_size, int h) /* permute block according so that it corresponds to the MMX idct order */ +#ifdef SIMPLE_IDCT +void block_permute(INT16 *block) +{ + int i; + INT16 temp[64]; + +// for(i=0; i<64; i++) temp[i] = block[ block_permute_op(i) ]; + for(i=0; i<64; i++) temp[ block_permute_op(i) ] = block[i]; + + for(i=0; i<64; i++) block[i] = temp[i]; +/* + for(i=0; i<64; i++) + { + if((i&7)==0) printf("\n"); + printf("%2d ", block[i]); + } +*/ +} + +#else + void block_permute(INT16 *block) { int tmp1, tmp2, tmp3, tmp4, tmp5, tmp6; @@ -409,6 +431,7 @@ void block_permute(INT16 *block) block += 8; } } +#endif void dsputil_init(void) { @@ -425,7 +448,11 @@ void dsputil_init(void) squareTbl[i] = (i - 256) * (i - 256); } +#ifdef SIMPLE_IDCT + ff_idct = simple_idct; +#else ff_idct = j_rev_dct; +#endif get_pixels = get_pixels_c; put_pixels_clamped = put_pixels_clamped_c; add_pixels_clamped = add_pixels_clamped_c; @@ -449,6 +476,10 @@ void dsputil_init(void) use_permuted_idct = 0; #endif +#ifdef SIMPLE_IDCT + if(ff_idct == simple_idct) use_permuted_idct=0; +#endif + if (use_permuted_idct) { /* permute for IDCT */ for(i=0;i<64;i++) { |