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altivec support for snow 

Originally committed as revision 5228 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Luca Barbato 2006-03-27 12:51:19 +00:00
parent e62c29bf57
commit 22b48b85b6
5 changed files with 57 additions and 30 deletions
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1
MAINTAINERS
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@ -212,3 +212,4 @@ BeOS Francois Revol
i386 Michael Niedermayer
Mac OS X / PowerPC Romain Dolbeau
Amiga / PowerPC Colin Ward
Linux / PowerPC Luca Barbato

2
libavcodec/Makefile
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@ -388,7 +388,7 @@ endif
ifeq ($(TARGET_ALTIVEC),yes)
OBJS += ppc/dsputil_altivec.o ppc/mpegvideo_altivec.o ppc/idct_altivec.o \
ppc/fft_altivec.o ppc/gmc_altivec.o ppc/fdct_altivec.o \
ppc/dsputil_h264_altivec.o
ppc/dsputil_h264_altivec.o ppc/dsputil_snow_altivec.o
endif
ifeq ($(TARGET_ARCH_SH4),yes)

29
libavcodec/i386/snowdsp_mmx.c
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@ -21,35 +21,6 @@
#include "../snow.h"
#include "mmx.h"
static void always_inline snow_interleave_line_header(int * i, int width, DWTELEM * low, DWTELEM * high){
(*i) = (width) - 2;
if (width & 1){
low[(*i)+1] = low[((*i)+1)>>1];
(*i)--;
}
}
static void always_inline snow_horizontal_compose_lift_lead_out(int i, DWTELEM * dst, DWTELEM * src, DWTELEM * ref, int width, int w, int lift_high, int mul, int add, int shift){
for(; i<w; i++){
dst[i] = src[i] - ((mul * (ref[i] + ref[i + 1]) + add) >> shift);
}
if((width^lift_high)&1){
dst[w] = src[w] - ((mul * 2 * ref[w] + add) >> shift);
}
}
static void always_inline snow_horizontal_compose_liftS_lead_out(int i, DWTELEM * dst, DWTELEM * src, DWTELEM * ref, int width, int w){
for(; i<w; i++){
dst[i] = src[i] - (((-(ref[i] + ref[(i+1)])+W_BO) - 4 * src[i]) >> W_BS);
}
if(width&1){
dst[w] = src[w] - (((-2 * ref[w] + W_BO) - 4 * src[w]) >> W_BS);
}
}
void ff_snow_horizontal_compose97i_sse2(DWTELEM *b, int width){
const int w2= (width+1)>>1;
// SSE2 code runs faster with pointers aligned on a 32-byte boundary.

16
libavcodec/ppc/dsputil_ppc.c
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@ -30,6 +30,17 @@ extern void fdct_altivec(int16_t *block);
extern void idct_put_altivec(uint8_t *dest, int line_size, int16_t *block);
extern void idct_add_altivec(uint8_t *dest, int line_size, int16_t *block);
extern void ff_snow_horizontal_compose97i_altivec(DWTELEM *b, int width);
extern void ff_snow_vertical_compose97i_altivec(DWTELEM *b0, DWTELEM *b1,
DWTELEM *b2, DWTELEM *b3,
DWTELEM *b4, DWTELEM *b5,
int width);
extern void ff_snow_inner_add_yblock_altivec(uint8_t *obmc, const int obmc_stride,
uint8_t * * block, int b_w, int b_h,
int src_x, int src_y, int src_stride,
slice_buffer * sb, int add,
uint8_t * dst8);
int mm_flags = 0;
int mm_support(void)
@ -297,6 +308,11 @@ void dsputil_init_ppc(DSPContext* c, AVCodecContext *avctx)
c->hadamard8_diff[1] = hadamard8_diff8x8_altivec;
#endif
c->horizontal_compose97i = ff_snow_horizontal_compose97i_altivec;
c->vertical_compose97i = ff_snow_vertical_compose97i_altivec;
c->inner_add_yblock = ff_snow_inner_add_yblock_altivec;
#ifdef CONFIG_ENCODERS
if (avctx->dct_algo == FF_DCT_AUTO ||
avctx->dct_algo == FF_DCT_ALTIVEC)

39
libavcodec/snow.h
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@ -120,4 +120,43 @@ extern void ff_snow_vertical_compose97i(DWTELEM *b0, DWTELEM *b1, DWTELEM *b2, D
extern void ff_snow_horizontal_compose97i(DWTELEM *b, int width);
extern void ff_snow_inner_add_yblock(uint8_t *obmc, const int obmc_stride, uint8_t * * block, int b_w, int b_h, int src_x, int src_y, int src_stride, slice_buffer * sb, int add, uint8_t * dst8);
/* C bits used by mmx/sse2/altivec */
static always_inline void snow_interleave_line_header(int * i, int width, DWTELEM * low, DWTELEM * high){
(*i) = (width) - 2;
if (width & 1){
low[(*i)+1] = low[((*i)+1)>>1];
(*i)--;
}
}
static always_inline void snow_interleave_line_footer(int * i, DWTELEM * low, DWTELEM * high){
for (; (*i)>=0; (*i)-=2){
low[(*i)+1] = high[(*i)>>1];
low[*i] = low[(*i)>>1];
}
}
static always_inline void snow_horizontal_compose_lift_lead_out(int i, DWTELEM * dst, DWTELEM * src, DWTELEM * ref, int width, int w, int lift_high, int mul, int add, int shift){
for(; i<w; i++){
dst[i] = src[i] - ((mul * (ref[i] + ref[i + 1]) + add) >> shift);
}
if((width^lift_high)&1){
dst[w] = src[w] - ((mul * 2 * ref[w] + add) >> shift);
}
}
static always_inline void snow_horizontal_compose_liftS_lead_out(int i, DWTELEM * dst, DWTELEM * src, DWTELEM * ref, int width, int w){
for(; i<w; i++){
dst[i] = src[i] - (((-(ref[i] + ref[(i+1)])+W_BO) - 4 * src[i]) >> W_BS);
}
if(width&1){
dst[w] = src[w] - (((-2 * ref[w] + W_BO) - 4 * src[w]) >> W_BS);
}
}
#endif