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Implement clear_blocks_axp.

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Originally committed as revision 722 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Falk Hüffner 2002-07-05 19:16:26 +00:00
parent 02da51ec60
commit 0a12d6fdfd
1 changed files with 20 additions and 0 deletions
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20
libavcodec/alpha/dsputil_alpha.c
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@ -105,6 +105,24 @@ void add_pixels_clamped_mvi(const DCTELEM *block, uint8_t *pixels,
} }
#endif #endif
static void clear_blocks_axp(DCTELEM *blocks) {
uint64_t *p = (uint64_t *) blocks;
int n = sizeof(DCTELEM) * 6 * 64;
do {
p[0] = 0;
p[1] = 0;
p[2] = 0;
p[3] = 0;
p[4] = 0;
p[5] = 0;
p[6] = 0;
p[7] = 0;
p += 8;
n -= 8 * 8;
} while (n);
}
static inline uint64_t avg2_no_rnd(uint64_t a, uint64_t b) static inline uint64_t avg2_no_rnd(uint64_t a, uint64_t b)
{ {
return (a & b) + (((a ^ b) & BYTE_VEC(0xfe)) >> 1); return (a & b) + (((a ^ b) & BYTE_VEC(0xfe)) >> 1);
@ -259,6 +277,8 @@ void dsputil_init_alpha(void)
avg_no_rnd_pixels_tab[2] = avg_no_rnd_pixels_y2_axp; avg_no_rnd_pixels_tab[2] = avg_no_rnd_pixels_y2_axp;
avg_no_rnd_pixels_tab[3] = avg_no_rnd_pixels_xy2_axp; avg_no_rnd_pixels_tab[3] = avg_no_rnd_pixels_xy2_axp;
clear_blocks = clear_blocks_axp;
/* amask clears all bits that correspond to present features. */ /* amask clears all bits that correspond to present features. */
if (amask(AMASK_MVI) == 0) { if (amask(AMASK_MVI) == 0) {
put_pixels_clamped = put_pixels_clamped_mvi_asm; put_pixels_clamped = put_pixels_clamped_mvi_asm;