diff options
Diffstat (limited to 'libswscale/swscale_altivec_template.c')
| -rw-r--r-- | libswscale/swscale_altivec_template.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/libswscale/swscale_altivec_template.c b/libswscale/swscale_altivec_template.c index 47b7e0dc6e..2111cec410 100644 --- a/libswscale/swscale_altivec_template.c +++ b/libswscale/swscale_altivec_template.c @@ -245,12 +245,12 @@ static inline void hScale_altivec_real(int16_t *dst, int dstW, uint8_t *src, int src_v = vec_mergeh(src_v, (vector signed short)vzero); filter_v = vec_ld(i << 3, filter); - // the 3 above is 2 (filterSize == 4) + 1 (sizeof(short) == 2) + // The 3 above is 2 (filterSize == 4) + 1 (sizeof(short) == 2). - // the neat trick : we only care for half the elements, + // The neat trick: We only care for half the elements, // high or low depending on (i<<3)%16 (it's 0 or 8 here), - // and we're going to use vec_mule, so we chose - // carefully how to "unpack" the elements into the even slots + // and we're going to use vec_mule, so we choose + // carefully how to "unpack" the elements into the even slots. if ((i << 3) % 16) filter_v = vec_mergel(filter_v, (vector signed short)vzero); else @@ -405,12 +405,12 @@ static inline int yv12toyuy2_unscaled_altivec(SwsContext *c, uint8_t* src[], int return srcSliceH; } - /* this code assume: + /* This code assumes: 1) dst is 16 bytes-aligned 2) dstStride is a multiple of 16 3) width is a multiple of 16 - 4) lum&chrom stride are multiple of 8 + 4) lum & chrom stride are multiples of 8 */ for (y=0; y<height; y++) { @@ -482,12 +482,12 @@ static inline int yv12touyvy_unscaled_altivec(SwsContext *c, uint8_t* src[], int return srcSliceH; } - /* this code assume: + /* This code assumes: 1) dst is 16 bytes-aligned 2) dstStride is a multiple of 16 3) width is a multiple of 16 - 4) lum&chrom stride are multiple of 8 + 4) lum & chrom stride are multiples of 8 */ for (y=0; y<height; y++) { |