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vc_copylineRGBtoRGBA: fixes

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- avoid potential out-of-bound src access (if not padded)
- fixed wrong condition for rgb shifts 16,8,0
This commit is contained in:
Martin Pulec
2024-07-02 16:46:21 +02:00
parent 87d1db3b57
commit 54286c20bc
1 changed files with 2 additions and 2 deletions
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4
src/pixfmt_conv.c
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@@ -930,13 +930,13 @@ void vc_copylineRGBtoRGBA(unsigned char * __restrict dst, const unsigned char *
if (rshift == 0 && gshift == 8 && bshift == 16) {
is_simd_compat = true;
shuf = _mm_setr_epi8(0, 1, 2, 0xff, 3, 4, 5, 0xff, 6, 7, 8, 0xff, 9, 10, 11, 0xff);
} else if (rshift == 16 && gshift == 8 && bshift && 0) {
} else if (rshift == 16 && gshift == 8 && bshift == 0) {
is_simd_compat = true;
shuf = _mm_setr_epi8(2, 1, 0, 0xff, 5, 4, 3, 0xff, 8, 7, 6, 0xff, 11, 10, 9, 0xff);
}
if (is_simd_compat) {
OPTIMIZED_FOR (x = 0; x <= dst_len - 16; x += 16) {
OPTIMIZED_FOR (x = 0; x <= dst_len - 32; x += 16) {
loaded = _mm_lddqu_si128((const __m128i_u *) src);
loaded = _mm_shuffle_epi8(loaded, shuf);
loaded = _mm_or_si128(loaded, alpha_mask_sse);