filters_sse2.c: quiet integer sanitizer warnings
with clang7+ quiets conversion warnings like:
implicit conversion from type 'int' of value -114 (32-bit, signed) to
type 'uint8_t' (aka 'unsigned char') changed the value to 142 (8-bit,
unsigned)
@@ -163,7 +163,8 @@ static void GradientPredictDirect_SSE2(const uint8_t* const row,
_mm_storel_epi64((__m128i*)(out + i), H);
}
for (; i < length; ++i) {
- out[i] = row[i] - GradientPredictor_SSE2(row[i - 1], top[i], top[i - 1]);
+ out[i] = (uint8_t)(row[i] -
+ GradientPredictor_SSE2(row[i - 1], top[i], top[i - 1]));
}
}
@@ -188,7 +189,7 @@ static WEBP_INLINE void DoGradientFilter_SSE2(const uint8_t* in,
// Filter line-by-line.
while (row < last_row) {
- out[0] = in[0] - in[-stride];
+ out[0] = (uint8_t)(in[0] - in[-stride]);
GradientPredictDirect_SSE2(in + 1, in + 1 - stride, out + 1, width - 1);
++row;
in += stride;
@@ -223,7 +224,7 @@ static void HorizontalUnfilter_SSE2(const uint8_t* prev, const uint8_t* in,
uint8_t* out, int width) {
int i;
__m128i last;
- out[0] = in[0] + (prev == NULL ? 0 : prev[0]);
+ out[0] = (uint8_t)(in[0] + (prev == NULL ? 0 : prev[0]));
if (width <= 1) return;
last = _mm_set_epi32(0, 0, 0, out[0]);
for (i = 1; i + 8 <= width; i += 8) {
@@ -238,7 +239,7 @@ static void HorizontalUnfilter_SSE2(const uint8_t* prev, const uint8_t* in,
_mm_storel_epi64((__m128i*)(out + i), A7);
last = _mm_srli_epi64(A7, 56);
}
- for (; i < width; ++i) out[i] = in[i] + out[i - 1];
+ for (; i < width; ++i) out[i] = (uint8_t)(in[i] + out[i - 1]);
}
static void VerticalUnfilter_SSE2(const uint8_t* prev, const uint8_t* in,
@@ -259,7 +260,7 @@ static void VerticalUnfilter_SSE2(const uint8_t* prev, const uint8_t* in,
_mm_storeu_si128((__m128i*)&out[i + 0], C0);
_mm_storeu_si128((__m128i*)&out[i + 16], C1);
}
- for (; i < width; ++i) out[i] = in[i] + prev[i];
+ for (; i < width; ++i) out[i] = (uint8_t)(in[i] + prev[i]);
}
}
@@ -306,7 +307,7 @@ static void GradientUnfilter_SSE2(const uint8_t* prev, const uint8_t* in,
if (prev == NULL) {
HorizontalUnfilter_SSE2(NULL, in, out, width);
} else {
- out[0] = in[0] + prev[0]; // predict from above
+ out[0] = (uint8_t)(in[0] + prev[0]); // predict from above
GradientPredictInverse_SSE2(in + 1, prev + 1, out + 1, width - 1);
}
}
