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filters.c: quiet integer sanitizer warnings

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with clang7+ quiets conversion warnings like:
implicit conversion from type 'int' of value -12 (32-bit, signed) to
type 'uint8_t' (aka 'unsigned char') changed the value to 244 (8-bit,
unsigned)

Change-Id: I053c92301e55dcb0cae89a7733636283da942176
This commit is contained in:
James Zern 2019-06-28 23:16:28 -07:00
parent ec1cc40a59
commit e6a92c5e15
1 changed files with 6 additions and 6 deletions
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12
src/dsp/filters.c
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@ -33,9 +33,9 @@ static WEBP_INLINE void PredictLine_C(const uint8_t* src, const uint8_t* pred,
uint8_t* dst, int length, int inverse) {
int i;
if (inverse) {
for (i = 0; i < length; ++i) dst[i] = src[i] + pred[i];
for (i = 0; i < length; ++i) dst[i] = (uint8_t)(src[i] + pred[i]);
} else {
for (i = 0; i < length; ++i) dst[i] = src[i] - pred[i];
for (i = 0; i < length; ++i) dst[i] = (uint8_t)(src[i] - pred[i]);
}
}
@ -155,7 +155,7 @@ static WEBP_INLINE void DoGradientFilter_C(const uint8_t* in,
const int pred = GradientPredictor_C(preds[w - 1],
preds[w - stride],
preds[w - stride - 1]);
out[w] = in[w] + (inverse ? pred : -pred);
out[w] = (uint8_t)(in[w] + (inverse ? pred : -pred));
}
++row;
preds += stride;
@ -194,7 +194,7 @@ static void HorizontalUnfilter_C(const uint8_t* prev, const uint8_t* in,
uint8_t pred = (prev == NULL) ? 0 : prev[0];
int i;
for (i = 0; i < width; ++i) {
out[i] = pred + in[i];
out[i] = (uint8_t)(pred + in[i]);
pred = out[i];
}
}
@ -206,7 +206,7 @@ static void VerticalUnfilter_C(const uint8_t* prev, const uint8_t* in,
HorizontalUnfilter_C(NULL, in, out, width);
} else {
int i;
for (i = 0; i < width; ++i) out[i] = prev[i] + in[i];
for (i = 0; i < width; ++i) out[i] = (uint8_t)(prev[i] + in[i]);
}
}
#endif // !WEBP_NEON_OMIT_C_CODE
@ -220,7 +220,7 @@ static void GradientUnfilter_C(const uint8_t* prev, const uint8_t* in,
int i;
for (i = 0; i < width; ++i) {
top = prev[i]; // need to read this first, in case prev==out
left = in[i] + GradientPredictor_C(left, top, top_left);
left = (uint8_t)(in[i] + GradientPredictor_C(left, top, top_left));
top_left = top;
out[i] = left;
}