dsp/lossless_enc.c: clear int sanitizer warnings
add explicit casts in calls to ColorTransformDelta()
clears warnings of the form:
implicit conversion from type 'uint8_t' (aka 'unsigned char') of value
254 (8-bit, unsigned) to type 'int8_t' (aka 'signed char') changed the
value to -2 (8-bit, signed)
@@ -547,10 +547,10 @@ void VP8LTransformColor_C(const VP8LMultipliers* const m, uint32_t* data,
const int8_t red = U32ToS8(argb >> 16);
int new_red = red & 0xff;
int new_blue = argb & 0xff;
- new_red -= ColorTransformDelta(m->green_to_red_, green);
+ new_red -= ColorTransformDelta((int8_t)m->green_to_red_, green);
new_red &= 0xff;
- new_blue -= ColorTransformDelta(m->green_to_blue_, green);
- new_blue -= ColorTransformDelta(m->red_to_blue_, red);
+ new_blue -= ColorTransformDelta((int8_t)m->green_to_blue_, green);
+ new_blue -= ColorTransformDelta((int8_t)m->red_to_blue_, red);
new_blue &= 0xff;
data[i] = (argb & 0xff00ff00u) | (new_red << 16) | (new_blue);
}
@@ -560,7 +560,7 @@ static WEBP_INLINE uint8_t TransformColorRed(uint8_t green_to_red,
uint32_t argb) {
const int8_t green = U32ToS8(argb >> 8);
int new_red = argb >> 16;
- new_red -= ColorTransformDelta(green_to_red, green);
+ new_red -= ColorTransformDelta((int8_t)green_to_red, green);
return (new_red & 0xff);
}
@@ -570,8 +570,8 @@ static WEBP_INLINE uint8_t TransformColorBlue(uint8_t green_to_blue,
const int8_t green = U32ToS8(argb >> 8);
const int8_t red = U32ToS8(argb >> 16);
uint8_t new_blue = argb & 0xff;
- new_blue -= ColorTransformDelta(green_to_blue, green);
- new_blue -= ColorTransformDelta(red_to_blue, red);
+ new_blue -= ColorTransformDelta((int8_t)green_to_blue, green);
+ new_blue -= ColorTransformDelta((int8_t)red_to_blue, red);
return (new_blue & 0xff);
}
