loopfilter.c: normalize flat func param type

flat/flat2 are stored as int8_t as returned by the filter_mask*
functions.

this quiets integer sanitizer warnings of the form:
vpx_dsp/loopfilter.c:197:28: runtime error: implicit conversion from
type 'int8_t' (aka 'signed char') of value -1 (8-bit, signed) to type
'uint8_t' (aka 'unsigned char') changed the value to 255 (8-bit,
unsigned)

Bug: b/229626362
Change-Id: Iacb6ae052d4cb2b6e0ebccbacf59ece9501d3b5f

diff --git a/vpx_dsp/loopfilter.c b/vpx_dsp/loopfilter.c
index 995602831722ff8674c21e25754a664f97354d65..d6504aab1f524caba2a776146834aa89b58c8449 100644 (file)
--- a/vpx_dsp/loopfilter.c
+++ b/vpx_dsp/loopfilter.c
@@ -159,7 +159,7 @@ void vpx_lpf_vertical_4_dual_c(uint8_t *s, int pitch, const uint8_t *blimit0,
   vpx_lpf_vertical_4_c(s + 8 * pitch, pitch, blimit1, limit1, thresh1);
 }
 
-static INLINE void filter8(int8_t mask, uint8_t thresh, uint8_t flat,
+static INLINE void filter8(int8_t mask, uint8_t thresh, int8_t flat,
                            uint8_t *op3, uint8_t *op2, uint8_t *op1,
                            uint8_t *op0, uint8_t *oq0, uint8_t *oq1,
                            uint8_t *oq2, uint8_t *oq3) {
@@ -232,8 +232,8 @@ void vpx_lpf_vertical_8_dual_c(uint8_t *s, int pitch, const uint8_t *blimit0,
   vpx_lpf_vertical_8_c(s + 8 * pitch, pitch, blimit1, limit1, thresh1);
 }
 
-static INLINE void filter16(int8_t mask, uint8_t thresh, uint8_t flat,
-                            uint8_t flat2, uint8_t *op7, uint8_t *op6,
+static INLINE void filter16(int8_t mask, uint8_t thresh, int8_t flat,
+                            int8_t flat2, uint8_t *op7, uint8_t *op6,
                             uint8_t *op5, uint8_t *op4, uint8_t *op3,
                             uint8_t *op2, uint8_t *op1, uint8_t *op0,
                             uint8_t *oq0, uint8_t *oq1, uint8_t *oq2,
@@ -505,7 +505,7 @@ void vpx_highbd_lpf_vertical_4_dual_c(
                               bd);
 }
 
-static INLINE void highbd_filter8(int8_t mask, uint8_t thresh, uint8_t flat,
+static INLINE void highbd_filter8(int8_t mask, uint8_t thresh, int8_t flat,
                                   uint16_t *op3, uint16_t *op2, uint16_t *op1,
                                   uint16_t *op0, uint16_t *oq0, uint16_t *oq1,
                                   uint16_t *oq2, uint16_t *oq3, int bd) {
@@ -584,8 +584,8 @@ void vpx_highbd_lpf_vertical_8_dual_c(
                               bd);
 }
 
-static INLINE void highbd_filter16(int8_t mask, uint8_t thresh, uint8_t flat,
-                                   uint8_t flat2, uint16_t *op7, uint16_t *op6,
+static INLINE void highbd_filter16(int8_t mask, uint8_t thresh, int8_t flat,
+                                   int8_t flat2, uint16_t *op7, uint16_t *op6,
                                    uint16_t *op5, uint16_t *op4, uint16_t *op3,
                                    uint16_t *op2, uint16_t *op1, uint16_t *op0,
                                    uint16_t *oq0, uint16_t *oq1, uint16_t *oq2,