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Linshizhi
ffmpeg.wasm-core
Commits
60f10e0a
Commit
60f10e0a
authored
Oct 08, 2011
by
Mans Rullgard
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h264pred: use unsigned types for pixel values, fix signed overflows
Signed-off-by:
Mans Rullgard
<
mans@mansr.com
>
parent
4d1418cd
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Showing
2 changed files
with
21 additions
and
21 deletions
+21
-21
h264pred.c
libavcodec/h264pred.c
+5
-5
h264pred_template.c
libavcodec/h264pred_template.c
+16
-16
No files found.
libavcodec/h264pred.c
View file @
60f10e0a
...
...
@@ -40,7 +40,7 @@
#undef BIT_DEPTH
static
void
pred4x4_vertical_vp8_c
(
uint8_t
*
src
,
const
uint8_t
*
topright
,
int
stride
){
const
int
lt
=
src
[
-
1
-
1
*
stride
];
const
unsigned
lt
=
src
[
-
1
-
1
*
stride
];
LOAD_TOP_EDGE
LOAD_TOP_RIGHT_EDGE
uint32_t
v
=
PACK_4U8
((
lt
+
2
*
t0
+
t1
+
2
)
>>
2
,
...
...
@@ -55,7 +55,7 @@ static void pred4x4_vertical_vp8_c(uint8_t *src, const uint8_t *topright, int st
}
static
void
pred4x4_horizontal_vp8_c
(
uint8_t
*
src
,
const
uint8_t
*
topright
,
int
stride
){
const
int
lt
=
src
[
-
1
-
1
*
stride
];
const
unsigned
lt
=
src
[
-
1
-
1
*
stride
];
LOAD_LEFT_EDGE
AV_WN32A
(
src
+
0
*
stride
,
((
lt
+
2
*
l0
+
l1
+
2
)
>>
2
)
*
0x01010101
);
...
...
@@ -290,7 +290,7 @@ static void pred16x16_tm_vp8_c(uint8_t *src, int stride){
static
void
pred8x8_left_dc_rv40_c
(
uint8_t
*
src
,
int
stride
){
int
i
;
int
dc0
;
unsigned
dc0
;
dc0
=
0
;
for
(
i
=
0
;
i
<
8
;
i
++
)
...
...
@@ -305,7 +305,7 @@ static void pred8x8_left_dc_rv40_c(uint8_t *src, int stride){
static
void
pred8x8_top_dc_rv40_c
(
uint8_t
*
src
,
int
stride
){
int
i
;
int
dc0
;
unsigned
dc0
;
dc0
=
0
;
for
(
i
=
0
;
i
<
8
;
i
++
)
...
...
@@ -320,7 +320,7 @@ static void pred8x8_top_dc_rv40_c(uint8_t *src, int stride){
static
void
pred8x8_dc_rv40_c
(
uint8_t
*
src
,
int
stride
){
int
i
;
int
dc0
=
0
;
unsigned
dc0
=
0
;
for
(
i
=
0
;
i
<
4
;
i
++
){
dc0
+=
src
[
-
1
+
i
*
stride
]
+
src
[
i
-
stride
];
...
...
libavcodec/h264pred_template.c
View file @
60f10e0a
...
...
@@ -121,28 +121,28 @@ static void FUNCC(pred4x4_129_dc)(uint8_t *_src, const uint8_t *topright, int _s
#define LOAD_TOP_RIGHT_EDGE\
const
int av_unused t4
= topright[0];\
const
int av_unused t5
= topright[1];\
const
int av_unused t6
= topright[2];\
const
int av_unused t7
= topright[3];\
const
unsigned av_unused t4
= topright[0];\
const
unsigned av_unused t5
= topright[1];\
const
unsigned av_unused t6
= topright[2];\
const
unsigned av_unused t7
= topright[3];\
#define LOAD_DOWN_LEFT_EDGE\
const
int av_unused l4
= src[-1+4*stride];\
const
int av_unused l5
= src[-1+5*stride];\
const
int av_unused l6
= src[-1+6*stride];\
const
int av_unused l7
= src[-1+7*stride];\
const
unsigned av_unused l4
= src[-1+4*stride];\
const
unsigned av_unused l5
= src[-1+5*stride];\
const
unsigned av_unused l6
= src[-1+6*stride];\
const
unsigned av_unused l7
= src[-1+7*stride];\
#define LOAD_LEFT_EDGE\
const
int av_unused l0
= src[-1+0*stride];\
const
int av_unused l1
= src[-1+1*stride];\
const
int av_unused l2
= src[-1+2*stride];\
const
int av_unused l3
= src[-1+3*stride];\
const
unsigned av_unused l0
= src[-1+0*stride];\
const
unsigned av_unused l1
= src[-1+1*stride];\
const
unsigned av_unused l2
= src[-1+2*stride];\
const
unsigned av_unused l3
= src[-1+3*stride];\
#define LOAD_TOP_EDGE\
const
int av_unused t0
= src[ 0-1*stride];\
const
int av_unused t1
= src[ 1-1*stride];\
const
int av_unused t2
= src[ 2-1*stride];\
const
int av_unused t3
= src[ 3-1*stride];\
const
unsigned av_unused t0
= src[ 0-1*stride];\
const
unsigned av_unused t1
= src[ 1-1*stride];\
const
unsigned av_unused t2
= src[ 2-1*stride];\
const
unsigned av_unused t3
= src[ 3-1*stride];\
static
void
FUNCC
(
pred4x4_down_right
)(
uint8_t
*
_src
,
const
uint8_t
*
topright
,
int
_stride
){
pixel
*
src
=
(
pixel
*
)
_src
;
...
...
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