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Diffstat (limited to 'media/ffvpx/libavcodec/vp8dsp.c')
-rw-r--r--media/ffvpx/libavcodec/vp8dsp.c38
1 files changed, 20 insertions, 18 deletions
diff --git a/media/ffvpx/libavcodec/vp8dsp.c b/media/ffvpx/libavcodec/vp8dsp.c
index 07bea69c7..fed5c67a9 100644
--- a/media/ffvpx/libavcodec/vp8dsp.c
+++ b/media/ffvpx/libavcodec/vp8dsp.c
@@ -53,7 +53,8 @@ static void name ## _idct_dc_add4y_c(uint8_t *dst, int16_t block[4][16], \
#if CONFIG_VP7_DECODER
static void vp7_luma_dc_wht_c(int16_t block[4][4][16], int16_t dc[16])
{
- int i, a1, b1, c1, d1;
+ int i;
+ unsigned a1, b1, c1, d1;
int16_t tmp[16];
for (i = 0; i < 4; i++) {
@@ -61,10 +62,10 @@ static void vp7_luma_dc_wht_c(int16_t block[4][4][16], int16_t dc[16])
b1 = (dc[i * 4 + 0] - dc[i * 4 + 2]) * 23170;
c1 = dc[i * 4 + 1] * 12540 - dc[i * 4 + 3] * 30274;
d1 = dc[i * 4 + 1] * 30274 + dc[i * 4 + 3] * 12540;
- tmp[i * 4 + 0] = (a1 + d1) >> 14;
- tmp[i * 4 + 3] = (a1 - d1) >> 14;
- tmp[i * 4 + 1] = (b1 + c1) >> 14;
- tmp[i * 4 + 2] = (b1 - c1) >> 14;
+ tmp[i * 4 + 0] = (int)(a1 + d1) >> 14;
+ tmp[i * 4 + 3] = (int)(a1 - d1) >> 14;
+ tmp[i * 4 + 1] = (int)(b1 + c1) >> 14;
+ tmp[i * 4 + 2] = (int)(b1 - c1) >> 14;
}
for (i = 0; i < 4; i++) {
@@ -73,10 +74,10 @@ static void vp7_luma_dc_wht_c(int16_t block[4][4][16], int16_t dc[16])
c1 = tmp[i + 4] * 12540 - tmp[i + 12] * 30274;
d1 = tmp[i + 4] * 30274 + tmp[i + 12] * 12540;
AV_ZERO64(dc + i * 4);
- block[0][i][0] = (a1 + d1 + 0x20000) >> 18;
- block[3][i][0] = (a1 - d1 + 0x20000) >> 18;
- block[1][i][0] = (b1 + c1 + 0x20000) >> 18;
- block[2][i][0] = (b1 - c1 + 0x20000) >> 18;
+ block[0][i][0] = (int)(a1 + d1 + 0x20000) >> 18;
+ block[3][i][0] = (int)(a1 - d1 + 0x20000) >> 18;
+ block[1][i][0] = (int)(b1 + c1 + 0x20000) >> 18;
+ block[2][i][0] = (int)(b1 - c1 + 0x20000) >> 18;
}
}
@@ -95,7 +96,8 @@ static void vp7_luma_dc_wht_dc_c(int16_t block[4][4][16], int16_t dc[16])
static void vp7_idct_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)
{
- int i, a1, b1, c1, d1;
+ int i;
+ unsigned a1, b1, c1, d1;
int16_t tmp[16];
for (i = 0; i < 4; i++) {
@@ -104,10 +106,10 @@ static void vp7_idct_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)
c1 = block[i * 4 + 1] * 12540 - block[i * 4 + 3] * 30274;
d1 = block[i * 4 + 1] * 30274 + block[i * 4 + 3] * 12540;
AV_ZERO64(block + i * 4);
- tmp[i * 4 + 0] = (a1 + d1) >> 14;
- tmp[i * 4 + 3] = (a1 - d1) >> 14;
- tmp[i * 4 + 1] = (b1 + c1) >> 14;
- tmp[i * 4 + 2] = (b1 - c1) >> 14;
+ tmp[i * 4 + 0] = (int)(a1 + d1) >> 14;
+ tmp[i * 4 + 3] = (int)(a1 - d1) >> 14;
+ tmp[i * 4 + 1] = (int)(b1 + c1) >> 14;
+ tmp[i * 4 + 2] = (int)(b1 - c1) >> 14;
}
for (i = 0; i < 4; i++) {
@@ -116,13 +118,13 @@ static void vp7_idct_add_c(uint8_t *dst, int16_t block[16], ptrdiff_t stride)
c1 = tmp[i + 4] * 12540 - tmp[i + 12] * 30274;
d1 = tmp[i + 4] * 30274 + tmp[i + 12] * 12540;
dst[0 * stride + i] = av_clip_uint8(dst[0 * stride + i] +
- ((a1 + d1 + 0x20000) >> 18));
+ ((int)(a1 + d1 + 0x20000) >> 18));
dst[3 * stride + i] = av_clip_uint8(dst[3 * stride + i] +
- ((a1 - d1 + 0x20000) >> 18));
+ ((int)(a1 - d1 + 0x20000) >> 18));
dst[1 * stride + i] = av_clip_uint8(dst[1 * stride + i] +
- ((b1 + c1 + 0x20000) >> 18));
+ ((int)(b1 + c1 + 0x20000) >> 18));
dst[2 * stride + i] = av_clip_uint8(dst[2 * stride + i] +
- ((b1 - c1 + 0x20000) >> 18));
+ ((int)(b1 - c1 + 0x20000) >> 18));
}
}