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swscale: handle complete dimensions for monoblack/white. 

Fixes bug 269.
This commit is contained in:
Ronald S. Bultje 2012-04-04 10:50:29 -07:00
parent e484265c97
commit bc0bdda77b
2 changed files with 11 additions and 5 deletions
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6
libswscale/input.c
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@ -309,7 +309,8 @@ static void monowhite2Y_c(uint8_t *dst, const uint8_t *src,
int width, uint32_t *unused)
{
int i, j;
for (i=0; i<width/8; i++) {
width = (width + 7) >> 3;
for (i = 0; i < width; i++) {
int d= ~src[i];
for(j=0; j<8; j++)
dst[8*i+j]= ((d>>(7-j))&1)*255;
@ -320,7 +321,8 @@ static void monoblack2Y_c(uint8_t *dst, const uint8_t *src,
int width, uint32_t *unused)
{
int i, j;
for (i=0; i<width/8; i++) {
width = (width + 7) >> 3;
for (i = 0; i < width; i++) {
int d= src[i];
for(j=0; j<8; j++)
dst[8*i+j]= ((d>>(7-j))&1)*255;

10
libswscale/output.c
View File

@ -317,7 +317,7 @@ yuv2mono_X_c_template(SwsContext *c, const int16_t *lumFilter,
int i;
unsigned acc = 0;
for (i = 0; i < dstW - 1; i += 2) {
for (i = 0; i < dstW; i += 2) {
int j;
int Y1 = 1 << 18;
int Y2 = 1 << 18;
@ -338,6 +338,10 @@ yuv2mono_X_c_template(SwsContext *c, const int16_t *lumFilter,
output_pixel(*dest++, acc);
}
}
if (i & 6) {
output_pixel(*dest, acc);
}
}
static av_always_inline void
@ -352,7 +356,7 @@ yuv2mono_2_c_template(SwsContext *c, const int16_t *buf[2],
int yalpha1 = 4095 - yalpha;
int i;
for (i = 0; i < dstW - 7; i += 8) {
for (i = 0; i < dstW; i += 8) {
int Y, acc = 0;
Y = (buf0[i + 0] * yalpha1 + buf1[i + 0] * yalpha) >> 19;
@ -385,7 +389,7 @@ yuv2mono_1_c_template(SwsContext *c, const int16_t *buf0,
const uint8_t * const d128 = dither_8x8_220[y & 7];
int i;
for (i = 0; i < dstW - 7; i += 8) {
for (i = 0; i < dstW; i += 8) {
int acc = 0;
accumulate_bit(acc, (buf0[i + 0] >> 7) + d128[0]);