int16_t **alpPixBuf= c->alpPixBuf;
const int vLumBufSize= c->vLumBufSize;
const int vChrBufSize= c->vChrBufSize;
- int16_t *vLumFilterPos= c->vLumFilterPos;
- int16_t *vChrFilterPos= c->vChrFilterPos;
+ int32_t *vLumFilterPos= c->vLumFilterPos;
+ int32_t *vChrFilterPos= c->vChrFilterPos;
int16_t *vLumFilter= c->vLumFilter;
int16_t *vChrFilter= c->vChrFilter;
int32_t *lumMmxFilter= c->lumMmxFilter;
const int16_t **chrUSrcPtr= (const int16_t **)(void*) chrUPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
const int16_t **alpSrcPtr= (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? (const int16_t **)(void*) alpPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize : NULL;
int i;
+
+ if (firstLumSrcY < 0 || firstLumSrcY + vLumFilterSize > c->srcH) {
+ const int16_t **tmpY = (const int16_t **) lumPixBuf + 2 * vLumBufSize;
+ int neg = -firstLumSrcY, i, end = FFMIN(c->srcH - firstLumSrcY, vLumFilterSize);
+ for (i = 0; i < neg; i++)
+ tmpY[i] = lumSrcPtr[neg];
+ for ( ; i < end; i++)
+ tmpY[i] = lumSrcPtr[i];
+ for ( ; i < vLumFilterSize; i++)
+ tmpY[i] = tmpY[i-1];
+ lumSrcPtr = tmpY;
+
+ if (alpSrcPtr) {
+ const int16_t **tmpA = (const int16_t **) alpPixBuf + 2 * vLumBufSize;
+ for (i = 0; i < neg; i++)
+ tmpA[i] = alpSrcPtr[neg];
+ for ( ; i < end; i++)
+ tmpA[i] = alpSrcPtr[i];
+ for ( ; i < vLumFilterSize; i++)
+ tmpA[i] = tmpA[i - 1];
+ alpSrcPtr = tmpA;
+ }
+ }
+ if (firstChrSrcY < 0 || firstChrSrcY + vChrFilterSize > c->chrSrcH) {
+ const int16_t **tmpU = (const int16_t **) chrUPixBuf + 2 * vChrBufSize;
+ int neg = -firstChrSrcY, i, end = FFMIN(c->chrSrcH - firstChrSrcY, vChrFilterSize);
+ for (i = 0; i < neg; i++) {
+ tmpU[i] = chrUSrcPtr[neg];
+ }
+ for ( ; i < end; i++) {
+ tmpU[i] = chrUSrcPtr[i];
+ }
+ for ( ; i < vChrFilterSize; i++) {
+ tmpU[i] = tmpU[i - 1];
+ }
+ chrUSrcPtr = tmpU;
+ }
+
if (flags & SWS_ACCURATE_RND) {
int s= APCK_SIZE / 8;
for (i=0; i<vLumFilterSize; i+=2) {
SwsContext *c, int16_t *data, \
int dstW, const uint8_t *src, \
const int16_t *filter, \
- const int16_t *filterPos, int filterSize)
+ const int32_t *filterPos, int filterSize)
#define SCALE_FUNCS(filter_n, opt) \
SCALE_FUNC(filter_n, 8, 15, opt); \