diff options
Diffstat (limited to 'libswscale')
| -rw-r--r-- | libswscale/swscale_unscaled.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/libswscale/swscale_unscaled.c b/libswscale/swscale_unscaled.c index c391a07d51..9180f2eb5c 100644 --- a/libswscale/swscale_unscaled.c +++ b/libswscale/swscale_unscaled.c @@ -830,7 +830,34 @@ static int planarCopyWrapper(SwsContext *c, const uint8_t *src[], srcPtr += srcStride[plane]; } } else if (src_depth <= dst_depth) { + int orig_length = length; for (i = 0; i < height; i++) { + if(isBE(c->srcFormat) == HAVE_BIGENDIAN && + isBE(c->dstFormat) == HAVE_BIGENDIAN && + shiftonly) { + unsigned shift = dst_depth - src_depth; + length = orig_length; +#if HAVE_FAST_64BIT +#define FAST_COPY_UP(shift) \ + for (j = 0; j < length - 3; j += 4) { \ + uint64_t v = AV_RN64A(srcPtr2 + j); \ + AV_WN64A(dstPtr2 + j, v << shift); \ + } \ + length &= 3; +#else +#define FAST_COPY_UP(shift) \ + for (j = 0; j < length - 1; j += 2) { \ + uint32_t v = AV_RN32A(srcPtr2 + j); \ + AV_WN32A(dstPtr2 + j, v << shift); \ + } \ + length &= 1; +#endif + switch (shift) + { + case 6: FAST_COPY_UP(6); break; + case 7: FAST_COPY_UP(7); break; + } + } #define COPY_UP(r,w) \ if(shiftonly){\ for (j = 0; j < length; j++){ \ |