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swscale: add unscaled packed 16 bit per component endianess conversion

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This commit is contained in:
Janne Grunau 2011-12-16 00:44:26 +01:00
parent d3b8bde2f1
commit 72cb904453
1 changed files with 30 additions and 0 deletions
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30
libswscale/swscale_unscaled.c
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@ -252,6 +252,27 @@ static void gray8aToPacked24(const uint8_t *src, uint8_t *dst, int num_pixels, c
}
}
static int packed_16bpc_bswap(SwsContext *c, const uint8_t* src[],
int srcStride[], int srcSliceY, int srcSliceH,
uint8_t* dst[], int dstStride[])
{
int i, j;
int srcstr = srcStride[0] >> 1;
int dststr = dstStride[0] >> 1;
uint16_t *dstPtr = (uint16_t *)dst[0];
const uint16_t *srcPtr = (const uint16_t *)src[0];
for (i = 0; i < srcSliceH; i++) {
for (j = 0; j < srcstr; j++) {
dstPtr[j] = av_bswap16(srcPtr[j]);
}
srcPtr += srcstr;
dstPtr += dststr;
}
return srcSliceH;
}
static int palToRgbWrapper(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
int srcSliceH, uint8_t* dst[], int dstStride[])
{
@ -697,6 +718,15 @@ void ff_get_unscaled_swscale(SwsContext *c)
if (srcFormat==PIX_FMT_BGR24 && (dstFormat==PIX_FMT_YUV420P || dstFormat==PIX_FMT_YUVA420P) && !(flags & SWS_ACCURATE_RND))
c->swScale= bgr24ToYv12Wrapper;
/* bswap 16 bits per component packed formats */
if ((srcFormat == PIX_FMT_RGB48LE && dstFormat == PIX_FMT_RGB48BE) ||
(srcFormat == PIX_FMT_RGB48BE && dstFormat == PIX_FMT_RGB48LE) ||
(srcFormat == PIX_FMT_BGR48LE && dstFormat == PIX_FMT_BGR48BE) ||
(srcFormat == PIX_FMT_BGR48BE && dstFormat == PIX_FMT_BGR48LE) ||
(srcFormat == PIX_FMT_GRAY16LE && dstFormat == PIX_FMT_GRAY16BE) ||
(srcFormat == PIX_FMT_GRAY16BE && dstFormat == PIX_FMT_GRAY16LE))
c->swScale = packed_16bpc_bswap;
/* RGB/BGR -> RGB/BGR (no dither needed forms) */
if ( isAnyRGB(srcFormat)
&& isAnyRGB(dstFormat)