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swscale-example: Check for Gray formats. 

Originally committed as revision 29503 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Ramiro Polla 2009-08-13 11:33:18 +00:00
parent d4d6ae1603
commit f5a9c4ee50
1 changed files with 9 additions and 3 deletions
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12
libswscale/swscale-example.c
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@ -32,6 +32,11 @@
/* HACK Duplicated from swscale_internal.h.
* Should be removed when a cleaner pixel format system exists. */
const char *sws_format_name(enum PixelFormat format);
#define isGray(x) ( \
(x)==PIX_FMT_GRAY8 \
|| (x)==PIX_FMT_GRAY16BE \
|| (x)==PIX_FMT_GRAY16LE \
)
#define isALPHA(x) ( \
(x)==PIX_FMT_BGR32 \
|| (x)==PIX_FMT_BGR32_1 \
@ -66,7 +71,7 @@ static int doTest(uint8_t *ref[4], int refStride[4], int w, int h, int srcFormat
uint8_t *out[4] = {0};
int srcStride[4], dstStride[4];
int i;
uint64_t ssdY, ssdU, ssdV, ssdA=0;
uint64_t ssdY, ssdU=0, ssdV=0, ssdA=0;
struct SwsContext *srcContext = NULL, *dstContext = NULL,
*outContext = NULL;
int res;
@ -134,13 +139,14 @@ static int doTest(uint8_t *ref[4], int refStride[4], int w, int h, int srcFormat
sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
if (!isGray(srcFormat) && !isGray(dstFormat)) {
//FIXME check that output is really gray
ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
}
if (isALPHA(srcFormat) && isALPHA(dstFormat))
ssdA= getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
if (srcFormat == PIX_FMT_GRAY8 || dstFormat==PIX_FMT_GRAY8) ssdU=ssdV=0; //FIXME check that output is really gray
ssdY/= w*h;
ssdU/= w*h/4;
ssdV/= w*h/4;