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swscale-example: Make selection of dstW, dstH, and flags more clear.

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Originally committed as revision 29527 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Ramiro Polla
2009-08-17 02:06:00 +00:00
parent 0cc4701a3a
commit 6b052ba88f
1 changed files with 12 additions and 8 deletions
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20
libswscale/swscale-example.c
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@ -182,12 +182,18 @@ static int doTest(uint8_t *ref[4], int refStride[4], int w, int h, int srcFormat
static void selfTest(uint8_t *src[4], int stride[4], int w, int h) static void selfTest(uint8_t *src[4], int stride[4], int w, int h)
{ {
const int flags[] = { SWS_FAST_BILINEAR,
SWS_BILINEAR, SWS_BICUBIC,
SWS_X , SWS_POINT , SWS_AREA, 0 };
const int srcW = w;
const int srcH = h;
const int dstW[] = { srcW - srcW/3, srcW, srcW + srcW/3, 0 };
const int dstH[] = { srcH - srcH/3, srcH, srcH + srcH/3, 0 };
enum PixelFormat srcFormat, dstFormat; enum PixelFormat srcFormat, dstFormat;
int srcW, srcH, dstW, dstH;
int flags;
for (srcFormat = 0; srcFormat < PIX_FMT_NB; srcFormat++) { for (srcFormat = 0; srcFormat < PIX_FMT_NB; srcFormat++) {
for (dstFormat = 0; dstFormat < PIX_FMT_NB; dstFormat++) { for (dstFormat = 0; dstFormat < PIX_FMT_NB; dstFormat++) {
int i, j, k;
int res = 0; int res = 0;
printf("%s -> %s\n", printf("%s -> %s\n",
@ -195,13 +201,11 @@ static void selfTest(uint8_t *src[4], int stride[4], int w, int h)
sws_format_name(dstFormat)); sws_format_name(dstFormat));
fflush(stdout); fflush(stdout);
srcW= w; for (i = 0; dstW[i] && !res; i++)
srcH= h; for (j = 0; dstH[j] && !res; j++)
for (dstW=w - w/3; !res && dstW<= 4*w/3; dstW+= w/3) for (k = 0; flags[k] && !res; k++)
for (dstH=h - h/3; !res && dstH<= 4*h/3; dstH+= h/3)
for (flags=1; !res && flags<33; flags*=2)
res = doTest(src, stride, w, h, srcFormat, dstFormat, res = doTest(src, stride, w, h, srcFormat, dstFormat,
srcW, srcH, dstW, dstH, flags); srcW, srcH, dstW[i], dstH[j], flags[k]);
} }
} }
} }