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| author | dinoex <dinoex@FreeBSD.org> | 2004-11-16 12:14:25 +0800 |
|---|---|---|
| committer | dinoex <dinoex@FreeBSD.org> | 2004-11-16 12:14:25 +0800 |
| commit | 0a24433fd9d9090aeb6aeb6318afc2555cb78199 (patch) | |
| tree | afb25abfa6e54c18c1ab7ab103589edb546e2d51 /graphics/tiff/files | |
| parent | f8d87decab007a9fea6728bdd5d4f0658ffa9d62 (diff) | |
| download | freebsd-ports-gnome-0a24433fd9d9090aeb6aeb6318afc2555cb78199.tar.gz freebsd-ports-gnome-0a24433fd9d9090aeb6aeb6318afc2555cb78199.tar.zst freebsd-ports-gnome-0a24433fd9d9090aeb6aeb6318afc2555cb78199.zip | |
- bugfix in YCbCr support
some tables were initialized with wrong value
missing check for division by zero
Submitted by: Hans Petter Selasky
Diffstat (limited to 'graphics/tiff/files')
| -rw-r--r-- | graphics/tiff/files/patch-tif_color.c | 43 | ||||
| -rw-r--r-- | graphics/tiff/files/patch-tiff2ps.c (renamed from graphics/tiff/files/patch-float) | 0 |
2 files changed, 43 insertions, 0 deletions
diff --git a/graphics/tiff/files/patch-tif_color.c b/graphics/tiff/files/patch-tif_color.c new file mode 100644 index 000000000000..9288d85ff565 --- /dev/null +++ b/graphics/tiff/files/patch-tif_color.c @@ -0,0 +1,43 @@ +*** libtiff/tif_color.c.ref Fri Nov 5 18:01:44 2004 +--- libtiff/tif_color.c Fri Nov 5 18:26:46 2004 +*************** +*** 170,176 **** + #define SHIFT 16 + #define FIX(x) ((int32)((x) * (1L<<SHIFT) + 0.5)) + #define ONE_HALF ((int32)(1<<(SHIFT-1))) +! #define Code2V(c, RB, RW, CR) ((((c)-(int32)(RB))*(float)(CR))/(float)((RW)-(RB))) + #define CLAMP(f,min,max) ((f)<(min)?(min):(f)>(max)?(max):(f)) + + void +--- 170,176 ---- + #define SHIFT 16 + #define FIX(x) ((int32)((x) * (1L<<SHIFT) + 0.5)) + #define ONE_HALF ((int32)(1<<(SHIFT-1))) +! #define Code2V(c, RB, RW, CR) ((((c)-(int32)(RB))*(float)(CR))/(float)(((RW)-(RB)) ? ((RW)-(RB)) : 1)) + #define CLAMP(f,min,max) ((f)<(min)?(min):(f)>(max)?(max):(f)) + + void +*************** +*** 243,252 **** + * constructing tables indexed by the raw pixel data. + */ + for (i = 0, x = -128; i < 256; i++, x++) { +! int32 Cr = (int32)Code2V(x, refBlackWhite[4] - 128.0F, +! refBlackWhite[5] - 128.0F, 127); +! int32 Cb = (int32)Code2V(x, refBlackWhite[2] - 128.0F, +! refBlackWhite[3] - 128.0F, 127); + + ycbcr->Cr_r_tab[i] = (int32)((D1*Cr + ONE_HALF)>>SHIFT); + ycbcr->Cb_b_tab[i] = (int32)((D3*Cb + ONE_HALF)>>SHIFT); +--- 243,252 ---- + * constructing tables indexed by the raw pixel data. + */ + for (i = 0, x = -128; i < 256; i++, x++) { +! int32 Cr = ((int32)Code2V(x, refBlackWhite[4] - 128.0F, +! refBlackWhite[5] - 128.0F, 255)) - 128; +! int32 Cb = ((int32)Code2V(x, refBlackWhite[2] - 128.0F, +! refBlackWhite[3] - 128.0F, 255)) - 128; + + ycbcr->Cr_r_tab[i] = (int32)((D1*Cr + ONE_HALF)>>SHIFT); + ycbcr->Cb_b_tab[i] = (int32)((D3*Cb + ONE_HALF)>>SHIFT); + diff --git a/graphics/tiff/files/patch-float b/graphics/tiff/files/patch-tiff2ps.c index 5178a026aa35..5178a026aa35 100644 --- a/graphics/tiff/files/patch-float +++ b/graphics/tiff/files/patch-tiff2ps.c |