diff options
Diffstat (limited to 'plugins/AdvaImg/src/LibJPEG/jdmerge.c')
| -rw-r--r-- | plugins/AdvaImg/src/LibJPEG/jdmerge.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/plugins/AdvaImg/src/LibJPEG/jdmerge.c b/plugins/AdvaImg/src/LibJPEG/jdmerge.c index 9e3a595de0..605e858cbd 100644 --- a/plugins/AdvaImg/src/LibJPEG/jdmerge.c +++ b/plugins/AdvaImg/src/LibJPEG/jdmerge.c @@ -2,6 +2,7 @@ * jdmerge.c
*
* Copyright (C) 1994-1996, Thomas G. Lane.
+ * Modified 2013 by Guido Vollbeding.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@@ -103,17 +104,17 @@ build_ycc_rgb_table (j_decompress_ptr cinfo) for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) {
/* i is the actual input pixel value, in the range 0..MAXJSAMPLE */
/* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */
- /* Cr=>R value is nearest int to 1.40200 * x */
+ /* Cr=>R value is nearest int to 1.402 * x */
upsample->Cr_r_tab[i] = (int)
- RIGHT_SHIFT(FIX(1.40200) * x + ONE_HALF, SCALEBITS);
- /* Cb=>B value is nearest int to 1.77200 * x */
+ RIGHT_SHIFT(FIX(1.402) * x + ONE_HALF, SCALEBITS);
+ /* Cb=>B value is nearest int to 1.772 * x */
upsample->Cb_b_tab[i] = (int)
- RIGHT_SHIFT(FIX(1.77200) * x + ONE_HALF, SCALEBITS);
- /* Cr=>G value is scaled-up -0.71414 * x */
- upsample->Cr_g_tab[i] = (- FIX(0.71414)) * x;
- /* Cb=>G value is scaled-up -0.34414 * x */
+ RIGHT_SHIFT(FIX(1.772) * x + ONE_HALF, SCALEBITS);
+ /* Cr=>G value is scaled-up -0.714136286 * x */
+ upsample->Cr_g_tab[i] = (- FIX(0.714136286)) * x;
+ /* Cb=>G value is scaled-up -0.344136286 * x */
/* We also add in ONE_HALF so that need not do it in inner loop */
- upsample->Cb_g_tab[i] = (- FIX(0.34414)) * x + ONE_HALF;
+ upsample->Cb_g_tab[i] = (- FIX(0.344136286)) * x + ONE_HALF;
}
}
|