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Diffstat (limited to 'src/xine-utils/xineutils.h')
| -rw-r--r-- | src/xine-utils/xineutils.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/xine-utils/xineutils.h b/src/xine-utils/xineutils.h index 5b16e6e3c..cbf88aeaf 100644 --- a/src/xine-utils/xineutils.h +++ b/src/xine-utils/xineutils.h @@ -291,6 +291,9 @@ extern void (*yuy2_to_yv12) #define SCALEFACTOR 65536 #define CENTERSAMPLE 128 +/* These conversions are normalised for the MPEG Y'CbCr colourspace. + * (Yes, we know that we call it YUV elsewhere.) + */ #define COMPUTE_Y(r, g, b) \ (unsigned char) \ ((y_r_table[r] + y_g_table[g] + y_b_table[b]) / SCALEFACTOR) |