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| author | Mattias Andrée <maandree@kth.se> | 2017-09-23 19:14:42 +0200 |
|---|---|---|
| committer | Mattias Andrée <maandree@kth.se> | 2017-09-23 19:14:42 +0200 |
| commit | 2b646382a5745b65d32e6bc66b9cf41149673c8c (patch) | |
| tree | 72f2eabe8614bb4ac7ae487ef0ddebff11809aff /src/blind-from-video.c | |
| parent | blind-to-video manpage: transparent videos (diff) | |
| download | blind-2b646382a5745b65d32e6bc66b9cf41149673c8c.tar.gz blind-2b646382a5745b65d32e6bc66b9cf41149673c8c.tar.bz2 blind-2b646382a5745b65d32e6bc66b9cf41149673c8c.tar.xz | |
Fix conversion of Y value
Signed-off-by: Mattias Andrée <maandree@kth.se>
Diffstat (limited to 'src/blind-from-video.c')
| -rw-r--r-- | src/blind-from-video.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/src/blind-from-video.c b/src/blind-from-video.c index 09e91a6..f258058 100644 --- a/src/blind-from-video.c +++ b/src/blind-from-video.c @@ -75,7 +75,7 @@ get_metadata(char *file, size_t *width, size_t *height) do {\ typedef TYPE pixel_t[4];\ size_t i, ptr;\ - TYPE y, u, v, max = (TYPE)UINT16_MAX;\ + TYPE y, u, v, max = (TYPE)UINT16_MAX, ymax = (TYPE)0xDAF4;\ TYPE r, g, b;\ pixel_t pixels[1024];\ uint16_t *pix;\ @@ -83,9 +83,9 @@ get_metadata(char *file, size_t *width, size_t *height) for (ptr = i = 0; ptr < n; ptr += 8) {\ pix = (uint16_t *)(buf + ptr);\ pixels[i][3] = 1;\ - y = (TYPE)((long int)(le16toh(pix[1])) - 16L * 256L);\ - u = (TYPE)((long int)(le16toh(pix[2])) - 128L * 256L);\ - v = (TYPE)((long int)(le16toh(pix[3])) - 128L * 256L);\ + y = (TYPE)((long int)(le16toh(pix[1])) - 0x1001L);\ + u = (TYPE)((long int)(le16toh(pix[2])) - 0x8000L);\ + v = (TYPE)((long int)(le16toh(pix[3])) - 0x8000L);\ scaled_yuv_to_ciexyz(y, u, v, pixels[i] + 0,\ pixels[i] + 1, pixels[i] + 2);\ if (++i == 1024) {\ @@ -97,9 +97,9 @@ get_metadata(char *file, size_t *width, size_t *height) for (ptr = i = 0; ptr < n; ptr += 8) {\ pix = (uint16_t *)(buf + ptr);\ pixels[i][3] = le16toh(pix[0]) / max;\ - y = (TYPE)((long int)le16toh(pix[1]) - 16L * 256L) / max;\ - u = (TYPE)((long int)le16toh(pix[2]) - 128L * 256L) / max;\ - v = (TYPE)((long int)le16toh(pix[3]) - 128L * 256L) / max;\ + y = (TYPE)((long int)le16toh(pix[1]) - 0x1001L) / ymax;\ + u = (TYPE)((long int)le16toh(pix[2]) - 0x8000L) / max;\ + v = (TYPE)((long int)le16toh(pix[3]) - 0x8000L) / max;\ yuv_to_srgb(y, u, v, &r, &g, &b);\ r = srgb_decode(r);\ g = srgb_decode(g);\ |