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-rw-r--r--src/vu-from-video.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/src/vu-from-video.c b/src/vu-from-video.c
index 92503bb..c780b55 100644
--- a/src/vu-from-video.c
+++ b/src/vu-from-video.c
@@ -112,9 +112,9 @@ convert_segment(char *buf, size_t n, int fd, char *file)
if (draft) {
for (ptr = i = 0; ptr < n; ptr += 8) {
pixels[i][3] = ntohs(((uint16_t *)(buf + ptr))[0]) / max;
- y = ntohs(((uint16_t *)(buf + ptr))[1]);
- u = ntohs(((uint16_t *)(buf + ptr))[2]);
- v = ntohs(((uint16_t *)(buf + ptr))[3]);
+ y = (ntohs(((uint16_t *)(buf + ptr))[1]) - 16 * 256);
+ u = (ntohs(((uint16_t *)(buf + ptr))[2]) - 128 * 256);
+ v = (ntohs(((uint16_t *)(buf + ptr))[3]) - 128 * 256);
scaled_yuv_to_ciexyz(y, u, v, pixels[i] + 0, pixels[i] + 1, pixels[i] + 2);
if (++i == 1024) {
i = 0;
@@ -124,9 +124,9 @@ convert_segment(char *buf, size_t n, int fd, char *file)
} else {
for (ptr = i = 0; ptr < n; ptr += 8) {
pixels[i][3] = ntohs(((uint16_t *)(buf + ptr))[0]) / max;
- y = ntohs(((uint16_t *)(buf + ptr))[1]) / max;
- u = ntohs(((uint16_t *)(buf + ptr))[2]) / max;
- v = ntohs(((uint16_t *)(buf + ptr))[3]) / max;
+ y = (ntohs(((uint16_t *)(buf + ptr))[1]) - 16 * 256) / max;
+ u = (ntohs(((uint16_t *)(buf + ptr))[2]) - 128 * 256) / max;
+ v = (ntohs(((uint16_t *)(buf + ptr))[3]) - 128 * 256) / max;
yuv_to_srgb(y, u, v, &r, &g, &b);
r = srgb_decode(r);
g = srgb_decode(g);