Add ICC profile plumbing (via the colr box). This still needs YUV coeff harvesting to be correct
diff --git a/src/write.c b/src/write.c
index 675b6f4..e741a6b 100644
--- a/src/write.c
+++ b/src/write.c
@@ -205,6 +205,15 @@
ipmaPush(&ipmaColor, ipcoIndex); // ipma is 1-indexed, doing this afterwards is correct
ipmaPush(&ipmaAlpha, ipcoIndex); // Alpha shares the ispe prop
+ if ((image->profileFormat == AVIF_PROFILE_FORMAT_ICC) && image->icc.data && (image->icc.data > 0)) {
+ avifBoxMarker colr = avifStreamWriteBox(&s, "colr", -1, 0);
+ avifStreamWrite(&s, "prof", 4); // unsigned int(32) colour_type;
+ avifStreamWrite(&s, image->icc.data, image->icc.size);
+ avifStreamFinishBox(&s, colr);
+ ++ipcoIndex;
+ ipmaPush(&ipmaColor, ipcoIndex);
+ }
+
avifBoxMarker pixiC = avifStreamWriteBox(&s, "pixi", 0, 0);
avifStreamWriteU8(&s, 3); // unsigned int (8) num_channels;
avifStreamWriteU8(&s, image->depth); // unsigned int (8) bits_per_channel;
