X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Ftexturedspenc.c;h=3d68e0cf39d988a48397249710b6ea0045a31916;hb=4c0a8ff0610c15cb1ceeca037d6b7c8fd3b2420a;hp=8b2863033b6a502732c56a7921e2dfb87896ab65;hpb=85e2fe6281834ac7f16a12a332d9de4b2ec3cd29;p=ffmpeg

diff --git a/libavcodec/texturedspenc.c b/libavcodec/texturedspenc.c
index 8b2863033b6..3d68e0cf39d 100644
--- a/libavcodec/texturedspenc.c
+++ b/libavcodec/texturedspenc.c
@@ -647,9 +647,26 @@ static int dxt5ys_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
     return 16;
 }
 
+/**
+ * Compress one block of RGBA pixels in a RGTC1U texture and store the
+ * resulting bytes in 'dst'. Use the alpha channel of the input image.
+ *
+ * @param dst    output buffer.
+ * @param stride scanline in bytes.
+ * @param block  block to compress.
+ * @return how much texture data has been written.
+ */
+static int rgtc1u_alpha_block(uint8_t *dst, ptrdiff_t stride, const uint8_t *block)
+{
+    compress_alpha(dst, stride, block);
+
+    return 8;
+}
+
 av_cold void ff_texturedspenc_init(TextureDSPContext *c)
 {
-    c->dxt1_block   = dxt1_block;
-    c->dxt5_block   = dxt5_block;
-    c->dxt5ys_block = dxt5ys_block;
+    c->dxt1_block         = dxt1_block;
+    c->dxt5_block         = dxt5_block;
+    c->dxt5ys_block       = dxt5ys_block;
+    c->rgtc1u_alpha_block = rgtc1u_alpha_block;
 }