[FFmpeg-cvslog] dds: Fix palette decoding

Vittorio Giovara git at videolan.org
Wed Jul 22 17:39:45 CEST 2015


ffmpeg | branch: master | Vittorio Giovara <vittorio.giovara at gmail.com> | Mon Jul 20 23:47:12 2015 +0100| [57214b2f7f9b1ccfd61e232e8989b5ee850f169c] | committer: Vittorio Giovara

dds: Fix palette decoding

Red and blue channels were decoded in the wrong order.

Found-By: ami_stuff

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=57214b2f7f9b1ccfd61e232e8989b5ee850f169c
---

 libavcodec/dds.c           |   10 +++++++---
 tests/ref/fate/dds-pal     |    2 +-
 tests/ref/fate/dds-pal-ati |    2 +-
 3 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/libavcodec/dds.c b/libavcodec/dds.c
index d259b5e..85d85fd 100644
--- a/libavcodec/dds.c
+++ b/libavcodec/dds.c
@@ -645,11 +645,15 @@ static int dds_decode(AVCodecContext *avctx, void *data,
 
         if (ctx->paletted) {
             int i;
-            uint32_t *p = (uint32_t *)frame->data[1];
+            uint8_t *p = frame->data[1];
 
             /* Use the first 1024 bytes as palette, then copy the rest. */
-            for (i = 0; i < 256; i++)
-                p[i] = bytestream2_get_le32(gbc);
+            for (i = 0; i < 256; i++) {
+                p[i * 4 + 2] = bytestream2_get_byte(gbc);
+                p[i * 4 + 1] = bytestream2_get_byte(gbc);
+                p[i * 4 + 0] = bytestream2_get_byte(gbc);
+                p[i * 4 + 3] = bytestream2_get_byte(gbc);
+            }
 
             frame->palette_has_changed = 1;
         }
diff --git a/tests/ref/fate/dds-pal b/tests/ref/fate/dds-pal
index 8541441..575a4bd 100644
--- a/tests/ref/fate/dds-pal
+++ b/tests/ref/fate/dds-pal
@@ -1,2 +1,2 @@
 #tb 0: 1/25
-0,          0,          0,        1,    65536, 0xbffee5cd
+0,          0,          0,        1,    65536, 0x4287e5cd
diff --git a/tests/ref/fate/dds-pal-ati b/tests/ref/fate/dds-pal-ati
index 6b43bb4..6de8adb 100644
--- a/tests/ref/fate/dds-pal-ati
+++ b/tests/ref/fate/dds-pal-ati
@@ -1,2 +1,2 @@
 #tb 0: 1/25
-0,          0,          0,        1,    16384, 0x23068060
+0,          0,          0,        1,    16384, 0x6ac18060



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