dds: limit 4 bpp handling to AV_PIX_FMT_PAL8
This fixes NULL pointer dereferencing for formats, where frame->data[1]
is not allocated.
The problem was introduced in commit
257fbc3af4cba08ac471dab68924182160bde6fd.
Reviewed-by: Paul B Mahol <[email protected]>
Signed-off-by: Andreas Cadhalpun <[email protected]>
diff --git a/libavcodec/dds.c b/libavcodec/dds.c
index 43319a8..fa0f34d 100644
--- a/libavcodec/dds.c
+++ b/libavcodec/dds.c
@@ -680,7 +680,7 @@
/* Use the decompress function on the texture, one block per thread. */
ctx->tex_data = gbc->buffer;
avctx->execute2(avctx, decompress_texture_thread, frame, NULL, ctx->slice_count);
- } else if (!ctx->paletted && ctx->bpp == 4) {
+ } else if (!ctx->paletted && ctx->bpp == 4 && avctx->pix_fmt == AV_PIX_FMT_PAL8) {
uint8_t *dst = frame->data[0];
int x, y, i;
