- clear the front buffer with color 0 when a new frame starts.
Fixes a lot of Rebel Assault 1 videos and Rebel Assault 2 space
scenes (e.g. 08PLAY.SAN which consists only of codec1+21 objects
which only ever touch parts of the buffer).
- for ANIMv1 (Rebel Assault 1): set palette index 0 to all zeroes.
This fixes a lot of unwanted colors in e.g L1HANGAR.ANM, L2INTRO.ANM,
a space scenes.
Signed-off-by: Manuel Lauss <manuel.la...@gmail.com>
---
libavcodec/sanm.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/libavcodec/sanm.c b/libavcodec/sanm.c
index 310b1a429b..efed31b70c 100644
--- a/libavcodec/sanm.c
+++ b/libavcodec/sanm.c
@@ -1350,6 +1350,8 @@ static int process_xpal(SANMVideoContext *ctx, int size)
if (size >= PALETTE_DELTA * 2 + 4 + PALETTE_SIZE * 3) {
for (i = 0; i < PALETTE_SIZE; i++)
ctx->pal[i] = 0xFFU << 24 | bytestream2_get_be24u(&ctx->gb);
+ if (ctx->subversion < 2)
+ ctx->pal[0] = 0;
}
}
return 0;
@@ -1765,6 +1767,10 @@ static int decode_frame(AVCodecContext *avctx, AVFrame
*frame,
if (!ctx->version) {
int to_store = 0;
+ /* clear the front buffer */
+ if (ctx->frm0_size)
+ memset(ctx->frm0, 0, ctx->frm0_size);
+
while (bytestream2_get_bytes_left(&ctx->gb) >= 8) {
uint32_t sig, size;
int pos;
@@ -1786,6 +1792,8 @@ static int decode_frame(AVCodecContext *avctx, AVFrame
*frame,
}
for (i = 0; i < PALETTE_SIZE; i++)
ctx->pal[i] = 0xFFU << 24 |
bytestream2_get_be24u(&ctx->gb);
+ if (ctx->subversion < 2)
+ ctx->pal[0] = 0;
break;
case MKBETAG('F', 'O', 'B', 'J'):
if (size < 16)
--
2.48.1
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