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From: Michael Niedermayer <michael@niedermayer.cc>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Date: Sat, 15 Mar 2025 01:00:03 +0100
Message-ID: <20250315000007.1601265-1-michael@niedermayer.cc>
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Subject: [FFmpeg-devel] [PATCH 1/5] avcodec/ffv1: fix remap without chroma
planes
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Sponsored-by: Sovereign Tech Fund
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
---
libavcodec/ffv1dec.c | 3 +--
libavcodec/ffv1enc.c | 3 +--
2 files changed, 2 insertions(+), 4 deletions(-)
diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c
index e534583d8d6..d702e36625a 100644
--- a/libavcodec/ffv1dec.c
+++ b/libavcodec/ffv1dec.c
@@ -252,10 +252,9 @@ static void slice_set_damaged(FFV1Context *f, FFV1SliceContext *sc)
static int decode_remap(FFV1Context *f, FFV1SliceContext *sc)
{
- int transparency = f->transparency;
int flip = sc->remap == 2 ? 0x7FFF : 0;
- for (int p= 0; p<3 + transparency; p++) {
+ for (int p= 0; p < 1 + 2*f->chroma_planes + f->transparency; p++) {
int j = 0;
int lu = 0;
uint8_t state[2][32];
diff --git a/libavcodec/ffv1enc.c b/libavcodec/ffv1enc.c
index 5d3daef15ec..b8ccda469ec 100644
--- a/libavcodec/ffv1enc.c
+++ b/libavcodec/ffv1enc.c
@@ -1159,10 +1159,9 @@ static void choose_rct_params(const FFV1Context *f, FFV1SliceContext *sc,
static void encode_remap(FFV1Context *f, FFV1SliceContext *sc)
{
- int transparency = f->transparency;
int flip = sc->remap == 2 ? 0x7FFF : 0;
- for (int p= 0; p<3 + transparency; p++) {
+ for (int p= 0; p < 1 + 2*f->chroma_planes + f->transparency; p++) {
int j = 0;
int lu = 0;
uint8_t state[2][32];
--
2.48.1
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