[FFmpeg-devel] [PATCH] avcodec/prores_raw: Reuse permutation (PR #20918)

[mkver via ffmpeg-devel <ffmpeg-devel@ffmpeg.org>]

PR #20918 opened by mkver
URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20918
Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20918.patch

The ProresDSPContext already contains the idct_permutation.

Seems like the raw code has been branched of before February (before deee2fb52d4ae0fe2a0cf1698a200ab02e3a9741).


>From 9ef362489266e92c8d14bca2f0b9c9b40737bf30 Mon Sep 17 00:00:00 2001
From: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Date: Fri, 14 Nov 2025 12:31:11 +0100
Subject: [PATCH] avcodec/prores_raw: Reuse permutation

The ProresDSPContext already contains the idct_permutation.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
---
 libavcodec/prores_raw.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/libavcodec/prores_raw.c b/libavcodec/prores_raw.c
index 65e0576619..9bc76da698 100644
--- a/libavcodec/prores_raw.c
+++ b/libavcodec/prores_raw.c
@@ -43,7 +43,6 @@
 static av_cold int decode_init(AVCodecContext *avctx)
 {
     ProResRAWContext *s = avctx->priv_data;
-    uint8_t idct_permutation[64];
 
     avctx->bits_per_raw_sample = 12;
     avctx->color_primaries = AVCOL_PRI_UNSPECIFIED;
@@ -55,10 +54,7 @@ static av_cold int decode_init(AVCodecContext *avctx)
     ff_blockdsp_init(&s->bdsp);
     ff_proresdsp_init(&s->prodsp, avctx->bits_per_raw_sample);
 
-    ff_init_scantable_permutation(idct_permutation,
-                                  s->prodsp.idct_permutation_type);
-
-    ff_permute_scantable(s->scan, ff_prores_interlaced_scan, idct_permutation);
+    ff_permute_scantable(s->scan, ff_prores_interlaced_scan, s->prodsp.idct_permutation);
 
     return 0;
 }
-- 
2.49.1

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