[FFmpeg-devel] [PATCH 1/3] swscale: don't assign range converters for float

From: Niklas Haas <ffmpeg@haasn.xyz>
To: ffmpeg-devel@ffmpeg.org
Cc: Niklas Haas <git@haasn.dev>
Subject: [FFmpeg-devel] [PATCH 1/3] swscale: don't assign range converters for float
Date: Mon, 13 Nov 2023 16:32:32 +0100
Message-ID: <20231113153234.8812-1-ffmpeg@haasn.xyz> (raw)

From: Niklas Haas <git@haasn.dev>

This logic was incongruent with logic used elsewhere, where floating
point formats are explicitly exempted from range conversion. Fixes an
issue where floating point formats were not going through special
unscaled converters even when it was otherwise possible.
---
 libswscale/swscale.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index 46ba68fe6a..a66db22767 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -534,7 +534,8 @@ av_cold void ff_sws_init_range_convert(SwsContext *c)
 {
     c->lumConvertRange = NULL;
     c->chrConvertRange = NULL;
-    if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) {
+    if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat) &&
+        !isFloat(c->srcFormat) && !isFloat(c->dstFormat)) {
         if (c->dstBpc <= 14) {
             if (c->srcRange) {
                 c->lumConvertRange = lumRangeFromJpeg_c;
-- 
2.42.0

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