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swscale/format: don't mark single byte formats as byte swapped

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Fixes a bug where all format lists contained redundant byte swapped
annotations on big-endian platforms, even for single-byte formats.
This commit is contained in:
Niklas Haas
2026-02-20 16:59:07 +01:00
committed by Niklas Haas
parent 86ddc8b438
commit 4e36265dea
1 changed files with 4 additions and 2 deletions
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6
libswscale/format.c
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@@ -936,7 +936,8 @@ int ff_sws_decode_pixfmt(SwsOpList *ops, enum AVPixelFormat fmt)
/* Set baseline pixel content flags */
const int integer = ff_sws_pixel_type_is_int(raw_type);
const int swapped = (desc->flags & AV_PIX_FMT_FLAG_BE) != NATIVE_ENDIAN_FLAG;
const int swapped = ff_sws_pixel_type_size(raw_type) > 1 &&
(desc->flags & AV_PIX_FMT_FLAG_BE) != NATIVE_ENDIAN_FLAG;
for (int i = 0; i < rw_op.elems; i++) {
comps->flags[i] = (integer ? SWS_COMP_EXACT : 0) |
(swapped ? SWS_COMP_SWAPPED : 0);
@@ -1057,7 +1058,8 @@ int ff_sws_encode_pixfmt(SwsOpList *ops, enum AVPixelFormat fmt)
}));
}
if ((desc->flags & AV_PIX_FMT_FLAG_BE) != NATIVE_ENDIAN_FLAG) {
if (ff_sws_pixel_type_size(raw_type) > 1 &&
(desc->flags & AV_PIX_FMT_FLAG_BE) != NATIVE_ENDIAN_FLAG) {
RET(ff_sws_op_list_append(ops, &(SwsOp) {
.op = SWS_OP_SWAP_BYTES,
.type = raw_type,