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avcodec/adpcm: mark conditionally used frame locals as unused

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GCC 14.4.0 and 16.2.1 report -Wunused-variable and
-Wunused-but-set-variable warnings in adpcm_decode_frame with
single-decoder configurations such as adpcm_xa, adpcm_swf, adpcm_sanyo
and adpcm_ima_citrix. Reads of shared locals disappear when their
CASE blocks are disabled.

Mark c, samples, samples_p and st as av_unused to suppress both
warnings for any subset of enabled decoders without changing behavior.

Signed-off-by: lusoris <lusoris@proton.me>
This commit is contained in:
lusoris authored and Peter Ross committed 2026-11-02 21:05:10 +00:00
1 parent ccdf3805cf
commit f675c507e2
1 file changed
+4 -4
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libavcodec/adpcm.c
+4 -4
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@@ -1545,11 +1545,11 @@ static int adpcm_decode_frame(AVCodecContext *avctx, AVFrame *frame,
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
ADPCMDecodeContext *c = avctx->priv_data;
av_unused ADPCMDecodeContext *c = avctx->priv_data;
int channels = avctx->ch_layout.nb_channels;
int16_t *samples;
int16_t **samples_p;
int st; /* stereo */
av_unused int16_t *samples;
av_unused int16_t **samples_p;
av_unused int st; /* stereo */
int nb_samples, coded_samples, approx_nb_samples, ret;
GetByteContext gb;