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Code Issues Releases Activity

avcodec/exr: Remove write-only gamma_table

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Forgotten in 0e917389fe.

Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt
2025-03-05 13:57:16 +01:00
parent 5560a20d77
commit 431805c096
1 changed files with 0 additions and 31 deletions
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31
libavcodec/exr.c
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@@ -190,7 +190,6 @@ typedef struct EXRContext {
enum AVColorTransferCharacteristic apply_trc_type; enum AVColorTransferCharacteristic apply_trc_type;
float gamma; float gamma;
union av_intfloat32 gamma_table[65536];
uint8_t *offset_table; uint8_t *offset_table;
@@ -2240,10 +2239,6 @@ static int decode_frame(AVCodecContext *avctx, AVFrame *picture,
static av_cold int decode_init(AVCodecContext *avctx) static av_cold int decode_init(AVCodecContext *avctx)
{ {
EXRContext *s = avctx->priv_data; EXRContext *s = avctx->priv_data;
uint32_t i;
union av_intfloat32 t;
float one_gamma = 1.0f / s->gamma;
av_csp_trc_function trc_func = NULL;
ff_init_half2float_tables(&s->h2f_tables); ff_init_half2float_tables(&s->h2f_tables);
@@ -2255,32 +2250,6 @@ static av_cold int decode_init(AVCodecContext *avctx)
ff_bswapdsp_init(&s->bbdsp); ff_bswapdsp_init(&s->bbdsp);
#endif #endif
trc_func = av_csp_trc_func_from_id(s->apply_trc_type);
if (trc_func) {
for (i = 0; i < 65536; ++i) {
t.i = half2float(i, &s->h2f_tables);
t.f = trc_func(t.f);
s->gamma_table[i] = t;
}
} else {
if (one_gamma > 0.9999f && one_gamma < 1.0001f) {
for (i = 0; i < 65536; ++i) {
s->gamma_table[i].i = half2float(i, &s->h2f_tables);
}
} else {
for (i = 0; i < 65536; ++i) {
t.i = half2float(i, &s->h2f_tables);
/* If negative value we reuse half value */
if (t.f <= 0.0f) {
s->gamma_table[i] = t;
} else {
t.f = powf(t.f, one_gamma);
s->gamma_table[i] = t;
}
}
}
}
// allocate thread data, used for non EXR_RAW compression types // allocate thread data, used for non EXR_RAW compression types
s->thread_data = av_calloc(avctx->thread_count, sizeof(*s->thread_data)); s->thread_data = av_calloc(avctx->thread_count, sizeof(*s->thread_data));
if (!s->thread_data) if (!s->thread_data)