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avcodec/scpr3: Avoid code duplication when updating models 

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
This commit is contained in:
Andreas Rheinhardt 2021-02-13 11:39:12 +01:00
parent cff09fee1f
commit 84bb18d4e7
1 changed files with 4 additions and 20 deletions
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24
libavcodec/scpr3.c
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@ -524,32 +524,16 @@ static int update_model1_to_4(PixelModel3 *m, uint32_t val)
static int update_model1_to_5(PixelModel3 *m, uint32_t val)
{
PixelModel3 n = {0};
int i, size, freqs;
uint32_t a;
update_model1_to_4(m, val);
size = m->size;
n.size = size;
for (i = 0; i < size; i++) {
n.symbols[i] = m->symbols[i];
}
AV_QSORT(n.symbols, size, uint8_t, cmpbytes);
size = n.size;
for (i = 0; i < size; i++) {
if (val == n.symbols[i]) {
n.freqs[i] = 100;
n.maxpos = i;
} else {
n.freqs[i] = 50;
}
}
a = 256 - size;
for (i = 0; i < size; i++, a += freqs)
freqs = n.freqs[i];
n.type = 5;
n.cntsum = a;
memcpy(m, &n, sizeof(n));
freqs = m->freqs[i];
m->type = 5;
m->cntsum = a;
return 0;
}