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tests/checkasm/sw_ops: fix check_scale()

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This was not actually testing integer path. Additionally, for integer
scales, there is a special fast path for expansion from bits to full range,
which we should separate from the random value test.
This commit is contained in:
Niklas Haas
2026-04-12 15:45:26 +02:00
committed by Niklas Haas
parent e199d6b375
commit 80b86f0807
1 changed files with 11 additions and 3 deletions
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14
tests/checkasm/sw_ops.c
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@@ -799,13 +799,21 @@ static void check_linear(void)
static void check_scale(void)
{
for (SwsPixelType t = F32; t < SWS_PIXEL_TYPE_NB; t++) {
for (SwsPixelType t = U8; t < SWS_PIXEL_TYPE_NB; t++) {
const char *type = ff_sws_pixel_type_name(t);
const int bits = ff_sws_pixel_type_size(t) * 8;
if (ff_sws_pixel_type_is_int(t)) {
/* Ensure the result won't exceed the value range */
const unsigned max = (1 << bits) - 1;
const unsigned scale = rnd() & max;
/* Test fixed fast path for expansion from bits to full range */
CHECK_COMMON_RANGE(FMT("scale_full_%s", type), 1, t, t, {
.op = SWS_OP_SCALE,
.type = t,
.scale = {{ max, 1 }},
});
/* Ensure the result won't exceed the value range */
const unsigned scale = rnd() & (max >> 1);
const unsigned range = max / (scale ? scale : 1);
CHECK_COMMON_RANGE(FMT("scale_%s", type), range, t, t, {
.op = SWS_OP_SCALE,