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Add conversion from float to fixed-point i16

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To encode float values between -1 and 1.

PR #3369 <https://github.com/Genymobile/scrcpy/pull/3369>
This commit is contained in:
Romain Vimont 2022-08-03 13:04:15 +02:00
commit 1f138aef41
4 changed files with 68 additions and 0 deletions
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20
app/tests/test_binary.c
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@ -78,6 +78,25 @@ static void test_float_to_u16fp(void) {
assert(sc_float_to_u16fp(1.0f) == 0xffff);
}
static void test_float_to_i16fp(void) {
assert(sc_float_to_i16fp(0.0f) == 0);
assert(sc_float_to_i16fp(0.03125f) == 0x400);
assert(sc_float_to_i16fp(0.0625f) == 0x800);
assert(sc_float_to_i16fp(0.125f) == 0x1000);
assert(sc_float_to_i16fp(0.25f) == 0x2000);
assert(sc_float_to_i16fp(0.5f) == 0x4000);
assert(sc_float_to_i16fp(0.75f) == 0x6000);
assert(sc_float_to_i16fp(1.0f) == 0x7fff);
assert(sc_float_to_i16fp(-0.03125f) == -0x400);
assert(sc_float_to_i16fp(-0.0625f) == -0x800);
assert(sc_float_to_i16fp(-0.125f) == -0x1000);
assert(sc_float_to_i16fp(-0.25f) == -0x2000);
assert(sc_float_to_i16fp(-0.5f) == -0x4000);
assert(sc_float_to_i16fp(-0.75f) == -0x6000);
assert(sc_float_to_i16fp(-1.0f) == -0x8000);
}
int main(int argc, char *argv[]) {
(void) argc;
(void) argv;
@ -90,5 +109,6 @@ int main(int argc, char *argv[]) {
test_read64be();
test_float_to_u16fp();
test_float_to_i16fp();
return 0;
}