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audioconvert: improve noise shaping

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Reorganize things a little so we can add more noise shapers.
Add sloped triangular noise.
Add wanamaker3 noise shaping.
This commit is contained in:
Wim Taymans 2022-07-15 12:36:15 +02:00
parent 7151150802
commit a4db745a7e
6 changed files with 272 additions and 171 deletions
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4
spa/plugins/audioconvert/test-fmt-ops.c
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@ -656,7 +656,7 @@ static void run_test_noise(uint32_t fmt, uint32_t noise, uint32_t flags)
spa_zero(conv);
conv.noise = noise;
conv.noise_bits = noise;
conv.src_fmt = SPA_AUDIO_FORMAT_F32P;
conv.dst_fmt = fmt;
conv.n_channels = 2;
@ -672,7 +672,7 @@ static void run_test_noise(uint32_t fmt, uint32_t noise, uint32_t flags)
}
convert_process(&conv, op, ip, N_SAMPLES);
range = 1 << conv.noise;
range = 1 << conv.noise_bits;
all_zero = true;
for (i = 0; i < conv.n_channels * N_SAMPLES; i++) {