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#include "pke-at-common.hpp"
#include "pke-at-settings.hpp"
#include "pke/audio-types.hpp"
void pke_at_bpm_reset(uint8_t bpm) {
g_at.bpm.last = bpm;
g_at.bpm.target = bpm;
g_at.bpm.current = bpm;
g_at.bpm.lerp_delta = 0.f;
g_at.bpm.lerp_delta_duration = 0.f;
g_at.bpm.delta_per_beat = 60.f / (double)bpm;
g_at.bpm.delta_since_last_beat = 0.f;
g_at.mtrnm.beat = 0;
g_at.mtrnm.beats_per_bar = 4;
}
AssetHandle pke_at_audio_get_or_generate_sawtooth(double pitch_freq, double duration) {
uint32_t u;
uint32_t len;
float *bytes;
float phase;
float phase_increment;
pke_asset_details details{};
AssetHandle handle;
AssetKey key;
snprintf(key, AssetKeyLength, "saw%.5u;%.2f", (uint32_t)pitch_freq, duration);
fprintf(stdout, "sawtooth: %s%c\n", key, '\0');
handle = AM_GetHandle(key);
if (handle != AssetHandle_MAX) {
return handle;
}
len = std::ceil(PKE_AUDIO_BITRATE * duration);
bytes = pk_new_arr<float>(len, g_at.mem.bkt_transient);
if (bytes == nullptr) {
throw "[pke_at_audio_get_or_generate_sawtooth] failed to alloc";
}
phase = 0.0f;
phase_increment = pitch_freq / float(PKE_AUDIO_BITRATE);
for (u = 0; u < len; ++u) {
bytes[u] = 2.f * (phase - floor(phase + 0.5f));
phase += phase_increment;
if (phase >= 1.f) phase -= 1.f;
}
// TODO
// details.audio.
handle = AM_Register(key, PKE_ASSET_TYPE_AUDIO, bytes, len, 64, &details);
return handle;
}
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