forked from LeenkxTeam/LNXSDK
98 lines
2.8 KiB
Haxe
98 lines
2.8 KiB
Haxe
package kha;
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import haxe.io.Bytes;
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import haxe.io.BytesOutput;
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import kha.audio2.ogg.vorbis.Reader;
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/**
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* Contains compressed or uncompressed audio data.
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*/
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@:cppFileCode("\n#define STB_VORBIS_HEADER_ONLY\n#include <kinc/libs/stb_vorbis.c>")
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class Sound implements Resource {
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public var compressedData: Bytes;
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public var uncompressedData: kha.arrays.Float32Array;
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public var length: Float = 0; // in seconds
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public var channels: Int = 0;
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public var sampleRate: Int = 0;
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public function new() {}
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#if kha_kore
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public function uncompress(done: Void->Void): Void {
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if (uncompressedData != null) {
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done();
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return;
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}
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var samples: Int = 0;
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var channels: Int = 0;
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var samplesPerSecond: Int = 0;
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untyped __cpp__("int16_t *data = nullptr");
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untyped __cpp__("samples = stb_vorbis_decode_memory((uint8_t*)compressedData->b->GetBase(), compressedData->length, &channels, &samplesPerSecond, &data)");
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if (channels == 1) {
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length = samples / samplesPerSecond;
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uncompressedData = new kha.arrays.Float32Array(samples * 2);
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for (i in 0...samples) {
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untyped __cpp__("*((float*)&this->uncompressedData->self.data[({0} * 2) * 4]) = data[{0}] / 32767.0f", i);
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untyped __cpp__("*((float*)&this->uncompressedData->self.data[({0} * 2 + 1) * 4]) = data[{0}] / 32767.0f", i);
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}
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}
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else {
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length = samples / samplesPerSecond;
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samples *= channels;
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uncompressedData = new kha.arrays.Float32Array(samples);
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for (i in 0...samples) {
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untyped __cpp__("*((float*)&this->uncompressedData->self.data[{0} * 4]) = data[{0}] / 32767.0f", i);
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}
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}
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this.channels = channels;
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this.sampleRate = samplesPerSecond;
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untyped __cpp__("delete[] data");
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compressedData = null;
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done();
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}
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#else
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public function uncompress(done: Void->Void): Void {
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#if (!kha_no_ogg)
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if (uncompressedData != null) {
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done();
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return;
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}
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var output = new BytesOutput();
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var header = Reader.readAll(compressedData, output, true);
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var soundBytes = output.getBytes();
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var count = Std.int(soundBytes.length / 4);
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if (header.channel == 1) {
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length = count / kha.audio2.Audio.samplesPerSecond; // header.sampleRate;
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uncompressedData = new kha.arrays.Float32Array(count * 2);
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for (i in 0...count) {
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uncompressedData[i * 2 + 0] = soundBytes.getFloat(i * 4);
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uncompressedData[i * 2 + 1] = soundBytes.getFloat(i * 4);
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}
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}
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else {
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length = count / 2 / kha.audio2.Audio.samplesPerSecond; // header.sampleRate;
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uncompressedData = new kha.arrays.Float32Array(count);
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for (i in 0...count) {
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uncompressedData[i] = soundBytes.getFloat(i * 4);
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}
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}
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channels = header.channel;
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sampleRate = header.sampleRate;
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compressedData = null;
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done();
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#end
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}
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#end
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public function unload() {
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compressedData = null;
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uncompressedData = null;
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}
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}
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