109 lines
2.4 KiB
Haxe
109 lines
2.4 KiB
Haxe
package kha.audio2;
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import haxe.io.Bytes;
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@:headerCode("#define STB_VORBIS_HEADER_ONLY\n#include <kinc/libs/stb_vorbis.c>")
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@:headerClassCode("stb_vorbis* vorbis;")
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class StreamChannel implements kha.audio1.AudioChannel {
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var atend: Bool = false;
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@:keep var loop: Bool;
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var myVolume: Float;
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var paused: Bool = false;
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public function new(data: Bytes, loop: Bool) {
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myVolume = 1;
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this.loop = loop;
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initVorbis(data);
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}
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@:functionCode("vorbis = stb_vorbis_open_memory(data->b->Pointer(), data->length, NULL, NULL);")
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function initVorbis(data: Bytes): Void {}
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@:functionCode("
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int read = stb_vorbis_get_samples_float_interleaved(vorbis, 2, (float*)samples->self.data, length);
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if (read < length / 2) {
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if (loop) {
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stb_vorbis_seek_start(vorbis);
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}
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else {
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atend = true;
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}
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for (int i = read * 2; i < length; ++i) {
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samples->self.data[i] = 0;
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}
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}
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")
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function nextVorbisSamples(samples: kha.arrays.Float32Array, length: Int): Void {}
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public function nextSamples(samples: kha.arrays.Float32Array, length: Int, sampleRate: Int): Void {
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if (paused) {
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for (i in 0...length) {
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samples[i] = 0;
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}
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return;
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}
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nextVorbisSamples(samples, length);
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}
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public function play(): Void {
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paused = false;
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}
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public function pause(): Void {
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paused = true;
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}
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public function stop(): Void {
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atend = true;
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}
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public var length(get, never): Float; // Seconds
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@:functionCode("
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if (vorbis == NULL) return 0;
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return stb_vorbis_stream_length_in_seconds(vorbis);
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")
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function get_length(): Int {
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return 0;
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}
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public var position(get, set): Float; // Seconds
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@:functionCode("
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if (vorbis == NULL) return 0;
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return stb_vorbis_get_sample_offset(vorbis) /
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(float)stb_vorbis_stream_length_in_samples(vorbis) *
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stb_vorbis_stream_length_in_seconds(vorbis);
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")
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function get_position(): Float {
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return 0;
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}
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@:functionCode("
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if (vorbis == NULL) return value;
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unsigned int rate = stb_vorbis_get_info(vorbis).sample_rate;
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stb_vorbis_seek_frame(vorbis, rate * value);
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return value;
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")
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function set_position(value: Float): Float {
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return value;
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}
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public var volume(get, set): Float;
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function get_volume(): Float {
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return myVolume;
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}
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function set_volume(value: Float): Float {
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return myVolume = value;
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}
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public var finished(get, never): Bool;
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function get_finished(): Bool {
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return atend;
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}
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}
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