ebiten/audio/internal/readerdriver/driver_ios.go
Hajime Hoshi 17869143c0 audio/internal/readerdriver: Do mixing on Ebiten side
Creating a new AudioQueue is more expensive than expected, and
this caused a little blocking the game when playing a lot of SEs.

Closes #1702
Updates #1680
2021-07-08 23:11:05 +09:00

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// Copyright 2021 The Ebiten Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build darwin && ios
// +build darwin,ios
package readerdriver
// 12288 seems necessary at least on iPod touch (7th).
// With 48000[Hz] stereo, the maximum delay is (12288 / 4 / 2 [samples]) / 48000 [Hz] = 0.032 [sec].
// '4' is float32 size in bytes. '2' is a number of channels for stereo.
const bufferSizeInBytes = 12288