CFNetwork + AudioFile + AudioConverter + AudioUnit组合的经典音频播放流程(以MP3为例):
1、读取MP3文件 2、解析采样率、码率、时长等信息,分离MP3中的音频帧 3、对分离出来的音频帧解码得到PCM数据 4、把PCM数据解码成音频信号并交给硬件播放 5、重复1-4步直到播放完成
Note:如果需要混音、均衡器等,在第3步和第4步之间进行。
感谢!
我正在尝试解决M4A的kAudioFileStreamError_NotOptimized问题。看到代码里如果遇到kAudioFileStreamError_NotOptimized就把全部文件下载回来。
这里我想可以先直接去读文件尾,把moov在mdat之前读出来给parser,就可以解决。
目前正在看代码准备尝试一下。
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