双声道的数据存储格式
/chinabinlang/article/details/72932947
有两种类型， LRLR...每个采样点交替， LLL...RRR 每个通道隔离
C++的实现；
为了简单，我这里先知实现一个声道的获取：
unsigned char * get_oneChannel_left_from_doubleChannel(unsigned char * pDoubleChannelBuf, int nLen, int nPerSampleBytesPerChannle)
{
int nOneChannelLen = nLen / 2;
unsigned char * pOneChannelBuf = new unsigned char[nOneChannelLen];
for ( int i = 0 ; i < nOneChannelLen/2; i++ )
{//target: uint16, source: uint32, 指针数据类型变量的增加
memcpy((uint16_t*)pOneChannelBuf + i, ((uint32_t *)(pDoubleChannelBuf)) + i, nPerSampleBytesPerChannle);
}
return pOneChannelBuf;
}
Java的实现
/p/369062109 :Java 中 NIO 看这一篇就够了
ByteBuffer
CharBuffer
ShortBuffer
IntBuffer
LongBuffer
FloatBuffer
DoubleBuffer
想用Bytebuffer实现对双声道的处理操作，已知byte[]，怎样创建 Bytebuffer?
public static ByteBuffer wrap(byte[] array); 把一个现成的数组放到缓冲区中使用
public static ByteBuffer wrap(byte[] var0) {return wrap(var0, 0, var0.length);}
public static ByteBuffer allocate(int var0) {if (var0 < 0) {throw new IllegalArgumentException();} else {return new HeapByteBuffer(var0, var0);}}
怎样从ByteBuffer得到 byte[]
public final short[] array() {if (this.hb == null) {throw new UnsupportedOperationException();} else if (this.isReadOnly) {throw new ReadOnlyBufferException();} else {return this.hb;}}
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