视频监控行业G711编解码[续]编码样例

//G711 PCMA编码
bool CEncoder::G711A_AudioEncode(LPBYTE pInput, unsigned int nInLen, LPBYTE pOutput, unsigned int& nOutLen)
{
	if(!pInput || !pOutput || nInLen <= 0)
		return false;

	unsigned int out_size = (nInLen >> 1);
	uint8_t* pout_data = pOutput;
	int16_t* pin_data = (int16_t*)pInput;

	for(int i=0; i<out_size; i++)
	{
		pout_data[i] = linear2alaw(pin_data[i]);
	}

	nOutLen = out_size;
	return true;
}

//G711 PCMU编码
bool CEncoder::G711U_AudioEncode(LPBYTE pInput, unsigned int nInLen, LPBYTE pOutput, unsigned int& nOutLen)
{
	if(!pInput || !pOutput || nInLen <= 0)
		return false;

	unsigned int out_size = (nInLen >> 1);
	uint8_t* pout_data = pOutput;
	int16_t* pin_data = (int16_t*)pInput;

	for(int i=0; i<out_size; i++)
	{
		pout_data[i] = linear2ulaw(pin_data[i]);
	}

	nOutLen = out_size;
	return true;
}

视频监控行业G711编解码[续]编码样例

原文：http://blog.csdn.net/acm2008/article/details/44649563