//=============================================================// 文件名稱：	Mpeg4_Driver.c// 功能描述:	mpeg4硬件初始化程序// 維護記錄:	2007-8-13	by liuxue created//=============================================================#include "Mpeg4_driver.h"//=============================================================// 語法格式：	MPEG4_Init(void);// 實現功能：	初始化mpeg4硬件，設定mpeg4 Buffer及指定當前工作Buffer// 參數：		無// 返回值：		無//=============================================================void MPEG4_Init(void){	*P_MPEG4_CLK_SEL = C_MPEG4_CLK_AHBDIV2;						// mpeg4模塊時鐘選擇	*P_MPEG4_CLK_CONF = C_MPEG4_EXTRACLK_EN						// mpeg4模塊時鐘設置						| C_MPEG4_MASTERCLK_EN						| C_MPEG4_RST_DIS;		MPEG4_Buffer_Addr_Set(	MPEG4_VLC_BUFFER1_SA, 							MPEG4_VLC_BUFFER2_SA, 							MPEG4_W_BUFFER0_SA, 							MPEG4_W_BUFFER1_SA, 							MPEG4_W_BUFFER2_SA);				// mpeg4 buffer設置（write buffer & VLC buffer）	MPEG4_Buffer_P_Sel(0, 0);									// mpeg4當前工作buffer設置}//=============================================================// 語法格式：	MPEG4_Buffer_Addr_Set(unsigned int V_Sa1,unsigned int V_Sa2, //							unsigned int W_Sa1, unsigned int W_Sa2, unsigned int W_Sa3);// 實現功能：	mpeg4 Buffer設置// 參數：		V_Sa1，VLC buffer1；V_Sa2，VLC buffer2；//				W_Sa1，W buffer1；W_Sa2，W buffer2；W_Sa3，W buffer3；// 返回值：		無//=============================================================void MPEG4_Buffer_Addr_Set(unsigned int V_Sa1,unsigned int V_Sa2, 							unsigned int W_Sa1, unsigned int W_Sa2, unsigned int W_Sa3){	*P_MPEG4_VLCBUFFER_SA1 = V_Sa1;	*P_MPEG4_VLCBUFFER_SA2 = V_Sa2;	*P_MPEG4_WRITEBUFFER_SA1 = W_Sa1;	*P_MPEG4_WRITEBUFFER_SA2 = W_Sa2;	*P_MPEG4_WRITEBUFFER_SA3 = W_Sa3;}//=============================================================// 語法格式：	void MPEG4_Buffer_P_Sel(unsigned int Vlc_Sel, unsigned int W_Sel);// 實現功能：	mpeg4 當前工作Buffer設置// 參數：		Vlc_Sel，VLC 當前buffer；W_Sel，Write 當前buffer// 返回值：		無//=============================================================void MPEG4_Buffer_P_Sel(unsigned int Vlc_Sel, unsigned int W_Sel){	*P_MPEG4_VLCBUFFER_SEL = Vlc_Sel;	*P_MPEG4_WRITEBUFFER_SEL = W_Sel;}