me.h

基于Linux的ffmepg decoder

#ifndef __ME_H
	#define __ME_H
	#include "define.h"
	#include "local_mem.h"
	#include "decoder.h"


	/////////////////////////////////////////////////
	// ME command queue offset
	#define MV1_BUFF0			0		// 4W
	#define MV2_BUFF1			4		// 4W
	#define MV_BUFF			8		// 4W
	#define MVUV_BUFF			12		// 1W
	#define PMV_CMD_ST		13		// 8W
	#define PXI_CMD0_ST		21		// 6W
	#define PXI_CMD1_ST		27		// 6W


	/////////////////////////////////////////////////
	// ME command queue bit field
	#define mMECMD_TYPE3b(v)	((uint32_t)(v) << 29)
	// command (3 bits)
	#define MEC_PMVX			0	// Set horizontal prediction vector command
	#define MEC_PMVY			1	// Set vertical prediction vector command
	#define MEC_SAD			2	// Performs SAD calculation based on a given
								// motion vector
	#define MEC_DIA			3	// Performs diamond search repeatedly to find
								// the best motion vector
	#define MEC_REF			4	// Performs half-pixel refine based on previous
								// found best motion vector by DIA
	#define MEC_MOD			5	// Intra/inter mode decision command
	#define MEC_PXI			6	// Performs pixel interpolation of the reference
								// block & output the interpolated result block
								// to local memory

	// MV / MVD  buffer
	#define mMV_X8b(v)			((uint32_t)(v) << 20)
	#define mMV_Y8b(v)			((uint32_t)(v) << 12)
	#define mMV_RADD12b(v)		((uint32_t)(v) & 0xfff)

	// MEC_PMVX / MEC_PMVY
//	#define MECPMV_DECODE			(BIT28 | BIT27 | BIT26)
									// all from ME Buffer
									// Prediction vector source
									// Specify the source for each candidate predictionvector,
									// SRC[0] for MV1, SRC[1] for MV2 and SRC[2] for MV3
									// 0: the source is from the MV field in this command
									// 1: the source is from the MV buffer
	#define mMECPMV_E_BSZ1b(v)	((uint32_t)(v) << 25)
									// 1: 1MV mode, 0: 4MV mode
									// In decoding mode: not used and should be 0
	#define mMECPMV_4MVBN2b(v)	((uint32_t)(v) << 23)	// block number
//	#define mMECPMV_MV1HIT1b(v)	((uint32_t)(v) << 22)
//	#define mMECPMV_MV37b(v)		((uint32_t)(v) << 14)
									// Candidate prediction vector 3/Index to candidate prediction vector 3
//	#define mMECPMV_MV27b(v)		((uint32_t)(v) << 7)
									// Candidate prediction vector 2/Index to candidate prediction vector 2
//	#define mMECPMV_MV17b(v)		((uint32_t)(v) << 0)
									// Candidate prediction vector 1/Index to candidate prediction vector 1


	// MEC_PXI
	#define MEPXI_E_LAST			BIT28
	#define MEPXI_UV				(BIT27 | BIT25)
//	#define MEPXI_SKIP_PXI			BIT26
//	#define MEPXI_MBCNT			BIT25
	#define mMEPXI_BKNUM2b(v)		((uint32_t)(v) << 23)
	#define MEPXI_GRP1				BIT22
//	#define MEPXI_PAD_RIGHT		BIT21
//	#define MEPXI_PAD_TOP			BIT20
//	#define MEPXI_PAD_BOT			BIT19
	#define mMEPXI_RADD12b(v)		((uint32_t)(v) << 0)

	/*

		1MV:

				REF1_Y_OFF-------
REF_Y_OFF_0 ------				|
				|				|
				V				V
				###########---###########---
				#Y	|	|	#	#Y	|	|	#	|
				#-----------#---#-----------#---
				#	|	|	#	#	|	|	#	|
				#-----------#---#-----------#---
				#	|	|	#	#	|	|	#	|
				###########---###########---
				|	|	|	|	|	|	|	|	|
				############################
				#U	|	#V	|	#U	|	#V	|	#
				#-------#-------#------#--------#
				#	|	#	|	#	|	#	|	#
				############################

		4MV:

				REF_Y0_OFF_1 -----
REF_Y0_OFF_0 -----				|
				|				|
				V				V
				###########################
				#Y0	|	#Y1	|	#Y0	|	#Y1	|	#
				#-------#-------#-------#------#
				#	|	#	|	#	|	#	|	#
				###########################
				#Y2	|	#Y3	|	#Y2	|	#Y3	|	#
				#-------#-------#------#-------#
				#	|	#	|	#	|	#	|	#
				############################
				#U	|	#V	|	#U	|	#V	|	#
				#-------#-------#------#--------#
				#	|	#	|	#	|	#	|	#
				############################
	*/
	//Y0
	#define CONST_MEPXI0Y0	(mMECMD_TYPE3b(MEC_PXI)				\
						| mMEPXI_BKNUM2b(0)					\
						| mMEPXI_RADD12b(REF_Y0_OFF_0 >> 2))
	// Y1
	#define CONST_MEPXI0Y1	(mMECMD_TYPE3b(MEC_PXI)				\
						| mMEPXI_BKNUM2b(1)					\
						| mMEPXI_RADD12b(REF_Y1_OFF_0 >> 2))
	// Y2
	#define CONST_MEPXI0Y2	(mMECMD_TYPE3b(MEC_PXI)				\
						| mMEPXI_BKNUM2b(2)					\
						| mMEPXI_RADD12b(REF_Y2_OFF_0 >> 2))
	// Y3
	#define CONST_MEPXI0Y3	(mMECMD_TYPE3b(MEC_PXI)				\
						| mMEPXI_BKNUM2b(3)					\
						| mMEPXI_RADD12b(REF_Y3_OFF_0 >> 2))
	// U
	#define CONST_MEPXI0U	(mMECMD_TYPE3b(MEC_PXI)				\
						| mMEPXI_BKNUM2b(0)					\
						| MEPXI_UV							\
						| mMEPXI_RADD12b(REF_U_OFF_0 >> 2))
	// V
	#define CONST_MEPXI0V	(mMECMD_TYPE3b(MEC_PXI)				\
						| MEPXI_E_LAST						\
						| mMEPXI_BKNUM2b(0)					\
						| MEPXI_UV							\
						| mMEPXI_RADD12b(REF_V_OFF_0 >> 2))

	//Y0
	#define CONST_MEPXI1Y0	(mMECMD_TYPE3b(MEC_PXI)				\
						| mMEPXI_BKNUM2b(0)					\
						| MEPXI_GRP1							\
						| mMEPXI_RADD12b(REF_Y0_OFF_1 >> 2))
	// Y1
	#define CONST_MEPXI1Y1	(mMECMD_TYPE3b(MEC_PXI)				\
						| mMEPXI_BKNUM2b(1)					\
						| MEPXI_GRP1							\
						| mMEPXI_RADD12b(REF_Y1_OFF_1 >> 2))
	// Y2
	#define CONST_MEPXI1Y2	(mMECMD_TYPE3b(MEC_PXI)				\
						| mMEPXI_BKNUM2b(2)					\
						| MEPXI_GRP1							\
						| mMEPXI_RADD12b(REF_Y2_OFF_1 >> 2))
	// Y3
	#define CONST_MEPXI1Y3	(mMECMD_TYPE3b(MEC_PXI)				\
						| mMEPXI_BKNUM2b(3)					\
						| MEPXI_GRP1							\
						| mMEPXI_RADD12b(REF_Y3_OFF_1 >> 2))
	// U
	#define CONST_MEPXI1U	(mMECMD_TYPE3b(MEC_PXI)				\
						| MEPXI_UV							\
						| mMEPXI_BKNUM2b(0)					\
						| MEPXI_GRP1							\
						| mMEPXI_RADD12b(REF_U_OFF_1 >> 2))
	// V
	#define CONST_MEPXI1V	(mMECMD_TYPE3b(MEC_PXI)				\
						| MEPXI_E_LAST						\
						| MEPXI_UV							\
						| mMEPXI_BKNUM2b(0)					\
						| MEPXI_GRP1							\
						| mMEPXI_RADD12b(REF_V_OFF_1 >> 2))


	#ifdef ME_GLOBALS
		#define ME_EXT
		const uint32_t u32ConstMePxi0[6] = {
			CONST_MEPXI0Y0,
			CONST_MEPXI0Y1,
			CONST_MEPXI0Y2,
			CONST_MEPXI0Y3,
			CONST_MEPXI0U,
			CONST_MEPXI0V
		};
		const uint32_t u32ConstMePxi1[6] = {
			CONST_MEPXI1Y0,
			CONST_MEPXI1Y1,
			CONST_MEPXI1Y2,
			CONST_MEPXI1Y3,
			CONST_MEPXI1U,
			CONST_MEPXI1V
		};
	#else
		#define ME_EXT extern
		extern uint32_t u32ConstMePxi0[];
		extern uint32_t u32ConstMePxi1[];
	#endif

	ME_EXT void me_dec_commandq_init(uint32_t * base);
#endif /* __ME_H  */