buffer.h

dm642_video_stream

/////////////////////////////////////////////
//
//mem.h
//
/////////////////////////////////////////////
#ifndef __IPCAM_MEM_H__
#define __IPCAM_MEM_H__

#define VIDEO_BUFFER_COUNT				15

#define SEQUENCE_LARGE_NUMBER_FIRST		65500
#define SEQUENCE_SMALL_NUMBER_LAST		30

typedef enum
{
	CSR_LESS	= -1,
	CSR_EQUAL	= 0,
	CSR_GREATER	= 1
} COMPARE_SEQ_RET;

//encoded buffer header
typedef struct _EBHeader
{
	struct _EBHeader *prev;
	struct _EBHeader *next;
	
	Uint32 size;		/* real encoded data size */
	Uint32 time;		/* the time from CLK_getltime indicate when the frame is generated*/
	Uint16 sequence;	/* sequence no. */

	Uint8 reference;	/* reference count */
	Uint8 frameType;	/* ENCODED_VIDEO_FRAME_TYPE */

} EBHeader;

/**/
typedef struct _MemBlock
{
	Uint8 *pMem;
	Uint8 *pCurrent;
	Uint32 size;

} MemBlock;

COMPARE_SEQ_RET CompareSequence(Uint16 _seq1, Uint16 _seq2);

EBHeader* GetVideoLastIFrame(Uint8 _ch);
EBHeader* GetVideoNextAvailableBuffer(Uint8 _ch, Uint16 _seq);
EBHeader* GetVideoCurrentFreeBuffer(Uint8 _ch);
int GetEncodedVideoBufferContentSize();
int GetEncodedVideoBufferHeaderSize();


void ClearVideoBuffer(Uint8 _ch);
void FinalizeEncodedBuffer(Uint8 _ch);
void InitEncodedVideoBuffer(Uint8 _ch, VIDEO_RESOLUTION _vdRes);
Bool Codec_InitMem();
Bool Codec_CloseMem();
void* Codec_ISRAMemAlloc(Uint8 _ch, Uint32 _size, Uint16 _alignment);
void Codec_ISRAMemFree(Uint8 _ch, Ptr _pMem, Uint32 _size);
void* Codec_SDRAMemAlloc(Uint8 _ch, Uint32 _size, Uint16 _alignment);
void Codec_SDRAMemFree(Uint8 _ch, Ptr _pMem, Uint32 _size);

#endif