#include "bzutil.h"



int32_t BZ2_bzBuffBlkSize (void)
{
#if (defined CHIP_EC616 || defined CHIP_EC616_Z0 || defined CHIP_EC616S || defined CHIP_EC626)
    return BZ2_BUFF_BLOCK_SMALL_SIZE;
#else
    return BZ2_BUFF_BLOCK_LARGE_SIZE;
#endif
}

void BZ2_bzBuffOpen(buf_handle* hd, uint32_t size, uint8_t* buff)
{
	hd->cursor = 0;
	hd->encBufSize = size;
	hd->encBuf = buff;
}
int32_t BZ2_bzBuffRead (char* buffer, uint32_t size, uint32_t count, buf_handle* handle)
{
    int32_t hasread = 0;
    if(handle == NULL)
		return 0;
	if(handle->cursor >= handle->encBufSize){
		return 0;
	}
    if(size*count >= handle->encBufSize - handle->cursor){
		hasread = handle->encBufSize - handle->cursor;
		memcpy(buffer, handle->encBuf + handle->cursor, hasread);
	    handle->cursor = handle->encBufSize;
	}else{
		hasread = size*count;
		memcpy(buffer, handle->encBuf + handle->cursor, hasread);
		handle->cursor += hasread;
	}
	//printf("bsRead:%d bytes\n", hasread);
    return hasread/size;
}

int32_t BZ2_bzBuffWrite (char* buffer, uint32_t size, uint32_t count, buf_handle* handle)
{
    int32_t haswrite = 0;
    if(handle == NULL)
		return 0;
	if(handle->cursor >= handle->encBufSize){
		return 0;
	}
    if(size*count >= handle->encBufSize - handle->cursor){
		haswrite = handle->encBufSize - handle->cursor;
		memcpy(handle->encBuf + handle->cursor, buffer,  haswrite);
	    handle->cursor = handle->encBufSize;
		//printf("reach the handle->encBufSize!!!!!!!!!!!!!!!!!\n");
	}else{
		haswrite = size*count;
		memcpy(handle->encBuf + handle->cursor, buffer, haswrite);
		handle->cursor += haswrite;
	}
	//printf("size=%d, count=%d, haswrite=%d\n", size, count, haswrite);
    return haswrite/size;
}