63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
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#include "bzutil.h"
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int32_t BZ2_bzBuffBlkSize (void)
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{
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#if (defined CHIP_EC616 || defined CHIP_EC616_Z0 || defined CHIP_EC616S || defined CHIP_EC626)
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return BZ2_BUFF_BLOCK_SMALL_SIZE;
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#else
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return BZ2_BUFF_BLOCK_LARGE_SIZE;
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#endif
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}
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void BZ2_bzBuffOpen(buf_handle* hd, uint32_t size, uint8_t* buff)
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{
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hd->cursor = 0;
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hd->encBufSize = size;
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hd->encBuf = buff;
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}
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int32_t BZ2_bzBuffRead (char* buffer, uint32_t size, uint32_t count, buf_handle* handle)
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{
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int32_t hasread = 0;
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if(handle == NULL)
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return 0;
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if(handle->cursor >= handle->encBufSize){
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return 0;
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}
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if(size*count >= handle->encBufSize - handle->cursor){
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hasread = handle->encBufSize - handle->cursor;
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memcpy(buffer, handle->encBuf + handle->cursor, hasread);
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handle->cursor = handle->encBufSize;
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}else{
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hasread = size*count;
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memcpy(buffer, handle->encBuf + handle->cursor, hasread);
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handle->cursor += hasread;
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}
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//printf("bsRead:%d bytes\n", hasread);
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return hasread/size;
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}
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int32_t BZ2_bzBuffWrite (char* buffer, uint32_t size, uint32_t count, buf_handle* handle)
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{
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int32_t haswrite = 0;
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if(handle == NULL)
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return 0;
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if(handle->cursor >= handle->encBufSize){
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return 0;
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}
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if(size*count >= handle->encBufSize - handle->cursor){
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haswrite = handle->encBufSize - handle->cursor;
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memcpy(handle->encBuf + handle->cursor, buffer, haswrite);
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handle->cursor = handle->encBufSize;
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//printf("reach the handle->encBufSize!!!!!!!!!!!!!!!!!\n");
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}else{
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haswrite = size*count;
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memcpy(handle->encBuf + handle->cursor, buffer, haswrite);
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handle->cursor += haswrite;
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}
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//printf("size=%d, count=%d, haswrite=%d\n", size, count, haswrite);
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return haswrite/size;
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}
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