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3b7dafb117
This commit adds new files written exclusively for the 3ds port. Additional comments: 1. Plugins works, but will be enabled in future commits. 2. The port has only been tested on the New 3DS. 3. Not all features of rockbox have been tested so there may be bugs or non-functional features. 4. There is a known issue where a random crash can occur when exiting the app. Change-Id: I122d0bea9aa604e04fca45ba8287cf79e6110769
37 lines
1.5 KiB
C
37 lines
1.5 KiB
C
#ifndef _BFILE_H_
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#define _BFILE_H_
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#include "bfile-internal.h"
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static const int defaultPageSize = 4096; // all pages are this size
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static const int defaultBufferSize = 0x800000; // default buffer size, 8 MB
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static const int minPages = 4; // minimum total pages per file
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static const int pagesPerShard = 32; // ideal number of pages per shard
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static const int maxShards = 128; // maximum number of shards per file
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// NewPager returns a new Pager that is backed by the provided file.
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Pager* NewPager(Handle file);
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// NewPagerSize returns a new Pager with a custom page size and buffer size.
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// The bufferSize is the maximum amount of memory dedicated to individual
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// pages. Setting pageSize and bufferSize to zero will use their defaults,
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// which are 4096 and 8 MB respectively. Custom values are rounded up to the
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// nearest power of 2.
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Pager* NewPagerSize(Handle file, int pageSize, int bufferSize);
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// ReadAt reads len(b) bytes from the File starting at byte offset off.
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int_error_t PagerReadAt(Pager *f, u8 *b, size_t len_b, off_t off);
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// WriteAt writes len(b) bytes to the File starting at byte offset off.
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int_error_t PagerWriteAt(Pager *f, u8 *b, size_t len_b, off_t off);
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// Flush writes any unwritten buffered data to the underlying file.
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file_error_t PagerFlush(Pager *f);
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// Truncates pager to specified length
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file_error_t PagerTruncate(Pager *f, off_t length);
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// Free all memory associated to a Pager file
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void PagerClear(Pager *f);
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#endif /* _B_FILE_H_ */
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