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-rw-r--r--include/io/xfrm.h98
1 files changed, 13 insertions, 85 deletions
diff --git a/include/io/xfrm.h b/include/io/xfrm.h
index 22a42b6..3e601ea 100644
--- a/include/io/xfrm.h
+++ b/include/io/xfrm.h
@@ -9,117 +9,45 @@
#include "io/istream.h"
#include "io/ostream.h"
-
-enum {
- /**
- * @brief Deflate compressor with gzip headers.
- *
- * This actually creates a gzip compatible file, including a
- * gzip header and trailer.
- */
- IO_COMPRESSOR_GZIP = 1,
-
- IO_COMPRESSOR_XZ = 2,
-
- IO_COMPRESSOR_ZSTD = 3,
-
- IO_COMPRESSOR_BZIP2 = 4,
-
- IO_COMPRESSOR_MIN = 1,
- IO_COMPRESSOR_MAX = 4,
-};
+#include "xfrm/stream.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
- * @brief Create an input stream that transparently uncompresses data.
+ * @brief Create an input stream that transparently decodes data.
*
* @memberof istream_t
*
* This function creates an input stream that wraps an underlying input stream
- * that is compressed and transparently uncompresses the data when reading
+ * that is encoded/compressed and transparently decodes the data when reading
* from it.
*
- * The new stream takes ownership of the wrapped stream and destroys it when
- * the compressor stream is destroyed. If this function fails, the wrapped
- * stream is also destroyed.
- *
* @param strm A pointer to another stream that should be wrapped.
- * @param comp_id An identifier describing the compressor to use.
+ * @param xfrm The transformation stream to use.
*
* @return A pointer to an input stream on success, NULL on failure.
*/
-SQFS_INTERNAL istream_t *istream_compressor_create(istream_t *strm,
- int comp_id);
+SQFS_INTERNAL istream_t *istream_xfrm_create(istream_t *strm,
+ xfrm_stream_t *xfrm);
/**
- * @brief Create an output stream that transparently compresses data.
+ * @brief Create an output stream that transparently encodes data.
*
* @memberof ostream_t
*
- * This function creates an output stream that transparently compresses all
- * data appended to it and writes the compressed data to an underlying, wrapped
- * output stream.
- *
- * The new stream takes ownership of the wrapped stream and destroys it when
- * the compressor stream is destroyed. If this function fails, the wrapped
- * stream is also destroyed.
+ * This function creates an output stream that transparently encodes
+ * (e.g. compresses) all data appended to it and writes it to an
+ * underlying, wrapped output stream.
*
* @param strm A pointer to another stream that should be wrapped.
- * @param comp_id An identifier describing the compressor to use.
+ * @param xfrm The transformation stream to use.
*
* @return A pointer to an output stream on success, NULL on failure.
*/
-SQFS_INTERNAL ostream_t *ostream_compressor_create(ostream_t *strm,
- int comp_id);
-
-/**
- * @brief Probe the buffered data in an istream to check if it is compressed.
- *
- * @memberof istream_t
- *
- * This function peeks into the internal buffer of an input stream to check
- * for magic signatures of various compressors.
- *
- * @param strm A pointer to an input stream to check
- * @param probe A callback used to check if raw/decoded data matches an
- * expected format. Returns 0 if not, -1 on failure and +1
- * on success.
- *
- * @return A compressor ID on success, 0 if no match was found, -1 on failure.
- */
-SQFS_INTERNAL int istream_detect_compressor(istream_t *strm,
- int (*probe)(const sqfs_u8 *data,
- size_t size));
-
-/**
- * @brief Resolve a compressor name to an ID.
- *
- * @param name A compressor name.
- *
- * @return A compressor ID on success, -1 on failure.
- */
-SQFS_INTERNAL int io_compressor_id_from_name(const char *name);
-
-/**
- * @brief Resolve a id to a compressor name.
- *
- * @param id A compressor ID.
- *
- * @return A compressor name on success, NULL on failure.
- */
-SQFS_INTERNAL const char *io_compressor_name_from_id(int id);
-
-/**
- * @brief Check if support for a given compressor has been built in.
- *
- * @param id A compressor ID.
- *
- * @return True if the compressor is supported, false if not.
- */
-SQFS_INTERNAL bool io_compressor_exists(int id);
+SQFS_INTERNAL ostream_t *ostream_xfrm_create(ostream_t *strm,
+ xfrm_stream_t *xfrm);
#ifdef __cplusplus
}