X-Git-Url: https://wimlib.net/git/?p=wimlib;a=blobdiff_plain;f=src%2Fwimlib.h;h=08d74b25c5cc2a0b95361eb15455f5a14c112465;hp=d3b0c9a6212188bb9e614da412d69c230ff7e519;hb=3f9b53a4a214a254bb27ed30994faf2a0fd12375;hpb=7e7070982833be4292431b7dbffa8280e27b3d8a

diff --git a/src/wimlib.h b/src/wimlib.h
index d3b0c9a6..08d74b25 100644
--- a/src/wimlib.h
+++ b/src/wimlib.h
@@ -431,6 +431,7 @@ union wimlib_progress_info {
 		 * ::WIMLIB_COMPRESSION_TYPE_LZX. */
 		int	 compression_type;
 
+		/** Library internal use only. */
 		uint64_t _private;
 	} write_streams;
 
@@ -613,7 +614,7 @@ struct wimlib_pattern_list {
 	 * but the @a pats pointer itself will not.  See the man page for
 	 * <b>wimlib-imagex capture</b> for more information about allowed
 	 * patterns. */
-	tchar **pats;
+	wimlib_tchar **pats;
 
 	/** Number of patterns in the @a pats array. */
 	size_t num_pats;
@@ -641,7 +642,7 @@ struct wimlib_capture_config {
 	struct wimlib_pattern_list reserved2;
 
 	/** Library internal use only. */
-	tchar *_prefix;
+	wimlib_tchar *_prefix;
 
 	/** Library internal use only. */
 	size_t _prefix_num_tchars;
@@ -899,7 +900,8 @@ struct wimlib_modify_command {
  * added at the end to maintain a compatible ABI, except when it's being broken
  * anyway. */
 enum wimlib_error_code {
-	WIMLIB_ERR_ALREADY_LOCKED = 1,
+	WIMLIB_ERR_SUCCESS = 0,
+	WIMLIB_ERR_ALREADY_LOCKED,
 	WIMLIB_ERR_COMPRESSED_LOOKUP_TABLE,
 	WIMLIB_ERR_DECOMPRESSION,
 	WIMLIB_ERR_DELETE_STAGING_DIR,
@@ -949,7 +951,6 @@ enum wimlib_error_code {
 	WIMLIB_ERR_SPLIT_INVALID,
 	WIMLIB_ERR_SPLIT_UNSUPPORTED,
 	WIMLIB_ERR_STAT,
-	WIMLIB_ERR_SUCCESS = 0,
 	WIMLIB_ERR_TIMEOUT,
 	WIMLIB_ERR_UNICODE_STRING_NOT_REPRESENTABLE,
 	WIMLIB_ERR_UNKNOWN_VERSION,
@@ -1656,6 +1657,56 @@ wimlib_join(const wimlib_tchar * const *swms,
 	    int wim_write_flags,
 	    wimlib_progress_func_t progress_func);
 
+/**
+ * Compress a chunk of a WIM resource using LZX compression.
+ *
+ * This function is exported for convenience only and need not be used.
+ *
+ * @param chunk
+ * 	Uncompressed data of the chunk.
+ * @param chunk_size
+ * 	Size of the uncompressed chunk, in bytes.
+ * @param out
+ * 	Pointer to output buffer of size at least (@a chunk_size - 1) bytes.
+ *
+ * @return
+ * 	The size of the compressed data written to @a out in bytes, or 0 if the
+ * 	data could not be compressed to (@a chunk_size - 1) bytes or fewer.
+ *
+ * As a special requirement, the compression code is optimized for the WIM
+ * format and therefore requires (@a chunk_size <= 32768).
+ */
+extern unsigned
+wimlib_lzx_compress(const void *chunk, unsigned chunk_size, void *out);
+
+/**
+ * Decompresses a block of LZX-compressed data as used in the WIM file format.
+ *
+ * Note that this will NOT work unmodified for LZX as used in the cabinet
+ * format, which is not the same as in the WIM format!
+ *
+ * This function is exported for convenience only and need not be used.
+ *
+ * @param compressed_data
+ * 	Pointer to the compressed data.
+ *
+ * @param compressed_len
+ * 	Length of the compressed data, in bytes.
+ *
+ * @param uncompressed_data
+ * 	Pointer to the buffer into which to write the uncompressed data.
+ *
+ * @param uncompressed_len
+ * 	Length of the uncompressed data.  It must be 32768 bytes or less.
+ *
+ * @return
+ * 	0 on success; non-zero on failure.
+ */
+extern int
+wimlib_lzx_decompress(const void *compressed_data, unsigned compressed_len,
+		      void *uncompressed_data, unsigned uncompressed_len);
+
+
 /**
  * Mounts an image in a WIM file on a directory read-only or read-write.
  *
@@ -2410,4 +2461,19 @@ wimlib_write(WIMStruct *wim,
 	     unsigned num_threads,
 	     wimlib_progress_func_t progress_func);
 
+/**
+ * This function is equivalent to wimlib_lzx_compress(), but instead compresses
+ * the data using "XPRESS" compression.
+ */
+extern unsigned
+wimlib_xpress_compress(const void *chunk, unsigned chunk_size, void *out);
+
+/**
+ * This function is equivalent to wimlib_lzx_decompress(), but instead assumes
+ * the data is compressed using "XPRESS" compression.
+ */
+extern int
+wimlib_xpress_decompress(const void *compressed_data, unsigned compressed_len,
+			 void *uncompressed_data, unsigned uncompressed_len);
+
 #endif /* _WIMLIB_H */