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-rw-r--r--include/sqfs/compress.h91
1 files changed, 81 insertions, 10 deletions
diff --git a/include/sqfs/compress.h b/include/sqfs/compress.h
index 3860353..cb3994f 100644
--- a/include/sqfs/compress.h
+++ b/include/sqfs/compress.h
@@ -51,22 +51,93 @@ struct compressor_t {
void (*destroy)(compressor_t *stream);
};
+typedef struct {
+ uint16_t id;
+ uint16_t flags;
+ uint32_t block_size;
+
+ union {
+ struct {
+ uint16_t level;
+ uint16_t window_size;
+ } gzip;
+
+ struct {
+ uint16_t level;
+ } zstd;
+
+ struct {
+ uint16_t algorithm;
+ uint16_t level;
+ } lzo;
+
+ struct {
+ uint32_t dict_size;
+ } xz;
+ } opt;
+} compressor_config_t;
+
+typedef enum {
+ SQFS_COMP_FLAG_LZ4_HC = 0x0001,
+ SQFS_COMP_FLAG_LZ4_ALL = 0x0001,
+
+ SQFS_COMP_FLAG_XZ_X86 = 0x0001,
+ SQFS_COMP_FLAG_XZ_POWERPC = 0x0002,
+ SQFS_COMP_FLAG_XZ_IA64 = 0x0004,
+ SQFS_COMP_FLAG_XZ_ARM = 0x0008,
+ SQFS_COMP_FLAG_XZ_ARMTHUMB = 0x0010,
+ SQFS_COMP_FLAG_XZ_SPARC = 0x0020,
+ SQFS_COMP_FLAG_XZ_ALL = 0x003F,
+
+ SQFS_COMP_FLAG_GZIP_DEFAULT = 0x0001,
+ SQFS_COMP_FLAG_GZIP_FILTERED = 0x0002,
+ SQFS_COMP_FLAG_GZIP_HUFFMAN = 0x0004,
+ SQFS_COMP_FLAG_GZIP_RLE = 0x0008,
+ SQFS_COMP_FLAG_GZIP_FIXED = 0x0010,
+ SQFS_COMP_FLAG_GZIP_ALL = 0x001F,
+
+ SQFS_COMP_FLAG_UNCOMPRESS = 0x8000,
+ SQFS_COMP_FLAG_GENERIC_ALL = 0x8000,
+} SQFS_COMP_FLAG;
+
+typedef enum {
+ SQFS_LZO1X_1 = 0,
+ SQFS_LZO1X_1_11 = 1,
+ SQFS_LZO1X_1_12 = 2,
+ SQFS_LZO1X_1_15 = 3,
+ SQFS_LZO1X_999 = 4,
+} SQFS_LZO_ALGORITHM;
+
+#define SQFS_GZIP_DEFAULT_LEVEL (9)
+#define SQFS_GZIP_DEFAULT_WINDOW (15)
+
+#define SQFS_LZO_DEFAULT_ALG SQFS_LZO1X_999
+#define SQFS_LZO_DEFAULT_LEVEL (8)
+
+#define SQFS_ZSTD_DEFAULT_LEVEL (15)
+
+#define SQFS_GZIP_MIN_LEVEL (1)
+#define SQFS_GZIP_MAX_LEVEL (9)
+
+#define SQFS_LZO_MIN_LEVEL (0)
+#define SQFS_LZO_MAX_LEVEL (9)
+
+#define SQFS_ZSTD_MIN_LEVEL (1)
+#define SQFS_ZSTD_MAX_LEVEL (22)
+
+#define SQFS_GZIP_MIN_WINDOW (8)
+#define SQFS_GZIP_MAX_WINDOW (15)
+
#ifdef __cplusplus
extern "C" {
#endif
-bool compressor_exists(E_SQFS_COMPRESSOR id);
-
-/* block_size is the configured block size for the SquashFS image. Needed
- by some compressors to set internal defaults. */
-compressor_t *compressor_create(E_SQFS_COMPRESSOR id, bool compress,
- size_t block_size, char *options);
+int compressor_config_init(compressor_config_t *cfg, E_SQFS_COMPRESSOR id,
+ size_t block_size, uint16_t flags);
-void compressor_print_help(E_SQFS_COMPRESSOR id);
-
-void compressor_print_available(void);
+bool compressor_exists(E_SQFS_COMPRESSOR id);
-E_SQFS_COMPRESSOR compressor_get_default(void);
+compressor_t *compressor_create(const compressor_config_t *cfg);
const char *compressor_name_from_id(E_SQFS_COMPRESSOR id);