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-rw-r--r--include/xfrm/compress.h117
-rw-r--r--include/xfrm/stream.h39
2 files changed, 156 insertions, 0 deletions
diff --git a/include/xfrm/compress.h b/include/xfrm/compress.h
new file mode 100644
index 0000000..b5db985
--- /dev/null
+++ b/include/xfrm/compress.h
@@ -0,0 +1,117 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * compress.h
+ *
+ * Copyright (C) 2021 David Oberhollenzer <goliath@infraroot.at>
+ */
+#ifndef XFRM_COMPRESS_H
+#define XFRM_COMPRESS_H
+
+#include "xfrm/stream.h"
+
+typedef struct {
+ uint32_t flags;
+ uint32_t level;
+
+ union {
+ struct {
+ uint8_t vli;
+ uint8_t pad0[15];
+ } xz;
+
+ struct {
+ uint16_t window_size;
+ uint16_t padd0[7];
+ } gzip;
+
+ struct {
+ uint8_t work_factor;
+ uint8_t padd0[15];
+ } bzip2;
+
+ uint64_t padd0[2];
+ } opt;
+} compressor_config_t;
+
+typedef enum {
+ COMP_FLAG_XZ_EXTREME = 0x0001,
+} COMP_FLAG_XZ;
+
+typedef enum {
+ COMP_XZ_VLI_X86 = 1,
+ COMP_XZ_VLI_POWERPC = 2,
+ COMP_XZ_VLI_IA64 = 3,
+ COMP_XZ_VLI_ARM = 4,
+ COMP_XZ_VLI_ARMTHUMB = 5,
+ COMP_XZ_VLI_SPARC = 6,
+} COMP_XZ_VLI;
+
+#define COMP_GZIP_MIN_LEVEL (1)
+#define COMP_GZIP_MAX_LEVEL (9)
+#define COMP_GZIP_DEFAULT_LEVEL (9)
+
+#define COMP_GZIP_MIN_WINDOW (8)
+#define COMP_GZIP_MAX_WINDOW (15)
+#define COMP_GZIP_DEFAULT_WINDOW (15)
+
+#define COMP_ZSTD_MIN_LEVEL (1)
+#define COMP_ZSTD_MAX_LEVEL (22)
+#define COMP_ZSTD_DEFAULT_LEVEL (15)
+
+#define COMP_BZIP2_MIN_LEVEL (1)
+#define COMP_BZIP2_MAX_LEVEL (9)
+#define COMP_BZIP2_DEFAULT_LEVEL (9)
+
+#define COMP_BZIP2_MIN_WORK_FACTOR (0)
+#define COMP_BZIP2_MAX_WORK_FACTOR (250)
+#define COMP_BZIP2_DEFAULT_WORK_FACTOR (30)
+
+#define COMP_XZ_MIN_LEVEL (0)
+#define COMP_XZ_MAX_LEVEL (9)
+#define COMP_XZ_DEFAULT_LEVEL (6)
+
+enum {
+ XFRM_COMPRESSOR_GZIP = 1,
+ XFRM_COMPRESSOR_XZ = 2,
+ XFRM_COMPRESSOR_ZSTD = 3,
+ XFRM_COMPRESSOR_BZIP2 = 4,
+
+ XFRM_COMPRESSOR_MIN = 1,
+ XFRM_COMPRESSOR_MAX = 4,
+};
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+xfrm_stream_t *compressor_stream_bzip2_create(const compressor_config_t *cfg);
+
+xfrm_stream_t *decompressor_stream_bzip2_create(void);
+
+xfrm_stream_t *compressor_stream_xz_create(const compressor_config_t *cfg);
+
+xfrm_stream_t *decompressor_stream_xz_create(void);
+
+xfrm_stream_t *compressor_stream_gzip_create(const compressor_config_t *cfg);
+
+xfrm_stream_t *decompressor_stream_gzip_create(void);
+
+xfrm_stream_t *compressor_stream_zstd_create(const compressor_config_t *cfg);
+
+xfrm_stream_t *decompressor_stream_zstd_create(void);
+
+int xfrm_compressor_id_from_name(const char *name);
+
+int xfrm_compressor_id_from_magic(const void *data, size_t count);
+
+const char *xfrm_compressor_name_from_id(int id);
+
+xfrm_stream_t *compressor_stream_create(int id, const compressor_config_t *cfg);
+
+xfrm_stream_t *decompressor_stream_create(int id);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* XFRM_COMPRESS_H */
diff --git a/include/xfrm/stream.h b/include/xfrm/stream.h
new file mode 100644
index 0000000..01639cd
--- /dev/null
+++ b/include/xfrm/stream.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * stream.h
+ *
+ * Copyright (C) 2021 David Oberhollenzer <goliath@infraroot.at>
+ */
+#ifndef XFRM_STREAM_H
+#define XFRM_STREAM_H
+
+#include "sqfs/predef.h"
+
+typedef enum {
+ XFRM_STREAM_FLUSH_NONE = 0,
+ XFRM_STREAM_FLUSH_SYNC,
+ XFRM_STREAM_FLUSH_FULL,
+
+ XFRM_STREAM_FLUSH_COUNT,
+} XFRM_STREAM_FLUSH;
+
+typedef enum {
+ XFRM_STREAM_ERROR = -1,
+ XFRM_STREAM_OK = 0,
+ XFRM_STREAM_END = 1,
+ XFRM_STREAM_BUFFER_FULL = 2,
+} XFRM_STREAM_RESULT;
+
+typedef struct xfrm_stream_t xfrm_stream_t;
+
+struct xfrm_stream_t {
+ sqfs_object_t base;
+
+ int (*process_data)(xfrm_stream_t *stream,
+ const void *in, sqfs_u32 in_size,
+ void *out, sqfs_u32 out_size,
+ sqfs_u32 *in_read, sqfs_u32 *out_written,
+ int flush_mode);
+};
+
+#endif /* XFRM_STREAM_H */