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compress: compressor: convert b_compressor to a b_object interface

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This commit is contained in:
max 🍓
2025-10-28 15:19:30 +00:00
parent b58015baff
commit f3dd0ddd48
8 changed files with 386 additions and 275 deletions
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254
compress/compressor.c
View File

@@ -1,145 +1,239 @@
#include "compressor.h"
#include "function.h"
#include <assert.h>
#include <blue/compress/compressor.h>
#include <blue/core/ringbuffer.h>
#include <stdlib.h>
#include <string.h>
enum b_status b_compressor_create(
const struct b_compression_function *func, enum b_compression_mode mode,
struct b_ringbuffer *inbuf, struct b_ringbuffer *outbuf,
struct b_compressor **out)
#define COMPRESSOR_DISPATCH_STATIC(func, compressor, ...) \
do { \
struct compressor_data _compressor; \
enum b_status status \
= compressor_get_data(compressor, &_compressor); \
if (!B_OK(status)) { \
return status; \
} \
return func(&_compressor, __VA_ARGS__); \
} while (0)
#define COMPRESSOR_DISPATCH_STATIC_0(func, compressor) \
do { \
struct compressor_data _compressor; \
enum b_status status \
= compressor_get_data(compressor, &_compressor); \
if (!B_OK(status)) { \
return status; \
} \
return func(&_compressor); \
} while (0)
/*** PRIVATE DATA *************************************************************/
struct compressor_data {
b_compressor *c_obj;
b_compressor_class *c_ops;
b_compressor_data *c_data;
};
/*** PRIVATE FUNCTIONS ********************************************************/
static enum b_status compressor_get_data(
b_compressor *compressor, struct compressor_data *out)
{
size_t ctx_size = sizeof(struct b_compressor) + func->f_ctx_size;
struct b_compressor *compressor = malloc(ctx_size);
if (!compressor) {
return B_ERR_NO_MEMORY;
out->c_obj = compressor;
return b_object_get_data(
compressor, B_TYPE_COMPRESSOR, NULL, (void **)&out->c_data,
(void **)&out->c_ops);
}
memset(compressor, 0x0, ctx_size);
compressor->c_func = func;
compressor->c_in = inbuf;
compressor->c_out = outbuf;
compressor->c_mode = mode;
enum b_status status = B_SUCCESS;
if (func->f_init) {
status = func->f_init(compressor);
}
if (!B_OK(status)) {
free(compressor);
compressor = NULL;
}
*out = compressor;
return status;
}
enum b_status b_compressor_destroy(struct b_compressor *compressor)
static enum b_status compressor_get_mode(
struct compressor_data *p, enum b_compressor_mode *out)
{
enum b_status status = B_SUCCESS;
if (compressor->c_func->f_fini) {
status = compressor->c_func->f_fini(compressor);
if (out) {
*out = p->c_data->c_mode;
}
if (!B_OK(status)) {
return status;
}
free(compressor);
return B_SUCCESS;
}
static enum b_status compress(struct b_compressor *compressor)
static enum b_status compressor_set_mode(
struct compressor_data *p, enum b_compressor_mode mode)
{
if (compressor->c_mode != B_COMPRESSION_MODE_COMPRESS) {
return B_ERR_BAD_STATE;
}
if (!compressor->c_func->f_compress) {
if (!p->c_ops->c_set_mode) {
return B_ERR_NOT_SUPPORTED;
}
return compressor->c_func->f_compress(compressor);
return p->c_ops->c_set_mode(p->c_obj, mode);
}
static enum b_status decompress(struct b_compressor *compressor)
static enum b_status compressor_set_buffer(
struct compressor_data *p, b_ringbuffer *inbuf, b_ringbuffer *outbuf)
{
if (compressor->c_mode != B_COMPRESSION_MODE_DECOMPRESS) {
p->c_data->c_in = inbuf;
p->c_data->c_out = outbuf;
return B_SUCCESS;
}
static enum b_status compress(struct compressor_data *p)
{
if (p->c_data->c_mode != B_COMPRESSOR_MODE_COMPRESS) {
return B_ERR_BAD_STATE;
}
if (!compressor->c_func->f_decompress) {
if (!p->c_ops->c_compress) {
return B_ERR_NOT_SUPPORTED;
}
return compressor->c_func->f_decompress(compressor);
return p->c_ops->c_compress(p->c_obj);
}
enum b_status b_compressor_step(struct b_compressor *compressor)
static enum b_status decompress(struct compressor_data *p)
{
switch (compressor->c_mode) {
case B_COMPRESSION_MODE_COMPRESS:
return compress(compressor);
case B_COMPRESSION_MODE_DECOMPRESS:
return decompress(compressor);
if (p->c_data->c_mode != B_COMPRESSOR_MODE_DECOMPRESS) {
return B_ERR_BAD_STATE;
}
if (!p->c_ops->c_decompress) {
return B_ERR_NOT_SUPPORTED;
}
return p->c_ops->c_decompress(p->c_obj);
}
static enum b_status compressor_step(struct compressor_data *p)
{
switch (p->c_data->c_mode) {
case B_COMPRESSOR_MODE_COMPRESS:
return compress(p);
case B_COMPRESSOR_MODE_DECOMPRESS:
return decompress(p);
default:
return B_ERR_BAD_STATE;
}
}
enum b_status b_compressor_end(struct b_compressor *compressor)
static enum b_status compressor_end(struct compressor_data *p)
{
if (compressor->c_mode != B_COMPRESSION_MODE_COMPRESS) {
if (p->c_data->c_mode != B_COMPRESSOR_MODE_COMPRESS) {
return B_SUCCESS;
}
if (!compressor->c_func->f_compress_end) {
if (!p->c_ops->c_compress_end) {
return B_ERR_NOT_SUPPORTED;
}
while (b_ringbuffer_available_data_remaining(compressor->c_in)) {
if (!b_ringbuffer_write_capacity_remaining(compressor->c_out)) {
while (b_ringbuffer_available_data_remaining(p->c_data->c_in)) {
if (!b_ringbuffer_write_capacity_remaining(p->c_data->c_out)) {
return B_ERR_NO_SPACE;
}
enum b_status status = b_compressor_step(compressor);
enum b_status status = compressor_step(p);
if (!B_OK(status)) {
return status;
}
}
return compressor->c_func->f_compress_end(compressor);
return p->c_ops->c_compress_end(p->c_obj);
}
enum b_status b_compressor_reset(struct b_compressor *compressor)
static enum b_status compressor_reset(struct compressor_data *p)
{
compressor->c_flags &= ~COMPRESSOR_EOF;
p->c_data->c_flags &= ~B_COMPRESSOR_EOF;
if (compressor->c_func->f_reset) {
return compressor->c_func->f_reset(compressor);
if (p->c_ops->c_reset) {
return p->c_ops->c_reset(p->c_obj);
}
return B_SUCCESS;
}
bool b_compressor_eof(const struct b_compressor *compressor)
static bool compressor_eof(const struct compressor_data *p)
{
return (compressor->c_flags & COMPRESSOR_EOF) != 0;
return (p->c_data->c_flags & B_COMPRESSOR_EOF) != 0;
}
void *b_compressor_get_function_ctx(struct b_compressor *compressor)
/*** PUBLIC FUNCTIONS *********************************************************/
enum b_status b_compressor_get_buffer_size(
b_type type, b_compressor_mode mode, size_t *inbuf_size, size_t *outbuf_size)
{
assert(compressor->c_func->f_buffer_size > 0);
unsigned char *p = (unsigned char *)compressor;
p += sizeof *compressor;
return p;
b_class *c = b_class_get(type);
if (!c) {
return B_ERR_INVALID_ARGUMENT;
}
b_compressor_class *ops = b_class_get_interface(c, B_TYPE_COMPRESSOR);
if (!ops) {
return B_ERR_INVALID_ARGUMENT;
}
if (!ops->c_buffer_size) {
return B_ERR_NOT_SUPPORTED;
}
return ops->c_buffer_size(mode, inbuf_size, outbuf_size);
}
enum b_status b_compressor_get_mode(
const b_compressor *compressor, enum b_compressor_mode *out)
{
COMPRESSOR_DISPATCH_STATIC(
compressor_get_mode, (b_compressor *)compressor, out);
}
enum b_status b_compressor_set_mode(
b_compressor *compressor, enum b_compressor_mode mode)
{
COMPRESSOR_DISPATCH_STATIC(compressor_set_mode, compressor, mode);
}
enum b_status b_compressor_set_buffer(
b_compressor *compressor, b_ringbuffer *inbuf, b_ringbuffer *outbuf)
{
COMPRESSOR_DISPATCH_STATIC(compressor_set_buffer, compressor, inbuf, outbuf);
}
enum b_status b_compressor_step(b_compressor *compressor)
{
COMPRESSOR_DISPATCH_STATIC_0(compressor_step, compressor);
}
enum b_status b_compressor_end(b_compressor *compressor)
{
COMPRESSOR_DISPATCH_STATIC_0(compressor_end, compressor);
}
enum b_status b_compressor_reset(b_compressor *compressor)
{
COMPRESSOR_DISPATCH_STATIC_0(compressor_reset, compressor);
}
bool b_compressor_eof(const b_compressor *compressor)
{
COMPRESSOR_DISPATCH_STATIC_0(compressor_eof, (b_compressor *)compressor);
}
/*** VIRTUAL FUNCTIONS ********************************************************/
static void compressor_init(b_object *obj, void *priv)
{
}
static void compressor_fini(b_object *obj, void *priv)
{
}
/*** CLASS DEFINITION *********************************************************/
B_TYPE_CLASS_DEFINITION_BEGIN(b_compressor)
B_TYPE_CLASS_INTERFACE_BEGIN(b_object, B_TYPE_OBJECT)
B_INTERFACE_ENTRY(to_string) = NULL;
B_TYPE_CLASS_INTERFACE_END(b_object, B_TYPE_OBJECT)
B_TYPE_CLASS_DEFINITION_END(b_compressor)
B_TYPE_DEFINITION_BEGIN(b_compressor)
B_TYPE_ID(0x452ee0f9, 0xfe12, 0x48a1, 0xb596, 0xad5b7a3940e7);
B_TYPE_CLASS(b_compressor_class);
B_TYPE_INSTANCE_PROTECTED(b_compressor_data);
B_TYPE_INSTANCE_INIT(compressor_init);
B_TYPE_INSTANCE_FINI(compressor_fini);
B_TYPE_DEFINITION_END(b_compressor)

22
compress/compressor.h
View File

@@ -1,22 +0,0 @@
#ifndef _COMPRESSOR_H_
#define _COMPRESSOR_H_
#include <blue/compress/compressor.h>
#include <blue/compress/function.h>
struct b_ringbuffer;
enum compressor_flags {
COMPRESSOR_EOF = 0x01u,
};
struct b_compressor {
enum compressor_flags c_flags;
enum b_compression_mode c_mode;
const struct b_compression_function *c_func;
struct b_ringbuffer *c_in, *c_out;
};
extern void *b_compressor_get_function_ctx(struct b_compressor *compressor);
#endif

48
compress/function.c
View File

@@ -1,48 +0,0 @@
#include "function.h"
#include <blue/compress/compressor.h>
#include <blue/compress/function.h>
#ifdef B_COMPRESSOR_SUPPORTED_ZSTD
extern const struct b_compression_function z__b_compression_function_zstd;
#endif
static const struct b_compression_function *compressor_functions[] = {
#ifdef B_COMPRESSOR_SUPPORTED_ZSTD
[B_COMPRESSOR_FUNCTION_ZSTD] = &z__b_compression_function_zstd,
#endif
};
static const size_t nr_compressor_functions
= sizeof compressor_functions / sizeof compressor_functions[0];
const struct b_compression_function *b_compression_function_get_by_id(
enum b_compression_function_id id)
{
if (id < 0 || id >= nr_compressor_functions) {
return NULL;
}
return compressor_functions[id];
}
enum b_status b_compression_function_get_buffer_size(
const struct b_compression_function *func, enum b_compression_mode mode,
size_t *inbuf_size, size_t *outbuf_size)
{
if (!func->f_buffer_size) {
return B_ERR_NOT_SUPPORTED;
}
size_t in = 0, out = 0;
enum b_status status = func->f_buffer_size(mode, &in, &out);
if (inbuf_size) {
*inbuf_size = in;
}
if (outbuf_size) {
*outbuf_size = out;
}
return status;
}

24
compress/function.h
View File

@@ -1,24 +0,0 @@
#ifndef _FUNCTION_H_
#define _FUNCTION_H_
#include <blue/compress/compressor.h>
#include <blue/core/status.h>
#include <stddef.h>
struct b_compressor;
struct b_compression_function {
const char *f_name;
size_t f_ctx_size;
enum b_status (*f_buffer_size)(enum b_compression_mode, size_t *, size_t *);
enum b_status (*f_init)(struct b_compressor *);
enum b_status (*f_fini)(struct b_compressor *);
enum b_status (*f_reset)(struct b_compressor *);
enum b_status (*f_compress)(struct b_compressor *);
enum b_status (*f_compress_end)(struct b_compressor *);
enum b_status (*f_decompress)(struct b_compressor *);
};
#endif

206
compress/function/zstd.c
View File

@@ -1,25 +1,27 @@
#include "../compressor.h"
#include "../function.h"
#include <blue/compress/zstd.h>
#include <blue/core/ringbuffer.h>
#include <zstd.h>
struct zstd_ctx {
/*** PRIVATE DATA *************************************************************/
struct b_zstd_compressor_p {
union {
ZSTD_CCtx *zstd_c;
ZSTD_DCtx *zstd_d;
};
};
static enum b_status buffer_size(
enum b_compression_mode mode, size_t *inbuf_size, size_t *outbuf_size)
/*** PUBLIC FUNCTIONS *********************************************************/
b_status b_zstd_compressor_get_buffer_size(
b_compressor_mode mode, size_t *inbuf_size, size_t *outbuf_size)
{
switch (mode) {
case B_COMPRESSION_MODE_COMPRESS:
case B_COMPRESSOR_MODE_COMPRESS:
*inbuf_size = ZSTD_CStreamInSize();
*outbuf_size = ZSTD_CStreamOutSize();
break;
case B_COMPRESSION_MODE_DECOMPRESS:
case B_COMPRESSOR_MODE_DECOMPRESS:
*inbuf_size = ZSTD_DStreamInSize();
*outbuf_size = ZSTD_DStreamOutSize();
break;
@@ -30,54 +32,44 @@ static enum b_status buffer_size(
return B_SUCCESS;
}
static enum b_status init(struct b_compressor *compressor)
/*** VIRTUAL FUNCTIONS ********************************************************/
static void zstd_compressor_init(b_object *obj, void *priv)
{
struct zstd_ctx *ctx = b_compressor_get_function_ctx(compressor);
switch (compressor->c_mode) {
case B_COMPRESSION_MODE_COMPRESS:
ctx->zstd_c = ZSTD_createCCtx();
if (!ctx->zstd_c) {
return B_ERR_NO_MEMORY;
}
break;
case B_COMPRESSION_MODE_DECOMPRESS:
ctx->zstd_d = ZSTD_createDCtx();
if (!ctx->zstd_d) {
return B_ERR_NO_MEMORY;
}
break;
default:
return B_ERR_BAD_STATE;
}
return B_SUCCESS;
}
static enum b_status fini(struct b_compressor *compressor)
static void zstd_compressor_fini(b_object *obj, void *priv)
{
struct zstd_ctx *ctx = b_compressor_get_function_ctx(compressor);
switch (compressor->c_mode) {
case B_COMPRESSION_MODE_COMPRESS:
b_compressor_data *c = b_object_get_protected(obj, B_TYPE_COMPRESSOR);
struct b_zstd_compressor_p *ctx = priv;
switch (c->c_mode) {
case B_COMPRESSOR_MODE_COMPRESS:
ZSTD_freeCCtx(ctx->zstd_c);
break;
case B_COMPRESSION_MODE_DECOMPRESS:
case B_COMPRESSOR_MODE_DECOMPRESS:
ZSTD_freeDCtx(ctx->zstd_d);
break;
default:
return B_ERR_BAD_STATE;
break;
}
}
return B_SUCCESS;
}
static enum b_status reset(struct b_compressor *compressor)
static enum b_status reset(b_compressor *compressor)
{
struct zstd_ctx *ctx = b_compressor_get_function_ctx(compressor);
switch (compressor->c_mode) {
case B_COMPRESSION_MODE_COMPRESS:
struct b_zstd_compressor_p *ctx
= b_object_get_private(compressor, B_TYPE_ZSTD_COMPRESSOR);
b_compressor_data *data
= b_object_get_protected(compressor, B_TYPE_COMPRESSOR);
if (!ctx || !data) {
return B_ERR_INVALID_ARGUMENT;
}
switch (data->c_mode) {
case B_COMPRESSOR_MODE_COMPRESS:
ZSTD_CCtx_reset(ctx->zstd_c, ZSTD_reset_session_only);
break;
case B_COMPRESSION_MODE_DECOMPRESS:
case B_COMPRESSOR_MODE_DECOMPRESS:
ZSTD_DCtx_reset(ctx->zstd_d, ZSTD_reset_session_only);
break;
default:
@@ -87,12 +79,20 @@ static enum b_status reset(struct b_compressor *compressor)
return B_SUCCESS;
}
static enum b_status compress(struct b_compressor *compressor)
static enum b_status compress(b_compressor *compressor)
{
enum b_status status = B_SUCCESS;
struct zstd_ctx *ctx = b_compressor_get_function_ctx(compressor);
struct b_ringbuffer *in = compressor->c_in;
struct b_ringbuffer *out = compressor->c_out;
struct b_zstd_compressor_p *ctx
= b_object_get_private(compressor, B_TYPE_ZSTD_COMPRESSOR);
b_compressor_data *data
= b_object_get_protected(compressor, B_TYPE_COMPRESSOR);
if (!ctx || !data) {
return B_ERR_INVALID_ARGUMENT;
}
b_ringbuffer *in = data->c_in;
b_ringbuffer *out = data->c_out;
if (b_ringbuffer_available_data_remaining(in) == 0) {
return B_ERR_NO_DATA;
@@ -156,12 +156,19 @@ static enum b_status compress(struct b_compressor *compressor)
return status;
}
static enum b_status compress_end(struct b_compressor *compressor)
static enum b_status compress_end(b_compressor *compressor)
{
enum b_status status = B_SUCCESS;
struct zstd_ctx *ctx = b_compressor_get_function_ctx(compressor);
struct b_zstd_compressor_p *ctx
= b_object_get_private(compressor, B_TYPE_ZSTD_COMPRESSOR);
b_compressor_data *data
= b_object_get_protected(compressor, B_TYPE_COMPRESSOR);
struct b_ringbuffer *out = compressor->c_out;
if (!ctx || !data) {
return B_ERR_INVALID_ARGUMENT;
}
b_ringbuffer *out = data->c_out;
if (b_ringbuffer_write_capacity_remaining(out) == 0) {
return B_ERR_NO_SPACE;
}
@@ -192,7 +199,7 @@ static enum b_status compress_end(struct b_compressor *compressor)
}
if (ret == 0) {
compressor->c_flags |= COMPRESSOR_EOF;
data->c_flags |= B_COMPRESSOR_EOF;
finished = true;
}
} while (!finished && z_out.pos < z_out.size);
@@ -203,12 +210,20 @@ static enum b_status compress_end(struct b_compressor *compressor)
return status;
}
static enum b_status decompress(struct b_compressor *compressor)
static enum b_status decompress(b_compressor *compressor)
{
enum b_status status = B_SUCCESS;
struct zstd_ctx *ctx = b_compressor_get_function_ctx(compressor);
struct b_ringbuffer *in = compressor->c_in;
struct b_ringbuffer *out = compressor->c_out;
struct b_zstd_compressor_p *ctx
= b_object_get_private(compressor, B_TYPE_ZSTD_COMPRESSOR);
b_compressor_data *data
= b_object_get_protected(compressor, B_TYPE_COMPRESSOR);
if (!ctx || !data) {
return B_ERR_INVALID_ARGUMENT;
}
b_ringbuffer *in = data->c_in;
b_ringbuffer *out = data->c_out;
if (b_ringbuffer_available_data_remaining(in) == 0) {
return B_ERR_NO_DATA;
@@ -220,7 +235,7 @@ static enum b_status decompress(struct b_compressor *compressor)
size_t nr_consumed = 0;
while (!(compressor->c_flags & COMPRESSOR_EOF)) {
while (!(data->c_flags & B_COMPRESSOR_EOF)) {
size_t in_available = 0, out_capacity = 0;
const void *in_buf = NULL;
void *out_buf = NULL;
@@ -258,7 +273,7 @@ static enum b_status decompress(struct b_compressor *compressor)
}
if (ret == 0) {
compressor->c_flags |= COMPRESSOR_EOF;
data->c_flags |= B_COMPRESSOR_EOF;
break;
}
} while (z_in.pos < z_in.size && z_out.pos < z_out.size);
@@ -277,14 +292,71 @@ static enum b_status decompress(struct b_compressor *compressor)
return status;
}
const struct b_compression_function z__b_compression_function_zstd = {
.f_name = "zstd",
.f_ctx_size = sizeof(struct zstd_ctx),
.f_buffer_size = buffer_size,
.f_init = init,
.f_fini = fini,
.f_reset = reset,
.f_compress = compress,
.f_compress_end = compress_end,
.f_decompress = decompress,
};
static enum b_status set_mode(b_compressor *compressor, b_compressor_mode mode)
{
struct b_zstd_compressor_p *ctx
= b_object_get_private(compressor, B_TYPE_ZSTD_COMPRESSOR);
b_compressor_data *data
= b_object_get_protected(compressor, B_TYPE_COMPRESSOR);
if (!ctx || !data) {
return B_ERR_INVALID_ARGUMENT;
}
if (mode == data->c_mode) {
return B_SUCCESS;
}
switch (data->c_mode) {
case B_COMPRESSOR_MODE_COMPRESS:
ZSTD_freeCCtx(ctx->zstd_c);
break;
case B_COMPRESSOR_MODE_DECOMPRESS:
ZSTD_freeDCtx(ctx->zstd_d);
break;
default:
break;
}
data->c_mode = mode;
switch (data->c_mode) {
case B_COMPRESSOR_MODE_COMPRESS:
ctx->zstd_c = ZSTD_createCCtx();
break;
case B_COMPRESSOR_MODE_DECOMPRESS:
ctx->zstd_d = ZSTD_createDCtx();
break;
default:
return B_ERR_INVALID_ARGUMENT;
}
return B_SUCCESS;
}
/*** CLASS DEFINITION *********************************************************/
B_TYPE_CLASS_DEFINITION_BEGIN(b_zstd_compressor)
B_TYPE_CLASS_INTERFACE_BEGIN(b_object, B_TYPE_OBJECT)
B_INTERFACE_ENTRY(to_string) = NULL;
B_TYPE_CLASS_INTERFACE_END(b_object, B_TYPE_OBJECT)
B_TYPE_CLASS_INTERFACE_BEGIN(b_compressor, B_TYPE_COMPRESSOR)
B_INTERFACE_ENTRY(c_buffer_size)
= b_zstd_compressor_get_buffer_size;
B_INTERFACE_ENTRY(c_compress) = compress;
B_INTERFACE_ENTRY(c_compress_end) = compress_end;
B_INTERFACE_ENTRY(c_decompress) = decompress;
B_INTERFACE_ENTRY(c_reset) = reset;
B_INTERFACE_ENTRY(c_set_mode) = set_mode;
B_TYPE_CLASS_INTERFACE_END(b_compressor, B_TYPE_COMPRESSOR)
B_TYPE_CLASS_DEFINITION_END(b_zstd_compressor)
B_TYPE_DEFINITION_BEGIN(b_zstd_compressor)
B_TYPE_ID(0x51d437fc, 0xe789, 0x4105, 0xbac7, 0xe6b3f45df198);
B_TYPE_EXTENDS(B_TYPE_COMPRESSOR);
B_TYPE_CLASS(b_zstd_compressor_class);
B_TYPE_INSTANCE_PRIVATE(struct b_zstd_compressor_p);
B_TYPE_INSTANCE_INIT(zstd_compressor_init);
B_TYPE_INSTANCE_FINI(zstd_compressor_fini);
B_TYPE_DEFINITION_END(b_zstd_compressor)

54
compress/include/blue/compress/compressor.h
View File

@@ -1,29 +1,67 @@
#ifndef BLUELIB_COMPRESS_COMPRESSOR_H_
#define BLUELIB_COMPRESS_COMPRESSOR_H_
#ifndef BLUE_COMPRESS_COMPRESSOR_H_
#define BLUE_COMPRESS_COMPRESSOR_H_
#include <blue/core/macros.h>
#include <blue/core/misc.h>
#include <blue/core/ringbuffer.h>
#include <blue/core/status.h>
#include <stdbool.h>
struct b_ringbuffer;
struct b_compression_function;
B_DECLS_BEGIN;
enum b_compression_mode;
typedef enum b_compressor_mode {
B_COMPRESSOR_MODE_NONE = 0,
B_COMPRESSOR_MODE_COMPRESS,
B_COMPRESSOR_MODE_DECOMPRESS,
} b_compressor_mode;
typedef struct b_compressor b_compressor;
typedef enum b_compressor_flags {
B_COMPRESSOR_EOF = 0x01u,
} b_compressor_flags;
#define B_TYPE_COMPRESSOR (b_compressor_get_type())
B_DECLARE_TYPE(b_compressor);
B_TYPE_CLASS_DECLARATION_BEGIN(b_compressor)
b_status (*c_buffer_size)(b_compressor_mode, size_t *, size_t *);
b_status (*c_set_mode)(b_compressor *, b_compressor_mode);
b_status (*c_compress)(b_compressor *);
b_status (*c_compress_end)(b_compressor *);
b_status (*c_decompress)(b_compressor *);
b_status (*c_reset)(b_compressor *);
B_TYPE_CLASS_DECLARATION_END(b_compressor)
typedef struct b_compressor_data {
b_compressor_flags c_flags;
b_compressor_mode c_mode;
b_ringbuffer *c_in, *c_out;
} b_compressor_data;
BLUE_API b_type b_compressor_get_type(void);
#if 0
BLUE_API b_status b_compressor_create(
const struct b_compression_function *func, enum b_compression_mode mode,
struct b_ringbuffer *inbuf, struct b_ringbuffer *outbuf,
b_compressor **out);
BLUE_API b_status b_compressor_destroy(b_compressor *compressor);
#endif
BLUE_API b_status b_compressor_get_buffer_size(
const b_compressor *compressor, size_t *inbuf_size, size_t *outbuf_size);
b_type type, b_compressor_mode mode, size_t *inbuf_size,
size_t *outbuf_size);
BLUE_API b_status b_compressor_get_mode(
const b_compressor *compressor, b_compressor_mode *out);
BLUE_API b_status b_compressor_set_mode(
b_compressor *compressor, b_compressor_mode mode);
BLUE_API b_status b_compressor_set_buffer(
b_compressor *compressor, b_ringbuffer *inbuf, b_ringbuffer *outbuf);
BLUE_API b_status b_compressor_step(b_compressor *compressor);
BLUE_API b_status b_compressor_end(b_compressor *compressor);
BLUE_API b_status b_compressor_reset(b_compressor *compressor);
BLUE_API bool b_compressor_eof(const b_compressor *compressor);
B_DECLS_END;
#endif

27
compress/include/blue/compress/function.h
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@@ -1,27 +0,0 @@
#ifndef BLUELIB_COMPRESS_FUNCTION_H_
#define BLUELIB_COMPRESS_FUNCTION_H_
#include <blue/core/misc.h>
#include <blue/core/status.h>
enum b_compressor_mode;
typedef struct b_compression_function b_compression_function;
typedef enum b_compression_function_id {
B_COMPRESSOR_FUNCTION_NONE = 0,
B_COMPRESSOR_FUNCTION_ZSTD,
} b_compression_function_id;
typedef enum b_compression_mode {
B_COMPRESSION_MODE_COMPRESS,
B_COMPRESSION_MODE_DECOMPRESS,
} b_compression_mode;
BLUE_API const b_compression_function *b_compression_function_get_by_id(
b_compression_function_id id);
BLUE_API b_status b_compression_function_get_buffer_size(
const b_compression_function *func, enum b_compression_mode mode,
size_t *inbuf_size, size_t *outbuf_size);
#endif

28
compress/include/blue/compress/zstd.h Normal file
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@@ -0,0 +1,28 @@
#ifndef BLUE_COMPRESS_ZSTD_H_
#define BLUE_COMPRESS_ZSTD_H_
#include <blue/compress/compressor.h>
#include <blue/core/macros.h>
#include <blue/core/misc.h>
#include <blue/core/status.h>
#include <stdbool.h>
B_DECLS_BEGIN;
#define B_TYPE_ZSTD_COMPRESSOR (b_zstd_compressor_get_type())
B_DECLARE_TYPE(b_zstd_compressor);
B_TYPE_CLASS_DECLARATION_BEGIN(b_zstd_compressor)
B_TYPE_CLASS_DECLARATION_END(b_compressor)
BLUE_API b_type b_zstd_compressor_get_type(void);
BLUE_API b_status b_zstd_compressor_get_buffer_size(
b_compressor_mode mode, size_t *inbuf_size, size_t *outbuf_size);
B_TYPE_DEFAULT_CONSTRUCTOR(b_zstd_compressor, B_TYPE_ZSTD_COMPRESSOR);
B_DECLS_END;
#endif