mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-26 06:11:37 +00:00
108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
/* Copyright 2013 Google Inc. All Rights Reserved.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
|
|
Functions for streaming input and output.
|
|
*/
|
|
|
|
#ifndef BROTLI_DEC_STREAMS_H_
|
|
#define BROTLI_DEC_STREAMS_H_
|
|
|
|
#include <stdio.h>
|
|
#include "./types.h"
|
|
|
|
#if defined(__cplusplus) || defined(c_plusplus)
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* Function pointer type used to read len bytes into buf. Returns the */
|
|
/* number of bytes read or -1 on error. */
|
|
typedef int (*BrotliInputFunction)(void* data, uint8_t* buf, size_t len);
|
|
|
|
/* Input callback function with associated data. */
|
|
typedef struct {
|
|
BrotliInputFunction cb_;
|
|
void* data_;
|
|
} BrotliInput;
|
|
|
|
/* Reads len bytes into buf, using the in callback. */
|
|
static BROTLI_INLINE int BrotliRead(BrotliInput in, uint8_t* buf, size_t len) {
|
|
return in.cb_(in.data_, buf, len);
|
|
}
|
|
|
|
/* Function pointer type used to write len bytes into buf. Returns the */
|
|
/* number of bytes written or -1 on error. */
|
|
typedef int (*BrotliOutputFunction)(void* data, const uint8_t* buf, size_t len);
|
|
|
|
/* Output callback function with associated data. */
|
|
typedef struct {
|
|
BrotliOutputFunction cb_;
|
|
void* data_;
|
|
} BrotliOutput;
|
|
|
|
/* Writes len bytes into buf, using the out callback. */
|
|
static BROTLI_INLINE int BrotliWrite(BrotliOutput out,
|
|
const uint8_t* buf, size_t len) {
|
|
return out.cb_(out.data_, buf, len);
|
|
}
|
|
|
|
/* Memory region with position. */
|
|
typedef struct {
|
|
const uint8_t* buffer;
|
|
size_t length;
|
|
size_t pos;
|
|
} BrotliMemInput;
|
|
|
|
/* Input callback where *data is a BrotliMemInput struct. */
|
|
int BrotliMemInputFunction(void* data, uint8_t* buf, size_t count);
|
|
|
|
/* Returns an input callback that wraps the given memory region. */
|
|
BrotliInput BrotliInitMemInput(const uint8_t* buffer, size_t length,
|
|
BrotliMemInput* mem_input);
|
|
|
|
/* Output buffer with position. */
|
|
typedef struct {
|
|
uint8_t* buffer;
|
|
size_t length;
|
|
size_t pos;
|
|
} BrotliMemOutput;
|
|
|
|
/* Output callback where *data is a BrotliMemOutput struct. */
|
|
int BrotliMemOutputFunction(void* data, const uint8_t* buf, size_t count);
|
|
|
|
/* Returns an output callback that wraps the given memory region. */
|
|
BrotliOutput BrotliInitMemOutput(uint8_t* buffer, size_t length,
|
|
BrotliMemOutput* mem_output);
|
|
|
|
/* Input callback that reads from standard input. */
|
|
int BrotliStdinInputFunction(void* data, uint8_t* buf, size_t count);
|
|
BrotliInput BrotliStdinInput();
|
|
|
|
/* Output callback that writes to standard output. */
|
|
int BrotliStdoutOutputFunction(void* data, const uint8_t* buf, size_t count);
|
|
BrotliOutput BrotliStdoutOutput();
|
|
|
|
/* Input callback that reads from a file. */
|
|
int BrotliFileInputFunction(void* data, uint8_t* buf, size_t count);
|
|
BrotliInput BrotliFileInput(FILE* f);
|
|
|
|
/* Output callback that writes to a file. */
|
|
int BrotliFileOutputFunction(void* data, const uint8_t* buf, size_t count);
|
|
BrotliOutput BrotliFileOutput(FILE* f);
|
|
|
|
#if defined(__cplusplus) || defined(c_plusplus)
|
|
} /* extern "C" */
|
|
#endif
|
|
|
|
#endif /* BROTLI_DEC_STREAMS_H_ */
|