| /* 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_ */ |