| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * 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. |
| */ |
| #ifndef _OUTPUTCHANNEL_H |
| #define _OUTPUTCHANNEL_H |
| |
| #include <stdarg.h> |
| |
| /* Callback function to print a printf-formatted string to a channel */ |
| typedef int (*OutputChannelPrintf) (void* opaque, const char* fmt, va_list ap); |
| |
| typedef struct OutputChannel OutputChannel; |
| |
| /* Allocates a new output channel */ |
| OutputChannel* output_channel_alloc(void* opaque, OutputChannelPrintf cb); |
| |
| /* Prints a printf-formatted string to the output channel */ |
| int output_channel_printf(OutputChannel* oc, const char* fmt, ...); |
| |
| /* Frees an output channel */ |
| void output_channel_free(OutputChannel* oc); |
| |
| /* Returns the number of bytes written to the channel */ |
| unsigned int output_channel_written(OutputChannel* oc); |
| |
| #endif /* _OUTPUTCHANNEL_H */ |