1 /*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 #ifndef __QEMU_PIPE_STREAM_H
17 #define __QEMU_PIPE_STREAM_H
18 
19 /* This file implements an IOStream that uses a QEMU fast-pipe
20  * to communicate with the emulator's 'opengles' service. See
21  * <hardware/qemu_pipe.h> for more details.
22  */
23 #include <stdlib.h>
24 #include "IOStream.h"
25 
26 class QemuPipeStream : public IOStream {
27 public:
28     typedef enum { ERR_INVALID_SOCKET = -1000 } QemuPipeStreamError;
29 
30     explicit QemuPipeStream(size_t bufsize = 10000);
31     ~QemuPipeStream();
32     int connect(void);
33 
34     virtual void *allocBuffer(size_t minSize);
35     virtual int commitBuffer(size_t size);
36     virtual const unsigned char *readFully( void *buf, size_t len);
37     virtual const unsigned char *read( void *buf, size_t *inout_len);
38 
valid()39     bool valid() { return m_sock >= 0; }
40     int recv(void *buf, size_t len);
41 
42     virtual int writeFully(const void *buf, size_t len);
43 
44 private:
45     int m_sock;
46     size_t m_bufsize;
47     unsigned char *m_buf;
48     QemuPipeStream(int sock, size_t bufSize);
49 };
50 
51 #endif
52