1 /*
2  * Copyrightm (C) 2010 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 
17 #include <stdint.h>
18 
19 #ifndef __AUDIO_CODEC_H__
20 #define __AUDIO_CODEC_H__
21 
22 class AudioCodec
23 {
24 public:
25     const char *name;
26     // Needed by destruction through base class pointers.
~AudioCodec()27     virtual ~AudioCodec() {}
28     // Returns sampleCount or non-positive value if unsupported.
29     virtual int set(int sampleRate, const char *fmtp) = 0;
30     // Returns the length of payload in bytes.
31     virtual int encode(void *payload, int16_t *samples) = 0;
32     // Returns the number of decoded samples.
33     virtual int decode(int16_t *samples, int count, void *payload, int length) = 0;
34 };
35 
36 AudioCodec *newAudioCodec(const char *codecName);
37 
38 #endif
39