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. 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
