1 /* 2 * Copyright (C) 2018 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 #ifndef AUDIO_VBUFFER_H 18 #define AUDIO_VBUFFER_H 19 20 #include <pthread.h> 21 22 typedef struct audio_vbuffer { 23 pthread_mutex_t lock; 24 uint8_t *data; 25 size_t frame_size; 26 size_t frame_count; 27 size_t head; 28 size_t tail; 29 size_t live; 30 } audio_vbuffer_t; 31 32 int audio_vbuffer_init(audio_vbuffer_t *audio_vbuffer, size_t frame_count, 33 size_t frame_size); 34 35 int audio_vbuffer_destroy(audio_vbuffer_t *audio_vbuffer); 36 37 int audio_vbuffer_live(audio_vbuffer_t *audio_vbuffer); 38 39 int audio_vbuffer_dead(audio_vbuffer_t *audio_vbuffer); 40 41 size_t audio_vbuffer_write(audio_vbuffer_t *audio_vbuffer, const void *buffer, 42 size_t frame_count); 43 44 size_t audio_vbuffer_read(audio_vbuffer_t *audio_vbuffer, void *buffer, 45 size_t frame_count); 46 47 #endif // AUDIO_VBUFFER_H 48