165ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian/* 265ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian * Copyright (C) 2007 The Android Open Source Project 365ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian * 465ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian * Licensed under the Apache License, Version 2.0 (the "License"); 565ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian * you may not use this file except in compliance with the License. 665ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian * You may obtain a copy of the License at 765ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian * 865ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian * http://www.apache.org/licenses/LICENSE-2.0 965ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian * 1065ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian * Unless required by applicable law or agreed to in writing, software 1165ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian * distributed under the License is distributed on an "AS IS" BASIS, 1265ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1365ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian * See the License for the specific language governing permissions and 1465ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian * limitations under the License. 1565ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian */ 1665ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian 1765ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian#ifndef ANDROID_AUDIO_BUFFER_PROVIDER_H 1865ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian#define ANDROID_AUDIO_BUFFER_PROVIDER_H 1965ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian 2065ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian#include <utils/Errors.h> 2165ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian 2265ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopiannamespace android { 2365ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian// ---------------------------------------------------------------------------- 2465ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian 2565ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopianclass AudioBufferProvider 2665ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian{ 2765ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopianpublic: 2865ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian 2965ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian struct Buffer { 3001c4ebf6b794493898114a502ed36de13137f7e5Glenn Kasten Buffer() : raw(NULL), frameCount(0) { } 3165ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian union { 3265ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian void* raw; 3365ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian short* i16; 3465ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian int8_t* i8; 3565ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian }; 3665ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian size_t frameCount; 3765ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian }; 3865ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian 3965ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian virtual ~AudioBufferProvider() {} 404ff14bae91075eb274eb1c2975982358946e7e63John Grossman 414ff14bae91075eb274eb1c2975982358946e7e63John Grossman // value representing an invalid presentation timestamp 4201c4ebf6b794493898114a502ed36de13137f7e5Glenn Kasten static const int64_t kInvalidPTS = 0x7FFFFFFFFFFFFFFFLL; // <stdint.h> is too painful 434ff14bae91075eb274eb1c2975982358946e7e63John Grossman 444ff14bae91075eb274eb1c2975982358946e7e63John Grossman // pts is the local time when the next sample yielded by getNextBuffer 454ff14bae91075eb274eb1c2975982358946e7e63John Grossman // will be rendered. 464ff14bae91075eb274eb1c2975982358946e7e63John Grossman // Pass kInvalidPTS if the PTS is unknown or not applicable. 4701c4ebf6b794493898114a502ed36de13137f7e5Glenn Kasten virtual status_t getNextBuffer(Buffer* buffer, int64_t pts = kInvalidPTS) = 0; 484ff14bae91075eb274eb1c2975982358946e7e63John Grossman 4965ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian virtual void releaseBuffer(Buffer* buffer) = 0; 5065ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian}; 5165ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian 5265ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian// ---------------------------------------------------------------------------- 5365ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian}; // namespace android 5465ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian 5565ab47156e1c7dfcd8cc4266253a5ff30219e7f0Mathias Agopian#endif // ANDROID_AUDIO_BUFFER_PROVIDER_H 56