mirror of
https://github.com/openharmony/multimedia_audio_lite.git
synced 2026-07-01 06:41:22 -04:00
mamingshuai
117 lines
3.1 KiB
C++
Executable File
117 lines
3.1 KiB
C++
Executable File
/*
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef AUDIO_SOURCE_H_
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#define AUDIO_SOURCE_H_
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#include <cstddef>
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#include <cstdint>
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#include <time.h>
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#include <memory>
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#include <vector>
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#include "media_errors.h"
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#include "media_info.h"
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#include "format.h"
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#include "audio_manager.h"
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namespace OHOS {
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namespace Audio {
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struct AudioSourceConfig {
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/**
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* 根据EnumDeviceBySourceType 枚举到的设备，选择设置当前audio source 要使用的设备.
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*/
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uint32_t deviceId;
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AudioCodecFormat audioFormat;
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int32_t sampleRate = 0;
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int32_t channelCount = 0;
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bool interleaved;
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AudioBitWidth bitWidth = BIT_WIDTH_16;
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AudioStreamType streamUsage;
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};
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class AudioSource {
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public:
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AudioSource();
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~AudioSource();
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/**
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* 根据输入源类型枚举当前支持的设备，包括设备名和设备ID.
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*/
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int32_t EnumDeviceBySourceType(AudioSourceType inputSource, std::vector<AudioDeviceDesc> &devices);
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/**
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* Obtains the minimum frame count (in BytesPerSample) required in the specified conditions.
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*
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* @param sampleRate Indicates the sampling rate (Hz).
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* @param channelCount Indicates the audio channel count.
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* @param audioFormat Indicates the audio data format.
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* @param frameCount the minimum frame count (in BytesPerSample).
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* @return Returns {@code true} if success; returns {@code false} otherwise.
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*/
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static bool GetMinFrameCount(int32_t sampleRate, int32_t channelCount,
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AudioCodecFormat audioFormat, size_t &frameCount);
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/**
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* Obtains the frame count (in BytesPerSample) required in the current conditions.
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*
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* @return Returns the frame count (in BytesPerSample); returns {@code -1} if an exception occurs.
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*/
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uint64_t GetFrameCount();
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/**
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* 根据AudioSourceConfig 初始化当前source.
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*/
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int32_t Initialize(const AudioSourceConfig &input);
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/**
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* 设置设备ID，需要切换设备时调用.
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*/
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int32_t SetInputDevice(uint32_t deviceId);
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/**
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* 获取当前的设备ID.
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*/
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int32_t GetCurrentDeviceId(uint32_t &deviceId);
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/**
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* 启动源.
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*/
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int32_t Start();
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/**
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* 读取源数据，返回实际读取大小.
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*/
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int32_t ReadFrame(uint8_t *buffer, size_t bufferBytes, bool isBlockingRead);
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/**
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* 停止源.
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*/
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int32_t Stop();
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private:
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int32_t InitCheck();
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private:
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bool initialized_;
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bool started_;
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AudioAdapter *audioAdapter_;
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AudioCapture *audioCapture_;
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AudioPort capturePort_ = {};
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};
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} // namespace Audio
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} // namespace OHOS
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#endif // AUDIO_SOURCE_H_
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