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未验证 提交 95a6f0b7 编写于 作者: L liyan 提交者： Gitee
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Signed-off-by: Nli-yan339 <liyan339@h-partners.com>
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zh-cn/device-dev/reference/hdi-apis/_audio_render.md
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| attr | 音频属性能力接口，详情参考[AudioAttribute](_audio_attribute.md) |
| scene | 音频场景能力接口，详情参考[AudioScene](_audio_scene.md) |
| volume | 音频音量能力接口，详情参考[AudioVolume](_audio_volume.md) |
| (&nbsp;[GetLatency](#getlatency)&nbsp;)(struct&nbsp;[ERROR:Invalid&nbsp;link:zh-cn_topic_0000001357381989.xml#xref1137711430083931,link:zh-cn_topic_0000001357381989.xml](zh-cn_topic_0000001357381989.xml)&nbsp;\*render,&nbsp;uint32_t&nbsp;\*ms) | 获取音频硬件驱动估计的延迟时间&nbsp;[更多...](#getlatency) |
| (&nbsp;[RenderFrame](#renderframe)&nbsp;)(struct&nbsp;[ERROR:Invalid&nbsp;link:zh-cn_topic_0000001357381989.xml#xref1032115116083931,link:zh-cn_topic_0000001357381989.xml](zh-cn_topic_0000001357381989.xml)&nbsp;\*render,&nbsp;const&nbsp;void&nbsp;\*frame,&nbsp;uint64_t&nbsp;requestBytes,&nbsp;uint64_t&nbsp;\*replyBytes) | 往音频驱动中播放（render）一帧输出数据（放音，音频下行数据）&nbsp;[更多...](#renderframe) |
| (&nbsp;[GetRenderPosition](#getrenderposition)&nbsp;)(struct&nbsp;[ERROR:Invalid&nbsp;link:zh-cn_topic_0000001357381989.xml#xref1361225145083931,link:zh-cn_topic_0000001357381989.xml](zh-cn_topic_0000001357381989.xml)&nbsp;\*render,&nbsp;uint64_t&nbsp;\*frames,&nbsp;struct&nbsp;[AudioTimeStamp](_audio_time_stamp.md)&nbsp;\*time) | 获取音频输出帧数的上一次计数&nbsp;[更多...](#getrenderposition) |
| (&nbsp;[SetRenderSpeed](#setrenderspeed)&nbsp;)(struct&nbsp;[ERROR:Invalid&nbsp;link:zh-cn_topic_0000001357381989.xml#xref298100406083931,link:zh-cn_topic_0000001357381989.xml](zh-cn_topic_0000001357381989.xml)&nbsp;\*render,&nbsp;float&nbsp;speed) | 设置一个音频的播放速度&nbsp;[更多...](#setrenderspeed) |
| (&nbsp;[GetRenderSpeed](#getrenderspeed)&nbsp;)(struct&nbsp;[ERROR:Invalid&nbsp;link:zh-cn_topic_0000001357381989.xml#xref1265100196083931,link:zh-cn_topic_0000001357381989.xml](zh-cn_topic_0000001357381989.xml)&nbsp;\*render,&nbsp;float&nbsp;\*speed) | 获取一个音频当前的播放速度&nbsp;[更多...](#getrenderspeed) |
| (&nbsp;[SetChannelMode](#setchannelmode)&nbsp;)(struct&nbsp;[ERROR:Invalid&nbsp;link:zh-cn_topic_0000001357381989.xml#xref1614877322083931,link:zh-cn_topic_0000001357381989.xml](zh-cn_topic_0000001357381989.xml)&nbsp;\*render,&nbsp;enum&nbsp;[AudioChannelMode](_audio.md#audiochannelmode)&nbsp;mode) | 设置音频播放的通道模式&nbsp;[更多...](#setchannelmode) |
| (&nbsp;[GetChannelMode](#getchannelmode)&nbsp;)(struct&nbsp;[ERROR:Invalid&nbsp;link:zh-cn_topic_0000001357381989.xml#xref1553230681083931,link:zh-cn_topic_0000001357381989.xml](zh-cn_topic_0000001357381989.xml)&nbsp;\*render,&nbsp;enum&nbsp;[AudioChannelMode](_audio.md#audiochannelmode)&nbsp;\*mode) | 获取音频播放当前的通道模式&nbsp;[更多...](#getchannelmode) |
| (&nbsp;[RegCallback](#regcallback)&nbsp;)(struct&nbsp;[ERROR:Invalid&nbsp;link:zh-cn_topic_0000001357381989.xml#xref16984183083931,link:zh-cn_topic_0000001357381989.xml](zh-cn_topic_0000001357381989.xml)&nbsp;\*render,&nbsp;[RenderCallback](_audio.md#rendercallback)&nbsp;callback,&nbsp;void&nbsp;\*cookie) | 注册音频回调函数，用于放音过程中缓冲区数据写、DrainBuffer完成通知&nbsp;[更多...](#regcallback) |
| (&nbsp;[DrainBuffer](#drainbuffer)&nbsp;)(struct&nbsp;[ERROR:Invalid&nbsp;link:zh-cn_topic_0000001357381989.xml#xref1454572723083931,link:zh-cn_topic_0000001357381989.xml](zh-cn_topic_0000001357381989.xml)&nbsp;\*render,&nbsp;enum&nbsp;[AudioDrainNotifyType](_audio.md#audiodrainnotifytype)&nbsp;\*type) | 排空缓冲区中的数据&nbsp;[更多...](#drainbuffer) |
| (&nbsp;[GetLatency](#getlatency)&nbsp;)(struct&nbsp;AudioRender&nbsp;\*render,&nbsp;uint32_t&nbsp;\*ms) | 获取音频硬件驱动估计的延迟时间&nbsp;[更多...](#getlatency) |
| (&nbsp;[RenderFrame](#renderframe)&nbsp;)(struct&nbsp;AudioRender&nbsp;\*render,&nbsp;const&nbsp;void&nbsp;\*frame,&nbsp;uint64_t&nbsp;requestBytes,&nbsp;uint64_t&nbsp;\*replyBytes) | 往音频驱动中播放（render）一帧输出数据（放音，音频下行数据）&nbsp;[更多...](#renderframe) |
| (&nbsp;[GetRenderPosition](#getrenderposition)&nbsp;)(struct&nbsp;AudioRender&nbsp;\*render,&nbsp;uint64_t&nbsp;\*frames,&nbsp;struct&nbsp;[AudioTimeStamp](_audio_time_stamp.md)&nbsp;\*time) | 获取音频输出帧数的上一次计数&nbsp;[更多...](#getrenderposition) |
| (&nbsp;[SetRenderSpeed](#setrenderspeed)&nbsp;)(struct&nbsp;AudioRender&nbsp;\*render,&nbsp;float&nbsp;speed) | 设置一个音频的播放速度&nbsp;[更多...](#setrenderspeed) |
| (&nbsp;[GetRenderSpeed](#getrenderspeed)&nbsp;)(struct&nbsp;AudioRender&nbsp;\*render,&nbsp;float&nbsp;\*speed) | 获取一个音频当前的播放速度&nbsp;[更多...](#getrenderspeed) |
| (&nbsp;[SetChannelMode](#setchannelmode)&nbsp;)(struct&nbsp;AudioRender&nbsp;\*render,&nbsp;enum&nbsp;[AudioChannelMode](_audio.md#audiochannelmode)&nbsp;mode) | 设置音频播放的通道模式&nbsp;[更多...](#setchannelmode) |
| (&nbsp;[GetChannelMode](#getchannelmode)&nbsp;)(struct&nbsp;AudioRender&nbsp;\*render,&nbsp;enum&nbsp;[AudioChannelMode](_audio.md#audiochannelmode)&nbsp;\*mode) | 获取音频播放当前的通道模式&nbsp;[更多...](#getchannelmode) |
| (&nbsp;[RegCallback](#regcallback)&nbsp;)(struct&nbsp;AudioRender&nbsp;\*render,&nbsp;[RenderCallback](_audio.md#rendercallback)&nbsp;callback,&nbsp;void&nbsp;\*cookie) | 注册音频回调函数，用于放音过程中缓冲区数据写、DrainBuffer完成通知&nbsp;[更多...](#regcallback) |
| (&nbsp;[DrainBuffer](#drainbuffer)&nbsp;)(struct&nbsp;AudioRender&nbsp;\*render,&nbsp;enum&nbsp;[AudioDrainNotifyType](_audio.md#audiodrainnotifytype)&nbsp;\*type) | 排空缓冲区中的数据&nbsp;[更多...](#drainbuffer) |
## **详细描述**
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