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录像使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e4651" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e4651-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/mpp/mini_audio_player_user_guide.html" id="id-d5856e4651-link">MPP 音频播放器使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e4724" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e4724-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/lvgl/lvgl_introduction.html" id="id-d5856e4724-link">LVGL 使用指南</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_nww_hzh_pzb-d5856e4868" class="topicref" data-id="concept_nww_hzh_pzb" data-state="not-ready"><span role="button" tabindex="0" 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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic concept/concept topic concept" role="article" aria-labelledby="ariaid-title1"><span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/i2s/i2s_interface_lite.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">接口设计</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
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Read time: 2 minute(s)
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</div><div class="- topic/body concept/conbody body conbody"><section class="- topic/section section" id="i2s-interface-design__section_ngf_lzl_4dc" data-ofbid="i2s-interface-design__section_ngf_lzl_4dc"><h2 class="- topic/title title sectiontitle">Driver 层接口设计</h2>
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<div class="- topic/div div section" id="i2s-interface-design__id13">
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<p class="- topic/p p" data-ofbid="d146041e33__20250121171610">Driver 层可以同时实现 playback 和 record 两个功能，主要根据的是音频数据流的方向进行判别。</p>
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<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_gvg_kkf_fdc" data-ofbid="i2s-interface-design__table_gvg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 1</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">drv_i2s_sound_init</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_gvg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_gvg_kkf_fdc__entry__2">rt_err_t drv_i2s_sound_init(struct rt_audio_device
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*audio)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_gvg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_gvg_kkf_fdc__entry__2">i2s 的初始化函数</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_gvg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_gvg_kkf_fdc__entry__2">audio：指向音频设备的指针</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_gvg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_gvg_kkf_fdc__entry__2">RT_EOK：执行成功</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_gvg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_gvg_kkf_fdc__entry__2">- </td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_hvg_kkf_fdc" data-ofbid="i2s-interface-design__table_hvg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 2</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">drv_i2s_sound_buffer_info</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_hvg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_hvg_kkf_fdc__entry__2">void drv_i2s_sound_buffer_info(struct rt_audio_device *audio,
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struct rt_audio_buf_info *info)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_hvg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_hvg_kkf_fdc__entry__2">获取音频的 TX buffer 参数</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_hvg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_hvg_kkf_fdc__entry__2">
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<div class="- topic/div div">
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<div class="- topic/div div"> audio：指向音频设备的指针</div>
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<div class="- topic/div div">info：用于获取 TX buffer 参数的指针</div>
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</div>
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||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_hvg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_hvg_kkf_fdc__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_hvg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_hvg_kkf_fdc__entry__2">- </td></tr></tbody></table></div>
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||
<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_ivg_kkf_fdc" data-ofbid="i2s-interface-design__table_ivg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 3</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">drv_i2s_sound_start</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_ivg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_ivg_kkf_fdc__entry__2">rt_err_t drv_i2s_sound_start(struct rt_audio_device *audio,
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int stream)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_ivg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_ivg_kkf_fdc__entry__2">开始音频播放</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_ivg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_ivg_kkf_fdc__entry__2">
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<div class="- topic/div div">
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<div class="- topic/div div"> audio：指向音频设备的指针</div>
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||
<div class="- topic/div div"> stream：音频数据流方向</div>
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</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_ivg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_ivg_kkf_fdc__entry__2">
|
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<div class="- topic/div div">
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<div class="- topic/div div"> RT_EOK：执行成功</div>
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<div class="- topic/div div"> -RT_EINVAL：参数非法</div>
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</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_ivg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_ivg_kkf_fdc__entry__2">- </td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_jvg_kkf_fdc" data-ofbid="i2s-interface-design__table_jvg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 4</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">drv_i2s_sound_stop</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_jvg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_jvg_kkf_fdc__entry__2">rt_err_t drv_i2s_sound_stop(struct rt_audio_device *audio,
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int stream)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_jvg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_jvg_kkf_fdc__entry__2">结束音频播放</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_jvg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_jvg_kkf_fdc__entry__2">
|
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<div class="- topic/div div">
|
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<div class="- topic/div div"> audio：指向音频设备的指针</div>
|
||
<div class="- topic/div div"> stream：音频数据流方向</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_jvg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_jvg_kkf_fdc__entry__2">
|
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<div class="- topic/div div">
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<div class="- topic/div div"> RT_EOK：执行成功</div>
|
||
<div class="- topic/div div"> -RT_EINVAL：参数非法</div>
|
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</div>
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</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_jvg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_jvg_kkf_fdc__entry__2">- </td></tr></tbody></table></div>
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<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_kvg_kkf_fdc" data-ofbid="i2s-interface-design__table_kvg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 5</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">drv_i2s_sound_pause</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_kvg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_kvg_kkf_fdc__entry__2">rt_err_t drv_i2s_sound_pause(struct rt_audio_device *audio,
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int enable)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_kvg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_kvg_kkf_fdc__entry__2">暂停/恢复音频播放</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_kvg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_kvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> audio：指向音频设备的指针</div>
|
||
<div class="- topic/div div"> enable：音频暂停和恢复播放使能位(0 为恢复，非 0 为暂停)</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_kvg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_kvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> RT_EOK：执行成功</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_kvg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_kvg_kkf_fdc__entry__2">- </td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_lvg_kkf_fdc" data-ofbid="i2s-interface-design__table_lvg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 6</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">drv_i2s_sound_configure</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_lvg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_lvg_kkf_fdc__entry__2">rt_err_t drv_i2s_sound_configure(struct rt_audio_device
|
||
*audio, struct rt_audio_caps *caps)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_lvg_kkf_fdc__entry__1">功能原型</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_lvg_kkf_fdc__entry__2">音频设备配置接口，用于配置采样格式，采样率，通道数等接口</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_lvg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_lvg_kkf_fdc__entry__2">
|
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<div class="- topic/div div">
|
||
<div class="- topic/div div"> audio：指向音频设备的指针</div>
|
||
<div class="- topic/div div"> caps：指向配置参数的指针</div>
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</div>
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||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_lvg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_lvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
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||
<div class="- topic/div div"> RT_EOK：执行成功</div>
|
||
<div class="- topic/div div"> -RT_ERROR：参数不支持</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_lvg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_lvg_kkf_fdc__entry__2">- </td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_mvg_kkf_fdc" data-ofbid="i2s-interface-design__table_mvg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 7</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">drv_i2s_sound_getcaps</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_mvg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_mvg_kkf_fdc__entry__2">rt_err_t drv_i2s_sound_getcaps(struct rt_audio_device *audio,
|
||
struct rt_audio_caps *caps)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_mvg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_mvg_kkf_fdc__entry__2">获取音频设备的参数</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_mvg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_mvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> audio：指向音频设备的指针</div>
|
||
<div class="- topic/div div"> caps：指向配置参数的指针</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_mvg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_mvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> RT_EOK：执行成功</div>
|
||
<div class="- topic/div div"> -RT_ERROR：参数不支持</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_mvg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_mvg_kkf_fdc__entry__2">- </td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_nvg_kkf_fdc" data-ofbid="i2s-interface-design__table_nvg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 8</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">drv_audio_get_i2s_sound_avail</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_nvg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_nvg_kkf_fdc__entry__2">rt_size_t drv_i2s_sound_get_playback_avail(struct
|
||
rt_audio_device *audio)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_nvg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_nvg_kkf_fdc__entry__2">获取音频缓存的数据大小</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_nvg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_nvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> audio：指向音频设备的指针</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_nvg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_nvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> 缓存数据的大小</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_nvg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_nvg_kkf_fdc__entry__2">-</td></tr></tbody></table></div>
|
||
</div>
|
||
</section><section class="- topic/section section" id="i2s-interface-design__section_kzk_lzl_4dc" data-ofbid="i2s-interface-design__section_kzk_lzl_4dc"><h2 class="- topic/title title sectiontitle">HAL 层接口设计</h2>
|
||
|
||
<div class="- topic/div div section" id="i2s-interface-design__id14">
|
||
<p class="- topic/p p" data-ofbid="d146041e425__20250121171610">HAL 层接口也是分 playback，record 两部分进行设计，下面以 playback 端的接口进行说明。 </p>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_ovg_kkf_fdc" data-ofbid="i2s-interface-design__table_ovg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 9</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_i2s_protocol_select</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_ovg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_ovg_kkf_fdc__entry__2">int hal_i2s_protocol_select(aic_i2s_ctrl *i2s, i2s_protocol_t
|
||
protocol)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_ovg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_ovg_kkf_fdc__entry__2">设置传输协议</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_ovg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_ovg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> i2s：指向 aic_i2s_ctrl 的指针</div>
|
||
<div class="- topic/div div"> protocol：传输协议</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_ovg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_ovg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">0：执行成功</div>
|
||
<div class="- topic/div div"> -EINVAL：参数不支持</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_ovg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_ovg_kkf_fdc__entry__2">- </td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_pvg_kkf_fdc" data-ofbid="i2s-interface-design__table_pvg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 10</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_i2s_sample_width_select</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_pvg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_pvg_kkf_fdc__entry__2">int hal_i2s_sample_width_select(aic_i2s_ctrl *i2s,
|
||
i2s_sample_width_t width)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_pvg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_pvg_kkf_fdc__entry__2">设置采样通道的位宽</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_pvg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_pvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> i2s：指向 aic_i2s_ctrl 的指针</div>
|
||
<div class="- topic/div div"> width：通道的位宽</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_pvg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_pvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">0：执行成功</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_pvg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_pvg_kkf_fdc__entry__2">- </td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_qvg_kkf_fdc" data-ofbid="i2s-interface-design__table_qvg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 11</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_i2s_mclk_set</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_qvg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_qvg_kkf_fdc__entry__2">int hal_i2s_mclk_set(aic_i2s_ctrl *i2s, i2s_sample_rate_t
|
||
sample_rate, uint32_t mclk_nfs)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_qvg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_qvg_kkf_fdc__entry__2">设置 MCLK 的时钟频率</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_qvg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_qvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> i2s：指向 aic_i2s_ctrl 的指针</div>
|
||
<div class="- topic/div div">sample_rate：采样率</div>
|
||
<div class="- topic/div div"> mclk_nfs：MCLK 的时钟频率</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_qvg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_qvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">0：执行成功</div>
|
||
<div class="- topic/div div"> -EINVAL：参数不支持</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_qvg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_qvg_kkf_fdc__entry__2">- </td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_rvg_kkf_fdc" data-ofbid="i2s-interface-design__table_rvg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 12</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_i2s_polarity_set</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_rvg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_rvg_kkf_fdc__entry__2">void hal_i2s_polarity_set(aic_i2s_ctrl *i2s, i2s_polarity_t
|
||
polarity)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_rvg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_rvg_kkf_fdc__entry__2">选择 LRCK 的左右通道极性</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_rvg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_rvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> i2s：指向 aic_i2s_ctrl 的指针</div>
|
||
<div class="- topic/div div"> polarity：LRCK 的左右通道极性</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_rvg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_rvg_kkf_fdc__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_rvg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_rvg_kkf_fdc__entry__2">- </td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_svg_kkf_fdc" data-ofbid="i2s-interface-design__table_svg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 13</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_i2s_sclk_set</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_svg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_svg_kkf_fdc__entry__2">int hal_i2s_sclk_set(aic_i2s_ctrl *i2s, i2s_sample_rate_t
|
||
sample_rate, uint32_t sclk_nfs)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_svg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_svg_kkf_fdc__entry__2">设置 SCLK/LRCK 的比率</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_svg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_svg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> i2s：指向 aic_i2s_ctrl 的指针</div>
|
||
<div class="- topic/div div">sample_rate：采样率</div>
|
||
<div class="- topic/div div"> sclk_nfs：需要设置的比率</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_svg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_svg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">0：执行成功</div>
|
||
<div class="- topic/div div"> -EINVAL：参数不支持</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_svg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_svg_kkf_fdc__entry__2">- </td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_tvg_kkf_fdc" data-ofbid="i2s-interface-design__table_tvg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 14</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_i2s_channel_select</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_tvg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_tvg_kkf_fdc__entry__2">void hal_i2s_channel_select(aic_i2s_ctrl *i2s,
|
||
i2s_sound_channel_t channel, i2s_stream_t stream)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_tvg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_tvg_kkf_fdc__entry__2">I2S 通道数量设置</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_tvg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_tvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> i2s：指向 aic_i2s_ctrl 的指针</div>
|
||
<div class="- topic/div div"> channel：指向 i2s_sound_channel_t 的变量，表示要使用的通道</div>
|
||
<div class="- topic/div div"> stream：音频数据流的方向</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_tvg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_tvg_kkf_fdc__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_tvg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_tvg_kkf_fdc__entry__2">- </td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_uvg_kkf_fdc" data-ofbid="i2s-interface-design__table_uvg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 15</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_i2s_playback_start</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_uvg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_uvg_kkf_fdc__entry__2">void hal_i2s_playback_start(aic_i2s_ctrl *i2s, i2s_format_t
|
||
*format)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_uvg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_uvg_kkf_fdc__entry__2">开始播放</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_uvg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_uvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> i2s：指向 aic_i2s_ctrl 的指针</div>
|
||
<div class="- topic/div div"> format：指向 i2s_format_t 的指针</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_uvg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_uvg_kkf_fdc__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_uvg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_uvg_kkf_fdc__entry__2">- </td></tr></tbody></table></div>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="i2s-interface-design__table_vvg_kkf_fdc" data-ofbid="i2s-interface-design__table_vvg_kkf_fdc" data-cols="2"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 16</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">hal_i2s_playback_stop</span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="i2s-interface-design__table_vvg_kkf_fdc__entry__1">函数原型</th><th class="- topic/entry entry colsep-0 rowsep-1" id="i2s-interface-design__table_vvg_kkf_fdc__entry__2">void hal_i2s_playback_stop(aic_i2s_ctrl *i2s)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_vvg_kkf_fdc__entry__1">功能说明</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_vvg_kkf_fdc__entry__2">停止播放</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_vvg_kkf_fdc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_vvg_kkf_fdc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> i2s：指向 aic_i2s_ctrl 的指针</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="i2s-interface-design__table_vvg_kkf_fdc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="i2s-interface-design__table_vvg_kkf_fdc__entry__2">无</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="i2s-interface-design__table_vvg_kkf_fdc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="i2s-interface-design__table_vvg_kkf_fdc__entry__2">-</td></tr></tbody></table></div>
|
||
</div>
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<div class=" wh_topic_toc "><div class="wh_topic_label">在本页上</div><ul><li class="section-item"><div class="section-title"><a href="#i2s-interface-design__section_ngf_lzl_4dc" data-tocid="i2s-interface-design__section_ngf_lzl_4dc">Driver 层接口设计</a></div></li><li class="section-item"><div class="section-title"><a href="#i2s-interface-design__section_kzk_lzl_4dc" data-tocid="i2s-interface-design__section_kzk_lzl_4dc">HAL 层接口设计</a></div></li></ul></div>
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