提交 b54b0be3 编写于 作者: W wusongqing

update docs against 5569

Signed-off-by: Nwusongqing <wusongqing@huawei.com>
上级 6819dad0
......@@ -2,10 +2,7 @@
## When to Use
You can use OpenSL ES to develop the audio recording function in OpenHarmony. Currently, only some
[OpenSL ES APIs](https://gitee.com/openharmony/third_party_opensles/blob/master/api/1.0.1/OpenSLES.h) are implemented. If an API that has not been implemented yet is called, **SL_RESULT_FEATURE_UNSUPPORTED** will be returned.
You can use OpenSL ES to develop the audio recording function in OpenHarmony. Currently, only some [OpenSL ES APIs](https://gitee.com/openharmony/third_party_opensles/blob/master/api/1.0.1/OpenSLES.h) are implemented. If an API that has not been implemented is called, **SL_RESULT_FEATURE_UNSUPPORTED** will be returned.
## How to Develop
......@@ -27,8 +24,6 @@ To use OpenSL ES to develop the audio recording function in OpenHarmony, perform
(*engineObject)->Realize(engineObject, SL_BOOLEAN_FALSE);
```
3. Obtain the **engineEngine** instance of the **SL_IID_ENGINE** interface.
```c++
......@@ -36,8 +31,6 @@ To use OpenSL ES to develop the audio recording function in OpenHarmony, perform
result = (*engineObject)->GetInterface(engineObject, SL_IID_ENGINE, &engineItf);
```
4. Configure the recorder information (including the input source **audiosource** and output source **audiosink**), and create a **pcmCapturerObject** instance.
```c++
......@@ -82,20 +75,18 @@ To use OpenSL ES to develop the audio recording function in OpenHarmony, perform
5. Obtain the **recordItf** instance of the **SL_IID_RECORD** interface.
```
```c++
SLRecordItf recordItf;
(*pcmCapturerObject)->GetInterface(pcmCapturerObject, SL_IID_RECORD, &recordItf);
```
6. Obtain the **bufferQueueItf** instance of the **SL_IID_OH_BUFFERQUEUE** interface.
```
```c++
SLOHBufferQueueItf bufferQueueItf;
(*pcmCapturerObject)->GetInterface(pcmCapturerObject, SL_IID_OH_BUFFERQUEUE, &bufferQueueItf);
```
7. Register the **BufferQueueCallback** function.
```c++
......@@ -120,7 +111,6 @@ To use OpenSL ES to develop the audio recording function in OpenHarmony, perform
(*bufferQueueItf)->RegisterCallback(bufferQueueItf, BufferQueueCallback, wavFile_);
```
8. Start audio recording.
```c++
......@@ -145,7 +135,6 @@ To use OpenSL ES to develop the audio recording function in OpenHarmony, perform
}
```
9. Stop audio recording.
```c++
......
# OpenSL ES Audio Playback Development
## When to Use
You can use OpenSL ES to develop the audio playback function in OpenHarmony. Currently, only some [OpenSL ES APIs](https://gitee.com/openharmony/third_party_opensles/blob/master/api/1.0.1/OpenSLES.h) are implemented. If an API that has not been implemented is called, **SL_RESULT_FEATURE_UNSUPPORTED** will be returned.
## How to Develop
To use OpenSL ES to develop the audio playback function in OpenHarmony, perform the following steps:
......@@ -20,8 +16,6 @@ To use OpenSL ES to develop the audio playback function in OpenHarmony, perform
#include <OpenSLES_Platform.h>
```
2. Use the **slCreateEngine** API to obtain an **engine** instance.
```c++
......@@ -30,8 +24,6 @@ To use OpenSL ES to develop the audio playback function in OpenHarmony, perform
(*engineObject)->Realize(engineObject, SL_BOOLEAN_FALSE);
```
3. Obtain the **engineEngine** instance of the **SL_IID_ENGINE** interface.
```c++
......@@ -39,8 +31,6 @@ To use OpenSL ES to develop the audio playback function in OpenHarmony, perform
(*engineObject)->GetInterface(engineObject, SL_IID_ENGINE, &engineEngine);
```
4. Configure the player and create an **AudioPlayer** instance.
```c++
......@@ -66,8 +56,6 @@ To use OpenSL ES to develop the audio playback function in OpenHarmony, perform
(*pcmPlayerObject)->Realize(pcmPlayerObject, SL_BOOLEAN_FALSE);
```
5. Obtain the **bufferQueueItf** instance of the **SL_IID_OH_BUFFERQUEUE** interface.
```
......@@ -75,8 +63,6 @@ To use OpenSL ES to develop the audio playback function in OpenHarmony, perform
(*pcmPlayerObject)->GetInterface(pcmPlayerObject, SL_IID_OH_BUFFERQUEUE, &bufferQueueItf);
```
6. Open an audio file and register the **BufferQueueCallback** function.
```c++
......@@ -101,8 +87,6 @@ To use OpenSL ES to develop the audio playback function in OpenHarmony, perform
(*bufferQueueItf)->RegisterCallback(bufferQueueItf, BufferQueueCallback, wavFile_);
```
7. Obtain the **playItf** instance of the **SL_PLAYSTATE_PLAYING** interface and start playback.
```c++
......@@ -111,8 +95,6 @@ To use OpenSL ES to develop the audio playback function in OpenHarmony, perform
(*playItf)->SetPlayState(playItf, SL_PLAYSTATE_PLAYING);
```
8. Stop audio playback.
```c++
......
......@@ -8,8 +8,6 @@ During video recording, audio and video signals are captured, encoded, and saved
![en-us_image_video_recorder_state_machine](figures/en-us_image_video_recorder_state_machine.png)
**Figure 2** Layer 0 diagram of video recording
![en-us_image_video_recorder_zero](figures/en-us_image_video_recorder_zero.png)
......
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