> ## Documentation Index
> Fetch the complete documentation index at: https://dragonwingdocs-staging.qualcomm.com/llms.txt
> Use this file to discover all available pages before exploring further.

# PCM Encoder API

**Header:** `spf/api/modules/pcm_encoder_api.h`

## Structures

### `param_id_pcm_encoder_frame_size_t`

**Members**

<ParamField path="frame_size_type" type="uint32_t">
  }
</ParamField>

<ParamField path="frame_size_in_samples" type="uint32_t">
  We recommend the frame size in samples to be limited to 100ms(or 384khz\*100ms=38400 samples)}
</ParamField>

<ParamField path="frame_size_in_us" type="uint32_t">
  }
</ParamField>

## Type Definitions

### `param_id_pcm_encoder_frame_size_t`

```cpp theme={null}
typedef struct param_id_pcm_encoder_frame_size_t param_id_pcm_encoder_frame_size_t
```

## Macros

### `PCM_ENC_DATA_INPUT_PORT`

```c theme={null}
#define PCM_ENC_DATA_INPUT_PORT 0x2
```

### `PCM_ENC_DATA_OUTPUT_PORT`

```c theme={null}
#define PCM_ENC_DATA_OUTPUT_PORT 0x1
```

### `PARAM_ID_PCM_ENCODER_FRAME_SIZE`

ID of the parameter used to set frame size of the pcm encoder In general,the PCM encoder frame size is determined by the perf\_mode of the container.For Low latency it is 1 ms and for low Power it is 5 ms.

```c theme={null}
#define PARAM_ID_PCM_ENCODER_FRAME_SIZE 0x0800136B
```

### `MODULE_ID_PCM_ENC`

Module ID for PCM encoder.

```c theme={null}
#define MODULE_ID_PCM_ENC 0x07001004
```