#include <stdbool.h>#include <stdint.h>
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Macros | |
| #define | PV_API __attribute__((visibility ("default"))) |
| #define | PV_RECORDER_DEFAULT_DEVICE_INDEX (-1) |
Typedefs | |
| typedef struct pv_recorder | pv_recorder_t |
Functions | |
| PV_API void | pv_recorder_delete (pv_recorder_t *object) |
| PV_API void | pv_recorder_free_device_list (int32_t count, char **devices) |
| PV_API pv_recorder_status_t | pv_recorder_get_audio_devices (int32_t *count, char ***devices) |
| const PV_API char * | pv_recorder_get_selected_device (pv_recorder_t *object) |
| PV_API pv_recorder_status_t | pv_recorder_init (int32_t device_index, int32_t frame_length, int32_t buffer_size_msec, bool log_overflow, pv_recorder_t **object) |
| PV_API pv_recorder_status_t | pv_recorder_read (pv_recorder_t *object, int16_t *pcm) |
| PV_API pv_recorder_status_t | pv_recorder_start (pv_recorder_t *object) |
| const PV_API char * | pv_recorder_status_to_string (pv_recorder_status_t status) |
| PV_API pv_recorder_status_t | pv_recorder_stop (pv_recorder_t *object) |
| const PV_API char * | pv_recorder_version (void) |
Macro Definition Documentation
◆ PV_API
| #define PV_API __attribute__((visibility ("default"))) |
Definition at line 18 of file pvrecorder/include/pv_recorder.h.
◆ PV_RECORDER_DEFAULT_DEVICE_INDEX
| #define PV_RECORDER_DEFAULT_DEVICE_INDEX (-1) |
Definition at line 20 of file pvrecorder/include/pv_recorder.h.
Typedef Documentation
◆ pv_recorder_t
| typedef struct pv_recorder pv_recorder_t |
Forward declaration of PV_Recorder object. It contains everything related to recording audio, and audio frame information.
Definition at line 26 of file pvrecorder/include/pv_recorder.h.
Enumeration Type Documentation
◆ pv_recorder_status_t
| enum pv_recorder_status_t |
Status codes.
Definition at line 31 of file pvrecorder/include/pv_recorder.h.
Function Documentation
◆ pv_recorder_delete()
| PV_API void pv_recorder_delete | ( | pv_recorder_t * | object | ) |
Destructor.
- Parameters
-
object PV_Recorder object.
Definition at line 162 of file porcupine/demo/c/pvrecorder/src/pv_recorder.c.
◆ pv_recorder_free_device_list()
| PV_API void pv_recorder_free_device_list | ( | int32_t | count, |
| char ** | devices | ||
| ) |
Frees the device list initialized by pv_recorder_get_audio_devices. The function does not do any checks, providing correct count and pointer is up to the caller.
- Parameters
-
count The number of audio devices. devices The array containing the list of audio devices.
Definition at line 314 of file porcupine/demo/c/pvrecorder/src/pv_recorder.c.
◆ pv_recorder_get_audio_devices()
| PV_API pv_recorder_status_t pv_recorder_get_audio_devices | ( | int32_t * | count, |
| char *** | devices | ||
| ) |
Gets the input audio devices currently available. Each device name has a separate pointer, so the caller must free each item in the output array individually and free the output array itself. The utility function pv_recorder_free_device_list is provided to free the device list.
- Parameters
-
[out] count The number of audio devices. [out] devices The output array containing the list of audio devices.
- Returns
- Status Code. Returns PV_RECORDER_STATUS_OUT_OF_MEMORY, PV_RECORDER_STATUS_BACKEND_ERROR or PV_RECORDER_STATUS_INVALID_ARGUMENT on failure.
Definition at line 256 of file porcupine/demo/c/pvrecorder/src/pv_recorder.c.
◆ pv_recorder_get_selected_device()
| const PV_API char* pv_recorder_get_selected_device | ( | pv_recorder_t * | object | ) |
Getter to get the current selected audio device name.
- Parameters
-
object PV_Recorder object.
- Returns
- A string containing the name of the device.
Definition at line 249 of file porcupine/demo/c/pvrecorder/src/pv_recorder.c.
◆ pv_recorder_init()
| PV_API pv_recorder_status_t pv_recorder_init | ( | int32_t | device_index, |
| int32_t | frame_length, | ||
| int32_t | buffer_size_msec, | ||
| bool | log_overflow, | ||
| pv_recorder_t ** | object | ||
| ) |
Constructor for Picovoice Audio Recorder.
- Parameters
-
device_index The index of the audio device to use. A value of (-1) will resort to default device. frame_length The length of audio frame to get for each read call. buffer_size_msec Time in milliseconds to store audio frames to a temporary buffer. log_overflow Boolean variable to enable overflow logs. This will enable warning logs when buffer overflow occurs. [out] object Audio Recorder object to initialize.
- Returns
- Status Code. PV_RECORDER_STATUS_INVALID_ARGUMENT, PV_RECORDER_STATUS_BACKEND_ERROR, PV_RECORDER_STATUS_DEVICE_INITIALIZED or PV_RECORDER_STATUS_OUT_OF_MEMORY on failure.
Definition at line 51 of file porcupine/demo/c/pvrecorder/src/pv_recorder.c.
◆ pv_recorder_read()
| PV_API pv_recorder_status_t pv_recorder_read | ( | pv_recorder_t * | object, |
| int16_t * | pcm | ||
| ) |
Synchronous call to read frames. Copies param ${length} amount of frames to param ${pcm} array provided to input.
- Parameters
-
object PV_Recorder object. pcm[out] An array for the frames to be copied to.
- Returns
- Status Code. Returns PV_RECORDER_STATUS_INVALID_ARGUMENT, PV_RECORDER_INVALID_STATE or PV_RECORDER_IO_ERROR on failure. Returns PV_RECORDER_STATUS_BUFFER_OVERFLOW if audio frames aren't being read fast enough. This means old audio frames are being replaced by new audio frames.
Definition at line 213 of file porcupine/demo/c/pvrecorder/src/pv_recorder.c.
◆ pv_recorder_start()
| PV_API pv_recorder_status_t pv_recorder_start | ( | pv_recorder_t * | object | ) |
Starts recording audio and processing audio frames.
- Parameters
-
object PV_Recorder object. @returnStatus Status Code. Returns PV_RECORDER_STATUS_INVALID_ARGUMENT, PV_RECORDER_STATUS_DEVICE_NOT_INITIALIZED or PV_RECORDER_STATUS_INVALID_STATE on failure.
Definition at line 172 of file porcupine/demo/c/pvrecorder/src/pv_recorder.c.
◆ pv_recorder_status_to_string()
| const PV_API char* pv_recorder_status_to_string | ( | pv_recorder_status_t | status | ) |
Provides string representations of status codes.
- Parameters
-
status Status code.
- Returns
- String representation.
Definition at line 323 of file porcupine/demo/c/pvrecorder/src/pv_recorder.c.
◆ pv_recorder_stop()
| PV_API pv_recorder_status_t pv_recorder_stop | ( | pv_recorder_t * | object | ) |
Stops recording audio.
- Parameters
-
object PV_Recorder object.
- Returns
- Status Code. Returns PV_RECORDER_STATUS_INVALID_ARGUMENT, PV_RECORDER_STATUS_DEVICE_NOT_INITIALIZED or PV_RECORDER_STATUS_INVALID_STATE on failure.
Definition at line 192 of file porcupine/demo/c/pvrecorder/src/pv_recorder.c.
◆ pv_recorder_version()
| const PV_API char* pv_recorder_version | ( | void | ) |
Getter for version.
- Returns
- Version.
Definition at line 343 of file porcupine/demo/c/pvrecorder/src/pv_recorder.c.