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gvr::AudioApi

#include <gvr_audio.h>

This is a convenience C++ wrapper for the Audio C API.

Summary

This wrapper strategy prevents ABI compatibility issues between compilers by ensuring that the interface between client code and the implementation code in libgvr.so is a pure C interface. The translation from C++ calls to C calls provided by this wrapper runs entirely in the client's binary and is compiled by the client's compiler.

Methods in this class are only documented insofar as the C++ wrapping logic is concerned; for information about the method itself, please refer to the corresponding function in the C API.

THREADING: this class is thread-safe and reentrant after initialized with Init().

Inheritance

Inherits from: gvr::WrapperBase< gvr_audio_context, gvr_audio_destroy >

Public functions
`CreateSoundObject(const std::string & filename)`	`AudioSourceId` Returns a new sound object.
`CreateSoundfield(const std::string & filename)`	`AudioSourceId` Returns a new sound field.
`CreateStereoSound(const std::string & filename)`	`AudioSourceId` Returns a new stereo sound.
`EnableRoom(bool enable)`	`void` Turns on/off the room reverberation effect.
`EnableStereoSpeakerMode(bool enable)`	`void` Enables the stereo speaker mode.
`Init(JNIEnv *env, jobject android_context, jobject class_loader, AudioRenderingMode rendering_mode)`	`bool` Creates and initializes a gvr_audio_context.
`IsSoundPlaying(AudioSourceId source_id) const`	`bool` Checks if a sound is playing.
`IsSourceIdValid(AudioSourceId source_id)`	`bool` Checks if a source is in a valid playable state.
`Pause()`	`void` Pauses the audio engine.
`PauseSound(AudioSourceId source_id)`	`void` Pauses the playback of a sound.
`PlaySound(AudioSourceId source_id, bool looping_enabled)`	`void` Starts the playback of a sound.
`PreloadSoundfile(const std::string & filename)`	`bool` Preloads a local sound file.
`Resume()`	`void` Resumes the audio engine.
`ResumeSound(AudioSourceId source_id)`	`void` Resumes the playback of a sound.
`SetHeadPose(const Mat4f & head_pose_matrix)`	`void` Sets the head position from a matrix representation.
`SetMasterVolume(float volume)`	`void` Changes the master volume.
`SetRoomProperties(float size_x, float size_y, float size_z, gvr_audio_material_type wall_material, gvr_audio_material_type ceiling_material, gvr_audio_material_type floor_material)`	`void` Sets the room properties describing the dimensions and surface materials of a given room.
`SetRoomReverbAdjustments(float gain, float time_adjust, float brightness_adjust)`	`void` Adjusts the properties of the current reverb, allowing changes to the reverb's gain, duration and low/high frequency balance.
`SetSoundObjectDirectivity(AudioSourceId sound_object_id, float alpha, float order)`	`void` Sets directivity constants for an existing sound object.
`SetSoundObjectDistanceRolloffModel(AudioSourceId sound_object_id, gvr_audio_distance_rolloff_type rolloff_model, float min_distance, float max_distance)`	`void`
`SetSoundObjectPosition(AudioSourceId sound_object_id, float x, float y, float z)`	`void` Repositions an existing sound object.
`SetSoundObjectRotation(AudioSourceId sound_object_id, const Quatf & sound_object_quat)`	`void` Sets the rotation for an existing sound object.
`SetSoundVolume(AudioSourceId source_id, float volume)`	`void` Changes the volume of an existing sound.
`SetSoundfieldRotation(AudioSourceId soundfield_id, const Quatf & soundfield_rotation)`	`void` Rotates an existing soundfield.
`StopSound(AudioSourceId source_id)`	`void` Stops the playback of a sound.
`UnloadSoundfile(const std::string & filename)`	`void` Unloads a previously preloaded sample from memory.
`Update()`	`void` For more information, see gvr_audio_update().

Public functions

CreateSoundObject

AudioSourceId CreateSoundObject(
  const std::string & filename
)

Returns a new sound object.

For more information, see gvr_audio_create_sound_object().

CreateSoundfield

AudioSourceId CreateSoundfield(
  const std::string & filename
)

Returns a new sound field.

For more information, see gvr_audio_create_soundfield().

CreateStereoSound

AudioSourceId CreateStereoSound(
  const std::string & filename
)

Returns a new stereo sound.

For more information, see gvr_audio_create_stereo_sound().

EnableRoom

void EnableRoom(
  bool enable
)

Turns on/off the room reverberation effect.

For more information, see gvr_audio_enable_room().

EnableStereoSpeakerMode

void EnableStereoSpeakerMode(
  bool enable
)

Enables the stereo speaker mode.

For more information see gvr_audio_enable_stereo_speaker_mode().

Init

bool Init(
  JNIEnv *env,
  jobject android_context,
  jobject class_loader,
  AudioRenderingMode rendering_mode
)

Creates and initializes a gvr_audio_context.

For more information, see gvr_audio_create().

IsSoundPlaying

bool IsSoundPlaying(
  AudioSourceId source_id
) const

Checks if a sound is playing.

For more information, see gvr_audio_is_sound_playing().

IsSourceIdValid

bool IsSourceIdValid(
  AudioSourceId source_id
)

Checks if a source is in a valid playable state.

For more information, see gvr_audio_is_source_id_valid().

Pause

void Pause()

Pauses the audio engine.

For more information, see gvr_audio_pause().

PauseSound

void PauseSound(
  AudioSourceId source_id
)

Pauses the playback of a sound.

For more information, see gvr_audio_pause_sound().

PlaySound

void PlaySound(
  AudioSourceId source_id,
  bool looping_enabled
)

Starts the playback of a sound.

For more information, see gvr_audio_play_sound().

PreloadSoundfile

bool PreloadSoundfile(
  const std::string & filename
)

Preloads a local sound file.

For more information, see gvr_audio_preload_soundfile().

Resume

void Resume()

Resumes the audio engine.

For more information, see gvr_audio_resume().

ResumeSound

void ResumeSound(
  AudioSourceId source_id
)

Resumes the playback of a sound.

For more information, see gvr_audio_resume_sound().

SetHeadPose

void SetHeadPose(
  const Mat4f & head_pose_matrix
)

Sets the head position from a matrix representation.

For more information, see gvr_audio_set_head_pose().

SetMasterVolume

void SetMasterVolume(
  float volume
)

Changes the master volume.

For more information, see gvr_audio_set_master_volume().

SetRoomProperties

void SetRoomProperties(
  float size_x,
  float size_y,
  float size_z,
  gvr_audio_material_type wall_material,
  gvr_audio_material_type ceiling_material,
  gvr_audio_material_type floor_material
)

Sets the room properties describing the dimensions and surface materials of a given room.

For more information, see gvr_audio_set_room_properties().

SetRoomReverbAdjustments

void SetRoomReverbAdjustments(
  float gain,
  float time_adjust,
  float brightness_adjust
)

Adjusts the properties of the current reverb, allowing changes to the reverb's gain, duration and low/high frequency balance.

For more information see gvr_audio_set_room_reverb_adjustments().

SetSoundObjectDirectivity

void SetSoundObjectDirectivity(
  AudioSourceId sound_object_id,
  float alpha,
  float order
)

Sets directivity constants for an existing sound object.

For more information, see gvr_audio_set_sound_object_directivity.

SetSoundObjectDistanceRolloffModel

void SetSoundObjectDistanceRolloffModel(
  AudioSourceId sound_object_id,
  gvr_audio_distance_rolloff_type rolloff_model,
  float min_distance,
  float max_distance
)

SetSoundObjectPosition

void SetSoundObjectPosition(
  AudioSourceId sound_object_id,
  float x,
  float y,
  float z
)

Repositions an existing sound object.

For more information, see gvr_audio_set_sound_object_position().

SetSoundObjectRotation

void SetSoundObjectRotation(
  AudioSourceId sound_object_id,
  const Quatf & sound_object_quat
)

Sets the rotation for an existing sound object.

For more information, see gvr_audio_set_sound_object_rotation.

SetSoundVolume

void SetSoundVolume(
  AudioSourceId source_id,
  float volume
)

Changes the volume of an existing sound.

For more information, see gvr_audio_set_sound_volume().

SetSoundfieldRotation

void SetSoundfieldRotation(
  AudioSourceId soundfield_id,
  const Quatf & soundfield_rotation
)

Rotates an existing soundfield.

For more information, see gvr_audio_set_soundfield_rotation().

StopSound

void StopSound(
  AudioSourceId source_id
)

Stops the playback of a sound.

For more information, see gvr_audio_stop_sound().

UnloadSoundfile

void UnloadSoundfile(
  const std::string & filename
)

Unloads a previously preloaded sample from memory.

For more information, see gvr_audio_preload_soundfile().

Update

void Update()

For more information, see gvr_audio_update().