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feat(audio): replace OpenAL audio backend for Miniaudio backend (#1005)
Co-Authored-By: João Miguel Nogueira <[email protected]>
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| /// @file | ||
| /// @brief Class @ref cubos::core::al::AudioContext and related types. | ||
| /// @ingroup core-al | ||
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| #pragma once | ||
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| #include <memory> | ||
| #include <string> | ||
| #include <vector> | ||
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| #include <glm/glm.hpp> | ||
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| #include <cubos/core/api.hpp> | ||
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| namespace cubos::core::al | ||
| { | ||
| namespace impl | ||
| { | ||
| class Buffer; | ||
| class Source; | ||
| class Listener; | ||
| class AudioDevice; | ||
| } // namespace impl | ||
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| /// @brief Handle to an audio buffer. | ||
| /// @see impl::Buffer - audio buffer interface. | ||
| /// @see AudioContext::createBuffer() | ||
| /// @ingroup core-al | ||
| using Buffer = std::shared_ptr<impl::Buffer>; | ||
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| /// @brief Handle to an audio source. | ||
| /// @see impl::Source - audio source interface. | ||
| /// @see AudioDevice::createSource() | ||
| /// @ingroup core-al | ||
| using Source = std::shared_ptr<impl::Source>; | ||
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| /// @brief Handle to an audio listener. | ||
| /// @see impl::Listener - audio listener interface. | ||
| /// @see AudioDevice::createListener() | ||
| /// @ingroup core-al | ||
| using Listener = std::shared_ptr<impl::Listener>; | ||
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| /// @brief Handle to an audio device. | ||
| /// @see impl::AudioDevice - audio device interface. | ||
| /// @see AudioContext::createDevice() | ||
| /// @ingroup core-al | ||
| using AudioDevice = std::shared_ptr<impl::AudioDevice>; | ||
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| /// @brief Audio context that contains audio devices; | ||
| class CUBOS_CORE_API AudioContext | ||
| { | ||
| public: | ||
| AudioContext() = default; | ||
| virtual ~AudioContext() = default; | ||
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| /// @brief Creates an audio context. | ||
| /// @return AudioContext, or nullptr on failure. | ||
| static std::shared_ptr<AudioContext> create(); | ||
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| /// @brief Enumerates the available devices. | ||
| /// @param[out] devices Vector to fill with the available device's specifiers. | ||
| virtual void enumerateDevices(std::vector<std::string>& devices) = 0; | ||
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| /// @brief Creates a new audio device | ||
| /// @param listenerCount Number of audio listeners to be supported by the device. | ||
| /// @param specifier Identifier of the audio device. | ||
| /// @return Handle of the new device | ||
| virtual AudioDevice createDevice(unsigned int listenerCount, | ||
| const std::string& specifier = "") = 0; | ||
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| /// @brief Creates a new audio buffer. | ||
| /// @param data Data to be written to the buffer, either .wav, .mp3 or .flac. | ||
| /// @param dataSize Size of the data to be written. | ||
| /// @return Handle of the new buffer. | ||
| virtual Buffer createBuffer(const void* data, size_t dataSize) = 0; | ||
| }; | ||
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| /// @brief Namespace to store the abstract types implemented by the audio device implementations. | ||
| namespace impl | ||
| { | ||
| /// @brief Abstract audio buffer. | ||
| class CUBOS_CORE_API Buffer | ||
| { | ||
| public: | ||
| virtual ~Buffer() = default; | ||
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| /// @brief Gets the length in seconds of the audio buffer. | ||
| /// @return Length in seconds of the audio buffer. | ||
| virtual float length() = 0; | ||
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| protected: | ||
| Buffer() = default; | ||
| }; | ||
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| /// @brief Abstract audio source. | ||
| class CUBOS_CORE_API Source | ||
| { | ||
| public: | ||
| virtual ~Source() = default; | ||
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| /// @brief Sets the buffer to be played by the source. | ||
| /// @param buffer Buffer. | ||
| virtual void setBuffer(cubos::core::al::Buffer buffer) = 0; | ||
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| /// @brief Sets the position of the source, by default, in the world space. | ||
| /// @see setRelative() to change this behavior. | ||
| /// @param position Position. | ||
| virtual void setPosition(const glm::vec3& position) = 0; | ||
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| /// @brief Sets the velocity of the source, by default, in the world space. | ||
| /// @param velocity Velocity. | ||
| virtual void setVelocity(const glm::vec3& velocity) = 0; | ||
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| /// @brief Sets the gain of the source. | ||
| /// @param gain Gain. | ||
| virtual void setGain(float gain) = 0; | ||
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| /// @brief Sets the pitch of the source. | ||
| /// @param pitch Pitch. | ||
| virtual void setPitch(float pitch) = 0; | ||
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| /// @brief Sets whether the source plays in a loop. | ||
| /// @param looping Looping flag. | ||
| virtual void setLooping(bool looping) = 0; | ||
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| /// @brief Sets whether the source position and velocity is relative to the listener or | ||
| /// not. | ||
| /// @param relative Relative flag. | ||
| virtual void setRelative(cubos::core::al::Listener listener) = 0; | ||
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| /// @brief Sets the maximum distance at which the source is audible. | ||
| /// @param maxDistance Maximum distance. | ||
| virtual void setMaxDistance(float maxDistance) = 0; | ||
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| /// @brief Sets the minimum distance at which the source starts to attenuate. | ||
| /// @param minDistance Minimum distance. | ||
| virtual void setMinDistance(float minDistance) = 0; | ||
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| /// @brief Sets the cone angle, in degrees. While also setting the outerGain. | ||
| /// @param innerAngle Outer angle, in degrees. | ||
| /// @param outerAngle Inner angle, in degrees. | ||
| /// @param coneGain Gain. | ||
| virtual void setCone(float innerAngle, float outerAngle, float outerGain) = 0; | ||
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| /// @brief Sets the cone direction of the source. | ||
| /// @param direction Direction. | ||
| virtual void setConeDirection(const glm::vec3& direction) = 0; | ||
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| /// @brief Plays the source. | ||
| virtual void play() = 0; | ||
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| protected: | ||
| Source() = default; | ||
| }; | ||
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| // Abstract audio listener. | ||
| class CUBOS_CORE_API Listener | ||
| { | ||
| public: | ||
| virtual ~Listener() = default; | ||
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| /// @brief Sets the velocity of the listener. Used to implement the doppler effect. | ||
| /// @param velocity Velocity of the listener. | ||
| virtual void setVelocity(const glm::vec3& velocity) = 0; | ||
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| /// @brief Sets the position of the listener. | ||
| /// @param position Position. | ||
| virtual void setPosition(const glm::vec3& position) = 0; | ||
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| /// @brief Sets the orientation of the listener. | ||
| /// @param forward Forward direction of the listener. | ||
| /// @param up Up direction of the listener. | ||
| virtual void setOrientation(const glm::vec3& forward, const glm::vec3& up) = 0; | ||
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| protected: | ||
| Listener() = default; | ||
| }; | ||
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| /// @brief Audio device interface used to wrap low-level audio rendering APIs. | ||
| class CUBOS_CORE_API AudioDevice | ||
| { | ||
| public: | ||
| virtual ~AudioDevice() = default; | ||
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| /// @brief Forbid copy construction. | ||
| AudioDevice(const AudioDevice&) = delete; | ||
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| /// @brief Creates a new audio source. | ||
| /// @return Handle of the new source. | ||
| virtual std::shared_ptr<impl::Source> createSource() = 0; | ||
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| /// @brief Creates a new audio listener. | ||
| /// @return Handle of the new listener. | ||
| virtual std::shared_ptr<impl::Listener> listener(size_t index) = 0; | ||
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| protected: | ||
| AudioDevice() = default; | ||
| }; | ||
| } // namespace impl | ||
| } // namespace cubos::core::al |
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