audio_device.hpp

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// audio_device.hpp
/*
  neogfx C++ App/Game Engine
  Copyright (c) 2021 Leigh Johnston.  All Rights Reserved.
  
  This program is free software: you can redistribute it and / or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
  
  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
 
#include <neogfx/neogfx.hpp>
#include <neogfx/audio/i_audio.hpp>
#include <neogfx/audio/i_audio_device.hpp>
#include <neogfx/audio/i_audio_bitstream.hpp>
 
#pragma once
 
namespace neogfx
{
    class audio_device_info : public i_audio_device_info
    {
    public:
        audio_device_info(audio_device_id aId, audio_device_type aType, i_string const& aName, bool aIsDefault, vector<audio_data_format> const& aDataFormats);
        audio_device_info(i_audio_device_info const& aOther);
        ~audio_device_info() override;
    public:
        audio_device_id id() const override;
        audio_device_type type() const override;
        i_string const& name() const override;
        bool is_default() const override;
    public:
        i_vector<audio_data_format> const& data_formats() const override;
    private:
        audio_device_id iId;
        audio_device_type iType;
        string iName;
        bool iIsDefault;
        vector<audio_data_format> iDataFormats;
    };
 
    class audio_device : public reference_counted<i_audio_device>
    {
    public:
        audio_device(audio_context aContext, i_audio_device_info const& aDeviceInfo, audio_data_format const& aDataFormat);
        ~audio_device();
    public:
        i_audio_device_info const& info() const final;
        audio_data_format const& data_format() const final;
    public:
        void start() final;
        void stop() final;
    public:
        void play(i_audio_bitstream& aBitstream, std::chrono::duration<double> const& aDuration) final;
    private:
        mutable std::recursive_mutex iMutex;
        audio_device_info iInfo;
        audio_data_format iDataFormat;
        audio_device_config iConfig;
        audio_device_handle iHandle;
        struct source
        {
            ref_ptr<i_audio_bitstream> bitstream; // todo: should be i_audio_bitstream
            std::optional<std::chrono::steady_clock::time_point> expiryTime;
        };
        std::vector<source> iSources;
    };
}