Audio: added Context class.

src/Audio/Audio.h

@@ -32,6 +32,7 @@ namespace Magnum { namespace Audio {
 
 class AbstractImporter;
 class Buffer;
+class Context;
 class Source;
 /* Renderer used only statically */
 

src/Audio/CMakeLists.txt

@@ -30,6 +30,7 @@ set(MagnumAudio_SOURCES
     AbstractImporter.cpp
     Audio.cpp
     Buffer.cpp
+    Context.cpp
     Renderer.cpp
     Source.cpp)
 
@@ -37,6 +38,7 @@ set(MagnumAudio_HEADERS
     AbstractImporter.h
     Audio.h
     Buffer.h
+    Context.h
     Renderer.h
     Source.h
 

src/Audio/Context.cpp

@@ -0,0 +1,65 @@
+/*
+    This file is part of Magnum.
+
+    Copyright © 2010, 2011, 2012, 2013 Vladimír Vondruš <mosra@centrum.cz>
+
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of this software and associated documentation files (the "Software"),
+    to deal in the Software without restriction, including without limitation
+    the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included
+    in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
+*/
+
+#include "Context.h"
+
+#include <alc.h>
+#include <Utility/Assert.h>
+#include <Utility/Debug.h>
+
+#include "Magnum.h"
+
+namespace Magnum { namespace Audio {
+
+Context* Context::_current = nullptr;
+
+Context::Context() {
+    CORRADE_ASSERT(!_current, "Audio::Context: context already created", );
+
+    /* Open default device */
+    const ALCchar* const defaultDevice = alcGetString(nullptr, ALC_DEFAULT_DEVICE_SPECIFIER);
+    _device = alcOpenDevice(defaultDevice);
+    if(!_device) {
+        Error() << "Audio::Context: cannot open sound device" << defaultDevice;
+        std::exit(1);
+    }
+
+    _context = alcCreateContext(_device, nullptr);
+    if(!_context) {
+        Error() << "Audio::Context: cannot create context:" << alcGetError(_device);
+        std::exit(1);
+    }
+
+    alcMakeContextCurrent(_context);
+    _current = this;
+}
+
+Context::~Context() {
+    CORRADE_INTERNAL_ASSERT(_current == this);
+
+    alcDestroyContext(_context);
+    alcCloseDevice(_device);
+}
+
+}}

src/Audio/Context.h

@@ -0,0 +1,95 @@
+#ifndef Magnum_Audio_Context_h
+#define Magnum_Audio_Context_h
+/*
+    This file is part of Magnum.
+
+    Copyright © 2010, 2011, 2012, 2013 Vladimír Vondruš <mosra@centrum.cz>
+
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of this software and associated documentation files (the "Software"),
+    to deal in the Software without restriction, including without limitation
+    the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included
+    in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+    THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
+*/
+
+/** @file
+ * @brief Class Magnum::Audio::Context
+ */
+
+#include <al.h>
+#include <string>
+
+#include "Audio/magnumAudioVisibility.h"
+
+#ifndef DOXYGEN_GENERATING_OUTPUT
+typedef struct ALCdevice_struct ALCdevice;
+typedef struct ALCcontext_struct ALCcontext;
+#endif
+
+namespace Magnum { namespace Audio {
+
+/**
+@brief OpenAL context
+ */
+class MAGNUM_AUDIO_EXPORT Context {
+    public:
+        /** @brief Current context */
+        static Context* current() { return _current; }
+
+        /**
+         * @brief Constructor
+         *
+         * Creates OpenAL context.
+         */
+        explicit Context();
+
+        /**
+         * @brief Destructor
+         *
+         * Destroys OpenAL context.
+         */
+        ~Context();
+
+        /**
+         * @brief Vendor string
+         *
+         * @see rendererString(), @fn_al{GetString} with @def_al{VENDOR}
+         */
+        std::string vendorString() const { return alGetString(AL_VENDOR); }
+
+        /**
+         * @brief %Renderer string
+         *
+         * @see vendorString(), @fn_al{GetString} with @def_al{RENDERER}
+         */
+        std::string rendererString() const { return alGetString(AL_RENDERER); }
+
+        /**
+         * @brief Version string
+         *
+         * @see @fn_al{GetString} with @def_al{VERSION}
+         */
+        std::string versionString() const { return alGetString(AL_VERSION); }
+
+    private:
+        static Context* _current;
+
+        ALCdevice* _device;
+        ALCcontext* _context;
+};
+
+}}
+
+#endif

src/Context.h

@@ -24,7 +24,7 @@
     DEALINGS IN THE SOFTWARE.
 */
 
-/** @file
+/** @file /Context.h
  * @brief Enum Magnum::Version, class Magnum::Context, Magnum::Extension, macro MAGNUM_ASSERT_VERSION_SUPPORTED(), MAGNUM_ASSERT_EXTENSION_SUPPORTED()
  */