* Removed alut

* Using libsndfile to load sounds and music
* Added support for playing music files

7 files changed, 170 insertions, 67 deletions

diff --git a/src/sound/oalsound/alsound.cpp b/src/sound/oalsound/alsound.cpp
index 80e8fe6..0228498 100644
--- a/src/sound/oalsound/alsound.cpp
+++ b/src/sound/oalsound/alsound.cpp
@@ -27,7 +27,9 @@ ALSound::ALSound()
     mEnabled = false;
     m3D = false;
     mAudioVolume = 1.0f;
+    mMusicVolume = 1.0f;
     mMute = false;
+    mCurrentMusic = new Channel();
     auto pointer = CInstanceManager::GetInstancePointer();
     if (pointer != nullptr)
         CInstanceManager::GetInstancePointer()->AddInstance(CLASS_SOUND, this);
@@ -48,17 +50,21 @@ void ALSound::CleanUp()
     if (mEnabled) {
         GetLogger()->Info("Unloading files and closing device...\n");
         StopAll();
-	
-	for (auto channel : mChannels) {
-	    delete channel.second;
-	}
+
+        for (auto channel : mChannels) {
+            delete channel.second;
+        }
 
         for (auto item : mSounds) {
             delete item.second;
-	}
+        }
 
         mEnabled = false;
-        alutExit();
+
+        mCurrentMusic->FreeBuffer();
+        delete mCurrentMusic;
+        alcDestroyContext(mContext);
+        alcCloseDevice(mDevice);
     }
 }
 
@@ -71,13 +77,20 @@ bool ALSound::Create(bool b3D)
         return true;
 
     GetLogger()->Info("Opening audio device...\n");
-    if (!alutInit(NULL, NULL)) {
-        ALenum error = alutGetError();
-        GetLogger()->Error("Could not open audio device! Reason: %s\n", alutGetErrorString(error));
+    mDevice = alcOpenDevice(NULL);
+    if (!mDevice) {
+        GetLogger()->Error("Could not open audio device!\n");
         return false;
     }
-    GetLogger()->Info("Done.\n");
 
+    mContext = alcCreateContext(mDevice, NULL);
+    if (!mContext) {
+        GetLogger()->Error("Could not create audio context!\n");
+        return false;
+    }
+    alcMakeContextCurrent(mContext);
+
+    GetLogger()->Info("Done.\n");
     mEnabled = true;
     return true;
 }
@@ -119,28 +132,26 @@ void ALSound::SetAudioVolume(int volume)
 
 int ALSound::GetAudioVolume()
 {
-    float volume;
     if ( !mEnabled )
         return 0;
 
-    alGetListenerf(AL_GAIN, &volume);
-    return volume * MAXVOLUME;
+    return mAudioVolume * MAXVOLUME;
 }
 
 
 void ALSound::SetMusicVolume(int volume)
 {
-    // TODO stub! Add music support
+    alListenerf(AL_GAIN, MIN(static_cast<float>(volume) / MAXVOLUME, 1.0f));
+    mMusicVolume = MIN(static_cast<float>(volume) / MAXVOLUME, 1.0f);
 }
 
 
 int ALSound::GetMusicVolume()
 {
-    // TODO stub! Add music support
     if ( !mEnabled )
-        return 0;
+        return 0.0f;
 
-    return 0;
+    return mMusicVolume * MAXVOLUME;
 }
 
 
@@ -242,8 +253,7 @@ bool ALSound::SearchFreeBuffer(Sound sound, int &channel, bool &bAlreadyLoaded)
         auto it = mChannels.end();
         it--;
         int i = (*it).first;
-        while (++i)
-        {
+        while (++i) {
             if (mChannels.find(i) == mChannels.end()) {
                 Channel *chn = new Channel();
                 // check if channel is ready to play music, if not destroy it and seek free one
@@ -307,9 +317,9 @@ int ALSound::Play(Sound sound, Math::Vector pos, float amplitude, float frequenc
     bAlreadyLoaded = false;
     if (!bAlreadyLoaded) {
         if (!mChannels[channel]->SetBuffer(mSounds[sound])) {
-	    mChannels[channel]->SetBuffer(nullptr);
-	    return -1;
-	}
+            mChannels[channel]->SetBuffer(nullptr);
+            return -1;
+        }
     }
 
     Position(channel, pos);
@@ -445,36 +455,36 @@ void ALSound::FrameMove(float delta)
     for (auto it : mChannels) {
         if (!it.second->IsPlaying()) {
             continue;
-	}
+        }
 
         if (!it.second->HasEnvelope())
             continue;
-	
+
         SoundOper &oper = it.second->GetEnvelope();
-	oper.currentTime += delta;
+        oper.currentTime += delta;
         progress = oper.currentTime / oper.totalTime;
         progress = MIN(progress, 1.0f);
 
         // setting volume
         volume = progress * (oper.finalAmplitude - it.second->GetStartAmplitude());
         it.second->SetVolume(volume + it.second->GetStartAmplitude());
-	
-	// setting frequency
+
+        // setting frequency
         frequency = progress * (oper.finalFrequency - it.second->GetStartFrequency()) * it.second->GetStartFrequency() * it.second->GetChangeFrequency() * it.second->GetInitFrequency();
         it.second->AdjustFrequency(frequency);
 
         if (oper.totalTime <= oper.currentTime) {
             if (oper.nextOper == SOPER_LOOP) {
-		oper.currentTime = 0.0f;
+                oper.currentTime = 0.0f;
                 it.second->Play();
             } else {
-		it.second->SetStartAmplitude(oper.finalAmplitude);
-		it.second->SetStartFrequency(oper.finalFrequency);
+                it.second->SetStartAmplitude(oper.finalAmplitude);
+                it.second->SetStartFrequency(oper.finalFrequency);
                 if (oper.nextOper == SOPER_STOP) {
-		    it.second->Stop();
+                    it.second->Stop();
                 }
-                
-		it.second->PopEnvelope();
+
+                it.second->PopEnvelope();
             }
         }
     }
@@ -491,32 +501,67 @@ void ALSound::SetListener(Math::Vector eye, Math::Vector lookat)
 
 bool ALSound::PlayMusic(int rank, bool bRepeat)
 {
-    // TODO stub! Add music support
+    if (!mEnabled) {
+        return false;
+    }
+    
+    if (static_cast<int>(mCurrentMusic->GetSoundType()) != rank) {
+        mCurrentMusic->FreeBuffer();
+
+        if (mMusic.find(rank) == mMusic.end()) {
+            GetLogger()->Info("Requested music %d was not found.\n", rank);
+            return false;
+        }
+
+        Buffer *buffer = new Buffer();
+        buffer->LoadFromFile(mMusic.at(rank), static_cast<Sound>(rank));
+        mCurrentMusic->SetBuffer(buffer);
+    }
+    
+    mCurrentMusic->SetVolume(mMusicVolume);
+    mCurrentMusic->SetLoop(bRepeat);
+    mCurrentMusic->Play();
+    
     return true;
 }
 
 
 bool ALSound::RestartMusic()
 {
-    // TODO stub! Add music support
+    if (!mEnabled || !mCurrentMusic) {
+        return false;
+    }
+
+    mCurrentMusic->Stop();
+    mCurrentMusic->Play();
     return true;
 }
 
 void ALSound::StopMusic()
 {
-    // TODO stub! Add music support
+    if (!mEnabled || !mCurrentMusic) {
+        return;
+    }
+    
     SuspendMusic();
 }
 
 
 bool ALSound::IsPlayingMusic()
 {
-    // TODO stub! Add music support
-    return true;
+    if (!mEnabled || !mCurrentMusic) {
+        return false;
+    }
+    
+    return mCurrentMusic->IsPlaying();
 }
 
 
 void ALSound::SuspendMusic()
 {
-    // TODO stub! Add music support
+    if (!mEnabled || !mCurrentMusic) {
+        return;
+    }
+    
+    mCurrentMusic->Stop();
 }
diff --git a/src/sound/oalsound/alsound.h b/src/sound/oalsound/alsound.h
index 7aeec90..4651e04 100644
--- a/src/sound/oalsound/alsound.h
+++ b/src/sound/oalsound/alsound.h
@@ -22,7 +22,7 @@
 #include <map>
 #include <string>
 
-#include <AL/alut.h>
+#include <AL/al.h>
 
 #include "common/iman.h"
 #include "common/logger.h"
@@ -87,8 +87,10 @@ class ALSound : public CSoundInterface
         bool m3D;
         bool mMute;
         float mAudioVolume;
-        ALCdevice* audioDevice;
-        ALCcontext* audioContext;
+        float mMusicVolume;
+        ALCdevice* mDevice;
+        ALCcontext* mContext;
         std::map<Sound, Buffer*> mSounds;
         std::map<int, Channel*> mChannels;
+        Channel *mCurrentMusic;
 };
diff --git a/src/sound/oalsound/buffer.cpp b/src/sound/oalsound/buffer.cpp
index 27da848..d76b24a 100644
--- a/src/sound/oalsound/buffer.cpp
+++ b/src/sound/oalsound/buffer.cpp
@@ -35,26 +35,43 @@ Buffer::~Buffer() {
 
 bool Buffer::LoadFromFile(std::string filename, Sound sound) {
     mSound = sound;
-
     GetLogger()->Debug("Loading audio file: %s\n", filename.c_str());
-    mBuffer = alutCreateBufferFromFile(filename.c_str());
 
-    ALenum error = alutGetError();
-    if (error) {
-        GetLogger()->Warn("Failed to load file. Reason: %s\n", alutGetErrorString(error));
+    SF_INFO fileInfo;
+    SNDFILE *file = sf_open(filename.c_str(), SFM_READ, &fileInfo);
+
+    GetLogger()->Trace("  channels %d\n", fileInfo.channels);
+    GetLogger()->Trace("  format %d\n", fileInfo.format);
+    GetLogger()->Trace("  frames %d\n", fileInfo.frames);
+    GetLogger()->Trace("  samplerate %d\n", fileInfo.samplerate);
+    GetLogger()->Trace("  sections %d\n", fileInfo.sections);
+
+    if (!file) {
+        GetLogger()->Warn("Could not load file. Reason: %s\n", sf_strerror(file));
         mLoaded = false;
         return false;
     }
 
-    ALint size, bits, channels, freq;
-
-    alGetBufferi(mBuffer, AL_SIZE, &size);
-    alGetBufferi(mBuffer, AL_BITS, &bits);
-    alGetBufferi(mBuffer, AL_CHANNELS, &channels);
-    alGetBufferi(mBuffer, AL_FREQUENCY, &freq);
+    alGenBuffers(1, &mBuffer);
+    if (!mBuffer) {
+        GetLogger()->Warn("Could not create audio buffer\n");
+        mLoaded = false;
+        sf_close(file);
+        return false;
+    }
 
-    mDuration =  static_cast<ALfloat>(size) * 8 / channels / bits / static_cast<ALfloat>(freq);
+    // read chunks of 4096 samples
+    std::vector<uint16_t> data;
+    std::array<int16_t, 4096> buffer;
+    data.reserve(fileInfo.frames);
+    size_t read = 0;
+    while ((read = sf_read_short(file, buffer.data(), buffer.size())) != 0) {
+        data.insert(data.end(), buffer.begin(), buffer.begin() + read);
+    }
+    sf_close(file);   
 
+    alBufferData(mBuffer, fileInfo.channels == 1 ? AL_FORMAT_MONO16 : AL_FORMAT_STEREO16, &data.front(), data.size() * sizeof(uint16_t), fileInfo.samplerate);
+    mDuration = static_cast<float>(fileInfo.frames) / fileInfo.samplerate;
     mLoaded = true;
     return true;
 }
diff --git a/src/sound/oalsound/buffer.h b/src/sound/oalsound/buffer.h
index 8c4a2d3..7286deb 100644
--- a/src/sound/oalsound/buffer.h
+++ b/src/sound/oalsound/buffer.h
@@ -19,8 +19,11 @@
 #pragma once
 
 #include <string>
+#include <vector>
+#include <array>
 
-#include <AL/alut.h>
+#include <AL/al.h>
+#include <sndfile.h>
 
 #include "sound/sound.h"
 #include "common/logger.h"
diff --git a/src/sound/oalsound/channel.cpp b/src/sound/oalsound/channel.cpp
index 4069313..83420ea 100644
--- a/src/sound/oalsound/channel.cpp
+++ b/src/sound/oalsound/channel.cpp
@@ -34,12 +34,15 @@ Channel::Channel() {
     mBuffer = nullptr;
     mLoop = false;
     mInitFrequency = 0.0f;
+    mStartAmplitude = 0.0f;
+    mStartFrequency = 0.0f;
+    mChangeFrequency = 0.0f;
 }
 
 
 Channel::~Channel() {
     if (mReady) {
-	alSourceStop(mSource);
+        alSourceStop(mSource);
         alSourcei(mSource, AL_BUFFER, 0);
         alDeleteSources(1, &mSource);
         if (alCheck())
@@ -223,8 +226,8 @@ bool Channel::SetBuffer(Buffer *buffer) {
     
     mBuffer = buffer;
     if (buffer == nullptr) {
-	alSourcei(mSource, AL_BUFFER, 0);
-	return true;
+        alSourcei(mSource, AL_BUFFER, 0);
+        return true;
     }    
     
     alSourcei(mSource, AL_BUFFER, buffer->GetBuffer());
@@ -237,10 +240,26 @@ bool Channel::SetBuffer(Buffer *buffer) {
 }
 
 
+bool Channel::FreeBuffer() {
+    if (!mReady)
+        return false;
+    
+    if (!mBuffer) {
+        return false;
+    }
+
+    alSourceStop(mSource);
+    alSourcei(mSource, AL_BUFFER, 0);
+    delete mBuffer;
+    mBuffer = nullptr;
+    return true;
+}
+
+
 bool Channel::IsPlaying() {
     ALint status;
     if (!mReady || mBuffer == nullptr)
-	return false;
+        return false;
     
     alGetSourcei(mSource, AL_SOURCE_STATE, &status);
     if (alCheck()) {
@@ -263,7 +282,7 @@ bool Channel::IsLoaded() {
 
 bool Channel::Stop() {
     if (!mReady || mBuffer == nullptr)
-	return false;
+        return false;
     
     alSourceStop(mSource);
     if (alCheck()) {
@@ -277,7 +296,7 @@ bool Channel::Stop() {
 float Channel::GetCurrentTime()
 {
     if (!mReady || mBuffer == nullptr)
-	return 0.0f;
+        return 0.0f;
     
     ALfloat current;
     alGetSourcef(mSource, AL_SEC_OFFSET, &current);
@@ -292,7 +311,7 @@ float Channel::GetCurrentTime()
 void Channel::SetCurrentTime(float current)
 {
     if (!mReady || mBuffer == nullptr)
-	return;
+        return;
     
     alSourcef(mSource, AL_SEC_OFFSET, current);
     if (alCheck())
@@ -303,7 +322,7 @@ void Channel::SetCurrentTime(float current)
 float Channel::GetDuration()
 {
     if (!mReady || mBuffer == nullptr)
-	return 0.0f;
+        return 0.0f;
     
     return mBuffer->GetDuration();
 }
diff --git a/src/sound/oalsound/channel.h b/src/sound/oalsound/channel.h
index 70307ef..8965306 100644
--- a/src/sound/oalsound/channel.h
+++ b/src/sound/oalsound/channel.h
@@ -52,7 +52,7 @@ class Channel
 
         bool SetFrequency(float);
         float GetFrequency();
-	bool AdjustFrequency(float);
+        bool AdjustFrequency(float);
 
         float GetCurrentTime();
         void SetCurrentTime(float);
@@ -62,9 +62,11 @@ class Channel
         float GetVolume();
         bool IsPlaying();
         bool IsReady();
-	bool IsLoaded();
+        bool IsLoaded();
 
         bool SetBuffer(Buffer *);
+        bool FreeBuffer();
+        
         bool HasEnvelope();
         SoundOper& GetEnvelope();
         void PopEnvelope();
@@ -84,7 +86,7 @@ class Channel
         void AddOper(SoundOper);
         void ResetOper();
         Sound GetSoundType();
-	void SetLoop(bool);
+        void SetLoop(bool);
         
     private:
         Buffer *mBuffer;
@@ -97,5 +99,5 @@ class Channel
         float mInitFrequency;
         std::deque<SoundOper> mOper;
         bool mReady;
-	bool mLoop;
+        bool mLoop;
 };
diff --git a/src/sound/sound.h b/src/sound/sound.h
index c9ac349..d152f76 100644
--- a/src/sound/sound.h
+++ b/src/sound/sound.h
@@ -22,6 +22,7 @@
 
 #pragma once
 
+#include <boost/filesystem.hpp>
 
 #include "math/vector.h"
 
@@ -32,6 +33,7 @@
 #include <iostream>
 #include <iomanip>
 #include <sstream>
+#include <map>
 
 
 /*!
@@ -177,6 +179,16 @@ class CSoundInterface
         }
     };
 
+    /** Function called to add all music files to list */
+    inline void AddMusicFiles(std::string path) {
+        for ( int i = 1; i <= 12; i++ ) {
+            std::stringstream filename;
+            filename << path << "/music" << std::setfill('0') << std::setw(3) << i << ".ogg";
+            if (boost::filesystem::exists(filename.str()))
+                mMusic[i] = filename.str();
+        }
+    };
+    
     /** Function called to cache sound effect file.
      *  This function is called by plugin interface for each file.
      * \param bSound - id of a file, will be used to identify sound files
@@ -328,5 +340,8 @@ class CSoundInterface
      * \return return true if music is playing
      */
     inline virtual bool IsPlayingMusic() {return true;};
+
+    protected:
+        std::map<int, std::string> mMusic;
 };