audio: Add pan API

Author: adazem009

src/audio/iaudioplayer.h

@@ -19,6 +19,9 @@ class IAudioPlayer
         virtual float pitch() const = 0;
         virtual void setPitch(float pitch) = 0;
 
+        virtual float pan() const = 0;
+        virtual void setPan(float pan) = 0;
+
         virtual bool isLoaded() const = 0;
 
         virtual void start() = 0;

src/audio/internal/audioplayer.cpp

@@ -59,6 +59,7 @@ bool AudioPlayer::load(unsigned int size, const void *data, unsigned long sample
     m_loaded = true;
     ma_sound_set_volume(m_sound, m_volume);
     ma_sound_set_pitch(m_sound, m_pitch);
+    ma_sound_set_pan(m_sound, m_pan);
     return true;
 }
 
@@ -83,6 +84,7 @@ bool AudioPlayer::loadCopy(IAudioPlayer *player)
     m_copy = true;
     ma_sound_set_volume(m_sound, m_volume);
     ma_sound_set_pitch(m_sound, m_pitch);
+    ma_sound_set_pan(m_sound, m_pan);
     return true;
 }
 
@@ -123,6 +125,22 @@ void AudioPlayer::setPitch(float pitch)
     ma_sound_set_pitch(m_sound, pitch);
 }
 
+float AudioPlayer::pan() const
+{
+    return m_pan;
+}
+
+void AudioPlayer::setPan(float pan)
+{
+    // -1 ... 0 ... 1
+    m_pan = pan;
+
+    if (!m_loaded)
+        return;
+
+    ma_sound_set_pan(m_sound, pan);
+}
+
 bool AudioPlayer::isLoaded() const
 {
     return m_loaded;

src/audio/internal/audioplayer.h

@@ -25,6 +25,9 @@ class AudioPlayer : public IAudioPlayer
         float pitch() const override;
         void setPitch(float pitch) override;
 
+        float pan() const override;
+        void setPan(float pan) override;
+
         bool isLoaded() const override;
 
         void start() override;
@@ -40,6 +43,7 @@ class AudioPlayer : public IAudioPlayer
         bool m_started = false;
         float m_volume = 1;
         float m_pitch = 1;
+        float m_pan = 0;
 };
 
 } // namespace libscratchcpp

src/audio/internal/audioplayerstub.cpp

@@ -38,6 +38,16 @@ void AudioPlayerStub::setPitch(float pitch)
     m_pitch = pitch;
 }
 
+float AudioPlayerStub::pan() const
+{
+    return m_pan;
+}
+
+void AudioPlayerStub::setPan(float pan)
+{
+    m_pan = pan;
+}
+
 bool AudioPlayerStub::isLoaded() const
 {
     return true;

src/audio/internal/audioplayerstub.h

@@ -21,6 +21,9 @@ class AudioPlayerStub : public IAudioPlayer
         float pitch() const override;
         void setPitch(float pitch) override;
 
+        float pan() const override;
+        void setPan(float pan) override;
+
         bool isLoaded() const override;
 
         void start() override;
@@ -31,6 +34,7 @@ class AudioPlayerStub : public IAudioPlayer
     private:
         float m_volume = 1;
         float m_pitch = 1;
+        float m_pan = 0;
 };
 
 } // namespace libscratchcpp

test/mocks/audioplayermock.h

@@ -17,6 +17,9 @@ class AudioPlayerMock : public IAudioPlayer
         MOCK_METHOD(float, pitch, (), (const, override));
         MOCK_METHOD(void, setPitch, (float), (override));
 
+        MOCK_METHOD(float, pan, (), (const, override));
+        MOCK_METHOD(void, setPan, (float), (override));
+
         MOCK_METHOD(bool, isLoaded, (), (const, override));
 
         MOCK_METHOD(void, start, (), (override));