diff options
Diffstat (limited to 'sound/mixer.h')
| -rw-r--r-- | sound/mixer.h | 85 |
1 files changed, 27 insertions, 58 deletions
diff --git a/sound/mixer.h b/sound/mixer.h index 26ae0898fd..28988256b3 100644 --- a/sound/mixer.h +++ b/sound/mixer.h @@ -38,6 +38,7 @@ namespace Audio { class AudioStream; class Channel; class Mixer; +class MixerImpl; /** * A SoundHandle instances corresponds to a specific sound @@ -47,7 +48,7 @@ class Mixer; */ class SoundHandle { friend class Channel; - friend class Mixer; + friend class MixerImpl; uint32 _val; public: inline SoundHandle() : _val(0xFFFFFFFF) {} @@ -104,24 +105,9 @@ public: kMaxMixerVolume = 256 }; -private: - enum { - NUM_CHANNELS = 16 - }; - - OSystem *_syst; - Common::Mutex _mutex; - - int _volumeForSoundType[4]; - - uint32 _handleSeed; - Channel *_channels[NUM_CHANNELS]; - - bool _mixerReady; - public: - Mixer(); - ~Mixer(); + Mixer() {} + virtual ~Mixer() {} @@ -132,8 +118,10 @@ public: * sync with an audio stream. In particular, the Adlib MIDI emulation... * * @return whether the mixer is ready and setup + * + * @todo get rid of this? */ - bool isReady() const { return _mixerReady; } + virtual bool isReady() const = 0; @@ -143,12 +131,12 @@ public: * (using the makeLinearInputStream factory function), which is then * passed on to playInputStream. */ - void playRaw( + virtual void playRaw( SoundType type, SoundHandle *handle, void *sound, uint32 size, uint rate, byte flags, int id = -1, byte volume = kMaxChannelVolume, int8 balance = 0, - uint32 loopStart = 0, uint32 loopEnd = 0); + uint32 loopStart = 0, uint32 loopEnd = 0) = 0; /** * Start playing the given audio input stream. @@ -170,35 +158,35 @@ public: * not stop this particular stream * @param reverseStereo a flag indicating whether left and right channels shall be swapped */ - void playInputStream( + virtual void playInputStream( SoundType type, SoundHandle *handle, AudioStream *input, int id = -1, byte volume = kMaxChannelVolume, int8 balance = 0, bool autofreeStream = true, bool permanent = false, - bool reverseStereo = false); + bool reverseStereo = false) = 0; /** * Stop all currently playing sounds. */ - void stopAll(); + virtual void stopAll() = 0; /** * Stop playing the sound with given ID. * * @param id the ID of the sound to affect */ - void stopID(int id); + virtual void stopID(int id) = 0; /** * Stop playing the sound corresponding to the given handle. * * @param handle the sound to affect */ - void stopHandle(SoundHandle handle); + virtual void stopHandle(SoundHandle handle) = 0; @@ -208,7 +196,7 @@ public: * * @param paused true to pause everything, false to unpause */ - void pauseAll(bool paused); + virtual void pauseAll(bool paused) = 0; /** * Pause/unpause the sound with the given ID. @@ -216,7 +204,7 @@ public: * @param id the ID of the sound to affect * @param paused true to pause the sound, false to unpause it */ - void pauseID(int id, bool paused); + virtual void pauseID(int id, bool paused) = 0; /** * Pause/unpause the sound corresponding to the given handle. @@ -224,7 +212,7 @@ public: * @param handle the sound to affect * @param paused true to pause the sound, false to unpause it */ - void pauseHandle(SoundHandle handle, bool paused); + virtual void pauseHandle(SoundHandle handle, bool paused) = 0; @@ -234,7 +222,7 @@ public: * @param id the ID of the sound to query * @return true if the sound is active */ - bool isSoundIDActive(int id); + virtual bool isSoundIDActive(int id) = 0; /** * Get the sound ID of handle sound @@ -242,7 +230,7 @@ public: * @param handle sound to query * @return sound ID if active */ - int getSoundID(SoundHandle handle); + virtual int getSoundID(SoundHandle handle) = 0; /** * Check if a sound with the given handle is active. @@ -250,7 +238,7 @@ public: * @param handle sound to query * @return true if the sound is active */ - bool isSoundHandleActive(SoundHandle handle); + virtual bool isSoundHandleActive(SoundHandle handle) = 0; @@ -260,7 +248,7 @@ public: * @param handle the sound to affect * @param volume the new channel volume (0 - kMaxChannelVolume) */ - void setChannelVolume(SoundHandle handle, byte volume); + virtual void setChannelVolume(SoundHandle handle, byte volume) = 0; /** * Set the channel balance for the given handle. @@ -269,12 +257,12 @@ public: * @param balance the new channel balance: * (-127 ... 0 ... 127) corresponds to (left ... center ... right) */ - void setChannelBalance(SoundHandle handle, int8 balance); + virtual void setChannelBalance(SoundHandle handle, int8 balance) = 0; /** * Get approximation of for how long the channel has been playing. */ - uint32 getSoundElapsedTime(SoundHandle handle); + virtual uint32 getSoundElapsedTime(SoundHandle handle) = 0; /** * Check whether any channel of the given sound type is active. @@ -284,7 +272,7 @@ public: * @param type the sound type to look for * @return true if any channels of the specified type are active. */ - bool hasActiveChannelOfType(SoundType type); + virtual bool hasActiveChannelOfType(SoundType type) = 0; /** * Set the volume for the given sound type. @@ -292,7 +280,7 @@ public: * @param type the sound type * @param volume the new global volume, 0 - kMaxMixerVolume */ - void setVolumeForSoundType(SoundType type, int volume); + virtual void setVolumeForSoundType(SoundType type, int volume) = 0; /** * Query the global volume. @@ -300,7 +288,7 @@ public: * @param type the sound type * @return the global music volume, 0 - kMaxMixerVolume */ - int getVolumeForSoundType(SoundType type) const; + virtual int getVolumeForSoundType(SoundType type) const = 0; /** * Query the system's audio output sample rate. This returns @@ -308,26 +296,7 @@ public: * * @return the output sample rate in Hz */ - uint getOutputRate() const; - -protected: - void insertChannel(SoundHandle *handle, Channel *chan); - - /** - * Internal main method -- all the actual mixing work is done from here. - */ - void mix(int16 * buf, uint len); - - // FIXME: temporary "public" to allow access to mixCallback - // from within OSystem::makeMixer() -public: - /** - * The mixer callback function, passed on to OSystem::setSoundCallback(). - * This simply calls the mix() method. - */ - static void mixCallback(void *s, byte *samples, int len); - - void setReady(bool ready) { _mixerReady = ready; } + virtual uint getOutputRate() const = 0; }; |