mirror of https://github.com/stella-emu/stella.git
Forgot to include these new files in the last commit. The SoundNull
class is used when compiling Stella without any sound support whatsoever. git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@400 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba
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stephena
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//============================================================================
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//
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// SSSS tt lll lll
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// SS SS tt ll ll
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// SS tttttt eeee ll ll aaaa
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// SSSS tt ee ee ll ll aa
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// SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator"
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// SS SS tt ee ll ll aa aa
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// SSSS ttt eeeee llll llll aaaaa
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//
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// Copyright (c) 1995-2004 by Bradford W. Mott
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//
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// See the file "license" for information on usage and redistribution of
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// this file, and for a DISCLAIMER OF ALL WARRANTIES.
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//
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// $Id: SoundNull.cxx,v 1.1 2005-04-28 19:30:26 stephena Exp $
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//============================================================================
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#include "Serializer.hxx"
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#include "Deserializer.hxx"
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#include "bspf.hxx"
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#include "OSystem.hxx"
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#include "Settings.hxx"
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#include "SoundNull.hxx"
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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SoundNull::SoundNull(OSystem* osystem)
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: Sound(osystem)
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{
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// Add the sound object to the system
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myOSystem->attach(this);
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// Show some info
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if(myOSystem->settings().getBool("showinfo"))
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cout << "Sound support not available." << endl << endl;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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SoundNull::~SoundNull()
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{
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool SoundNull::load(Deserializer& in)
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{
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string soundDevice = "TIASound";
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if(in.getString() != soundDevice)
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return false;
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uInt8 reg;
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reg = (uInt8) in.getLong();
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reg = (uInt8) in.getLong();
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reg = (uInt8) in.getLong();
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reg = (uInt8) in.getLong();
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reg = (uInt8) in.getLong();
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reg = (uInt8) in.getLong();
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// myLastRegisterSetCycle
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in.getLong();
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return true;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool SoundNull::save(Serializer& out)
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{
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out.putString("TIASound");
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uInt8 reg = 0;
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out.putLong(reg);
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out.putLong(reg);
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out.putLong(reg);
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out.putLong(reg);
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out.putLong(reg);
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out.putLong(reg);
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// myLastRegisterSetCycle
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out.putLong(0);
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return true;
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}
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//============================================================================
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//
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// SSSS tt lll lll
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// SS SS tt ll ll
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// SS tttttt eeee ll ll aaaa
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// SSSS tt ee ee ll ll aa
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// SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator"
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// SS SS tt ee ll ll aa aa
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// SSSS ttt eeeee llll llll aaaaa
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//
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// Copyright (c) 1995-2005 by Bradford W. Mott
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//
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// See the file "license" for information on usage and redistribution of
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// this file, and for a DISCLAIMER OF ALL WARRANTIES.
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//
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// $Id: SoundNull.hxx,v 1.1 2005-04-28 19:30:26 stephena Exp $
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//============================================================================
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#ifndef SOUND_NULL_HXX
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#define SOUND_NULL_HXX
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class OSystem;
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class Serializer;
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class Deserializer;
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#include "bspf.hxx"
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#include "Sound.hxx"
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/**
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This class implements a Null sound object, where-by sound generation
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is completely disabled.
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@author Stephen Anthony
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@version $Id: SoundNull.hxx,v 1.1 2005-04-28 19:30:26 stephena Exp $
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*/
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class SoundNull : public Sound
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{
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public:
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/**
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Create a new sound object. The init method must be invoked before
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using the object.
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*/
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SoundNull(OSystem* osystem);
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/**
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Destructor
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*/
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virtual ~SoundNull();
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public:
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/**
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Enables/disables the sound subsystem.
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@param enable Either true or false, to enable or disable the sound system
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@return Whether the sound system was enabled or disabled
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*/
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void setEnabled(bool enable) { }
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/**
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The system cycle counter is being adjusting by the specified amount. Any
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members using the system cycle counter should be adjusted as needed.
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@param amount The amount the cycle counter is being adjusted by
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*/
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void adjustCycleCounter(Int32 amount) { }
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/**
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Sets the display framerate. Sound generation for NTSC and PAL games
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depends on the framerate, so we need to set it here.
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@param framerate The base framerate depending on NTSC or PAL ROM
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*/
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void setFrameRate(uInt32 framerate) { }
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/**
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Initializes the sound device. This must be called before any
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calls are made to derived methods.
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@param forcerestart Do a soft or hard reset of the sound subsystem
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*/
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void initialize(bool forcerestart = false) { }
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/**
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Return true iff the sound device was successfully initialized.
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@return true iff the sound device was successfully initialized.
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*/
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bool isSuccessfullyInitialized() const { return false; }
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/**
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Set the mute state of the sound object. While muted no sound is played.
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@param state Mutes sound if true, unmute if false
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*/
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void mute(bool state) { }
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/**
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Reset the sound device.
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*/
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void reset() { }
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/**
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Sets the sound register to a given value.
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@param addr The register address
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@param value The value to save into the register
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@param cycle The system cycle at which the register is being updated
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*/
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void set(uInt16 addr, uInt8 value, Int32 cycle) { }
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/**
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Sets the volume of the sound device to the specified level. The
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volume is given as a percentage from 0 to 100. Values outside
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this range indicate that the volume shouldn't be changed at all.
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@param percent The new volume percentage level for the sound device
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*/
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void setVolume(Int32 percent) { }
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/**
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Adjusts the volume of the sound device based on the given direction.
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@param direction Increase or decrease the current volume by a predefined
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amount based on the direction (1 = increase, -1 =decrease)
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*/
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void adjustVolume(Int8 direction) { }
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public:
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/**
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Loads the current state of this device from the given Deserializer.
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@param in The deserializer device to load from.
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@return The result of the load. True on success, false on failure.
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*/
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bool load(Deserializer& in);
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/**
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Saves the current state of this device to the given Serializer.
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@param out The serializer device to save to.
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@return The result of the save. True on success, false on failure.
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*/
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bool save(Serializer& out);
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};
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#endif
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//============================================================================
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//
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// SSSS tt lll lll
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// SS SS tt ll ll
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// SS tttttt eeee ll ll aaaa
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// SSSS tt ee ee ll ll aa
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// SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator"
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// SS SS tt ee ll ll aa aa
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// SSSS ttt eeeee llll llll aaaaa
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//
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// Copyright (c) 1995-2004 by Bradford W. Mott
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//
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// See the file "license" for information on usage and redistribution of
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// this file, and for a DISCLAIMER OF ALL WARRANTIES.
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//
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// $Id: Sound.cxx,v 1.18 2005-03-26 19:26:47 stephena Exp $
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//============================================================================
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#include "Serializer.hxx"
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#include "Deserializer.hxx"
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#include "bspf.hxx"
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#include "OSystem.hxx"
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#include "Settings.hxx"
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#include "Sound.hxx"
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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Sound::Sound(OSystem* osystem)
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: myOSystem(osystem),
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myIsInitializedFlag(false),
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myLastRegisterSetCycle(0)
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{
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// Add the sound object to the system
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myOSystem->attach(this);
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// Show some info
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if(myOSystem->settings().getBool("showinfo") &&
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!myOSystem->settings().getBool("sound"))
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cout << "Sound disabled." << endl << endl;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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Sound::~Sound()
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{
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Sound::adjustCycleCounter(Int32 amount)
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{
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myLastRegisterSetCycle += amount;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Sound::setFrameRate(uInt32 framerate)
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{
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myDisplayFrameRate = framerate;
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myLastRegisterSetCycle = 0;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Sound::mute(bool state)
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{
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Sound::initialize(bool forcerestart)
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{
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myLastRegisterSetCycle = 0;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool Sound::isSuccessfullyInitialized() const
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{
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return true;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Sound::reset()
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{
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Sound::set(uInt16 addr, uInt8 value, Int32 cycle)
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{
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myLastRegisterSetCycle = cycle;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Sound::setVolume(Int32 volume)
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{
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void Sound::adjustVolume(Int8 direction)
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{
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool Sound::load(Deserializer& in)
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{
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string soundDevice = "TIASound";
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if(in.getString() != soundDevice)
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return false;
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uInt8 reg;
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reg = (uInt8) in.getLong();
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reg = (uInt8) in.getLong();
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reg = (uInt8) in.getLong();
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reg = (uInt8) in.getLong();
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reg = (uInt8) in.getLong();
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reg = (uInt8) in.getLong();
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myLastRegisterSetCycle = (Int32)in.getLong();
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return true;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool Sound::save(Serializer& out)
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{
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out.putString("TIASound");
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uInt8 reg = 0;
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out.putLong(reg);
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out.putLong(reg);
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out.putLong(reg);
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out.putLong(reg);
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out.putLong(reg);
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out.putLong(reg);
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out.putLong(myLastRegisterSetCycle);
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return true;
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}
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