mirror of https://github.com/stella-emu/stella.git
Changes for the SDL port to use the new sound API. This is still beta
code, and there are still some audio/video sync'ing problems. git-svn-id: svn://svn.code.sf.net/p/stella/code/trunk@115 8b62c5a3-ac7e-4cc8-8f21-d9a121418aba
This commit is contained in:
stephena
parent
36a5c1575d
commit
1810444904
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@ -13,7 +13,7 @@
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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: makefile,v 1.22 2002-10-09 04:38:11 bwmott Exp $
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## $Id: makefile,v 1.23 2002-10-11 13:06:59 stephena Exp $
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##============================================================================
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##============================================================================
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@ -179,7 +179,7 @@ linux-x:
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linux-sdl:
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make stella.sdl \
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INCLUDES="$(INCLUDES) -I$(UI)/sdl -I$(UI)/sound" \
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INCLUDES="$(INCLUDES) -I$(UI)/sdl" \
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SYS_INCLUDES="" \
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OPTIONS="-DBSPF_UNIX=1" \
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OPTIONS+="$(OPTS.SDL)" \
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@ -187,7 +187,7 @@ linux-sdl:
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LDFLAGS+="$(CFLAGS.SDL)" \
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LDLIBS="-lX11 -lXext" \
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LDLIBS+="$(LIBS.SDL)" \
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OBJS="mainSDL.o SndSDL.o RectList.o" \
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OBJS="mainSDL.o SoundSDL.o RectList.o" \
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OBJS+="$(OBJS.SDL)"
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bsdi-x:
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@ -408,8 +408,8 @@ SoundX11.o: $(UI)/x11/SoundX11.cxx
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mainSDL.o: $(UI)/sdl/mainSDL.cxx
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$(CXX) -c $(CXXFLAGS) $(OPTIONS) $(LDFLAGS) $(UI)/sdl/mainSDL.cxx
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SndSDL.o: $(UI)/sdl/SndSDL.cxx $(UI)/sdl/SndSDL.hxx
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$(CXX) -c $(CXXFLAGS) $(OPTIONS) $(LDFLAGS) $(UI)/sdl/SndSDL.cxx
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SoundSDL.o: $(UI)/sdl/SoundSDL.cxx $(UI)/sdl/SoundSDL.hxx
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$(CXX) -c $(CXXFLAGS) $(OPTIONS) $(LDFLAGS) $(UI)/sdl/SoundSDL.cxx
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RectList.o: $(UI)/sdl/RectList.cxx $(UI)/sdl/RectList.hxx
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$(CXX) -c $(CXXFLAGS) $(OPTIONS) $(LDFLAGS) $(UI)/sdl/RectList.cxx
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@ -1,77 +0,0 @@
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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) 1995-1998 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: SndSDL.hxx,v 1.1 2002-08-15 00:29:40 stephena Exp $
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//============================================================================
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#ifndef SOUNDSDL_HXX
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#define SOUNDSDL_HXX
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#include <SDL.h>
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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 the sound API for SDL.
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@author Stephen Anthony
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@version $Id: SndSDL.hxx,v 1.1 2002-08-15 00:29:40 stephena Exp $
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*/
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class SoundSDL : public Sound
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{
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public:
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/**
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Create a new sound object
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*/
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SoundSDL(int volume, bool activate = true);
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/**
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Destructor
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*/
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virtual ~SoundSDL();
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public:
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/**
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Set the value of the specified sound register
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@param reg The sound register to set
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@param val The new value for the sound registers
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*/
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virtual void set(Sound::Register reg, uInt8 val);
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/**
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Set the mute state of the sound object
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@param state Mutes sound iff true
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*/
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virtual void mute(bool state);
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/**
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Set the current volume according to the given percentage
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@param percent Scaled value (0-100) indicating the desired volume
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*/
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void setVolume(int percent);
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private:
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// Indicates if the sound system was initialized
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bool myEnabled;
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// Indicates if the sound is currently muted
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bool isMuted;
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};
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#endif
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@ -13,66 +13,59 @@
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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: SndSDL.cxx,v 1.1 2002-08-15 00:29:40 stephena Exp $
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// $Id: SoundSDL.cxx,v 1.1 2002-10-11 13:07:00 stephena Exp $
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//============================================================================
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#include <SDL.h>
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#include "TIASound.h"
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#include "SndSDL.hxx"
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#include "SoundSDL.hxx"
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#define FRAGSIZE 1 << 10
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static int currentVolume = 0;
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static uInt8 currentVolume;
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static MediaSource* _mediaSource;
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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static void fill_audio(void* udata, Uint8* stream, int len)
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{
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Uint8 buffer[FRAGSIZE];
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if(len > FRAGSIZE)
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len = FRAGSIZE;
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Tia_process(buffer, len);
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SDL_MixAudio(stream, buffer, len, currentVolume);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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SoundSDL::SoundSDL(int volume, bool activate)
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SoundSDL::SoundSDL(bool activate)
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: myIsInitializedFlag(false),
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mySampleRate(31400),
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myFragSize(512),
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myIsMuted(true)
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{
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myEnabled = activate;
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myIsInitializedFlag = activate;
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if(!myEnabled)
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if(!myIsInitializedFlag)
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return;
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if(SDL_InitSubSystem(SDL_INIT_AUDIO) < 0)
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{
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cerr << "Couldn't init SDL audio system: " << SDL_GetError() << endl;
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myEnabled = false;
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myIsInitializedFlag = false;
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mySampleRate = 0;
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return;
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}
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SDL_AudioSpec desired, obtained;
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desired.freq = 31400;
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desired.samples = FRAGSIZE;
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desired.freq = mySampleRate;
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desired.samples = myFragSize;
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desired.format = AUDIO_U8;
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desired.callback = fill_audio;
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desired.callback = fillAudio;
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desired.userdata = NULL;
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desired.channels = 1;
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if(SDL_OpenAudio(&desired, &obtained) < 0)
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{
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cerr << "Couldn't open SDL audio: " << SDL_GetError() << endl;
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myEnabled = false;
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myIsInitializedFlag = false;
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mySampleRate = 0;
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return;
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}
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/* Initialize the TIA Sound Library */
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Tia_sound_init(31400, obtained.freq);
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isMuted = false;
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setVolume(volume);
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myIsMuted = false;
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mySampleRate = obtained.freq;
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// Take care of the static stuff ...
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currentVolume = 0;
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_mediaSource = (MediaSource*) NULL;
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SDL_PauseAudio(0);
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}
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@ -80,69 +73,75 @@ SoundSDL::SoundSDL(int volume, bool activate)
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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SoundSDL::~SoundSDL()
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{
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if(myEnabled)
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SDL_CloseAudio();
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void SoundSDL::set(Sound::Register reg, uInt8 value)
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uInt32 SoundSDL::getSampleRate() const
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{
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if(!myEnabled)
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return;
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return myIsInitializedFlag ? mySampleRate : 0;
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}
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switch(reg)
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{
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case AUDC0:
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Update_tia_sound(0x15, value);
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break;
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case AUDC1:
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Update_tia_sound(0x16, value);
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break;
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case AUDF0:
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Update_tia_sound(0x17, value);
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break;
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case AUDF1:
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Update_tia_sound(0x18, value);
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break;
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case AUDV0:
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Update_tia_sound(0x19, value);
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break;
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case AUDV1:
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Update_tia_sound(0x1A, value);
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break;
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default:
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return;
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break;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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bool SoundSDL::isSuccessfullyInitialized() const
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{
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return myIsInitializedFlag;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void SoundSDL::mute(bool state)
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{
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if(!myEnabled)
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if(!myIsInitializedFlag)
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return;
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// Ignore multiple calls to do the same thing
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if(isMuted == state)
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if(myIsMuted == state)
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return;
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isMuted = state;
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myIsMuted = state;
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SDL_PauseAudio(isMuted ? 1 : 0);
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SDL_PauseAudio(myIsMuted ? 1 : 0);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void SoundSDL::setVolume(int percent)
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void SoundSDL::close()
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{
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if(!myEnabled)
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SDL_PauseAudio(0);
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if(myIsInitializedFlag)
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SDL_CloseAudio();
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myIsInitializedFlag = false;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void SoundSDL::setSoundVolume(uInt32 percent)
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{
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if(!myIsInitializedFlag)
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return;
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if((percent >= 0) && (percent <= 100))
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currentVolume = (int) (((float) percent / 100.0) * (float) SDL_MIX_MAXVOLUME);
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void SoundSDL::updateSound(MediaSource& mediaSource)
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{
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// this is a HUGE HACK and will disappear soon
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_mediaSource = &mediaSource;
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}
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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void SoundSDL::fillAudio(void* udata, uInt8* stream, Int32 len)
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{
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if(!_mediaSource)
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return;
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uInt32 samples = _mediaSource->numberOfAudioSamples();
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if(samples == 0)
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return;
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uInt8 buffer[len];
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_mediaSource->dequeueAudioSamples(buffer, len);
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SDL_MixAudio(stream, buffer, len, currentVolume);
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}
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@ -0,0 +1,111 @@
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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) 1995-1998 by Bradford W. Mott
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//
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// See the file "license" for information on usage and redistribution of
|
||||
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
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//
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// $Id: SoundSDL.hxx,v 1.1 2002-10-11 13:07:01 stephena Exp $
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//============================================================================
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#ifndef SOUNDSDL_HXX
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#define SOUNDSDL_HXX
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#include <SDL.h>
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#include "bspf.hxx"
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#include "MediaSrc.hxx"
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/**
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This class implements the sound API for SDL.
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@author Stephen Anthony
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@version $Id: SoundSDL.hxx,v 1.1 2002-10-11 13:07:01 stephena Exp $
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*/
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class SoundSDL
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{
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public:
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/**
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Create a new sound object
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*/
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SoundSDL(bool activate = true);
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/**
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Destructor
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*/
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virtual ~SoundSDL();
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public:
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/**
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Return the playback sample rate for the sound device.
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@return The playback sample rate
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*/
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uInt32 getSampleRate() const;
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/**
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Return true iff the sound device was successfully initlaized.
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@return true iff the sound device was successfully initlaized.
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*/
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bool isSuccessfullyInitialized() const;
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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 precentage from 0 to 100.
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@param volume The new volume for the sound device
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*/
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void setSoundVolume(uInt32 volume);
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/**
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Update the sound device using the audio sample from the specified
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media source.
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@param mediaSource The media source to get audio samples from.
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*/
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void updateSound(MediaSource& mediaSource);
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/**
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Closes the soudn device
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*/
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void close();
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/**
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Set the mute state of the sound object
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@param state Mutes sound iff true
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*/
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void mute(bool state);
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private:
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// Indicates if the sound device was successfully initialized
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bool myIsInitializedFlag;
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// DSP sample rate
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uInt32 mySampleRate;
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// SDL fragment size
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uInt32 myFragSize;
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// Indicates if the sound is currently muted
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bool myIsMuted;
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/**
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Some stuff which is required to be static since the SDL audio
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callback is a C-style function.
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*/
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private:
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static void fillAudio(void* udata, uInt8* stream, Int32 len);
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};
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#endif
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|
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@ -13,7 +13,7 @@
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// See the file "license" for information on usage and redistribution of
|
||||
// this file, and for a DISCLAIMER OF ALL WARRANTIES.
|
||||
//
|
||||
// $Id: mainSDL.cxx,v 1.29 2002-10-05 12:49:49 stephena Exp $
|
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// $Id: mainSDL.cxx,v 1.30 2002-10-11 13:07:01 stephena Exp $
|
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//============================================================================
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#include <fstream>
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@ -36,10 +36,9 @@
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#include "MediaSrc.hxx"
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#include "PropsSet.hxx"
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#include "System.hxx"
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#include "SndUnix.hxx"
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#include "RectList.hxx"
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#include "Settings.hxx"
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#include "SndSDL.hxx"
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#include "SoundSDL.hxx"
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#ifdef HAVE_PNG
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#include "Snapshot.hxx"
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|
|
@ -1563,15 +1562,16 @@ int main(int argc, char* argv[])
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return 0;
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}
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// Create a sound object for use with the console
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SoundSDL sound(settings->theDesiredVolume);
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// Create a sound object for playing audio
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SoundSDL sound;
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sound.setSoundVolume(settings->theDesiredVolume);
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// Get just the filename of the file containing the ROM image
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const char* filename = (!strrchr(file, '/')) ? file : strrchr(file, '/') + 1;
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// Create the 2600 game console
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theConsole = new Console(image, size, filename,
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theEvent, propertiesSet, sound);
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theEvent, propertiesSet, sound.getSampleRate());
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|
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// Free the image since we don't need it any longer
|
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delete[] image;
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|
|
@ -1580,12 +1580,14 @@ int main(int argc, char* argv[])
|
|||
if(!setupDisplay())
|
||||
{
|
||||
cerr << "ERROR: Couldn't set up display.\n";
|
||||
sound.close();
|
||||
cleanup();
|
||||
return 0;
|
||||
}
|
||||
if(!setupJoystick())
|
||||
{
|
||||
cerr << "ERROR: Couldn't set up joysticks.\n";
|
||||
sound.close();
|
||||
cleanup();
|
||||
return 0;
|
||||
}
|
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|
|
@ -1623,6 +1625,7 @@ int main(int argc, char* argv[])
|
|||
|
||||
startTime = getTicks();
|
||||
theConsole->mediaSource().update();
|
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sound.updateSound(theConsole->mediaSource());
|
||||
updateDisplay(theConsole->mediaSource());
|
||||
handleEvents();
|
||||
|
||||
|
|
@ -1662,6 +1665,7 @@ int main(int argc, char* argv[])
|
|||
if(!thePauseIndicator)
|
||||
{
|
||||
theConsole->mediaSource().update();
|
||||
sound.updateSound(theConsole->mediaSource());
|
||||
}
|
||||
updateDisplay(theConsole->mediaSource());
|
||||
handleEvents();
|
||||
|
|
@ -1695,6 +1699,7 @@ int main(int argc, char* argv[])
|
|||
}
|
||||
|
||||
// Cleanup time ...
|
||||
sound.close();
|
||||
cleanup();
|
||||
return 0;
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue