f59052157d
git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/trunk/supertuxkart@2156 178a84e3-b1eb-0310-8ba1-8eac791a3b58
148 lines
4.1 KiB
C++
148 lines
4.1 KiB
C++
// $Id$
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//
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// SuperTuxKart - a fun racing game with go-kart
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// Copyright (C) 2006 Patrick Ammann <pammann@aro.ch>
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 3
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#if HAVE_OGGVORBIS
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#include <assert.h>
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#include <stdio.h>
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#include <string>
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#ifdef __APPLE__
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# include <OpenAL/al.h>
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#else
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# include <AL/al.h>
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#endif
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#include <SDL/SDL.h>
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#include <SDL/SDL_endian.h>
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#include "sfx_openal.hpp"
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#include "file_manager.hpp"
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#include "user_config.hpp"
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SFXImpl::SFXImpl(const char* filename)
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{
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m_soundBuffer= 0;
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m_soundSource= 0;
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const bool LOADED = load(filename);
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assert( LOADED );
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}
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//-----------------------------------------------------------------------------
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SFXImpl::~SFXImpl()
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{
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alDeleteBuffers(1, &m_soundBuffer);
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alDeleteSources(1, &m_soundSource);
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}
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//-----------------------------------------------------------------------------
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void SFXImpl::play()
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{
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alSourcef(m_soundSource,AL_GAIN,user_config->m_sfx_volume);
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alSourcePlay(m_soundSource);
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// Check (and clear) the error flag
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int error = alGetError();
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if(error != AL_NO_ERROR)
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{
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fprintf(stderr, "SFX OpenAL error: %d\n", error);
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}
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}
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//-----------------------------------------------------------------------------
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bool SFXImpl::load(const char* filename)
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{
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std::string path = file_manager->getSFXFile(filename);
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alGenBuffers(1, &m_soundBuffer);
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if (alGetError() != AL_NO_ERROR)
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{
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fprintf(stderr, "Loading '%s' failed\n",filename);
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return false;
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}
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ALenum format = 0;
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Uint32 size = 0;
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Uint8* data = NULL;
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SDL_AudioSpec spec;
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if( SDL_LoadWAV( path.c_str(), &spec, &data, &size ) == NULL)
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{
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fprintf(stderr, "Error 1 loading SFX: with file %s, SDL_LoadWAV() failed\n", path.c_str());
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return false;
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}
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switch( spec.format )
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{
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case AUDIO_U8:
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case AUDIO_S8:
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if( spec.channels == 2 ) format = AL_FORMAT_STEREO8;
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else format = AL_FORMAT_MONO8;
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break;
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case AUDIO_U16LSB:
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case AUDIO_S16LSB:
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case AUDIO_U16MSB:
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case AUDIO_S16MSB:
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if( spec.channels == 2 ) format = AL_FORMAT_STEREO16;
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else format = AL_FORMAT_MONO16;
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#if defined(WORDS_BIGENDIAN) || SDL_BYTEORDER==SDL_BIG_ENDIAN
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// swap bytes around for big-endian systems
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for(unsigned int n=0; n<size-1; n+=2)
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{
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Uint8 temp = data[n+1];
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data[n+1] = data[n];
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data[n] = temp;
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}
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#endif
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break;
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}
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alBufferData(m_soundBuffer, format, data, size, spec.freq);
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if (alGetError() != AL_NO_ERROR)
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{
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fprintf(stderr, "Error 2 loading SFX: %s failed\n", path.c_str());
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return false;
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}
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SDL_FreeWAV(data);
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alGenSources(1, &m_soundSource );
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if (alGetError() != AL_NO_ERROR)
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{
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fprintf(stderr, "Error 3 loading SFX: %s failed\n", path.c_str());
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return false;
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}
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// not 3D yet
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alSourcei (m_soundSource, AL_BUFFER, m_soundBuffer);
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alSource3f(m_soundSource, AL_POSITION, 0.0, 0.0, 0.0);
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alSource3f(m_soundSource, AL_VELOCITY, 0.0, 0.0, 0.0);
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alSource3f(m_soundSource, AL_DIRECTION, 0.0, 0.0, 0.0);
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alSourcef (m_soundSource, AL_ROLLOFF_FACTOR, 0.0 );
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alSourcei (m_soundSource, AL_SOURCE_RELATIVE, AL_TRUE );
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return true;
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}
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#endif //if HAVE_OGGVORBIS
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