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122 lines
3.4 KiB
C++
122 lines
3.4 KiB
C++
/*
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** music_opl.cpp
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** Plays raw OPL formats
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**
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**---------------------------------------------------------------------------
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** Copyright 1998-2008 Randy Heit
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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*/
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#include "i_musicinterns.h"
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#include "oplsynth/musicblock.h"
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#include "oplsynth/opl.h"
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static bool OPL_Active;
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EXTERN_CVAR (Int, opl_numchips)
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EXTERN_CVAR(Int, opl_core)
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int getOPLCore(const char* args)
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{
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int current_opl_core = opl_core;
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if (args != NULL && *args >= '0' && *args < '4') current_opl_core = *args - '0';
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return current_opl_core;
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}
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OPLMUSSong::OPLMUSSong (FileReader &reader, const char *args)
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{
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int samples = int(OPL_SAMPLE_RATE / 14);
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const char* error;
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int core = getOPLCore(args);
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auto data = reader.Read();
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Music = new OPLmusicFile (data.Data(), data.Size(), core, opl_numchips, error);
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if (!Music->IsValid())
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{
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Printf(PRINT_BOLD, "%s", error? error : "Invalid OPL format\n");
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delete Music;
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return;
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}
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m_Stream = GSnd->CreateStream (FillStream, samples*4,
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(core == 0 ? SoundStream::Mono : 0) | SoundStream::Float, int(OPL_SAMPLE_RATE), this);
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if (m_Stream == NULL)
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{
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Printf (PRINT_BOLD, "Could not create music stream.\n");
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delete Music;
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return;
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}
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OPL_Active = true;
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}
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OPLMUSSong::~OPLMUSSong ()
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{
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OPL_Active = false;
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Stop ();
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if (Music != NULL)
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{
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delete Music;
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}
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}
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bool OPLMUSSong::IsValid () const
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{
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return m_Stream != NULL;
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}
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void OPLMUSSong::ChangeSettingInt(const char * name, int val)
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{
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if (!strcmp(name, "opl.numchips"))
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Music->ResetChips (val);
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}
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bool OPLMUSSong::IsPlaying ()
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{
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return m_Status == STATE_Playing;
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}
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void OPLMUSSong::Play (bool looping, int subsong)
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{
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m_Status = STATE_Stopped;
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m_Looping = looping;
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Music->SetLooping (looping);
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Music->Restart ();
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if (m_Stream == NULL || m_Stream->Play (true, snd_musicvolume))
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{
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m_Status = STATE_Playing;
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}
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}
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bool OPLMUSSong::FillStream (SoundStream *stream, void *buff, int len, void *userdata)
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{
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OPLMUSSong *song = (OPLMUSSong *)userdata;
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return song->Music->ServiceStream (buff, len);
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}
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