warzone2100/lib/sound/cdaudio.c

216 lines
3.9 KiB
C

/*
This file is part of Warzone 2100.
Copyright (C) 1999-2004 Eidos Interactive
Copyright (C) 2005-2007 Warzone Resurrection Project
Warzone 2100 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
Warzone 2100 is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Warzone 2100; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <string.h>
#include <physfs.h>
#include "lib/framework/frame.h"
#include "audio.h"
#include "track.h"
#include "cdaudio.h"
#include "mixer.h"
#include "playlist.h"
static const size_t bufferSize = 16 * 1024;
static const unsigned int buffer_count = 32;
static bool music_initialized;
static unsigned int music_track = 0;
static float music_volume = 0.5;
static AUDIO_STREAM* cdStream = NULL;
BOOL cdAudio_Open(const char* user_musicdir)
{
PlayList_Init();
if ((user_musicdir == NULL
|| !PlayList_Read(user_musicdir))
&& !PlayList_Read("music"))
{
return FALSE;
}
music_initialized = true;
return TRUE;
}
static void cdAudio_CloseTrack(void)
{
cdAudio_Stop();
if (music_track != 0)
{
music_track = 0;
}
}
void cdAudio_Close(void)
{
cdAudio_CloseTrack();
PlayList_Quit();
music_initialized = false;
}
static void cdAudio_TrackFinished(void*);
static bool cdAudio_OpenTrack(const char* filename)
{
if (!music_initialized)
{
return false;
}
cdAudio_CloseTrack();
#ifndef WZ_NOSOUND
if (strncasecmp(filename+strlen(filename)-4, ".ogg", 4) == 0)
{
PHYSFS_file* music_file = PHYSFS_openRead(filename);
if (music_file == NULL)
{
debug(LOG_ERROR, "cdAudio_OpenTrack: Failed opening file %s, with error %s", filename, PHYSFS_getLastError());
return false;
}
cdStream = sound_PlayStreamWithBuf(music_file, music_volume, cdAudio_TrackFinished, (char*)filename, bufferSize, buffer_count);
if (cdStream == NULL)
{
PHYSFS_close(music_file);
debug(LOG_ERROR, "Failed creating audio stream for %s", filename);
return false;
}
return true;
}
#endif
return false; // unhandled
}
static void cdAudio_TrackFinished(void* user_data)
{
const char* filename;
// HACK: bail out when a song switch has taken place
if (user_data != PlayList_CurrentSong())
{
return;
}
filename = PlayList_NextSong();
// This pointer is now officially invalidated; so set it to NULL
cdStream = NULL;
if (filename == 0)
{
music_track = 0;
return;
}
if (cdAudio_OpenTrack(filename))
{
debug(LOG_SOUND, "Now playing %s", filename);
}
}
BOOL cdAudio_PlayTrack(SDWORD iTrack)
{
cdAudio_CloseTrack();
PlayList_SetTrack(iTrack);
{
const char* filename = PlayList_CurrentSong();
for (;;)
{
if (filename == NULL)
{
music_track = 0;
return FALSE;
}
if (cdAudio_OpenTrack(filename))
{
music_track = iTrack;
break;
}
else
{
return FALSE; // break out to avoid infinite loops
}
filename = PlayList_NextSong();
}
}
return TRUE;
}
void cdAudio_Stop()
{
if (cdStream)
{
sound_StopStream(cdStream);
cdStream = NULL;
}
}
void cdAudio_Pause()
{
if (cdStream)
{
sound_PauseStream(cdStream);
}
}
void cdAudio_Resume()
{
if (cdStream)
{
sound_ResumeStream(cdStream);
}
}
float sound_GetMusicVolume()
{
return music_volume;
}
void sound_SetMusicVolume(float volume)
{
music_volume = volume;
// Keep volume in the range of 0.0 - 1.0
if (music_volume < 0.0)
{
music_volume = 0.0;
}
else if (music_volume > 1.0)
{
music_volume = 1.0;
}
// @todo Implement code to set the volume of the currently playing stream here
}