warzone2100/lib/sound/cdaudio.cpp

224 lines
4.6 KiB
C++

/*
This file is part of Warzone 2100.
Copyright (C) 1999-2004 Eidos Interactive
Copyright (C) 2005-2011 Warzone 2100 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 "tracklib.h"
#include "cdaudio.h"
#include "mixer.h"
#include "playlist.h"
static float music_volume = 0.5;
#if !defined(WZ_NOSOUND)
static const size_t bufferSize = 16 * 1024;
static const unsigned int buffer_count = 32;
static bool music_initialized = false;
static bool stopping = true;
static AUDIO_STREAM* cdStream = NULL;
#endif
bool cdAudio_Open(const char* user_musicdir)
{
PlayList_Init();
if (user_musicdir == NULL
|| !PlayList_Read(user_musicdir))
{
return false;
}
debug(LOG_SOUND, "called(%s)", user_musicdir);
#if !defined(WZ_NOSOUND)
music_initialized = true;
stopping = true;
#endif
return true;
}
void cdAudio_Close(void)
{
debug(LOG_SOUND, "called");
cdAudio_Stop();
PlayList_Quit();
#if !defined(WZ_NOSOUND)
music_initialized = false;
stopping = true;
#endif
}
#if !defined(WZ_NOSOUND)
static void cdAudio_TrackFinished(void*);
static bool cdAudio_OpenTrack(const char* filename)
{
if (!music_initialized)
{
return false;
}
debug(LOG_SOUND, "called(%s)", filename);
cdAudio_Stop();
if (strncasecmp(filename+strlen(filename)-4, ".ogg", 4) == 0)
{
PHYSFS_file* music_file = PHYSFS_openRead(filename);
debug(LOG_WZ, "Reading...[directory: %s] %s", PHYSFS_getRealDir(filename), filename);
if (music_file == NULL)
{
debug(LOG_ERROR, "Failed opening file [directory: %s] %s, with error %s", PHYSFS_getRealDir(filename), 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;
}
debug(LOG_SOUND, "successful(%s)", filename);
stopping = false;
return true;
}
return false; // unhandled
}
static void cdAudio_TrackFinished(void* user_data)
{
const char *filename = PlayList_NextSong();
// This pointer is now officially invalidated; so set it to NULL
cdStream = NULL;
if (filename == NULL)
{
debug(LOG_ERROR, "Out of playlist?! was playing %s", (char *)user_data);
return;
}
if (!stopping && cdAudio_OpenTrack(filename))
{
debug(LOG_SOUND, "Now playing %s (was playing %s)", filename, (char *)user_data);
}
}
#endif
bool cdAudio_PlayTrack(SONG_CONTEXT context)
{
debug(LOG_SOUND, "called(%d)", (int)context);
switch (context)
{
#if !defined(WZ_NOSOUND)
case SONG_FRONTEND:
return cdAudio_OpenTrack("music/menu.ogg");
case SONG_INGAME:
{
const char *filename = PlayList_CurrentSong();
if (filename == NULL)
return false;
return cdAudio_OpenTrack(filename);
}
#else
case SONG_FRONTEND:
case SONG_INGAME:
return false;
#endif
}
ASSERT(!"Invalid songcontext", "Invalid song context specified for playing: %u", (unsigned int)context);
return false;
}
void cdAudio_Stop()
{
#if !defined(WZ_NOSOUND)
stopping = true;
debug(LOG_SOUND, "called, cdStream=%p", cdStream);
if (cdStream)
{
sound_StopStream(cdStream);
cdStream = NULL;
sound_Update();
}
#else
debug(LOG_SOUND, "called");
#endif
}
void cdAudio_Pause()
{
debug(LOG_SOUND, "called");
#if !defined(WZ_NOSOUND)
if (cdStream)
{
sound_PauseStream(cdStream);
}
#endif
}
void cdAudio_Resume()
{
debug(LOG_SOUND, "called");
#if !defined(WZ_NOSOUND)
if (cdStream)
{
sound_ResumeStream(cdStream);
}
#endif
}
float sound_GetMusicVolume()
{
return music_volume;
}
void sound_SetMusicVolume(float volume)
{
// Keep volume in the range of 0.0 - 1.0
music_volume = clipf(volume, 0.0f, 1.0f);
#if !defined(WZ_NOSOUND)
// Change the volume of the current stream as well (if any)
if (cdStream)
{
sound_SetStreamVolume(cdStream, music_volume);
}
#endif
}