384 lines
8.3 KiB
C
384 lines
8.3 KiB
C
/*
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This file is part of Warzone 2100.
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Copyright (C) 1999-2004 Eidos Interactive
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Copyright (C) 2005-2007 Warzone Resurrection Project
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Warzone 2100 is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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Warzone 2100 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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You should have received a copy of the GNU General Public License
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along with Warzone 2100; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <string.h>
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#include <physfs.h>
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#include "lib/framework/frame.h"
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#ifdef __MACOSX__
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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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#ifndef WZ_NOOGG
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#include <ogg/ogg.h>
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#include <vorbis/codec.h>
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#include <vorbis/vorbisenc.h>
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#include <vorbis/vorbisfile.h>
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#endif
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#include "audio.h"
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#include "cdaudio.h"
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#include "mixer.h"
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#include "playlist.h"
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extern BOOL openal_initialized;
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#define NB_BUFFERS 16
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#define BUFFER_SIZE (16384)
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static BOOL music_initialized;
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static PHYSFS_file* music_file = NULL;
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enum { WZ_NONE,
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WZ_OGG } music_file_format;
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#ifndef WZ_NOOGG
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static OggVorbis_File ogg_stream;
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static vorbis_info* ogg_info;
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static size_t wz_ogg_read( void *ptr, size_t size, size_t nmemb, void *datasource );
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static int wz_ogg_seek( void *datasource, ogg_int64_t offset, int whence );
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static int wz_ogg_close( void *datasource );
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static ov_callbacks wz_ogg_callbacks = { wz_ogg_read, wz_ogg_seek, wz_ogg_close, NULL };
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#endif
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static ALfloat music_volume = 0.5;
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static char music_data[BUFFER_SIZE];
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static unsigned int music_track = 0;
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static ALuint music_buffers[NB_BUFFERS];
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static ALuint music_source;
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static ALenum music_format;
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static unsigned int music_rate;
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//*
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//
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// cdAudio Subclass procedure
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size_t wz_ogg_read( void *ptr, size_t size, size_t nmemb, void *datasource )
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{
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return (PHYSFS_sint64)PHYSFS_read( (PHYSFS_file*)datasource, ptr, (PHYSFS_uint32)size, (PHYSFS_uint32)nmemb );
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}
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int wz_ogg_seek( void *datasource, ogg_int64_t offset, int whence )
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{
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return -1;
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}
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int wz_ogg_close( void *datasource )
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{
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return PHYSFS_close( (PHYSFS_file*)datasource );
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}
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//*
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// ======================================================================
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// ======================================================================
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//
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BOOL cdAudio_Open( char* user_musicdir )
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{
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if (!openal_initialized) {
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return FALSE;
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}
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alGenBuffers(NB_BUFFERS, music_buffers);
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alGenSources(1, &music_source);
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alSourcef (music_source, AL_GAIN, music_volume);
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alSource3f(music_source, AL_POSITION, 0.0, 0.0, 0.0);
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alSource3f(music_source, AL_VELOCITY, 0.0, 0.0, 0.0);
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alSourcef (music_source, AL_ROLLOFF_FACTOR, 0.0);
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alSourcei (music_source, AL_SOURCE_RELATIVE, AL_TRUE);
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PlayList_Init();
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if ( ( user_musicdir == NULL
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|| PlayList_Read(user_musicdir) )
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&& PlayList_Read("music") ) {
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return FALSE;
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}
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music_initialized = TRUE;
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return TRUE;
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}
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//*
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// ======================================================================
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// ======================================================================
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//
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BOOL cdAudio_Close( void )
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{
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alDeleteBuffers(NB_BUFFERS, music_buffers);
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alDeleteSources(1, &music_source);
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PlayList_Quit();
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return TRUE;
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}
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static BOOL cdAudio_OpenTrack(char* filename) {
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if (!music_initialized) {
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return FALSE;
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}
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if (music_file != NULL) {
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PHYSFS_close(music_file);
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}
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music_file_format = WZ_NONE;
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#ifndef WZ_NOOGG
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if (strncasecmp(filename+strlen(filename)-4, ".ogg", 4) == 0)
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{
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music_file = PHYSFS_openRead(filename);
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if (music_file == NULL) {
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debug( LOG_SOUND, "Failed opening %s: %s\n", filename, PHYSFS_getLastError() );
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return FALSE;
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}
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if ( ov_open_callbacks( (void*)music_file, &ogg_stream, NULL, 0, wz_ogg_callbacks ) < 0 ) {
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PHYSFS_close(music_file);
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music_file = NULL;
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return FALSE;
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}
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ogg_info = ov_info(&ogg_stream, -1);
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if (ogg_info->channels == 1) {
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music_format = AL_FORMAT_MONO16;
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} else {
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music_format = AL_FORMAT_STEREO16;
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}
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music_file_format = WZ_OGG;
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return TRUE;
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}
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#endif
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return FALSE; // unhandled
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}
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static BOOL cdAudio_CloseTrack(void) {
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if (music_track != 0) {
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int queued, processed, all;
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alSourceStop(music_source);
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alGetSourcei(music_source, AL_BUFFERS_QUEUED, &queued);
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alGetSourcei(music_source, AL_BUFFERS_PROCESSED, &processed);
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all = queued + processed;
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while (all > 0) {
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ALuint buffer;
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alSourceUnqueueBuffers(music_source, 1, &buffer);
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all--;
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}
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#ifndef WZ_NOOGG
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ov_clear( &ogg_stream );
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#endif // WZ_NOOGG
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PHYSFS_close(music_file);
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music_file = NULL;
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music_track = 0;
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}
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return TRUE;
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}
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static BOOL cdAudio_FillBuffer(ALuint b) {
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int size = 0;
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int section;
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int result = 0;
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while (size < BUFFER_SIZE) {
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#ifndef WZ_NOOGG
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if (music_file_format == WZ_OGG) {
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result = ov_read(&ogg_stream, music_data+size,
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BUFFER_SIZE-size, 0, 2, 1, §ion);
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music_rate = ogg_info->rate;
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}
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#endif
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if (result > 0) {
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size += result;
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} else {
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char* filename;
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for (;;) {
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filename = PlayList_NextSong();
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if (filename == NULL) {
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music_track = 0;
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break;
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}
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if (cdAudio_OpenTrack(filename)) {
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debug( LOG_SOUND, "Now playing %s\n", filename );
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break;
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} else {
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return FALSE; // break out to avoid infinite loops
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}
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}
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}
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}
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if (size == 0) {
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return FALSE;
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}
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alBufferData(b, music_format, music_data, size, music_rate);
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return TRUE;
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}
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//*
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// ======================================================================
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// ======================================================================
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//
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BOOL cdAudio_PlayTrack( SDWORD iTrack )
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{
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unsigned int i;
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cdAudio_CloseTrack();
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PlayList_SetTrack(iTrack);
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{
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char* filename = PlayList_CurrentSong();
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for (;;) {
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if (filename == NULL) {
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music_track = 0;
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return FALSE;
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}
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if (cdAudio_OpenTrack(filename)) {
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music_track = iTrack;
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break;
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} else {
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return FALSE; // break out to avoid infinite loops
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}
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filename = PlayList_NextSong();
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}
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}
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for (i = 0; i < NB_BUFFERS; ++i) {
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if (!cdAudio_FillBuffer(music_buffers[i])) {
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return FALSE;
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}
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}
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alSourceQueueBuffers(music_source, NB_BUFFERS, music_buffers);
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alSourcePlay(music_source);
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return TRUE;
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}
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//*
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// ======================================================================
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// ======================================================================
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//
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BOOL cdAudio_Stop( void )
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{
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cdAudio_CloseTrack();
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return TRUE;
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}
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//*
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// ======================================================================
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// ======================================================================
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//
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BOOL cdAudio_Pause( void )
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{
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return TRUE;
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}
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//*
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// ======================================================================
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// ======================================================================
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//
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BOOL cdAudio_Resume( void )
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{
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return TRUE;
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}
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//*
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// ======================================================================
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// ======================================================================
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//
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void cdAudio_Update( void )
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{
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if ( music_track != 0
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&& music_volume != 0.0) {
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int processed = 0;
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alGetSourcei(music_source, AL_BUFFERS_PROCESSED, &processed);
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while (processed > 0) {
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ALuint buffer;
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alSourceUnqueueBuffers(music_source, 1, &buffer);
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cdAudio_FillBuffer(buffer);
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alSourceQueueBuffers(music_source, 1, &buffer);
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processed--;
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}
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{
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ALenum state;
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alGetSourcei(music_source, AL_SOURCE_STATE, &state);
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if (state != AL_PLAYING) {
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alSourcePlay(music_source);
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}
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}
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}
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}
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//*
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// ======================================================================
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// ======================================================================
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//
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SDWORD mixer_GetCDVolume( void )
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{
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return (SDWORD)(100*music_volume);
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}
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//*
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// ======================================================================
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// ======================================================================
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//
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void mixer_SetCDVolume( SDWORD iVol )
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{
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music_volume = 0.01*iVol;
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if (music_volume < 0.0) {
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music_volume = 0.0;
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} else if (music_volume > 1.0) {
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music_volume = 1.0;
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}
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alSourcef (music_source, AL_GAIN, music_volume);
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}
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