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zcmusic.cpp
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zcmusic.cpp
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/* ZQuest Classic Music Library */
/* ------------------------------------*/
/* Wrapper for transparently extending */
/* supported music file formats. */
#include "base/zc_alleg.h" // TODO: why do we get "_malloca macro redefinition" in Windows debug builds without this include?
#include <cstring>
#ifdef _DEBUG
#ifdef _malloca
#undef _malloca
#endif
#endif
#include <aldumb.h>
#ifdef SOUND_LIBS_BUILT_FROM_SOURCE
#include <gme.h>
#endif
#include "base/zsys.h"
#include "base/util.h"
#include "zcmusic.h"
#include <filesystem>
#include <stdlib.h>
#include <allegro5/allegro_audio.h>
#ifdef __EMSCRIPTEN__
#include "base/emscripten_utils.h"
#endif
using namespace util;
#ifndef SOUND_LIBS_BUILT_FROM_SOURCE
//short of fixing gme, these warnings will always be there...
#pragma warning(disable:4512) //assignment operator could not be generated
#pragma warning(disable:4100) //unreferenced formal parameter
#include "Nsf_Emu.h"
#include "Gbs_Emu.h"
#include "Spc_Emu.h"
#include "Vgm_Emu.h"
#include "Gym_Emu.h"
#pragma warning(default:4100)
#pragma warning(default:4512)
#endif
#ifdef _MSC_VER
#define stricmp _stricmp
#endif
// MSVC fix
#if _MSC_VER >= 1900
FILE _iob[] = { *stdin, *stdout, *stderr };
extern "C" FILE * __cdecl __iob_func(void) { return _iob; }
#endif
// might consider replacing the following with user defined values from the
// 'sound' dialog in the player. This way, each person could tune it as needed.
#define DUH_CHANNELS 2 // stereo
#define DUH_SAMPLES 44100 //Hz
#define DUH_RESAMPLE 1
int32_t zcmusic_bufsz = 64;
static int32_t zcmusic_bufsz_private = 64;
ALLEGRO_MUTEX* playlistmutex = NULL;
ZCMUSIC* zcmusic_load_for_quest(const char* filename, char* quest_path)
{
if (!al_is_audio_installed())
return nullptr;
char exe_path[PATH_MAX];
get_executable_name(exe_path, PATH_MAX);
auto exe_dir = std::filesystem::path(exe_path).parent_path();
auto quest_dir = std::filesystem::path(quest_path).parent_path();
for (int i = 0; i <= 5; i++)
{
std::filesystem::path dir;
if (i == 0)
{
dir = exe_dir;
}
else if (i == 1)
{
dir = quest_dir;
}
else if (i == 2)
{
dir = exe_dir / std::filesystem::path(quest_path).filename();
dir += "_music";
}
else if (i == 3)
{
dir = exe_dir / "music";
}
else if (i == 4)
{
dir = quest_dir / std::filesystem::path(quest_path).filename();
dir += "_music";
}
else if (i == 5)
{
dir = quest_dir / "music";
}
auto path = dir / filename;
if (!std::filesystem::exists(path))
continue;
ZCMUSIC *newzcmusic = zcmusic_load_file(path.string().c_str());
if (newzcmusic)
return newzcmusic;
}
return nullptr;
}
typedef struct DUHFILE : public ZCMUSIC
{
DUH *s;
AL_DUH_PLAYER *p;
} DUHFILE;
// used for allegro streamed music (ogg, mp3)
typedef struct ALSTREAMFILE : public ZCMUSIC
{
ALLEGRO_AUDIO_STREAM *s;
char *fname;
int32_t vol;
} ALSTREAMFILE;
typedef struct GMEFILE : public ZCMUSIC
{
AUDIOSTREAM *stream;
struct Music_Emu* emu;
int32_t samples;
} GMEFILE;
#include <vector>
static std::vector<ZCMUSIC*> playlist; //yeah, I'm too lazy to do it myself
static int32_t libflags = 0;
// forward declarations
ALSTREAMFILE *load_alstream_file(const char *filename);
void unload_alstream_file(ALSTREAMFILE *als);
int32_t stream_getpos(ALSTREAMFILE* als);
void stream_setpos(ALSTREAMFILE* als, int32_t msecs);
void stream_setspeed(ALSTREAMFILE* als, int32_t speed);
int32_t stream_getlength(ALSTREAMFILE* als);
void stream_setloop(ALSTREAMFILE* als, double start, double end);
Music_Emu* gme_load_file(const char* filename, const char* ext);
int32_t poll_gme_file(GMEFILE *gme);
int32_t unload_gme_file(GMEFILE* gme);
int32_t gme_play(GMEFILE *gme, int32_t vol);
void zcm_extract_name(const char *path,char *name,int32_t type)
{
int32_t l=(int32_t)strlen(path);
int32_t i=l;
while(i>0 && path[i-1]!='/' && path[i-1]!='\\')
--i;
int32_t n=0;
if(type==FILENAME8__)
{
while(i<l && n<8 && path[i]!='.')
name[n++]=path[i++];
}
else if(type==FILENAME8_3)
{
while(i<l && n<12)
name[n++]=path[i++];
}
else
{
while(i<l)
name[n++]=path[i++];
}
name[n]=0;
}
bool zcmusic_init(int32_t flags) /* = -1 */
{
zcmusic_bufsz_private = zcmusic_bufsz;
if(flags & ZCMF_DUH)
{
dumb_register_stdfiles();
dumb_resampling_quality = DUH_RESAMPLE;
libflags |= ZCMF_DUH;
}
if(flags & ZCMF_OGG)
{
libflags |= ZCMF_OGG;
}
if(flags & ZCMF_MP3)
{
libflags |= ZCMF_MP3;
}
if(flags & ZCMF_GME)
{
libflags |= ZCMF_GME;
}
if (!playlistmutex) playlistmutex = al_create_mutex();
return true;
}
bool zcmusic_poll(int32_t flags) /* = -1 */
{
al_lock_mutex(playlistmutex);
//do all kinds of gymnastics to get around Allegro stupidity
// char *oldpwd = getCurPackfilePassword();
// setPackfilePassword(NULL);
std::vector<ZCMUSIC*>::iterator b = playlist.begin();
while(b != playlist.end())
{
switch((*b)->playing)
{
case ZCM_STOPPED:
// if it has stopped, remove it from playlist;
b = playlist.erase(b);
break;
case ZCM_PLAYING:
(*b)->position++;
switch((*b)->type & flags & libflags) // only poll those specified by 'flags'
{
case ZCMF_DUH:
if(((DUHFILE*)*b)->p)
al_poll_duh(((DUHFILE*)*b)->p);
break;
case ZCMF_OGG:
break;
case ZCMF_MP3:
break;
case ZCMF_GME:
if(((GMEFILE*)*b)->emu)
poll_gme_file((GMEFILE*)*b);
break;
}
[[fallthrough]];
case ZCM_PAUSED:
b++;
}
}
al_unlock_mutex(playlistmutex);
// setPackfilePassword(oldpwd);
// if(oldpwd != NULL)
// delete[] oldpwd;
return true;
}
void zcmusic_exit()
{
al_lock_mutex(playlistmutex);
std::vector<ZCMUSIC*>::iterator b = playlist.begin();
while(b != playlist.end())
{
zcmusic_unload_file(*b);
b = playlist.erase(b);
}
playlist.clear();
al_unlock_mutex(playlistmutex);
if(libflags & ZCMF_DUH)
{
dumb_exit();
libflags ^= ZCMF_DUH;
}
if(libflags & ZCMF_OGG)
{
libflags ^= ZCMF_OGG;
}
if(libflags & ZCMF_MP3)
{
libflags ^= ZCMF_MP3;
}
if(libflags & ZCMF_GME)
{
libflags ^= ZCMF_GME;
}
}
ZCMUSIC * zcmusic_load_file(const char *filename)
{
if(filename == NULL)
{
return NULL;
}
al_trace("Trying to load %s\n", filename);
if(strlen(filename)>255)
{
al_trace("Music file '%s' not loaded: filename too long\n", filename);
return NULL;
}
#ifdef __EMSCRIPTEN__
if (strncmp("/_quests/", filename, strlen("/_quests/")) == 0)
{
em_fetch_file(filename);
}
#endif
char *ext=get_extension(filename);
if((stricmp(ext,"ogg")==0) && (libflags & ZCMF_OGG))
{
ALSTREAMFILE *p = load_alstream_file(filename);
if(!p)
{
al_trace("OGG file '%s' not loaded.\n",filename);
goto error;
}
p->fname = (char*)malloc(strlen(filename)+1);
if(!p->fname)
{
unload_alstream_file(p);
goto error;
}
strcpy(p->fname, filename);
p->type = ZCMF_OGG;
p->playing = ZCM_STOPPED;
p->fadeoutframes = 0;
ZCMUSIC *music=(ZCMUSIC*)p;
zcm_extract_name(filename, music->filename, FILENAMEALL);
music->filename[255]='\0';
music->track=0;
return music;
}
if((stricmp(ext,"mp3")==0) && (libflags & ZCMF_MP3))
{
ALSTREAMFILE *p = load_alstream_file(filename);
if(!p)
{
al_trace("MP3 file '%s' not found.\n",filename);
goto error;
}
p->fname = (char*)malloc(strlen(filename)+1);
if(!p->fname)
{
unload_alstream_file(p);
goto error;
}
strcpy(p->fname, filename);
p->type = ZCMF_MP3;
p->playing = ZCM_STOPPED;
p->fadeoutframes = 0;
ZCMUSIC *music=(ZCMUSIC*)p;
zcm_extract_name(filename, music->filename, FILENAMEALL);
music->filename[255]='\0';
music->track=0;
return music;
}
if(libflags & ZCMF_DUH)
{
DUH* d = NULL;
if(stricmp(ext,"it")==0)
{
d = dumb_load_it(filename);
if(!d) al_trace("IT file '%s' not found.\n",filename);
}
else if(stricmp(ext,"xm")==0)
{
d = dumb_load_xm(filename);
if(!d) al_trace("XM file '%s' not found.\n",filename);
}
else if(stricmp(ext,"s3m")==0)
{
d = dumb_load_s3m(filename);
if(!d) al_trace("S3M file '%s' not found.\n",filename);
}
else if(stricmp(ext,"mod")==0)
{
#ifdef SOUND_LIBS_BUILT_FROM_SOURCE
// No idea what this second arg does...
d = dumb_load_mod(filename, 2);
#else
d = dumb_load_mod(filename);
#endif
if(!d) al_trace("MOD file '%s' not found.\n",filename);
}
if(d)
{
DUHFILE *p = (DUHFILE*)malloc(sizeof(DUHFILE));
if(!p)
{
unload_duh(d);
goto error;
}
p->type = ZCMF_DUH;
p->playing = ZCM_STOPPED;
p->s = d;
p->p = NULL;
p->fadeoutframes = 0;
ZCMUSIC *music=(ZCMUSIC*)p;
zcm_extract_name(filename, music->filename, FILENAMEALL);
music->filename[255]='\0';
music->track=0;
return music;
}
}
if((libflags & ZCMF_GME))
{
if((stricmp(ext,"spc")==0) || (stricmp(ext,"gbs")==0) || (stricmp(ext,"vgm")==0)|| (stricmp(ext,"gym")==0)|| (stricmp(ext,"nsf")==0))
{
Music_Emu *emu;
emu=gme_load_file(std::string(filename).c_str(), ext);
if(emu)
{
GMEFILE *p=(GMEFILE*)malloc(sizeof(GMEFILE));
if(!p) return NULL;
p->type = ZCMF_GME;
p->playing = ZCM_STOPPED;
p->emu = emu;
p->fadeoutframes = 0;
ZCMUSIC *music=(ZCMUSIC*)p;
zcm_extract_name(filename, music->filename, FILENAMEALL);
music->filename[255]='\0';
music->track=0;
return music;
}
else al_trace("%s file '%s' not found.\n",ext,filename);
}
}
error:
return NULL;
}
bool zcmusic_play(ZCMUSIC* zcm, int32_t vol) /* = FALSE */
{
// the libraries require polling
// of individual streams, so here we must keep
// record of each file which is
// playing, so we can iterate over all of them
// when zcmusic_poll() is called.
//
// In addition, any music library which actually
// has a 'play' function or similar will be
// called from here.
if(zcm == NULL) return FALSE;
int32_t ret = TRUE;
if(zcm->playing != ZCM_STOPPED) // adjust volume
{
ret = zcmusic_set_volume(zcm, vol);
}
else
{
switch(zcm->type & libflags)
{
case ZCMF_DUH:
if(((DUHFILE*)zcm)->s != NULL)
{
((DUHFILE*)zcm)->p = al_start_duh(((DUHFILE*)zcm)->s, DUH_CHANNELS, 0/*pos*/, ((float)vol) / (float)255, (zcmusic_bufsz_private*1024)/*bufsize*/, DUH_SAMPLES);
ret = (((DUHFILE*)zcm)->p != NULL) ? TRUE : FALSE;
}
break;
case ZCMF_OGG:
case ZCMF_MP3:
if (((ALSTREAMFILE*)zcm)->s != NULL)
{
al_set_audio_stream_gain(((ALSTREAMFILE*)zcm)->s, vol / 255.0);
((ALSTREAMFILE*)zcm)->vol = vol;
ret = al_set_audio_stream_playing(((ALSTREAMFILE*)zcm)->s, true);
}
else
{
ret = FALSE;
}
break;
case ZCMF_GME:
if(((GMEFILE*)zcm)->emu != NULL)
{
gme_play((GMEFILE*) zcm, vol);
}
break;
}
if(ret != FALSE)
{
zcm->position=0;
zcm->playing = ZCM_PLAYING;
al_lock_mutex(playlistmutex);
playlist.push_back(zcm);
al_unlock_mutex(playlistmutex);
}
}
return ret!=0;
}
bool zcmusic_pause(ZCMUSIC* zcm, int32_t pause = -1)
{
// This function suspends play of the music indicated
// by 'zcm'. Passing 0 for pause will resume; passing
// -1 (or if the default argument is invoked) will
// toggle the current state; passing 1 will pause.
if(zcm == NULL) return FALSE;
al_lock_mutex(playlistmutex);
if(zcm->playing != ZCM_STOPPED)
{
int32_t p = ZCM_PLAYING;
switch(pause)
{
case ZCM_TOGGLE:
p = (zcm->playing == ZCM_PAUSED) ? ZCM_PLAYING : ZCM_PAUSED;
break;
case ZCM_RESUME:
p = ZCM_PLAYING;
break;
case ZCM_PAUSE:
p = ZCM_PAUSED;
break;
}
if(p != zcm->playing) // if the state has actually changed
{
zcm->playing = p;
switch(zcm->type & libflags)
{
case ZCMF_DUH:
if(((DUHFILE*)zcm)->p != NULL)
{
if(p == ZCM_PAUSED)
al_pause_duh(((DUHFILE*)zcm)->p);
else
al_resume_duh(((DUHFILE*)zcm)->p);
}
break;
case ZCMF_OGG:
al_set_audio_stream_playing(((ALSTREAMFILE*)zcm)->s, p != ZCM_PAUSED);
break;
case ZCMF_MP3:
al_set_audio_stream_playing(((ALSTREAMFILE*)zcm)->s, p != ZCM_PAUSED);
break;
case ZCMF_GME:
if(((GMEFILE*)zcm)->emu != NULL)
{
if(p == ZCM_PAUSED)
{
voice_stop(((GMEFILE*)zcm)->stream->voice);
}
else
{
voice_start(((GMEFILE*)zcm)->stream->voice);
}
}
break;
}
}
}
al_unlock_mutex(playlistmutex);
return TRUE;
}
bool zcmusic_stop(ZCMUSIC* zcm)
{
// this function will stop playback of 'zcm' and reset
// the stream position to the beginning.
if(zcm == NULL) return FALSE;
al_lock_mutex(playlistmutex);
switch(zcm->type & libflags)
{
case ZCMF_DUH:
if(((DUHFILE*)zcm)->p != NULL)
{
al_stop_duh(((DUHFILE*)zcm)->p);
((DUHFILE*)zcm)->p = NULL;
zcm->playing = ZCM_STOPPED;
}
break;
case ZCMF_OGG:
al_set_audio_stream_playing(((ALSTREAMFILE*)zcm)->s, false);
al_seek_audio_stream_secs(((ALSTREAMFILE*)zcm)->s, 0);
break;
case ZCMF_MP3:
al_set_audio_stream_playing(((ALSTREAMFILE*)zcm)->s, false);
al_seek_audio_stream_secs(((ALSTREAMFILE*)zcm)->s, 0);
break;
case ZCMF_GME:
if(((GMEFILE*)zcm)->emu != NULL)
{
if(zcm->playing != ZCM_STOPPED) stop_audio_stream(((GMEFILE*)zcm)->stream);
zcm->playing = ZCM_STOPPED;
}
break;
}
al_unlock_mutex(playlistmutex);
return TRUE;
}
bool zcmusic_set_volume(ZCMUSIC* zcm, int32_t vol)
{
if(zcm == NULL) return FALSE;
if(zcm->playing != ZCM_STOPPED) // adjust volume
{
switch(zcm->type & libflags)
{
case ZCMF_DUH:
if(((DUHFILE*)zcm)->p != NULL)
al_duh_set_volume(((DUHFILE*)zcm)->p, (float)vol / (float)255);
break;
case ZCMF_OGG:
case ZCMF_MP3:
if(((ALSTREAMFILE*)zcm)->s != NULL)
{
al_set_audio_stream_gain(((ALSTREAMFILE*)zcm)->s, vol / 255.0);
((ALSTREAMFILE*)zcm)->vol = vol;
}
break;
case ZCMF_GME:
// need to figure out volume switch
break;
}
}
return true;
}
void zcmusic_unload_file(ZCMUSIC* &zcm)
{
// this will unload and destroy all of the data/etc.
// associated with 'zcm'. Also sets the pointer to
// NULL so you don't try to use it later.
if(zcm == NULL) return;
// explicitly remove it from the playlist since we're
// freeing the memory which holds the ZCM struct.
// don't want to leave an soon-to-be invalid pointers
// lying around to cause crashes.
{
al_lock_mutex(playlistmutex);
std::vector<ZCMUSIC*>::iterator b = playlist.begin();
while(b != playlist.end())
{
if(*b == zcm)
{
b = playlist.erase(b);
}
else
{
b++;
}
}
al_unlock_mutex(playlistmutex);
}
switch(zcm->type & libflags)
{
case ZCMF_DUH:
if(((DUHFILE*)zcm)->p != NULL)
{
zcmusic_stop(zcm);
((DUHFILE*)zcm)->p = NULL;
}
if(((DUHFILE*)zcm)->s != NULL)
{
unload_duh(((DUHFILE*)zcm)->s);
((DUHFILE*)zcm)->s = NULL;
free(zcm);
}
break;
case ZCMF_OGG:
case ZCMF_MP3:
unload_alstream_file((ALSTREAMFILE*)zcm);
break;
case ZCMF_GME:
unload_gme_file((GMEFILE*)zcm);
break;
}
zcm = NULL;
return;
}
int32_t zcmusic_get_tracks(ZCMUSIC* zcm)
{
if(zcm == NULL) return 0;
switch(zcm->type & libflags)
{
case ZCMF_DUH:
case ZCMF_OGG:
case ZCMF_MP3:
return 0;
break;
case ZCMF_GME:
if(((GMEFILE*)zcm)->emu != NULL)
{
int32_t t= gme_track_count(((GMEFILE*)zcm)->emu);
return (t>1)?t:0;
}
else
{
return 0;
}
break;
}
return 0;
}
int32_t zcmusic_change_track(ZCMUSIC* zcm, int32_t tracknum)
{
if(zcm == NULL) return -1;
switch(zcm->type & libflags)
{
case ZCMF_DUH:
case ZCMF_OGG:
case ZCMF_MP3:
return -1;
break;
case ZCMF_GME:
if(((GMEFILE*)zcm)->emu != NULL)
{
al_lock_mutex(playlistmutex);
int32_t t= gme_track_count(((GMEFILE*)zcm)->emu);
if(tracknum<0 || tracknum>=t)
{
tracknum=0;
}
gme_start_track(((GMEFILE*)zcm)->emu, tracknum);
zcm->track=tracknum;
al_unlock_mutex(playlistmutex);
return tracknum;
}
else
{
return -1;
}
break;
}
return 0;
}
std::string zcmusic_get_track_name(ZCMUSIC *zcm, int track)
{
return "";
}
int32_t zcmusic_get_curpos(ZCMUSIC* zcm)
{
if(zcm == NULL) return -10000;
switch(zcm->type & libflags)
{
case ZCMF_OGG:
case ZCMF_MP3:
return stream_getpos((ALSTREAMFILE*)zcm);
}
return -10000;
}
void zcmusic_set_curpos(ZCMUSIC* zcm, int32_t value)
{
if(zcm == NULL) return;
switch(zcm->type & libflags)
{
case ZCMF_OGG:
case ZCMF_MP3:
stream_setpos((ALSTREAMFILE*)zcm, value);
break;
}
return;
}
void zcmusic_set_speed(ZCMUSIC* zcm, int32_t value)
{
if(zcm == NULL) return;
switch(zcm->type & libflags)
{
case ZCMF_OGG:
case ZCMF_MP3:
stream_setspeed((ALSTREAMFILE*)zcm, value);
break;
}
return;
}
int32_t zcmusic_get_length(ZCMUSIC* zcm)
{
if (zcm == NULL) return -10000;
switch (zcm->type & libflags)
{
case ZCMF_OGG:
case ZCMF_MP3:
return stream_getlength((ALSTREAMFILE*)zcm);
break;
}
return -10000;
}
void zcmusic_set_loop(ZCMUSIC* zcm, double start, double end)
{
if (zcm == NULL) return;
switch (zcm->type & libflags)
{
case ZCMF_OGG:
case ZCMF_MP3:
stream_setloop((ALSTREAMFILE*)zcm, start, end);
break;
}
return;
}
int32_t zcmusic_get_type(ZCMUSIC* zcm)
{
return zcm->type & libflags;
}
ALSTREAMFILE *load_alstream_file(const char *filename)
{
ALSTREAMFILE *p = NULL;
if((p = (ALSTREAMFILE*)malloc(sizeof(ALSTREAMFILE)))==NULL)
return NULL;
al_reserve_samples(5);
ALLEGRO_AUDIO_STREAM* stream = al_load_audio_stream(filename, 4, 2048);
if (!stream)
goto error;
if (!al_attach_audio_stream_to_mixer(stream, al_get_default_mixer()))
{
al_destroy_audio_stream(stream);
goto error;
}
al_set_audio_stream_playing(stream, false);
al_set_audio_stream_playmode(stream, ALLEGRO_PLAYMODE_LOOP);
p->s = stream;
p->fadeoutframes = 0;
return p;
error:
if(p)
free(p);
return NULL;
}
void unload_alstream_file(ALSTREAMFILE *als)
{
if(als != NULL)
{
if(als->s != NULL)
{
al_set_audio_stream_playing(als->s, false);
al_destroy_audio_stream(als->s);
als->s = NULL;
}
if(als->fname != NULL)
{
free(als->fname);
}
free(als);
}
}
int32_t stream_getpos(ALSTREAMFILE* als)
{
if (als->s != NULL)
{
return int32_t(al_get_audio_stream_position_secs(als->s) * 10000.0);
}
return -10000;
}
void stream_setpos(ALSTREAMFILE* als, int32_t msecs)
{
if (als->s != NULL)
{
al_seek_audio_stream_secs(als->s, double(msecs) / 10000.0);
}
}
void stream_setspeed(ALSTREAMFILE* als, int32_t speed)
{
if (als->s != NULL)
{
al_set_audio_stream_speed(als->s, float(speed / 10000.0));
}
}
int32_t stream_getlength(ALSTREAMFILE* als)
{
if (als->s != NULL)
{