149 lines
3.5 KiB
C
149 lines
3.5 KiB
C
/*
|
|
* This is an alternate backend for the music system.
|
|
* It uses SDL_mixer to provide a more reliable playback,
|
|
* and allow processing of multiple audio formats.
|
|
*
|
|
* -- MD2211 (2006-04-24)
|
|
*/
|
|
|
|
#include <SDL/SDL.h>
|
|
#include <SDL/SDL_mixer.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "args.h"
|
|
#include "hmp2mid.h"
|
|
#include "digi_mixer_music.h"
|
|
#include "cfile.h"
|
|
|
|
#define MIX_MUSIC_DEBUG 0
|
|
#define MUSIC_FADE_TIME 500 //milliseconds
|
|
#define MUSIC_EXTENSION_ARG "-music_ext"
|
|
|
|
Mix_Music *current_music = NULL;
|
|
|
|
void music_done() {
|
|
Mix_HaltMusic();
|
|
Mix_FreeMusic(current_music);
|
|
current_music = NULL;
|
|
}
|
|
|
|
void convert_hmp(char *filename, char *mid_filename) {
|
|
|
|
if (!PHYSFS_exists(mid_filename))
|
|
{
|
|
const char *err;
|
|
PHYSFS_file *hmp_in;
|
|
PHYSFS_file *mid_out = PHYSFSX_openWriteBuffered(mid_filename);
|
|
|
|
if (!mid_out) {
|
|
fprintf(stderr, "Error could not open: %s for writing: %s\n", mid_filename, PHYSFS_getLastError());
|
|
return;
|
|
}
|
|
|
|
if (MIX_MUSIC_DEBUG) printf("convert_hmp: converting %s to %s\n", filename, mid_filename);
|
|
|
|
hmp_in = PHYSFSX_openReadBuffered(filename);
|
|
|
|
if (!hmp_in) {
|
|
fprintf(stderr, "Error could not open: %s\n", filename);
|
|
PHYSFS_close(mid_out);
|
|
return;
|
|
}
|
|
|
|
err = hmp2mid(hmp_in, mid_out);
|
|
|
|
PHYSFS_close(mid_out);
|
|
PHYSFS_close(hmp_in);
|
|
|
|
if (err) {
|
|
fprintf(stderr, "%s\n", err);
|
|
PHYSFS_delete(mid_filename);
|
|
return;
|
|
}
|
|
}
|
|
else {
|
|
if (MIX_MUSIC_DEBUG) printf("convert_hmp: %s already exists\n", mid_filename);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Plays a music given its name (regular game songs)
|
|
*/
|
|
|
|
void mix_play_music(char *filename, int loop) {
|
|
|
|
loop *= -1;
|
|
int i, got_end=0;
|
|
|
|
char real_filename[PATH_MAX];
|
|
char rel_filename[32]; // just the filename of the actual music file used
|
|
char music_title[16];
|
|
char *basedir = "Music";
|
|
|
|
// Quick hack to filter out the .hmp extension
|
|
for (i=0; !got_end; i++) {
|
|
switch (filename[i]) {
|
|
case '.':
|
|
case '\0':
|
|
music_title[i] = '\0';
|
|
got_end = 1;
|
|
break;
|
|
default:
|
|
music_title[i] = filename[i];
|
|
}
|
|
}
|
|
|
|
if (!PHYSFS_isDirectory(basedir))
|
|
PHYSFS_mkdir(basedir); // tidy up those files
|
|
|
|
// What is the extension of external files? If none, default to internal MIDI
|
|
if (GameArg.SndExternalMusic) {
|
|
sprintf(rel_filename, "%s/%s.%3s", basedir, music_title, GameArg.SndExternalMusic); // add extension
|
|
}
|
|
else {
|
|
sprintf(rel_filename, "%s/%s.mid", basedir, music_title);
|
|
convert_hmp(filename, rel_filename);
|
|
}
|
|
|
|
PHYSFSX_getRealPath(rel_filename, real_filename);
|
|
|
|
mix_play_file("", real_filename, loop);
|
|
}
|
|
|
|
|
|
/*
|
|
* Plays a music file from an absolute path (used by jukebox)
|
|
*/
|
|
|
|
void mix_play_file(char *basedir, char *filename, int loop) {
|
|
|
|
int fn_buf_len = strlen(basedir) + strlen(filename) + 1;
|
|
char real_filename[fn_buf_len];
|
|
sprintf(real_filename, "%s%s", basedir, filename); // build absolute path
|
|
|
|
if ((current_music = Mix_LoadMUS(real_filename))) {
|
|
if (Mix_PlayingMusic()) {
|
|
// Fade-in effect sounds cleaner if we're already playing something
|
|
Mix_FadeInMusic(current_music, loop, MUSIC_FADE_TIME);
|
|
}
|
|
else {
|
|
Mix_PlayMusic(current_music, loop);
|
|
}
|
|
Mix_HookMusicFinished(music_done);
|
|
}
|
|
else {
|
|
fprintf(stderr, "Music %s could not be loaded%s\n", filename, basedir);
|
|
Mix_HaltMusic();
|
|
}
|
|
}
|
|
|
|
void mix_set_music_volume(int vol) {
|
|
//printf("mix_set_music_volume %d\n", vol);
|
|
Mix_VolumeMusic(vol);
|
|
}
|
|
|
|
void mix_stop_music() {
|
|
Mix_HaltMusic();
|
|
}
|