music.c
author Ryan C. Gordon <icculus@icculus.org>
Sat, 19 Nov 2005 18:43:48 +0000
changeset 281 33730d0864d8
parent 280 1e6fd744d20c
child 285 9274a084491d
permissions -rw-r--r--
From: Gabriel <mystml@adinet.com.uy>
To: SDL Mailing List <sdl@libsdl.org>
Date: Thu, 13 Oct 2005 15:00:22 -0300
Subject: [SDL] [PATCH] Correct OGG music looping

Bug description : looping music when playing .ogg files left an audible
gap in the mixer buffer.

Bug fix : OGG_playAudio() now returns the actual read length.
music_mixer restarts the music and calls OGG_playAudio() again if it
didn't fill the buffer.

Notes : Tested in Linux and works fine. Since there's no platform
dependent code involved, it should work everywhere else.

A similar fix for the rest of the music formats should be easy, but
since I can't test it at the time, I opted not to do it.

--Gabriel

--
Gabriel Gambetta
Mystery Studio - http://www.mysterystudio.com
Gabriel on Graphics - http://gabrielongraphics.blogspot.com
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/*
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    SDL_mixer:  An audio mixer library based on the SDL library
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    Copyright (C) 1997-2004 Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Library General Public
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    License as published by the Free Software Foundation; either
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    version 2 of the License, or (at your option) any later version.
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    This library 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 GNU
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    Library General Public License for more details.
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    You should have received a copy of the GNU Library General Public
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    License along with this library; if not, write to the Free
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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    Sam Lantinga
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    slouken@libsdl.org
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*/
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/* $Id$ */
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <assert.h>
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#include "SDL_endian.h"
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#include "SDL_audio.h"
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#include "SDL_timer.h"
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#include "SDL_mixer.h"
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#define SDL_SURROUND
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#ifdef SDL_SURROUND
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#define MAX_OUTPUT_CHANNELS 6
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#else
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#define MAX_OUTPUT_CHANNELS 2
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#endif
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/* The music command hack is UNIX specific */
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#ifndef unix
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#undef CMD_MUSIC
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#endif
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#ifdef CMD_MUSIC
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#include "music_cmd.h"
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#endif
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#ifdef WAV_MUSIC
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#include "wavestream.h"
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#endif
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#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
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#  include "mikmod.h"
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#  if defined(LIBMIKMOD_VERSION)                /* libmikmod 3.1.8 */
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#    define UNIMOD			MODULE
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#    define MikMod_Init()		MikMod_Init(NULL)
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#    define MikMod_LoadSong(a,b)	Player_Load(a,b,0)
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#    ifndef LIBMIKMOD_MUSIC
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#    define MikMod_LoadSongRW(a,b)	Player_LoadRW(a,b,0)
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#    endif
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#    define MikMod_FreeSong		Player_Free
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     extern int MikMod_errno;
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#  else                                        /* old MikMod 3.0.3 */
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#    define MikMod_strerror(x)		_mm_errmsg[x])
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#    define MikMod_errno		_mm_errno
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#  endif
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#endif
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#ifdef MID_MUSIC
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#  ifdef USE_TIMIDITY_MIDI
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#    include "timidity.h"
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#  endif
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#  ifdef USE_NATIVE_MIDI
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#    include "native_midi.h"
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#  endif
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#  if defined(USE_TIMIDITY_MIDI) && defined(USE_NATIVE_MIDI)
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#    define MIDI_ELSE	else
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#  else
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#    define MIDI_ELSE
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#  endif
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#endif
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#ifdef OGG_MUSIC
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#include "music_ogg.h"
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#endif
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#ifdef MP3_MUSIC
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#include "smpeg.h"
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static SDL_AudioSpec used_mixer;
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#endif
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int volatile music_active = 1;
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static int volatile music_stopped = 0;
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static int music_loops = 0;
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static char *music_cmd = NULL;
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static Mix_Music * volatile music_playing = NULL;
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static int music_volume = MIX_MAX_VOLUME;
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static int music_swap8;
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static int music_swap16;
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struct _Mix_Music {
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	Mix_MusicType type;
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	union {
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#ifdef CMD_MUSIC
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		MusicCMD *cmd;
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#endif
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#ifdef WAV_MUSIC
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		WAVStream *wave;
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#endif
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#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
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		UNIMOD *module;
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#endif
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#ifdef MID_MUSIC
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#ifdef USE_TIMIDITY_MIDI
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		MidiSong *midi;
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#endif
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#ifdef USE_NATIVE_MIDI
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		NativeMidiSong *nativemidi;
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#endif
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#endif
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#ifdef OGG_MUSIC
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		OGG_music *ogg;
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#endif
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#ifdef MP3_MUSIC
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		SMPEG *mp3;
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#endif
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	} data;
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	Mix_Fading fading;
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	int fade_step;
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	int fade_steps;
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	int error;
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};
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#ifdef MID_MUSIC
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#ifdef USE_TIMIDITY_MIDI
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static int timidity_ok;
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static int samplesize;
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#endif
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#ifdef USE_NATIVE_MIDI
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static int native_midi_ok;
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#endif
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#endif
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/* Reference for converting mikmod output to 4/6 channels */
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static int current_output_channels;
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static Uint16 current_output_format;
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/* Used to calculate fading steps */
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static int ms_per_step;
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/* Local low-level functions prototypes */
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static void music_internal_initialize_volume(void);
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static void music_internal_volume(int volume);
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static int  music_internal_play(Mix_Music *music, double position);
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static int  music_internal_position(double position);
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static int  music_internal_playing();
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static void music_internal_halt(void);
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/* Support for hooking when the music has finished */
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static void (*music_finished_hook)(void) = NULL;
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void Mix_HookMusicFinished(void (*music_finished)(void))
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{
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	SDL_LockAudio();
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	music_finished_hook = music_finished;
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	SDL_UnlockAudio();
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}
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/* If music isn't playing, halt it if no looping is required, restart it */
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/* otherwhise. NOP if the music is playing */
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static int music_halt_or_loop (void)
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{
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	/* Restart music if it has to loop */
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	if (!music_internal_playing()) 
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	{
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		/* Restart music if it has to loop at a high level */
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		if (music_loops && --music_loops)
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		{
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			Mix_Fading current_fade = music_playing->fading;
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			music_internal_play(music_playing, 0.0);
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			music_playing->fading = current_fade;
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		} 
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		else 
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		{
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			music_internal_halt();
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			if (music_finished_hook)
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				music_finished_hook();
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			return 0;
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		}
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	}
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	return 1;
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}
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/* Mixing function */
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void music_mixer(void *udata, Uint8 *stream, int len)
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{
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	if ( music_playing && music_active ) {
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		/* Handle fading */
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		if ( music_playing->fading != MIX_NO_FADING ) {
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			if ( music_playing->fade_step++ < music_playing->fade_steps ) {
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				int volume;
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				int fade_step = music_playing->fade_step;
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				int fade_steps = music_playing->fade_steps;
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				if ( music_playing->fading == MIX_FADING_OUT ) {
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					volume = (music_volume * (fade_steps-fade_step)) / fade_steps;
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				} else { /* Fading in */
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					volume = (music_volume * fade_step) / fade_steps;
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				}
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				music_internal_volume(volume);
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			} else {
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				if ( music_playing->fading == MIX_FADING_OUT ) {
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					music_internal_halt();
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					if ( music_finished_hook ) {
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						music_finished_hook();
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					}
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					return;
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				}
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				music_playing->fading = MIX_NO_FADING;
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			}
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		}
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		if (music_halt_or_loop() == 0)
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			return;
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		switch (music_playing->type) {
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#ifdef CMD_MUSIC
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			case MUS_CMD:
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				/* The playing is done externally */
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				break;
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#endif
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#ifdef WAV_MUSIC
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			case MUS_WAV:
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				WAVStream_PlaySome(stream, len);
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				break;
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#endif
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#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
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			case MUS_MOD:
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				if (current_output_channels > 2) {
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					int small_len = 2 * len / current_output_channels;
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					int i;
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					Uint8 *src, *dst;
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					VC_WriteBytes((SBYTE *)stream, small_len);
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					/* and extend to len by copying channels */
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					src = stream + small_len;
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					dst = stream + len;
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					switch (current_output_format & 0xFF) {
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						case 8:
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							for ( i=small_len/2; i; --i ) {
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								src -= 2;
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								dst -= current_output_channels;
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								dst[0] = src[0];
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								dst[1] = src[1];
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								dst[2] = src[0];
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								dst[3] = src[1];
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								if (current_output_channels == 6) {
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									dst[4] = src[0];
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									dst[5] = src[1];
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								}
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							}
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							break;
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						case 16:
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							for ( i=small_len/4; i; --i ) {
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								src -= 4;
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								dst -= 2 * current_output_channels;
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								dst[0] = src[0];
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								dst[1] = src[1];
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								dst[2] = src[2];
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								dst[3] = src[3];
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								dst[4] = src[0];
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								dst[5] = src[1];
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								dst[6] = src[2];
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								dst[7] = src[3];
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								if (current_output_channels == 6) {
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									dst[8] = src[0];
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									dst[9] = src[1];
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									dst[10] = src[2];
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									dst[11] = src[3];
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								}
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							}
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							break;
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					}
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				}
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				else VC_WriteBytes((SBYTE *)stream, len);
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				if ( music_swap8 ) {
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					Uint8 *dst;
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					int i;
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					dst = stream;
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					for ( i=len; i; --i ) {
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						*dst++ ^= 0x80;
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					}
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				} else
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				if ( music_swap16 ) {
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					Uint8 *dst, tmp;
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					int i;
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					dst = stream;
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					for ( i=(len/2); i; --i ) {
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						tmp = dst[0];
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						dst[0] = dst[1];
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						dst[1] = tmp;
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						dst += 2;
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					}
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				}
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				break;
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#endif
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#ifdef MID_MUSIC
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#ifdef USE_TIMIDITY_MIDI
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			case MUS_MID:
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				if ( timidity_ok ) {
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					int samples = len / samplesize;
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  					Timidity_PlaySome(stream, samples);
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				}
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				break;
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#endif
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#endif
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#ifdef OGG_MUSIC
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			case MUS_OGG:
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				len = OGG_playAudio(music_playing->data.ogg, stream, len);
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				if (len > 0 && music_halt_or_loop())
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					OGG_playAudio(music_playing->data.ogg, stream, len);
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				break;
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#endif
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#ifdef MP3_MUSIC
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			case MUS_MP3:
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				SMPEG_playAudio(music_playing->data.mp3, stream, len);
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				break;
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#endif
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			default:
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				/* Unknown music type?? */
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				break;
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		}
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   348
	}
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   349
}
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/* Initialize the music players with a certain desired audio format */
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int open_music(SDL_AudioSpec *mixer)
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{
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	int music_error;
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#ifdef LIBMIKMOD_MUSIC
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	CHAR *list;
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#endif
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   358
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   359
	music_error = 0;
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#ifdef WAV_MUSIC
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   361
	if ( WAVStream_Init(mixer) < 0 ) {
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   362
		++music_error;
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   363
	}
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   364
#endif
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#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
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	/* Set the MikMod music format */
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	music_swap8 = 0;
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   368
	music_swap16 = 0;
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   369
	switch (mixer->format) {
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		case AUDIO_U8:
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		case AUDIO_S8: {
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   373
			if ( mixer->format == AUDIO_S8 ) {
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				music_swap8 = 1;
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   375
			}
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   376
			md_mode = 0;
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		}
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		break;
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   379
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   380
		case AUDIO_S16LSB:
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   381
		case AUDIO_S16MSB: {
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			/* See if we need to correct MikMod mixing */
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#if SDL_BYTEORDER == SDL_LIL_ENDIAN
slouken@0
   384
			if ( mixer->format == AUDIO_S16MSB ) {
slouken@0
   385
#else
slouken@0
   386
			if ( mixer->format == AUDIO_S16LSB ) {
slouken@0
   387
#endif
slouken@0
   388
				music_swap16 = 1;
slouken@0
   389
			}
slouken@0
   390
			md_mode = DMODE_16BITS;
slouken@0
   391
		}
slouken@0
   392
		break;
slouken@0
   393
slouken@0
   394
		default: {
slouken@26
   395
			Mix_SetError("Unknown hardware audio format");
slouken@0
   396
			++music_error;
slouken@0
   397
		}
slouken@0
   398
	}
slouken@245
   399
	current_output_channels = mixer->channels;
slouken@245
   400
	current_output_format = mixer->format;
slouken@0
   401
	if ( mixer->channels > 1 ) {
slouken@245
   402
		if ( mixer->channels > MAX_OUTPUT_CHANNELS ) {
slouken@26
   403
			Mix_SetError("Hardware uses more channels than mixer");
slouken@0
   404
			++music_error;
slouken@0
   405
		}
slouken@0
   406
		md_mode |= DMODE_STEREO;
slouken@0
   407
	}
slouken@277
   408
	md_mixfreq = mixer->freq;
slouken@277
   409
	md_device  = 0;
slouken@277
   410
	md_volume  = 96;
slouken@0
   411
	md_musicvolume = 128;
slouken@0
   412
	md_sndfxvolume = 128;
slouken@277
   413
	md_pansep  = 128;
slouken@277
   414
	md_reverb  = 0;
slouken@277
   415
	md_mode    |= DMODE_HQMIXER|DMODE_SOFT_MUSIC|DMODE_SURROUND;
slouken@249
   416
#ifdef LIBMIKMOD_MUSIC
slouken@276
   417
	list = MikMod_InfoDriver();
slouken@276
   418
	if ( list )
slouken@276
   419
	  free(list);
slouken@276
   420
	else
slouken@278
   421
#endif
slouken@277
   422
	MikMod_RegisterDriver(&drv_nos);
slouken@249
   423
#ifdef LIBMIKMOD_MUSIC
slouken@276
   424
	list = MikMod_InfoLoader();
slouken@276
   425
	if ( list )
slouken@276
   426
	  free(list);
slouken@276
   427
	else
slouken@249
   428
#endif
slouken@0
   429
	MikMod_RegisterAllLoaders();
slouken@0
   430
	if ( MikMod_Init() ) {
slouken@29
   431
		Mix_SetError("%s", MikMod_strerror(MikMod_errno));
slouken@0
   432
		++music_error;
slouken@0
   433
	}
slouken@0
   434
#endif
slouken@0
   435
#ifdef MID_MUSIC
slouken@106
   436
#ifdef USE_TIMIDITY_MIDI
slouken@142
   437
	samplesize = mixer->size / mixer->samples;
slouken@100
   438
	if ( Timidity_Init(mixer->freq, mixer->format,
slouken@102
   439
	                    mixer->channels, mixer->samples) == 0 ) {
slouken@100
   440
		timidity_ok = 1;
slouken@0
   441
	} else {
slouken@0
   442
		timidity_ok = 0;
slouken@0
   443
	}
slouken@106
   444
#endif
slouken@100
   445
#ifdef USE_NATIVE_MIDI
slouken@106
   446
#ifdef USE_TIMIDITY_MIDI
slouken@100
   447
	native_midi_ok = !timidity_ok;
slouken@106
   448
	if ( native_midi_ok )
slouken@106
   449
#endif
slouken@101
   450
		native_midi_ok = native_midi_detect();
slouken@100
   451
#endif
slouken@0
   452
#endif
slouken@63
   453
#ifdef OGG_MUSIC
slouken@63
   454
	if ( OGG_init(mixer) < 0 ) {
slouken@63
   455
		++music_error;
slouken@63
   456
	}
slouken@63
   457
#endif
slouken@0
   458
#ifdef MP3_MUSIC
slouken@0
   459
	/* Keep a copy of the mixer */
slouken@0
   460
	used_mixer = *mixer;
slouken@0
   461
#endif
slouken@42
   462
	music_playing = NULL;
megastep@7
   463
	music_stopped = 0;
slouken@0
   464
	if ( music_error ) {
slouken@0
   465
		return(-1);
slouken@0
   466
	}
slouken@0
   467
	Mix_VolumeMusic(SDL_MIX_MAXVOLUME);
slouken@0
   468
slouken@26
   469
	/* Calculate the number of ms for each callback */
slouken@44
   470
	ms_per_step = (int) (((float)mixer->samples * 1000.0) / mixer->freq);
slouken@17
   471
slouken@0
   472
	return(0);
slouken@0
   473
}
slouken@0
   474
slouken@125
   475
/* Portable case-insensitive string compare function */
slouken@125
   476
int MIX_string_equals(const char *str1, const char *str2)
slouken@125
   477
{
slouken@125
   478
	while ( *str1 && *str2 ) {
slouken@125
   479
		if ( toupper((unsigned char)*str1) !=
slouken@125
   480
		     toupper((unsigned char)*str2) )
slouken@125
   481
			break;
slouken@125
   482
		++str1;
slouken@125
   483
		++str2;
slouken@125
   484
	}
slouken@125
   485
	return (!*str1 && !*str2);
slouken@125
   486
}
slouken@125
   487
slouken@0
   488
/* Load a music file */
slouken@0
   489
Mix_Music *Mix_LoadMUS(const char *file)
slouken@0
   490
{
slouken@0
   491
	FILE *fp;
slouken@125
   492
	char *ext;
slouken@245
   493
	Uint8 magic[5], moremagic[9];
slouken@0
   494
	Mix_Music *music;
slouken@0
   495
slouken@0
   496
	/* Figure out what kind of file this is */
slouken@0
   497
	fp = fopen(file, "rb");
slouken@0
   498
	if ( (fp == NULL) || !fread(magic, 4, 1, fp) ) {
slouken@0
   499
		if ( fp != NULL ) {
slouken@0
   500
			fclose(fp);
slouken@0
   501
		}
slouken@26
   502
		Mix_SetError("Couldn't read from '%s'", file);
slouken@0
   503
		return(NULL);
slouken@0
   504
	}
slouken@245
   505
	if (!fread(moremagic, 8, 1, fp)) {
slouken@245
   506
		Mix_SetError("Couldn't read from '%s'", file);
slouken@245
   507
		return(NULL);
slouken@245
   508
	}
slouken@0
   509
	magic[4] = '\0';
slouken@245
   510
	moremagic[8] = '\0';
slouken@0
   511
	fclose(fp);
slouken@0
   512
slouken@125
   513
	/* Figure out the file extension, so we can determine the type */
slouken@125
   514
	ext = strrchr(file, '.');
slouken@125
   515
	if ( ext ) ++ext; /* skip the dot in the extension */
slouken@125
   516
slouken@0
   517
	/* Allocate memory for the music structure */
slouken@0
   518
	music = (Mix_Music *)malloc(sizeof(Mix_Music));
slouken@0
   519
	if ( music == NULL ) {
slouken@26
   520
		Mix_SetError("Out of memory");
slouken@0
   521
		return(NULL);
slouken@0
   522
	}
slouken@0
   523
	music->error = 0;
slouken@0
   524
slouken@0
   525
#ifdef CMD_MUSIC
slouken@0
   526
	if ( music_cmd ) {
slouken@0
   527
		music->type = MUS_CMD;
slouken@0
   528
		music->data.cmd = MusicCMD_LoadSong(music_cmd, file);
slouken@0
   529
		if ( music->data.cmd == NULL ) {
slouken@0
   530
			music->error = 1;
slouken@0
   531
		}
slouken@0
   532
	} else
slouken@0
   533
#endif
slouken@0
   534
#ifdef WAV_MUSIC
slouken@0
   535
	/* WAVE files have the magic four bytes "RIFF"
slouken@0
   536
	   AIFF files have the magic 12 bytes "FORM" XXXX "AIFF"
slouken@0
   537
	 */
slouken@135
   538
	if ( (ext && MIX_string_equals(ext, "WAV")) ||
slouken@245
   539
	     ((strcmp((char *)magic, "RIFF") == 0) && (strcmp((char *)(moremagic+4), "WAVE") == 0)) ||
slouken@57
   540
	     (strcmp((char *)magic, "FORM") == 0) ) {
slouken@0
   541
		music->type = MUS_WAV;
slouken@57
   542
		music->data.wave = WAVStream_LoadSong(file, (char *)magic);
slouken@0
   543
		if ( music->data.wave == NULL ) {
slouken@135
   544
		  	Mix_SetError("Unable to load WAV file");
slouken@0
   545
			music->error = 1;
slouken@0
   546
		}
slouken@0
   547
	} else
slouken@0
   548
#endif
slouken@0
   549
#ifdef MID_MUSIC
slouken@0
   550
	/* MIDI files have the magic four bytes "MThd" */
slouken@135
   551
	if ( (ext && MIX_string_equals(ext, "MID")) ||
slouken@135
   552
	     (ext && MIX_string_equals(ext, "MIDI")) ||
slouken@245
   553
	     strcmp((char *)magic, "MThd") == 0  ||
slouken@245
   554
	     ( strcmp((char *)magic, "RIFF") == 0  &&
slouken@245
   555
	  	strcmp((char *)(moremagic+4), "RMID") == 0 ) ) {
slouken@0
   556
		music->type = MUS_MID;
slouken@98
   557
#ifdef USE_NATIVE_MIDI
slouken@98
   558
  		if ( native_midi_ok ) {
slouken@98
   559
  			music->data.nativemidi = native_midi_loadsong((char *)file);
slouken@98
   560
	  		if ( music->data.nativemidi == NULL ) {
slouken@98
   561
		  		Mix_SetError("%s", native_midi_error());
slouken@98
   562
			  	music->error = 1;
slouken@98
   563
			}
slouken@106
   564
	  	} MIDI_ELSE
slouken@98
   565
#endif
slouken@106
   566
#ifdef USE_TIMIDITY_MIDI
slouken@0
   567
		if ( timidity_ok ) {
slouken@0
   568
			music->data.midi = Timidity_LoadSong((char *)file);
slouken@0
   569
			if ( music->data.midi == NULL ) {
slouken@26
   570
				Mix_SetError("%s", Timidity_Error());
slouken@0
   571
				music->error = 1;
slouken@0
   572
			}
slouken@98
   573
		} else {
slouken@26
   574
			Mix_SetError("%s", Timidity_Error());
slouken@0
   575
			music->error = 1;
slouken@0
   576
		}
slouken@106
   577
#endif
slouken@0
   578
	} else
slouken@0
   579
#endif
slouken@63
   580
#ifdef OGG_MUSIC
slouken@63
   581
	/* Ogg Vorbis files have the magic four bytes "OggS" */
slouken@135
   582
	if ( (ext && MIX_string_equals(ext, "OGG")) ||
slouken@133
   583
	     strcmp((char *)magic, "OggS") == 0 ) {
slouken@63
   584
		music->type = MUS_OGG;
slouken@63
   585
		music->data.ogg = OGG_new(file);
slouken@63
   586
		if ( music->data.ogg == NULL ) {
slouken@63
   587
			music->error = 1;
slouken@63
   588
		}
slouken@63
   589
	} else
slouken@63
   590
#endif
slouken@0
   591
#ifdef MP3_MUSIC
slouken@135
   592
	if ( (ext && MIX_string_equals(ext, "MPG")) ||
icculus@186
   593
	     (ext && MIX_string_equals(ext, "MP3")) ||
slouken@135
   594
	     (ext && MIX_string_equals(ext, "MPEG")) ||
slouken@256
   595
	     (magic[0] == 0xFF && (magic[1] & 0xF0) == 0xF0) ) {
slouken@0
   596
		SMPEG_Info info;
slouken@0
   597
		music->type = MUS_MP3;
slouken@0
   598
		music->data.mp3 = SMPEG_new(file, &info, 0);
slouken@256
   599
		if ( !info.has_audio ) {
slouken@26
   600
			Mix_SetError("MPEG file does not have any audio stream.");
slouken@0
   601
			music->error = 1;
slouken@256
   602
		} else {
slouken@0
   603
			SMPEG_actualSpec(music->data.mp3, &used_mixer);
slouken@0
   604
		}
slouken@0
   605
	} else
slouken@0
   606
#endif
slouken@249
   607
#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
slouken@0
   608
	if ( 1 ) {
slouken@0
   609
		music->type = MUS_MOD;
slouken@0
   610
		music->data.module = MikMod_LoadSong((char *)file, 64);
slouken@0
   611
		if ( music->data.module == NULL ) {
slouken@29
   612
			Mix_SetError("%s", MikMod_strerror(MikMod_errno));
slouken@0
   613
			music->error = 1;
slouken@126
   614
		} else {
slouken@126
   615
			/* Stop implicit looping, fade out and other flags. */
slouken@126
   616
			music->data.module->extspd  = 1;
slouken@126
   617
			music->data.module->panflag = 1;
slouken@126
   618
			music->data.module->wrap    = 0;
slouken@126
   619
			music->data.module->loop    = 0;
slouken@129
   620
#if 0 /* Don't set fade out by default - unfortunately there's no real way
slouken@129
   621
         to query the status of the song or set trigger actions.  Hum. */
slouken@126
   622
			music->data.module->fadeout = 1;
slouken@129
   623
#endif
slouken@0
   624
		}
slouken@0
   625
	} else
slouken@0
   626
#endif
slouken@0
   627
	{
slouken@26
   628
		Mix_SetError("Unrecognized music format");
slouken@0
   629
		music->error = 1;
slouken@0
   630
	}
slouken@0
   631
	if ( music->error ) {
slouken@0
   632
		free(music);
slouken@0
   633
		music = NULL;
slouken@0
   634
	}
slouken@0
   635
	return(music);
slouken@0
   636
}
slouken@0
   637
slouken@0
   638
/* Free a music chunk previously loaded */
slouken@0
   639
void Mix_FreeMusic(Mix_Music *music)
slouken@0
   640
{
slouken@0
   641
	if ( music ) {
slouken@173
   642
		/* Stop the music if it's currently playing */
slouken@173
   643
		SDL_LockAudio();
slouken@173
   644
		if ( music == music_playing ) {
slouken@173
   645
			/* Wait for any fade out to finish */
slouken@173
   646
			while ( music->fading == MIX_FADING_OUT ) {
slouken@173
   647
				SDL_UnlockAudio();
slouken@173
   648
				SDL_Delay(100);
slouken@173
   649
				SDL_LockAudio();
slouken@173
   650
			}
slouken@173
   651
			if ( music == music_playing ) {
slouken@173
   652
				music_internal_halt();
megastep@4
   653
			}
slouken@0
   654
		}
slouken@173
   655
		SDL_UnlockAudio();
slouken@0
   656
		switch (music->type) {
slouken@0
   657
#ifdef CMD_MUSIC
slouken@0
   658
			case MUS_CMD:
slouken@0
   659
				MusicCMD_FreeSong(music->data.cmd);
slouken@0
   660
				break;
slouken@0
   661
#endif
slouken@0
   662
#ifdef WAV_MUSIC
slouken@0
   663
			case MUS_WAV:
slouken@0
   664
				WAVStream_FreeSong(music->data.wave);
slouken@0
   665
				break;
slouken@0
   666
#endif
slouken@249
   667
#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
slouken@0
   668
			case MUS_MOD:
slouken@0
   669
				MikMod_FreeSong(music->data.module);
slouken@0
   670
				break;
slouken@0
   671
#endif
slouken@0
   672
#ifdef MID_MUSIC
slouken@0
   673
			case MUS_MID:
slouken@98
   674
#ifdef USE_NATIVE_MIDI
slouken@98
   675
  				if ( native_midi_ok ) {
slouken@98
   676
					native_midi_freesong(music->data.nativemidi);
slouken@106
   677
				} MIDI_ELSE
slouken@98
   678
#endif
slouken@106
   679
#ifdef USE_TIMIDITY_MIDI
slouken@98
   680
				if ( timidity_ok ) {
slouken@98
   681
					Timidity_FreeSong(music->data.midi);
slouken@98
   682
				}
slouken@106
   683
#endif
slouken@0
   684
				break;
slouken@0
   685
#endif
slouken@63
   686
#ifdef OGG_MUSIC
slouken@63
   687
			case MUS_OGG:
slouken@63
   688
				OGG_delete(music->data.ogg);
slouken@63
   689
				break;
slouken@63
   690
#endif
slouken@0
   691
#ifdef MP3_MUSIC
slouken@26
   692
			case MUS_MP3:
slouken@0
   693
				SMPEG_delete(music->data.mp3);
slouken@0
   694
				break;
slouken@0
   695
#endif
slouken@0
   696
			default:
slouken@0
   697
				/* Unknown music type?? */
slouken@0
   698
				break;
slouken@0
   699
		}
slouken@0
   700
		free(music);
slouken@0
   701
	}
slouken@0
   702
}
slouken@0
   703
slouken@177
   704
/* Find out the music format of a mixer music, or the currently playing
slouken@177
   705
   music, if 'music' is NULL.
slouken@177
   706
*/
slouken@177
   707
Mix_MusicType Mix_GetMusicType(const Mix_Music *music)
slouken@177
   708
{
slouken@177
   709
	Mix_MusicType type = MUS_NONE;
slouken@177
   710
slouken@177
   711
	if ( music ) {
slouken@177
   712
		type = music->type;
slouken@177
   713
	} else {
slouken@177
   714
		SDL_LockAudio();
slouken@177
   715
		if ( music_playing ) {
slouken@177
   716
			type = music_playing->type;
slouken@177
   717
		}
slouken@177
   718
		SDL_UnlockAudio();
slouken@177
   719
	}
slouken@177
   720
	return(type);
slouken@177
   721
}
slouken@177
   722
slouken@173
   723
/* Play a music chunk.  Returns 0, or -1 if there was an error.
slouken@173
   724
 */
slouken@173
   725
static int music_internal_play(Mix_Music *music, double position)
slouken@0
   726
{
slouken@173
   727
	int retval = 0;
megastep@10
   728
slouken@173
   729
	/* Note the music we're playing */
slouken@173
   730
	if ( music_playing ) {
slouken@173
   731
		music_internal_halt();
slouken@173
   732
	}
slouken@173
   733
	music_playing = music;
slouken@173
   734
slouken@173
   735
	/* Set the initial volume */
icculus@237
   736
	if ( music->type != MUS_MOD ) {
icculus@237
   737
		music_internal_initialize_volume();
slouken@173
   738
	}
slouken@173
   739
slouken@173
   740
	/* Set up for playback */
slouken@0
   741
	switch (music->type) {
slouken@0
   742
#ifdef CMD_MUSIC
slouken@173
   743
	    case MUS_CMD:
slouken@173
   744
		MusicCMD_Start(music->data.cmd);
slouken@173
   745
		break;
slouken@0
   746
#endif
slouken@0
   747
#ifdef WAV_MUSIC
slouken@173
   748
	    case MUS_WAV:
slouken@173
   749
		WAVStream_Start(music->data.wave);
slouken@173
   750
		break;
slouken@0
   751
#endif
slouken@249
   752
#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
slouken@173
   753
	    case MUS_MOD:
slouken@173
   754
		Player_Start(music->data.module);
icculus@237
   755
		/* Player_SetVolume() does nothing before Player_Start() */
icculus@237
   756
		music_internal_initialize_volume();
slouken@173
   757
		break;
slouken@0
   758
#endif
slouken@0
   759
#ifdef MID_MUSIC
slouken@173
   760
	    case MUS_MID:
slouken@98
   761
#ifdef USE_NATIVE_MIDI
slouken@173
   762
		if ( native_midi_ok ) {
slouken@173
   763
			native_midi_start(music->data.nativemidi);
slouken@173
   764
		} MIDI_ELSE
slouken@98
   765
#endif
slouken@106
   766
#ifdef USE_TIMIDITY_MIDI
slouken@173
   767
		if ( timidity_ok ) {
slouken@173
   768
			Timidity_Start(music->data.midi);
slouken@173
   769
		}
slouken@106
   770
#endif
slouken@173
   771
		break;
slouken@0
   772
#endif
slouken@63
   773
#ifdef OGG_MUSIC
slouken@173
   774
	    case MUS_OGG:
slouken@173
   775
		OGG_play(music->data.ogg);
slouken@173
   776
		break;
slouken@63
   777
#endif
slouken@0
   778
#ifdef MP3_MUSIC
slouken@173
   779
	    case MUS_MP3:
slouken@173
   780
		SMPEG_enableaudio(music->data.mp3,1);
slouken@173
   781
		SMPEG_enablevideo(music->data.mp3,0);
slouken@179
   782
		SMPEG_play(music_playing->data.mp3);
slouken@173
   783
		break;
slouken@0
   784
#endif
slouken@173
   785
	    default:
slouken@173
   786
		Mix_SetError("Can't play unknown music type");
slouken@173
   787
		retval = -1;
slouken@173
   788
		break;
slouken@0
   789
	}
slouken@173
   790
slouken@173
   791
	/* Set the playback position, note any errors if an offset is used */
slouken@173
   792
	if ( retval == 0 ) {
slouken@173
   793
		if ( position > 0.0 ) {
slouken@173
   794
			if ( music_internal_position(position) < 0 ) {
slouken@173
   795
				Mix_SetError("Position not implemented for music type");
slouken@173
   796
				retval = -1;
slouken@173
   797
			}
slouken@173
   798
		} else {
slouken@173
   799
			music_internal_position(0.0);
slouken@173
   800
		}
slouken@173
   801
	}
slouken@173
   802
slouken@173
   803
	/* If the setup failed, we're not playing any music anymore */
slouken@173
   804
	if ( retval < 0 ) {
slouken@173
   805
		music_playing = NULL;
slouken@173
   806
	}
slouken@173
   807
	return(retval);
slouken@173
   808
}
slouken@173
   809
int Mix_FadeInMusicPos(Mix_Music *music, int loops, int ms, double position)
slouken@173
   810
{
slouken@173
   811
	int retval;
slouken@173
   812
slouken@173
   813
	/* Don't play null pointers :-) */
slouken@173
   814
	if ( music == NULL ) {
slouken@173
   815
		Mix_SetError("music parameter was NULL");
slouken@173
   816
		return(-1);
slouken@173
   817
	}
slouken@173
   818
slouken@173
   819
	/* Setup the data */
slouken@173
   820
	if ( ms ) {
slouken@173
   821
		music->fading = MIX_FADING_IN;
slouken@173
   822
	} else {
slouken@173
   823
		music->fading = MIX_NO_FADING;
slouken@173
   824
	}
slouken@173
   825
	music->fade_step = 0;
slouken@173
   826
	music->fade_steps = ms/ms_per_step;
slouken@173
   827
slouken@173
   828
	/* Play the puppy */
slouken@173
   829
	SDL_LockAudio();
slouken@173
   830
	/* If the current music is fading out, wait for the fade to complete */
slouken@173
   831
	while ( music_playing && (music_playing->fading == MIX_FADING_OUT) ) {
slouken@173
   832
		SDL_UnlockAudio();
slouken@173
   833
		SDL_Delay(100);
slouken@173
   834
		SDL_LockAudio();
slouken@173
   835
	}
slouken@173
   836
	music_active = 1;
slouken@173
   837
	music_loops = loops;
slouken@173
   838
	retval = music_internal_play(music, position);
slouken@173
   839
	SDL_UnlockAudio();
slouken@173
   840
slouken@173
   841
	return(retval);
slouken@173
   842
}
slouken@173
   843
int Mix_FadeInMusic(Mix_Music *music, int loops, int ms)
slouken@173
   844
{
slouken@173
   845
	return Mix_FadeInMusicPos(music, loops, ms, 0.0);
slouken@173
   846
}
slouken@173
   847
int Mix_PlayMusic(Mix_Music *music, int loops)
slouken@173
   848
{
slouken@173
   849
	return Mix_FadeInMusicPos(music, loops, 0, 0.0);
megastep@10
   850
}
megastep@10
   851
slouken@173
   852
/* Set the playing music position */
slouken@173
   853
int music_internal_position(double position)
megastep@10
   854
{
slouken@173
   855
	int retval = 0;
slouken@173
   856
slouken@173
   857
	switch (music_playing->type) {
slouken@249
   858
#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
slouken@173
   859
	    case MUS_MOD:
slouken@173
   860
		Player_SetPosition((UWORD)position);
slouken@173
   861
		break;
slouken@173
   862
#endif
slouken@173
   863
#ifdef OGG_MUSIC
slouken@173
   864
	    case MUS_OGG:
slouken@173
   865
		OGG_jump_to_time(music_playing->data.ogg, position);
slouken@173
   866
		break;
slouken@173
   867
#endif
slouken@173
   868
#ifdef MP3_MUSIC
slouken@173
   869
	    case MUS_MP3:
slouken@176
   870
		if ( position > 0.0 ) {
slouken@173
   871
			SMPEG_skip(music_playing->data.mp3, position);
slouken@179
   872
		} else {
slouken@179
   873
			SMPEG_rewind(music_playing->data.mp3);
slouken@179
   874
			SMPEG_play(music_playing->data.mp3);
slouken@173
   875
		}
slouken@173
   876
		break;
slouken@173
   877
#endif
slouken@173
   878
	    default:
slouken@173
   879
		/* TODO: Implement this for other music backends */
slouken@173
   880
		retval = -1;
slouken@173
   881
		break;
megastep@10
   882
	}
slouken@173
   883
	return(retval);
megastep@4
   884
}
slouken@155
   885
int Mix_SetMusicPosition(double position)
slouken@154
   886
{
slouken@173
   887
	int retval;
slouken@173
   888
slouken@173
   889
	SDL_LockAudio();
slouken@173
   890
	if ( music_playing ) {
slouken@173
   891
		retval = music_internal_position(position);
slouken@173
   892
		if ( retval < 0 ) {
slouken@173
   893
			Mix_SetError("Position not implemented for music type");
slouken@154
   894
		}
slouken@173
   895
	} else {
slouken@173
   896
		Mix_SetError("Music isn't playing");
slouken@173
   897
		retval = -1;
slouken@154
   898
	}
slouken@173
   899
	SDL_UnlockAudio();
slouken@154
   900
slouken@173
   901
	return(retval);
slouken@154
   902
}
slouken@154
   903
icculus@237
   904
/* Set the music's initial volume */
icculus@237
   905
static void music_internal_initialize_volume(void)
icculus@237
   906
{
icculus@237
   907
	if ( music_playing->fading == MIX_FADING_IN ) {
icculus@237
   908
		music_internal_volume(0);
icculus@237
   909
	} else {
icculus@237
   910
		music_internal_volume(music_volume);
icculus@237
   911
	}
icculus@237
   912
}
icculus@237
   913
slouken@0
   914
/* Set the music volume */
slouken@173
   915
static void music_internal_volume(int volume)
slouken@173
   916
{
slouken@173
   917
	switch (music_playing->type) {
slouken@173
   918
#ifdef CMD_MUSIC
slouken@173
   919
	    case MUS_CMD:
slouken@173
   920
		MusicCMD_SetVolume(volume);
slouken@173
   921
		break;
slouken@173
   922
#endif
slouken@173
   923
#ifdef WAV_MUSIC
slouken@173
   924
	    case MUS_WAV:
slouken@173
   925
		WAVStream_SetVolume(volume);
slouken@173
   926
		break;
slouken@173
   927
#endif
slouken@249
   928
#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
slouken@173
   929
	    case MUS_MOD:
slouken@173
   930
		Player_SetVolume((SWORD)volume);
slouken@173
   931
		break;
slouken@173
   932
#endif
slouken@173
   933
#ifdef MID_MUSIC
slouken@173
   934
	    case MUS_MID:
slouken@173
   935
#ifdef USE_NATIVE_MIDI
slouken@173
   936
		if ( native_midi_ok ) {
slouken@173
   937
			native_midi_setvolume(volume);
slouken@173
   938
		} MIDI_ELSE
slouken@173
   939
#endif
slouken@173
   940
#ifdef USE_TIMIDITY_MIDI
slouken@173
   941
		if ( timidity_ok ) {
slouken@173
   942
			Timidity_SetVolume(volume);
slouken@173
   943
		}
slouken@173
   944
#endif
slouken@173
   945
		break;
slouken@173
   946
#endif
slouken@173
   947
#ifdef OGG_MUSIC
slouken@173
   948
	    case MUS_OGG:
slouken@173
   949
		OGG_setvolume(music_playing->data.ogg, volume);
slouken@173
   950
		break;
slouken@173
   951
#endif
slouken@173
   952
#ifdef MP3_MUSIC
slouken@173
   953
	    case MUS_MP3:
slouken@173
   954
		SMPEG_setvolume(music_playing->data.mp3,(int)(((float)volume/(float)MIX_MAX_VOLUME)*100.0));
slouken@173
   955
		break;
slouken@173
   956
#endif
slouken@173
   957
	    default:
slouken@173
   958
		/* Unknown music type?? */
slouken@173
   959
		break;
slouken@173
   960
	}
slouken@173
   961
}
slouken@0
   962
int Mix_VolumeMusic(int volume)
slouken@0
   963
{
slouken@0
   964
	int prev_volume;
slouken@0
   965
slouken@0
   966
	prev_volume = music_volume;
megastep@4
   967
	if ( volume < 0 ) {
slouken@163
   968
		return prev_volume;
megastep@4
   969
	}
megastep@4
   970
	if ( volume > SDL_MIX_MAXVOLUME ) {
megastep@4
   971
		volume = SDL_MIX_MAXVOLUME;
megastep@4
   972
	}
megastep@4
   973
	music_volume = volume;
slouken@173
   974
	SDL_LockAudio();
slouken@173
   975
	if ( music_playing ) {
slouken@173
   976
		music_internal_volume(music_volume);
slouken@0
   977
	}
slouken@173
   978
	SDL_UnlockAudio();
slouken@0
   979
	return(prev_volume);
slouken@0
   980
}
slouken@0
   981
slouken@173
   982
/* Halt playing of music */
slouken@173
   983
static void music_internal_halt(void)
megastep@7
   984
{
megastep@7
   985
	switch (music_playing->type) {
megastep@7
   986
#ifdef CMD_MUSIC
slouken@173
   987
	    case MUS_CMD:
megastep@7
   988
		MusicCMD_Stop(music_playing->data.cmd);
megastep@7
   989
		break;
megastep@7
   990
#endif
megastep@7
   991
#ifdef WAV_MUSIC
slouken@173
   992
	    case MUS_WAV:
megastep@7
   993
		WAVStream_Stop();
megastep@7
   994
		break;
megastep@7
   995
#endif
slouken@249
   996
#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
slouken@173
   997
	    case MUS_MOD:
megastep@7
   998
		Player_Stop();
megastep@7
   999
		break;
megastep@7
  1000
#endif
megastep@7
  1001
#ifdef MID_MUSIC
slouken@173
  1002
	    case MUS_MID:
slouken@98
  1003
#ifdef USE_NATIVE_MIDI
slouken@98
  1004
		if ( native_midi_ok ) {
slouken@98
  1005
			native_midi_stop();
slouken@106
  1006
		} MIDI_ELSE
slouken@98
  1007
#endif
slouken@106
  1008
#ifdef USE_TIMIDITY_MIDI
slouken@98
  1009
		if ( timidity_ok ) {
slouken@98
  1010
			Timidity_Stop();
slouken@98
  1011
		}
slouken@106
  1012
#endif
megastep@7
  1013
		break;
megastep@7
  1014
#endif
slouken@63
  1015
#ifdef OGG_MUSIC
slouken@173
  1016
	    case MUS_OGG:
slouken@63
  1017
		OGG_stop(music_playing->data.ogg);
slouken@63
  1018
		break;
slouken@63
  1019
#endif
megastep@7
  1020
#ifdef MP3_MUSIC
slouken@173
  1021
	    case MUS_MP3:
megastep@7
  1022
		SMPEG_stop(music_playing->data.mp3);
megastep@7
  1023
		break;
megastep@7
  1024
#endif
slouken@173
  1025
	    default:
megastep@7
  1026
		/* Unknown music type?? */
megastep@7
  1027
		return;
megastep@7
  1028
	}
megastep@7
  1029
	music_playing->fading = MIX_NO_FADING;
slouken@17
  1030
	music_playing = NULL;
megastep@7
  1031
}
slouken@0
  1032
int Mix_HaltMusic(void)
slouken@0
  1033
{
slouken@173
  1034
	SDL_LockAudio();
slouken@173
  1035
	if ( music_playing ) {
slouken@173
  1036
		music_internal_halt();
slouken@0
  1037
	}
slouken@173
  1038
	SDL_UnlockAudio();
slouken@173
  1039
slouken@0
  1040
	return(0);
slouken@0
  1041
}
slouken@0
  1042
megastep@4
  1043
/* Progressively stop the music */
megastep@4
  1044
int Mix_FadeOutMusic(int ms)
megastep@4
  1045
{
slouken@173
  1046
	int retval = 0;
slouken@173
  1047
icculus@280
  1048
	if (ms <= 0) {  /* just halt immediately. */
icculus@280
  1049
		Mix_HaltMusic();
icculus@280
  1050
		return 1;
icculus@280
  1051
	}
icculus@280
  1052
slouken@173
  1053
	SDL_LockAudio();
icculus@280
  1054
	if ( music_playing) {
icculus@280
  1055
                int fade_steps = (ms + ms_per_step - 1)/ms_per_step;
icculus@280
  1056
                if ( music_playing->fading == MIX_NO_FADING ) {
icculus@280
  1057
	        	music_playing->fade_step = 0;
icculus@280
  1058
                } else {
icculus@280
  1059
                        int step;
icculus@280
  1060
                        int old_fade_steps = music_playing->fade_steps;
icculus@280
  1061
                        if ( music_playing->fading == MIX_FADING_OUT ) {
icculus@280
  1062
                                step = music_playing->fade_step;
icculus@280
  1063
                        } else {
icculus@280
  1064
                                step = old_fade_steps
icculus@280
  1065
                                        - music_playing->fade_step + 1;
icculus@280
  1066
                        }
icculus@280
  1067
                        music_playing->fade_step = (step * fade_steps)
icculus@280
  1068
                                / old_fade_steps;
icculus@280
  1069
                }
slouken@173
  1070
		music_playing->fading = MIX_FADING_OUT;
icculus@280
  1071
		music_playing->fade_steps = fade_steps;
slouken@173
  1072
		retval = 1;
megastep@4
  1073
	}
slouken@173
  1074
	SDL_UnlockAudio();
slouken@173
  1075
slouken@173
  1076
	return(retval);
megastep@4
  1077
}
megastep@4
  1078
megastep@4
  1079
Mix_Fading Mix_FadingMusic(void)
megastep@4
  1080
{
slouken@173
  1081
	Mix_Fading fading = MIX_NO_FADING;
slouken@173
  1082
slouken@173
  1083
	SDL_LockAudio();
slouken@173
  1084
	if ( music_playing ) {
slouken@173
  1085
		fading = music_playing->fading;
slouken@173
  1086
	}
slouken@173
  1087
	SDL_UnlockAudio();
slouken@173
  1088
slouken@173
  1089
	return(fading);
megastep@4
  1090
}
megastep@4
  1091
slouken@0
  1092
/* Pause/Resume the music stream */
slouken@0
  1093
void Mix_PauseMusic(void)
slouken@0
  1094
{
slouken@173
  1095
	music_active = 0;
slouken@0
  1096
}
megastep@4
  1097
slouken@0
  1098
void Mix_ResumeMusic(void)
slouken@0
  1099
{
slouken@173
  1100
	music_active = 1;
slouken@0
  1101
}
slouken@0
  1102
slouken@0
  1103
void Mix_RewindMusic(void)
slouken@0
  1104
{
slouken@173
  1105
	Mix_SetMusicPosition(0.0);
slouken@0
  1106
}
slouken@0
  1107
megastep@13
  1108
int Mix_PausedMusic(void)
megastep@13
  1109
{
slouken@17
  1110
	return (music_active == 0);
megastep@13
  1111
}
megastep@13
  1112
slouken@0
  1113
/* Check the status of the music */
slouken@173
  1114
static int music_internal_playing()
slouken@173
  1115
{
slouken@173
  1116
	int playing = 1;
slouken@173
  1117
	switch (music_playing->type) {
slouken@173
  1118
#ifdef CMD_MUSIC
slouken@173
  1119
	    case MUS_CMD:
slouken@173
  1120
		if (!MusicCMD_Active(music_playing->data.cmd)) {
slouken@173
  1121
			playing = 0;
slouken@173
  1122
		}
slouken@173
  1123
		break;
slouken@173
  1124
#endif
slouken@173
  1125
#ifdef WAV_MUSIC
slouken@173
  1126
	    case MUS_WAV:
slouken@173
  1127
		if ( ! WAVStream_Active() ) {
slouken@173
  1128
			playing = 0;
slouken@173
  1129
		}
slouken@173
  1130
		break;
slouken@173
  1131
#endif
slouken@249
  1132
#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
slouken@173
  1133
	    case MUS_MOD:
slouken@173
  1134
		if ( ! Player_Active() ) {
slouken@173
  1135
			playing = 0;
slouken@173
  1136
		}
slouken@173
  1137
		break;
slouken@173
  1138
#endif
slouken@173
  1139
#ifdef MID_MUSIC
slouken@173
  1140
	    case MUS_MID:
slouken@173
  1141
#ifdef USE_NATIVE_MIDI
slouken@173
  1142
		if ( native_midi_ok ) {
slouken@173
  1143
			if ( ! native_midi_active() )
slouken@173
  1144
				playing = 0;
slouken@173
  1145
		} MIDI_ELSE
slouken@173
  1146
#endif
slouken@173
  1147
#ifdef USE_TIMIDITY_MIDI
slouken@173
  1148
		if ( timidity_ok ) {
slouken@173
  1149
			if ( ! Timidity_Active() )
slouken@173
  1150
				playing = 0;
slouken@173
  1151
		}
slouken@173
  1152
#endif
slouken@173
  1153
		break;
slouken@173
  1154
#endif
slouken@173
  1155
#ifdef OGG_MUSIC
slouken@173
  1156
	    case MUS_OGG:
slouken@173
  1157
		if ( ! OGG_playing(music_playing->data.ogg) ) {
slouken@173
  1158
			playing = 0;
slouken@173
  1159
		}
slouken@173
  1160
		break;
slouken@173
  1161
#endif
slouken@173
  1162
#ifdef MP3_MUSIC
slouken@173
  1163
	    case MUS_MP3:
slouken@173
  1164
		if ( SMPEG_status(music_playing->data.mp3) != SMPEG_PLAYING )
slouken@173
  1165
			playing = 0;
slouken@173
  1166
		break;
slouken@173
  1167
#endif
slouken@173
  1168
	    default:
slouken@173
  1169
		playing = 0;
slouken@173
  1170
		break;
slouken@173
  1171
	}
slouken@173
  1172
	return(playing);
slouken@173
  1173
}
megastep@13
  1174
int Mix_PlayingMusic(void)
slouken@0
  1175
{
slouken@173
  1176
	int playing = 0;
slouken@173
  1177
slouken@173
  1178
	SDL_LockAudio();
slouken@173
  1179
	if ( music_playing ) {
slouken@173
  1180
		playing = music_internal_playing();
slouken@0
  1181
	}
slouken@173
  1182
	SDL_UnlockAudio();
slouken@173
  1183
slouken@173
  1184
	return(playing);
slouken@0
  1185
}
slouken@0
  1186
slouken@0
  1187
/* Set the external music playback command */
slouken@0
  1188
int Mix_SetMusicCMD(const char *command)
slouken@0
  1189
{
slouken@0
  1190
	Mix_HaltMusic();
slouken@0
  1191
	if ( music_cmd ) {
slouken@0
  1192
		free(music_cmd);
slouken@0
  1193
		music_cmd = NULL;
slouken@0
  1194
	}
slouken@0
  1195
	if ( command ) {
slouken@0
  1196
		music_cmd = (char *)malloc(strlen(command)+1);
slouken@0
  1197
		if ( music_cmd == NULL ) {
slouken@0
  1198
			return(-1);
slouken@0
  1199
		}
slouken@0
  1200
		strcpy(music_cmd, command);
slouken@0
  1201
	}
slouken@0
  1202
	return(0);
slouken@0
  1203
}
slouken@0
  1204
slouken@249
  1205
#ifdef LIBMIKMOD_MUSIC
slouken@249
  1206
static int _pl_synchro_value;
slouken@249
  1207
void Player_SetSynchroValue(int i)
slouken@249
  1208
{
slouken@249
  1209
	fprintf(stderr,"SDL_mixer: Player_SetSynchroValue is not supported.\n");
slouken@249
  1210
	_pl_synchro_value = i;
slouken@249
  1211
}
slouken@249
  1212
slouken@249
  1213
int Player_GetSynchroValue(void)
slouken@249
  1214
{
slouken@249
  1215
	fprintf(stderr,"SDL_mixer: Player_GetSynchroValue is not supported.\n");
slouken@249
  1216
	return _pl_synchro_value;
slouken@249
  1217
}
slouken@249
  1218
#endif
slouken@249
  1219
slouken@154
  1220
int Mix_SetSynchroValue(int i)
slouken@154
  1221
{
slouken@154
  1222
	if ( music_playing && ! music_stopped ) {
slouken@154
  1223
		switch (music_playing->type) {
slouken@249
  1224
#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
slouken@173
  1225
		    case MUS_MOD:
slouken@173
  1226
			if ( ! Player_Active() ) {
slouken@173
  1227
				return(-1);
slouken@173
  1228
			}
slouken@173
  1229
			Player_SetSynchroValue(i);
slouken@173
  1230
			return 0;
slouken@173
  1231
			break;
slouken@154
  1232
#endif
slouken@173
  1233
		    default:
slouken@173
  1234
			return(-1);
slouken@173
  1235
			break;
slouken@154
  1236
		}
slouken@154
  1237
		return(-1);
slouken@154
  1238
	}
slouken@154
  1239
	return(-1);
slouken@154
  1240
}
slouken@154
  1241
slouken@154
  1242
int Mix_GetSynchroValue(void)
slouken@154
  1243
{
slouken@154
  1244
	if ( music_playing && ! music_stopped ) {
slouken@154
  1245
		switch (music_playing->type) {
slouken@249
  1246
#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
slouken@173
  1247
		    case MUS_MOD:
slouken@173
  1248
			if ( ! Player_Active() ) {
slouken@173
  1249
				return(-1);
slouken@173
  1250
			}
slouken@173
  1251
			return Player_GetSynchroValue();
slouken@173
  1252
			break;
slouken@154
  1253
#endif
slouken@173
  1254
		    default:
slouken@173
  1255
			return(-1);
slouken@173
  1256
			break;
slouken@154
  1257
		}
slouken@154
  1258
		return(-1);
slouken@154
  1259
	}
slouken@154
  1260
	return(-1);
slouken@154
  1261
}
slouken@154
  1262
slouken@154
  1263
slouken@0
  1264
/* Uninitialize the music players */
slouken@0
  1265
void close_music(void)
slouken@0
  1266
{
slouken@0
  1267
	Mix_HaltMusic();
slouken@0
  1268
#ifdef CMD_MUSIC
slouken@0
  1269
	Mix_SetMusicCMD(NULL);
slouken@0
  1270
#endif
slouken@249
  1271
#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
slouken@0
  1272
	MikMod_Exit();
slouken@249
  1273
# ifndef LIBMIKMOD_MUSIC
slouken@101
  1274
	MikMod_UnregisterAllLoaders();
slouken@101
  1275
	MikMod_UnregisterAllDrivers();
slouken@249
  1276
# endif
slouken@0
  1277
#endif
patmandin@264
  1278
#ifdef MID_MUSIC
patmandin@264
  1279
# ifdef USE_TIMIDITY_MIDI
patmandin@264
  1280
	Timidity_Close();
patmandin@264
  1281
# endif
patmandin@264
  1282
#endif
slouken@0
  1283
}
slouken@0
  1284
slouken@249
  1285
# ifdef LIBMIKMOD_MUSIC
slouken@249
  1286
typedef struct
slouken@249
  1287
{
slouken@249
  1288
	MREADER mr;
slouken@249
  1289
	int offset;
slouken@249
  1290
	int eof;
slouken@249
  1291
	SDL_RWops *rw;
slouken@249
  1292
} LMM_MREADER;
slouken@249
  1293
BOOL LMM_Seek(struct MREADER *mr,long to,int dir)
slouken@249
  1294
{
slouken@249
  1295
	int at;
slouken@249
  1296
	LMM_MREADER* lmmmr=(LMM_MREADER*)mr;
slouken@249
  1297
	if(dir==SEEK_SET)
slouken@249
  1298
		to+=lmmmr->offset;
slouken@249
  1299
	at=SDL_RWseek(lmmmr->rw, to, dir);
slouken@249
  1300
	return at<lmmmr->offset;
slouken@249
  1301
}
slouken@249
  1302
long LMM_Tell(struct MREADER *mr)
slouken@249
  1303
{
slouken@249
  1304
	int at;
slouken@249
  1305
	LMM_MREADER* lmmmr=(LMM_MREADER*)mr;
slouken@249
  1306
	at=SDL_RWtell(lmmmr->rw)-lmmmr->offset;
slouken@249
  1307
	return at;
slouken@249
  1308
}
slouken@249
  1309
BOOL LMM_Read(struct MREADER *mr,void *buf,size_t sz)
slouken@249
  1310
{
slouken@249
  1311
	int got;
slouken@249
  1312
	LMM_MREADER* lmmmr=(LMM_MREADER*)mr;
slouken@249
  1313
	got=SDL_RWread(lmmmr->rw, buf, sz, 1);
slouken@249
  1314
	return got;
slouken@249
  1315
}
slouken@249
  1316
int LMM_Get(struct MREADER *mr)
slouken@249
  1317
{
slouken@249
  1318
	unsigned char c;
slouken@249
  1319
	int i=EOF;
slouken@249
  1320
	LMM_MREADER* lmmmr=(LMM_MREADER*)mr;
slouken@249
  1321
	if(SDL_RWread(lmmmr->rw,&c,1,1))
slouken@249
  1322
		i=c;
slouken@249
  1323
	return i;
slouken@249
  1324
}
slouken@249
  1325
BOOL LMM_Eof(struct MREADER *mr)
slouken@249
  1326
{
slouken@249
  1327
	int offset;
slouken@249
  1328
	LMM_MREADER* lmmmr=(LMM_MREADER*)mr;
slouken@249
  1329
	offset=LMM_Tell(mr);
slouken@249
  1330
	return offset>=lmmmr->eof;
slouken@249
  1331
}
slouken@249
  1332
MODULE *MikMod_LoadSongRW(SDL_RWops *rw, int maxchan)
slouken@249
  1333
{
slouken@249
  1334
	LMM_MREADER lmmmr={
slouken@249
  1335
		LMM_Seek,
slouken@249
  1336
		LMM_Tell,
slouken@249
  1337
		LMM_Read,
slouken@249
  1338
		LMM_Get,
slouken@249
  1339
		LMM_Eof,
slouken@249
  1340
		0,
slouken@249
  1341
		0,
slouken@249
  1342
		rw
slouken@249
  1343
	};
slouken@249
  1344
	MODULE *m;
slouken@249
  1345
	lmmmr.offset=SDL_RWtell(rw);
slouken@249
  1346
	SDL_RWseek(rw,0,SEEK_END);
slouken@249
  1347
	lmmmr.eof=SDL_RWtell(rw);
slouken@249
  1348
	SDL_RWseek(rw,lmmmr.offset,SEEK_SET);
slouken@249
  1349
	m=Player_LoadGeneric((MREADER*)&lmmmr,maxchan,0);
slouken@249
  1350
	return m;
slouken@249
  1351
}
slouken@249
  1352
# endif
slouken@249
  1353
slouken@226
  1354
Mix_Music *Mix_LoadMUS_RW(SDL_RWops *rw) {
slouken@246
  1355
	Uint8 magic[5];	  /*Apparently there is no way to check if the file is really a MOD,*/
slouken@246
  1356
	/*		    or there are too many formats supported by MikMod or MikMod does */
slouken@246
  1357
	/*		    this check by itself. If someone implements other formats (e.g. MP3) */
slouken@246
  1358
	/*		    the check can be uncommented */
slouken@226
  1359
	Mix_Music *music;
slouken@246
  1360
	int start;
slouken@226
  1361
slouken@226
  1362
	/* Figure out what kind of file this is */
slouken@246
  1363
	start = SDL_RWtell(rw);
slouken@246
  1364
	if (SDL_RWread(rw,magic,1,4)!=4) {
slouken@226
  1365
		Mix_SetError("Couldn't read from RWops");
slouken@226
  1366
		return NULL;
slouken@226
  1367
	}
slouken@246
  1368
	SDL_RWseek(rw, start, SEEK_SET);
slouken@246
  1369
	magic[4]='\0';
slouken@226
  1370
slouken@226
  1371
	/* Allocate memory for the music structure */
slouken@226
  1372
	music=(Mix_Music *)malloc(sizeof(Mix_Music));
slouken@226
  1373
	if (music==NULL ) {
slouken@226
  1374
		Mix_SetError("Out of memory");
slouken@226
  1375
		return(NULL);
slouken@226
  1376
	}
slouken@226
  1377
	music->error = 0;
slouken@226
  1378
slouken@246
  1379
#ifdef OGG_MUSIC
slouken@246
  1380
	/* Ogg Vorbis files have the magic four bytes "OggS" */
slouken@246
  1381
	if ( strcmp((char *)magic, "OggS") == 0 ) {
slouken@246
  1382
		music->type = MUS_OGG;
slouken@246
  1383
		music->data.ogg = OGG_new_RW(rw);
slouken@246
  1384
		if ( music->data.ogg == NULL ) {
slouken@246
  1385
			music->error = 1;
slouken@246
  1386
		}
slouken@246
  1387
	} else
slouken@246
  1388
#endif
slouken@256
  1389
#ifdef MP3_MUSIC
slouken@256
  1390
	if ( magic[0] == 0xFF && (magic[1] & 0xF0) == 0xF0 ) {
slouken@256
  1391
		SMPEG_Info info;
slouken@256
  1392
		music->type = MUS_MP3;
slouken@256
  1393
		music->data.mp3 = SMPEG_new_rwops(rw, &info, 0);
slouken@256
  1394
		if ( !info.has_audio ) {
slouken@256
  1395
			Mix_SetError("MPEG file does not have any audio stream.");
slouken@256
  1396
			music->error = 1;
slouken@256
  1397
		} else {
slouken@256
  1398
			SMPEG_actualSpec(music->data.mp3, &used_mixer);
slouken@256
  1399
		}
slouken@256
  1400
	} else
slouken@256
  1401
#endif
patmandin@265
  1402
#ifdef MID_MUSIC
patmandin@265
  1403
	/* MIDI files have the magic four bytes "MThd" */
patmandin@265
  1404
	if ( strcmp((char *)magic, "MThd") == 0 ) {
patmandin@265
  1405
		music->type = MUS_MID;
patmandin@269
  1406
		music->error = 1;
patmandin@269
  1407
#ifdef USE_NATIVE_MIDI
patmandin@269
  1408
		if ( native_midi_ok ) {
patmandin@269
  1409
			music->data.nativemidi = native_midi_loadsong_RW(rw);
patmandin@269
  1410
			if ( music->data.nativemidi ) {
patmandin@269
  1411
				music->error = 0;
patmandin@269
  1412
			}
patmandin@269
  1413
		} MIDI_ELSE
patmandin@269
  1414
#endif
patmandin@265
  1415
#ifdef USE_TIMIDITY_MIDI
patmandin@269
  1416
		if ( timidity_ok ) {
patmandin@269
  1417
			music->data.midi = Timidity_LoadSong_RW(rw);
patmandin@269
  1418
			if ( music->data.midi ) {
patmandin@269
  1419
				music->error = 0;
patmandin@269
  1420
			}
patmandin@265
  1421
		}
patmandin@265
  1422
#endif
patmandin@265
  1423
	} else
patmandin@265
  1424
#endif
slouken@249
  1425
#if defined(MOD_MUSIC) || defined(LIBMIKMOD_MUSIC)
slouken@226
  1426
	if (1) {
slouken@226
  1427
		music->type=MUS_MOD;
slouken@226
  1428
		music->data.module=MikMod_LoadSongRW(rw,64);
slouken@226
  1429
		if (music->data.module==NULL) {
slouken@226
  1430
			Mix_SetError("%s",MikMod_strerror(MikMod_errno));
slouken@226
  1431
			music->error=1;
icculus@279
  1432
		} else {
icculus@279
  1433
			/* Stop implicit looping, fade out and other flags. */
icculus@279
  1434
			music->data.module->extspd  = 1;
icculus@279
  1435
			music->data.module->panflag = 1;
icculus@279
  1436
			music->data.module->wrap    = 0;
icculus@279
  1437
			music->data.module->loop    = 0;
icculus@279
  1438
#if 0 /* Don't set fade out by default - unfortunately there's no real way
icculus@279
  1439
         to query the status of the song or set trigger actions.  Hum. */
icculus@279
  1440
			music->data.module->fadeout = 1;
icculus@279
  1441
#endif
slouken@226
  1442
		}
slouken@226
  1443
	} else
slouken@226
  1444
#endif
slouken@226
  1445
	{
slouken@226
  1446
		Mix_SetError("Unrecognized music format");
slouken@226
  1447
		music->error=1;
slouken@226
  1448
	}
slouken@226
  1449
	if (music->error) {
slouken@226
  1450
		free(music);
slouken@226
  1451
		music=NULL;
slouken@226
  1452
	}
slouken@226
  1453
	return(music);
slouken@226
  1454
}