Added SDL_sound lib
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pelya
340
project/jni/sdl_sound/decoders/modplug.c
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340
project/jni/sdl_sound/decoders/modplug.c
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/*
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* SDL_sound -- An abstract sound format decoding API.
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* Copyright (C) 2001 Ryan C. Gordon.
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*
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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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/*
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* Module player for SDL_sound. This driver handles anything that ModPlug does.
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*
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* ModPlug can be found at http://sourceforge.net/projects/modplug-xmms
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*
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* An unofficial version of modplug with all C++ dependencies removed is also
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* available: http://freecraft.net/snapshots/
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* (Look for something like "libmodplug-johns-*.tar.gz")
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*
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* Please see the file COPYING in the source's root directory.
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*
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* This file written by Torbjörn Andersson (d91tan@Update.UU.SE)
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*/
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#if HAVE_CONFIG_H
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# include <config.h>
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#endif
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#ifdef SOUND_SUPPORTS_MODPLUG
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "SDL_sound.h"
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#define __SDL_SOUND_INTERNAL__
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#include "SDL_sound_internal.h"
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#if SOUND_MODPLUG_IN_OWN_PATH
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#include "libmodplug/modplug.h"
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#else
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#include "modplug.h"
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#endif
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static int MODPLUG_init(void);
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static void MODPLUG_quit(void);
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static int MODPLUG_open(Sound_Sample *sample, const char *ext);
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static void MODPLUG_close(Sound_Sample *sample);
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static Uint32 MODPLUG_read(Sound_Sample *sample);
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static int MODPLUG_rewind(Sound_Sample *sample);
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static int MODPLUG_seek(Sound_Sample *sample, Uint32 ms);
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static const char *extensions_modplug[] =
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{
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/* The XMMS plugin is apparently able to load compressed modules as
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* well, but libmodplug does not handle this.
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*/
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"669", /* Composer 669 / UNIS 669 module */
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"AMF", /* ASYLUM Music Format / Advanced Music Format(DSM) */
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"AMS", /* AMS module */
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"DBM", /* DigiBooster Pro Module */
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"DMF", /* DMF DELUSION DIGITAL MUSIC FILEFORMAT (X-Tracker) */
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"DSM", /* DSIK Internal Format module */
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"FAR", /* Farandole module */
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"IT", /* Impulse Tracker IT file */
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"MDL", /* DigiTracker module */
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#if 0
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"J2B", /* Not implemented? What is it anyway? */
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#endif
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"MED", /* OctaMed MED file */
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"MOD", /* ProTracker / NoiseTracker MOD/NST file */
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"MT2", /* MadTracker 2.0 */
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"MTM", /* MTM file */
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"OKT", /* Oktalyzer module */
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"PTM", /* PTM PolyTracker module */
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"PSM", /* PSM module */
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"S3M", /* ScreamTracker file */
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"STM", /* ST 2.xx */
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"ULT",
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"UMX",
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"XM", /* FastTracker II */
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NULL
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};
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const Sound_DecoderFunctions __Sound_DecoderFunctions_MODPLUG =
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{
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{
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extensions_modplug,
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"Play modules through ModPlug",
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"Torbjörn Andersson <d91tan@Update.UU.SE>",
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"http://modplug-xmms.sourceforge.net/"
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},
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MODPLUG_init, /* init() method */
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MODPLUG_quit, /* quit() method */
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MODPLUG_open, /* open() method */
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MODPLUG_close, /* close() method */
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MODPLUG_read, /* read() method */
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MODPLUG_rewind, /* rewind() method */
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MODPLUG_seek /* seek() method */
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};
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static ModPlug_Settings settings;
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static Sound_AudioInfo current_audioinfo;
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static unsigned int total_mods_decoding = 0;
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static SDL_mutex *modplug_mutex = NULL;
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static int MODPLUG_init(void)
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{
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assert(modplug_mutex == NULL);
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/*
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* The settings will require some experimenting. I've borrowed some
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* of them from the XMMS ModPlug plugin.
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*/
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settings.mFlags = MODPLUG_ENABLE_OVERSAMPLING;
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#ifndef _WIN32_WCE
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settings.mFlags |= MODPLUG_ENABLE_NOISE_REDUCTION |
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MODPLUG_ENABLE_REVERB |
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MODPLUG_ENABLE_MEGABASS |
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MODPLUG_ENABLE_SURROUND;
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settings.mReverbDepth = 30;
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settings.mReverbDelay = 100;
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settings.mBassAmount = 40;
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settings.mBassRange = 30;
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settings.mSurroundDepth = 20;
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settings.mSurroundDelay = 20;
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#endif
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settings.mChannels = 2;
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settings.mBits = 16;
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settings.mFrequency = 44100;
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settings.mResamplingMode = MODPLUG_RESAMPLE_FIR;
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settings.mLoopCount = 0;
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current_audioinfo.channels = 2;
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current_audioinfo.rate = 44100;
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current_audioinfo.format = AUDIO_S16SYS;
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total_mods_decoding = 0;
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modplug_mutex = SDL_CreateMutex();
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ModPlug_SetSettings(&settings);
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return(1); /* success. */
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} /* MODPLUG_init */
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static void MODPLUG_quit(void)
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{
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assert(total_mods_decoding == 0);
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if (modplug_mutex != NULL)
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{
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SDL_DestroyMutex(modplug_mutex);
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modplug_mutex = NULL;
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} /* if */
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} /* MODPLUG_quit */
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/*
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* Most MOD files I've seen have tended to be a few hundred KB, even if some
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* of them were much smaller than that.
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*/
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#define CHUNK_SIZE 65536
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static int MODPLUG_open(Sound_Sample *sample, const char *ext)
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{
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Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
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ModPlugFile *module;
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Uint8 *data;
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size_t size;
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Uint32 retval;
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int has_extension = 0;
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int i;
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/*
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* Apparently ModPlug's loaders are too forgiving. They gladly accept
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* streams that they shouldn't. For now, rely on file extension instead.
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*/
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for (i = 0; extensions_modplug[i] != NULL; i++)
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{
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if (__Sound_strcasecmp(ext, extensions_modplug[i]) == 0)
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{
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has_extension = 1;
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break;
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} /* if */
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} /* for */
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if (!has_extension)
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{
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SNDDBG(("MODPLUG: Unrecognized file type: %s\n", ext));
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BAIL_MACRO("MODPLUG: Not a module file.", 0);
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} /* if */
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/*
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* ModPlug needs the entire stream in one big chunk. I don't like it,
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* but I don't think there's any way around it.
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*/
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data = (Uint8 *) malloc(CHUNK_SIZE);
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BAIL_IF_MACRO(data == NULL, ERR_OUT_OF_MEMORY, 0);
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size = 0;
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do
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{
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retval = SDL_RWread(internal->rw, &data[size], 1, CHUNK_SIZE);
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size += retval;
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if (retval == CHUNK_SIZE)
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{
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data = (Uint8 *) realloc(data, size + CHUNK_SIZE);
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BAIL_IF_MACRO(data == NULL, ERR_OUT_OF_MEMORY, 0);
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} /* if */
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} while (retval > 0);
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/*
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* It's only safe to change these settings when there're
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* no other mods being decoded...
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*/
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if (modplug_mutex != NULL)
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SDL_LockMutex(modplug_mutex);
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if (total_mods_decoding > 0)
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{
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/* other mods decoding: use the same settings they are. */
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memcpy(&sample->actual, ¤t_audioinfo, sizeof (Sound_AudioInfo));
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} /* if */
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else
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{
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/* no other mods decoding: define the new ModPlug output settings. */
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memcpy(&sample->actual, &sample->desired, sizeof (Sound_AudioInfo));
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if (sample->actual.rate == 0)
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sample->actual.rate = 44100;
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if (sample->actual.channels == 0)
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sample->actual.channels = 2;
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if (sample->actual.format == 0)
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sample->actual.format = AUDIO_S16SYS;
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memcpy(¤t_audioinfo, &sample->actual, sizeof (Sound_AudioInfo));
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settings.mChannels=sample->actual.channels;
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settings.mFrequency=sample->actual.rate;
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settings.mBits = sample->actual.format & 0xFF;
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ModPlug_SetSettings(&settings);
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} /* else */
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/*
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* The buffer may be a bit too large, but that doesn't matter. I think
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* it's safe to free it as soon as ModPlug_Load() is finished anyway.
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*/
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module = ModPlug_Load((void *) data, size);
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free(data);
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if (module == NULL)
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{
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if (modplug_mutex != NULL)
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SDL_UnlockMutex(modplug_mutex);
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BAIL_MACRO("MODPLUG: Not a module file.", 0);
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} /* if */
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total_mods_decoding++;
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if (modplug_mutex != NULL)
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SDL_UnlockMutex(modplug_mutex);
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SNDDBG(("MODPLUG: [%d ms] %s\n",
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ModPlug_GetLength(module), ModPlug_GetName(module)));
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internal->decoder_private = (void *) module;
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sample->flags = SOUND_SAMPLEFLAG_CANSEEK;
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SNDDBG(("MODPLUG: Accepting data stream\n"));
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return(1); /* we'll handle this data. */
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} /* MODPLUG_open */
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static void MODPLUG_close(Sound_Sample *sample)
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{
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Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
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ModPlugFile *module = (ModPlugFile *) internal->decoder_private;
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if (modplug_mutex != NULL)
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SDL_LockMutex(modplug_mutex);
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total_mods_decoding--;
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if (modplug_mutex != NULL)
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SDL_UnlockMutex(modplug_mutex);
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ModPlug_Unload(module);
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} /* MODPLUG_close */
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static Uint32 MODPLUG_read(Sound_Sample *sample)
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{
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Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
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ModPlugFile *module = (ModPlugFile *) internal->decoder_private;
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int retval;
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retval = ModPlug_Read(module, internal->buffer, internal->buffer_size);
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if (retval == 0)
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sample->flags |= SOUND_SAMPLEFLAG_EOF;
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return(retval);
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} /* MODPLUG_read */
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static int MODPLUG_rewind(Sound_Sample *sample)
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{
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Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
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ModPlugFile *module = (ModPlugFile *) internal->decoder_private;
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ModPlug_Seek(module, 0);
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return(1);
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} /* MODPLUG_rewind */
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static int MODPLUG_seek(Sound_Sample *sample, Uint32 ms)
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{
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Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque;
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ModPlugFile *module = (ModPlugFile *) internal->decoder_private;
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/* Assume that this will work. */
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ModPlug_Seek(module, ms);
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return(1);
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} /* MODPLUG_seek */
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#endif /* SOUND_SUPPORTS_MODPLUG */
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/* end of modplug.c ... */
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