# HG changeset patch # User Ryan C. Gordon # Date 1010625357 0 # Node ID 0254ff448a631d6ac4db030d55e1b37a28592667 # Parent 2cae459bc47ee708d35374061bfeb4fef559141e Moved to mikmod.c, to make distinction between ModPlug and MikMod decoders. diff -r 2cae459bc47e -r 0254ff448a63 decoders/mod.c --- a/decoders/mod.c Thu Jan 10 01:15:11 2002 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,275 +0,0 @@ -/* - * SDL_sound -- An abstract sound format decoding API. - * Copyright (C) 2001 Ryan C. Gordon. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ - -/* - * Module player - through MikMod - for SDL_sound. - * - * This driver handles anything our subset of MikMod handles. It is based on - * SDL_mixer's MikMod music player. - * - * Please see the file COPYING in the source's root directory. - * - * This file written by Torbjörn Andersson (d91tan@Update.UU.SE) - */ - -#if HAVE_CONFIG_H -# include -#endif - -#ifdef SOUND_SUPPORTS_MOD - -#include -#include -#include -#include - -#include "SDL_sound.h" - -#define __SDL_SOUND_INTERNAL__ -#include "SDL_sound_internal.h" - -#include "mikmod.h" - - -static int MOD_init(void); -static void MOD_quit(void); -static int MOD_open(Sound_Sample *sample, const char *ext); -static void MOD_close(Sound_Sample *sample); -static Uint32 MOD_read(Sound_Sample *sample); - -static const char *extensions_mikmod[] = -{ - "MOD", "IT", "XM", "S3M", "MTM", "669", "STM", "ULT", - "FAR", "MED", "AMF", "DSM", "IMF", "GDM", "STX", "OKT", - NULL -}; - -const Sound_DecoderFunctions __Sound_DecoderFunctions_MOD = -{ - { - extensions_mikmod, - "Play modules through MikMod", - "Torbjörn Andersson ", - "http://www.mikmod.org/" - }, - - MOD_init, /* init() method */ - MOD_quit, /* quit() method */ - MOD_open, /* open() method */ - MOD_close, /* close() method */ - MOD_read /* read() method */ -}; - - /* this is what we store in our internal->decoder_private field... */ -typedef struct { - MODULE *module; -} mod_t; - - -/* Make MikMod read from a RWops... */ - -typedef struct MRWOPSREADER { - MREADER core; - Sound_Sample *sample; - int end; -} MRWOPSREADER; - -static BOOL _mm_RWopsReader_eof(MREADER *reader) -{ - MRWOPSREADER *rwops_reader = (MRWOPSREADER *) reader; - Sound_Sample *sample = rwops_reader->sample; - Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; - int pos = SDL_RWtell(internal->rw); - - if (rwops_reader->end == pos) - return(1); - - return(0); -} /* _mm_RWopsReader_eof */ - - -static BOOL _mm_RWopsReader_read(MREADER *reader, void *ptr, size_t size) -{ - MRWOPSREADER *rwops_reader = (MRWOPSREADER *) reader; - Sound_Sample *sample = rwops_reader->sample; - Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; - return(SDL_RWread(internal->rw, ptr, size, 1)); -} /* _mm_RWopsReader_Read */ - - -static int _mm_RWopsReader_get(MREADER *reader) -{ - char buf; - MRWOPSREADER *rwops_reader = (MRWOPSREADER *) reader; - Sound_Sample *sample = rwops_reader->sample; - Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; - - if (SDL_RWread(internal->rw, &buf, 1, 1) != 1) - return(EOF); - - return((int) buf); -} /* _mm_RWopsReader_get */ - - -static BOOL _mm_RWopsReader_seek(MREADER *reader, long offset, int whence) -{ - MRWOPSREADER *rwops_reader = (MRWOPSREADER *) reader; - Sound_Sample *sample = rwops_reader->sample; - Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; - - return(SDL_RWseek(internal->rw, offset, whence)); -} /* _mm_RWopsReader_seek */ - - -static long _mm_RWopsReader_tell(MREADER *reader) -{ - MRWOPSREADER *rwops_reader = (MRWOPSREADER *) reader; - Sound_Sample *sample = rwops_reader->sample; - Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; - - return(SDL_RWtell(internal->rw)); -} /* _mm_RWopsReader_tell */ - - -static MREADER *_mm_new_rwops_reader(Sound_Sample *sample) -{ - Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; - - MRWOPSREADER *reader = (MRWOPSREADER *) malloc(sizeof (MRWOPSREADER)); - if (reader != NULL) - { - int here; - reader->core.Eof = _mm_RWopsReader_eof; - reader->core.Read = _mm_RWopsReader_read; - reader->core.Get = _mm_RWopsReader_get; - reader->core.Seek = _mm_RWopsReader_seek; - reader->core.Tell = _mm_RWopsReader_tell; - reader->sample = sample; - - /* RWops does not explicitly support an eof check, so we shall find - the end manually - this requires seek support for the RWop */ - here = SDL_RWtell(internal->rw); - reader->end = SDL_RWseek(internal->rw, 0, SEEK_END); - SDL_RWseek(internal->rw, here, SEEK_SET); /* Move back */ - /* !!! FIXME: What happens if the seek fails? */ - } /* if */ - - return((MREADER *) reader); -} /* _mm_new_rwops_reader */ - - -static void _mm_delete_rwops_reader(MREADER *reader) -{ - /* SDL_sound will delete the RWops and sample at a higher level... */ - if (reader != NULL) - free(reader); -} /* _mm_delete_rwops_reader */ - - - -static int MOD_init(void) -{ - MikMod_RegisterDriver(&drv_nos); - MikMod_RegisterAllLoaders(); - - /* - * Both DMODE_SOFT_MUSIC and DMODE_16BITS should be set by default, - * so this is just for clarity. I haven't experimented with any of - * the other flags. There are a few which are said to give better - * sound quality. - */ - md_mode |= (DMODE_SOFT_MUSIC | DMODE_16BITS); - md_mixfreq = 0; - - BAIL_IF_MACRO(MikMod_Init(""), MikMod_strerror(MikMod_errno), 0); - - return(1); /* success. */ -} /* MOD_init */ - - -static void MOD_quit(void) -{ - MikMod_Exit(); - md_mixfreq = 0; -} /* MOD_quit */ - - -static int MOD_open(Sound_Sample *sample, const char *ext) -{ - Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; - MREADER *reader; - mod_t *m; - - m = (mod_t *) malloc(sizeof(mod_t)); - BAIL_IF_MACRO(m == NULL, ERR_OUT_OF_MEMORY, 0); - reader = _mm_new_rwops_reader(sample); - BAIL_IF_MACRO(reader == NULL, ERR_OUT_OF_MEMORY, 0); - m->module = Player_LoadGeneric(reader, 64, 0); - _mm_delete_rwops_reader(reader); - BAIL_IF_MACRO(m->module == NULL, "MOD: Not a module file.", 0); - - if (md_mixfreq == 0) - md_mixfreq = (!sample->desired.rate) ? 44100 : sample->desired.rate; - - sample->actual.channels = 2; - sample->actual.rate = md_mixfreq; - sample->actual.format = AUDIO_S16SYS; - internal->decoder_private = (void *) m; - - Player_Start(m->module); - Player_SetPosition(0); - - /* !!! FIXME: A little late to be giving this information... */ - sample->flags = SOUND_SAMPLEFLAG_NEEDSEEK; - - SNDDBG(("MOD: Accepting data stream\n")); - return(1); /* we'll handle this data. */ -} /* MOD_open */ - - -static void MOD_close(Sound_Sample *sample) -{ - Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; - mod_t *m = (mod_t *) internal->decoder_private; - - Player_Free(m->module); - free(m); -} /* MOD_close */ - - -static Uint32 MOD_read(Sound_Sample *sample) -{ - Sound_SampleInternal *internal = (Sound_SampleInternal *) sample->opaque; - mod_t *m = (mod_t *) internal->decoder_private; - - /* Switch to the current module, stopping any previous one. */ - Player_Start(m->module); - if (!Player_Active()) - { - sample->flags |= SOUND_SAMPLEFLAG_EOF; - return(0); - } /* if */ - return((Uint32) VC_WriteBytes(internal->buffer, internal->buffer_size)); -} /* MOD_read */ - -#endif /* SOUND_SUPPORTS_MOD */ - - -/* end of mod.c ... */ -