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https://github.com/id-Software/DOOM-IOS2.git
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103 lines
2.6 KiB
C
Executable File
103 lines
2.6 KiB
C
Executable File
/*
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Copyright (C) 2011 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; 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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#ifndef doomengine_SDL_Mixer_h
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#define doomengine_SDL_Mixer_h
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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===============================
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This is a minimal implemenation of SDL_Mixer for iOS, just to get MIDI files
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playing so that we can play the music directly from the WADs.
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===============================
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*/
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#include <stdint.h>
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typedef struct Mix_Music_tag {
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char unused;
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} Mix_Music;
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/* Open the mixer with a certain audio format */
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extern int Mix_OpenAudio(int frequency, uint16_t format, int channels,
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int chunksize);
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/* Close the mixer, halting all playing audio */
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extern void Mix_CloseAudio(void);
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/* Set a function that is called after all mixing is performed.
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This can be used to provide real-time visual display of the audio stream
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or add a custom mixer filter for the stream data.
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*/
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extern void Mix_SetPostMix(void (*mix_func)
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(void *udata, uint8_t *stream, int len), void *arg);
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/* Fade in music or a channel over "ms" milliseconds, same semantics as the "Play" functions */
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extern int Mix_FadeInMusic(Mix_Music *music, int loops, int ms);
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/* Pause/Resume the music stream */
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extern void Mix_PauseMusic(void);
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extern void Mix_ResumeMusic(void);
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/* Halt a channel, fading it out progressively till it's silent
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The ms parameter indicates the number of milliseconds the fading
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will take.
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*/
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extern int Mix_FadeOutMusic(int ms);
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/* Free an audio chunk previously loaded */
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extern void Mix_FreeMusic(Mix_Music *music);
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/* Load a wave file or a music (.mod .s3m .it .xm) file */
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extern Mix_Music * Mix_LoadMUS(const char *file);
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extern const char * Mix_GetError(void);
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/* Set the volume in the range of 0-128 of a specific channel or chunk.
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If the specified channel is -1, set volume for all channels.
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Returns the original volume.
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If the specified volume is -1, just return the current volume.
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*/
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extern int Mix_VolumeMusic(int volume);
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#ifdef __cplusplus
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}
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#endif
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#endif
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