+/*
+Copyright (C) 1996-1997 Id Software, Inc.
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program 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 General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+*/
+
+#ifndef SND_MAIN_H
+#define SND_MAIN_H
+
+#include "sound.h"
+
+
+typedef struct
+{
+ size_t length;
+ size_t offset;
+ qbyte data[4]; // variable sized
+} sfxbuffer_t;
+
+typedef struct
+{
+ unsigned int speed;
+ unsigned int width;
+ unsigned int channels;
+} snd_format_t;
+
+// sfx_t flags
+#define SFXFLAG_NONE 0
+#define SFXFLAG_FILEMISSING (1 << 0) // wasn't able to load the associated sound file
+#define SFXFLAG_SERVERSOUND (1 << 1) // the sfx is part of the server precache list
+#define SFXFLAG_STREAMED (1 << 2) // informative only. You shouldn't need to know that
+
+typedef struct snd_fetcher_s snd_fetcher_t;
+struct sfx_s
+{
+ char name[MAX_QPATH];
+ sfx_t *next;
+ mempool_t *mempool;
+ unsigned int locks; // A locked sfx_t must not be freed.
+ // Locks are added by S_PrecacheSound and S_ServerSounds.
+ // SFX can be freed by S_UnlockSfx or S_ServerSounds.
+ unsigned int flags; // cf SFXFLAG_* defines
+ snd_format_t format;
+ int loopstart;
+ size_t total_length;
+ const snd_fetcher_t *fetcher;
+ void *fetcher_data; // Per-sfx data for the sound fetching functions
+};
+
+typedef struct
+{
+ snd_format_t format;
+ int samples; // mono samples in buffer
+ int samplepos; // in mono samples
+ unsigned char *buffer;
+ int bufferlength; // used only by certain drivers
+} dma_t;
+
+typedef struct
+{
+ sfx_t *sfx; // sfx number
+ unsigned int flags; // cf CHANNELFLAG_* defines
+ int master_vol; // 0-255 master volume
+ int leftvol; // 0-255 volume
+ int rightvol; // 0-255 volume
+ int end; // end time in global paintsamples
+ int lastptime; // last time this channel was painted
+ int pos; // sample position in sfx
+ int entnum; // to allow overriding a specific sound
+ int entchannel;
+ vec3_t origin; // origin of sound effect
+ vec_t dist_mult; // distance multiplier (attenuation/clipK)
+ void *fetcher_data; // Per-channel data for the sound fetching function
+} channel_t;
+
+typedef const sfxbuffer_t* (*snd_fetcher_getsb_t) (channel_t* ch, unsigned int start, unsigned int nbsamples);
+typedef void (*snd_fetcher_end_t) (channel_t* ch);
+struct snd_fetcher_s
+{
+ snd_fetcher_getsb_t getsb;
+ snd_fetcher_end_t end;
+};
+
+void S_PaintChannels(int endtime);
+
+// initializes cycling through a DMA buffer and returns information on it
+qboolean SNDDMA_Init(void);
+
+// gets the current DMA position
+int SNDDMA_GetDMAPos(void);
+
+void SNDDMA_Submit(void);
+
+// shutdown the DMA xfer.
+void SNDDMA_Shutdown(void);
+
+qboolean S_LoadSound (sfx_t *s, qboolean complain);
+void S_UnloadSound(sfx_t *s);
+
+void *S_LockBuffer(void);
+void S_UnlockBuffer(void);
+
+extern size_t ResampleSfx (const qbyte *in_data, size_t in_length, const snd_format_t* in_format, qbyte *out_data, const char* sfxname);
+
+// ====================================================================
+// User-setable variables
+// ====================================================================
+
+// 0 to NUM_AMBIENTS - 1 = water, etc
+// NUM_AMBIENTS to NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS - 1 = normal entity sounds
+// NUM_AMBIENTS + MAX_DYNAMIC_CHANNELS to total_channels = static sounds
+#define MAX_CHANNELS 516
+#define MAX_DYNAMIC_CHANNELS 128
+
+extern channel_t channels[MAX_CHANNELS];
+
+extern unsigned int total_channels;
+
+extern int paintedtime;
+extern int soundtime;
+extern volatile dma_t *shm;
+
+extern cvar_t snd_swapstereo;
+extern cvar_t snd_streaming;
+
+extern int snd_blocked;
+
+
+#endif