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1.1 root 1: /*
2: Copyright (C) 1996-1997 Id Software, Inc.
3:
4: This program is free software; you can redistribute it and/or
5: modify it under the terms of the GNU General Public License
6: as published by the Free Software Foundation; either version 2
7: of the License, or (at your option) any later version.
8:
9: This program is distributed in the hope that it will be useful,
10: but WITHOUT ANY WARRANTY; without even the implied warranty of
11: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12:
13: See the GNU General Public License for more details.
14:
15: You should have received a copy of the GNU General Public License
16: along with this program; if not, write to the Free Software
17: Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18:
19: */
20: // sound.h -- client sound i/o functions
21:
22: #ifndef __SOUND__
23: #define __SOUND__
24:
25: // !!! if this is changed, it much be changed in asm_i386.h too !!!
26: typedef struct
27: {
28: int left;
29: int right;
30: } portable_samplepair_t;
31:
32: typedef struct sfx_s
33: {
34: char name[MAX_QPATH];
35: cache_user_t cache;
36: } sfx_t;
37:
38: // !!! if this is changed, it much be changed in asm_i386.h too !!!
39: typedef struct
40: {
41: int length;
42: int loopstart;
43: int speed;
44: int width;
45: int stereo;
46: byte data[1]; // variable sized
47: } sfxcache_t;
48:
49: typedef struct
50: {
51: qboolean gamealive;
52: qboolean soundalive;
53: qboolean splitbuffer;
54: int channels;
55: int samples; // mono samples in buffer
56: int submission_chunk; // don't mix less than this #
57: int samplepos; // in mono samples
58: int samplebits;
59: int speed;
60: unsigned char *buffer;
61: } dma_t;
62:
63: // !!! if this is changed, it much be changed in asm_i386.h too !!!
64: typedef struct
65: {
66: sfx_t *sfx; // sfx number
67: int leftvol; // 0-255 volume
68: int rightvol; // 0-255 volume
69: int end; // end time in global paintsamples
70: int pos; // sample position in sfx
71: int looping; // where to loop, -1 = no looping
72: int entnum; // to allow overriding a specific sound
73: int entchannel; //
74: vec3_t origin; // origin of sound effect
75: vec_t dist_mult; // distance multiplier (attenuation/clipK)
76: int master_vol; // 0-255 master volume
77: } channel_t;
78:
79: typedef struct
80: {
81: int rate;
82: int width;
83: int channels;
84: int loopstart;
85: int samples;
86: int dataofs; // chunk starts this many bytes from file start
87: } wavinfo_t;
88:
89: void S_Init (void);
90: void S_Startup (void);
91: void S_Shutdown (void);
92: void S_StartSound (int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol, float attenuation);
93: void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation);
94: void S_StopSound (int entnum, int entchannel);
95: void S_StopAllSounds(qboolean clear);
96: void S_ClearBuffer (void);
97: void S_Update (vec3_t origin, vec3_t v_forward, vec3_t v_right, vec3_t v_up);
98: void S_ExtraUpdate (void);
99:
100: sfx_t *S_PrecacheSound (char *sample);
101: void S_TouchSound (char *sample);
102: void S_ClearPrecache (void);
103: void S_BeginPrecaching (void);
104: void S_EndPrecaching (void);
105: void S_PaintChannels(int endtime);
106: void S_InitPaintChannels (void);
107:
108: // picks a channel based on priorities, empty slots, number of channels
109: channel_t *SND_PickChannel(int entnum, int entchannel);
110:
111: // spatializes a channel
112: void SND_Spatialize(channel_t *ch);
113:
114: // initializes cycling through a DMA buffer and returns information on it
115: qboolean SNDDMA_Init(void);
116:
117: // gets the current DMA position
118: int SNDDMA_GetDMAPos(void);
119:
120: // shutdown the DMA xfer.
121: void SNDDMA_Shutdown(void);
122:
123: // ====================================================================
124: // User-setable variables
125: // ====================================================================
126:
127: #define MAX_CHANNELS 128
128: #define MAX_DYNAMIC_CHANNELS 8
129:
130:
131: extern channel_t channels[MAX_CHANNELS];
132: // 0 to MAX_DYNAMIC_CHANNELS-1 = normal entity sounds
133: // MAX_DYNAMIC_CHANNELS to MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS -1 = water, etc
134: // MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS to total_channels = static sounds
135:
136: extern int total_channels;
137:
138: //
139: // Fake dma is a synchronous faking of the DMA progress used for
140: // isolating performance in the renderer. The fakedma_updates is
141: // number of times S_Update() is called per second.
142: //
143:
144: extern qboolean fakedma;
145: extern int fakedma_updates;
146: extern int paintedtime;
147: extern vec3_t listener_origin;
148: extern vec3_t listener_forward;
149: extern vec3_t listener_right;
150: extern vec3_t listener_up;
151: extern volatile dma_t *shm;
152: extern volatile dma_t sn;
153: extern vec_t sound_nominal_clip_dist;
154:
155: extern cvar_t loadas8bit;
156: extern cvar_t bgmvolume;
157: extern cvar_t volume;
158:
159: extern qboolean snd_initialized;
160:
161: extern int snd_blocked;
162:
163: void S_LocalSound (char *s);
164: sfxcache_t *S_LoadSound (sfx_t *s);
165:
166: wavinfo_t GetWavinfo (char *name, byte *wav, int wavlength);
167:
168: void SND_InitScaletable (void);
169: void SNDDMA_Submit(void);
170:
171: void S_AmbientOff (void);
172: void S_AmbientOn (void);
173:
174: #endif
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