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  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. #define DEFAULT_SOUND_PACKET_VOLUME 255
  26. #define DEFAULT_SOUND_PACKET_ATTENUATION 1.0
  27.  
  28. // !!! if this is changed, it much be changed in asm_i386.h too !!!
  29. typedef struct
  30. {
  31.         int left;
  32.         int right;
  33. } portable_samplepair_t;
  34.  
  35. typedef struct sfx_s
  36. {
  37.         char    name[MAX_QPATH];
  38.         cache_user_t    cache;
  39. } sfx_t;
  40.  
  41. // !!! if this is changed, it much be changed in asm_i386.h too !!!
  42. typedef struct
  43. {
  44.         int     length;
  45.         int     loopstart;
  46.         int     speed;
  47.         int     width;
  48.         int     stereo;
  49.         byte    data[1];                // variable sized
  50. } sfxcache_t;
  51.  
  52. typedef struct
  53. {
  54.         qboolean                gamealive;
  55.         qboolean                soundalive;
  56.         qboolean                splitbuffer;
  57.         int                             channels;
  58.         int                             samples;                                // mono samples in buffer
  59.         int                             submission_chunk;               // don't mix less than this #
  60.         int                             samplepos;                              // in mono samples
  61.         int                             samplebits;
  62.         int                             speed;
  63.         unsigned char   *buffer;
  64. } dma_t;
  65.  
  66. // !!! if this is changed, it much be changed in asm_i386.h too !!!
  67. typedef struct
  68. {
  69.         sfx_t   *sfx;                   // sfx number
  70.         int             leftvol;                // 0-255 volume
  71.         int             rightvol;               // 0-255 volume
  72.         int             end;                    // end time in global paintsamples
  73.         int     pos;                    // sample position in sfx
  74.         int             looping;                // where to loop, -1 = no looping
  75.         int             entnum;                 // to allow overriding a specific sound
  76.         int             entchannel;             //
  77.         vec3_t  origin;                 // origin of sound effect
  78.         vec_t   dist_mult;              // distance multiplier (attenuation/clipK)
  79.         int             master_vol;             // 0-255 master volume
  80. } channel_t;
  81.  
  82. typedef struct
  83. {
  84.         int             rate;
  85.         int             width;
  86.         int             channels;
  87.         int             loopstart;
  88.         int             samples;
  89.         int             dataofs;                // chunk starts this many bytes from file start
  90. } wavinfo_t;
  91.  
  92. void S_Init (void);
  93. void S_Startup (void);
  94. void S_Shutdown (void);
  95. void S_StartSound (int entnum, int entchannel, sfx_t *sfx, vec3_t origin, float fvol,  float attenuation);
  96. void S_StaticSound (sfx_t *sfx, vec3_t origin, float vol, float attenuation);
  97. void S_StopSound (int entnum, int entchannel);
  98. void S_StopAllSounds(qboolean clear);
  99. void S_ClearBuffer (void);
  100. void S_Update (vec3_t origin, vec3_t v_forward, vec3_t v_right, vec3_t v_up);
  101. void S_ExtraUpdate (void);
  102.  
  103. sfx_t *S_PrecacheSound (char *sample);
  104. void S_TouchSound (char *sample);
  105. void S_ClearPrecache (void);
  106. void S_BeginPrecaching (void);
  107. void S_EndPrecaching (void);
  108. void S_PaintChannels(int endtime);
  109. void S_InitPaintChannels (void);
  110.  
  111. // picks a channel based on priorities, empty slots, number of channels
  112. channel_t *SND_PickChannel(int entnum, int entchannel);
  113.  
  114. // spatializes a channel
  115. void SND_Spatialize(channel_t *ch);
  116.  
  117. // initializes cycling through a DMA buffer and returns information on it
  118. qboolean SNDDMA_Init(void);
  119.  
  120. // gets the current DMA position
  121. int SNDDMA_GetDMAPos(void);
  122.  
  123. // shutdown the DMA xfer.
  124. void SNDDMA_Shutdown(void);
  125.  
  126. // ====================================================================
  127. // User-setable variables
  128. // ====================================================================
  129.  
  130. #define MAX_CHANNELS                    128
  131. #define MAX_DYNAMIC_CHANNELS    8
  132.  
  133.  
  134. extern  channel_t   channels[MAX_CHANNELS];
  135. // 0 to MAX_DYNAMIC_CHANNELS-1  = normal entity sounds
  136. // MAX_DYNAMIC_CHANNELS to MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS -1 = water, etc
  137. // MAX_DYNAMIC_CHANNELS + NUM_AMBIENTS to total_channels = static sounds
  138.  
  139. extern  int                     total_channels;
  140.  
  141. //
  142. // Fake dma is a synchronous faking of the DMA progress used for
  143. // isolating performance in the renderer.  The fakedma_updates is
  144. // number of times S_Update() is called per second.
  145. //
  146.  
  147. extern qboolean                 fakedma;
  148. extern int                      fakedma_updates;
  149. extern int              paintedtime;
  150. extern vec3_t listener_origin;
  151. extern vec3_t listener_forward;
  152. extern vec3_t listener_right;
  153. extern vec3_t listener_up;
  154. extern volatile dma_t *shm;
  155. extern volatile dma_t sn;
  156. extern vec_t sound_nominal_clip_dist;
  157.  
  158. extern  cvar_t loadas8bit;
  159. extern  cvar_t bgmvolume;
  160. extern  cvar_t volume;
  161.  
  162. extern qboolean snd_initialized;
  163.  
  164. extern int              snd_blocked;
  165.  
  166. void S_LocalSound (char *s);
  167. sfxcache_t *S_LoadSound (sfx_t *s);
  168.  
  169. wavinfo_t GetWavinfo (char *name, byte *wav, int wavlength);
  170.  
  171. void SND_InitScaletable (void);
  172. void SNDDMA_Submit(void);
  173.  
  174. void S_AmbientOff (void);
  175. void S_AmbientOn (void);
  176.  
  177. #endif
  178.