#include "sound.h"
#include "misc.h"
-#ifdef MSDOS
-extern void sound_handler(struct SoundControl);
-#endif
-
/*** THE STUFF BELOW IS ONLY USED BY THE SOUND SERVER CHILD PROCESS ***/
-#ifndef MSDOS
+static int playing_sounds = 0;
static struct SoundControl playlist[MAX_SOUNDS_PLAYING];
static struct SoundControl emptySoundControl =
{
-1,0,0, FALSE,FALSE,FALSE,FALSE,FALSE, 0,0L,0L,NULL
};
+
+#ifndef MSDOS
static int stereo_volume[PSND_MAX_LEFT2RIGHT+1];
static char premix_first_buffer[SND_BLOCKSIZE];
#ifdef VOXWARE
static char premix_left_buffer[SND_BLOCKSIZE];
static char premix_right_buffer[SND_BLOCKSIZE];
static int premix_last_buffer[SND_BLOCKSIZE];
-#endif
+#endif /* VOXWARE */
static unsigned char playing_buffer[SND_BLOCKSIZE];
-static int playing_sounds = 0;
-#else
-struct SoundControl playlist[MAX_SOUNDS_PLAYING];
-struct SoundControl emptySoundControl;
-int playing_sounds;
+#endif /* MSDOS */
+
+/* forward declaration of internal functions */
+#ifdef VOXWARE
+static void SoundServer_InsertNewSound(struct SoundControl);
+#endif
+#ifndef VOXWARE
+static unsigned char linear_to_ulaw(int);
+static int ulaw_to_linear(unsigned char);
+#endif
+#ifdef HPUX_AUDIO
+static void HPUX_Audio_Control();
+#endif
+#ifdef MSDOS
+static void SoundServer_InsertNewSound(struct SoundControl);
+static void SoundServer_StopSound(int);
+static void SoundServer_StopAllSounds();
#endif
void SoundServer()
FD_ZERO(&sound_fdset);
FD_SET(sound_pipe[0], &sound_fdset);
- for(;;) /* wait for calls from PlaySound(), StopSound(), ... */
+ while(1) /* wait for sound playing commands from client */
{
FD_SET(sound_pipe[0], &sound_fdset);
select(sound_pipe[0]+1, &sound_fdset, NULL, NULL, NULL);
struct timeval delay = { 0, 0 };
byte *sample_ptr;
long sample_size;
- long max_sample_size; /* MIGHT BE USED UNINITIALIZED! TO BE FIXED! */
- long fragment_size;
+ static long max_sample_size = 0;
+ static long fragment_size = 0;
boolean stereo;
if (playing_sounds || (sound_device=open(sound_device_name,O_WRONLY))>=0)
#endif /* !VOXWARE */
}
-#endif
+#endif /* !MSDOS */
}
-void SoundServer_InsertNewSound(struct SoundControl snd_ctrl)
+#ifdef MSDOS
+static void sound_handler(struct SoundControl snd_ctrl)
{
- int i,k;
+ int i;
+
+ if (snd_ctrl.fade_sound)
+ {
+ if (!playing_sounds)
+ return;
- /* wenn voll, ältesten Sound 'rauswerfen */
+ for (i=0; i<MAX_SOUNDS_PLAYING; i++)
+ if ((snd_ctrl.stop_all_sounds || playlist[i].nr == snd_ctrl.nr) &&
+ !playlist[i].fade_sound)
+ {
+ playlist[i].fade_sound = TRUE;
+ if (voice_check(playlist[i].voice))
+ voice_ramp_volume(playlist[i].voice, 1000, 0);
+ playlist[i].loop = PSND_NO_LOOP;
+ }
+ }
+ else if (snd_ctrl.stop_all_sounds)
+ {
+ if (!playing_sounds)
+ return;
+ SoundServer_StopAllSounds();
+ }
+ else if (snd_ctrl.stop_sound)
+ {
+ if (!playing_sounds)
+ return;
+ SoundServer_StopSound(snd_ctrl.nr);
+ }
+
+ for (i=0; i<MAX_SOUNDS_PLAYING; i++)
+ {
+ if (!playlist[i].active || playlist[i].loop)
+ continue;
+
+ playlist[i].playingpos = voice_get_position(playlist[i].voice);
+ playlist[i].volume = voice_get_volume(playlist[i].voice);
+ if (playlist[i].playingpos == -1 || !playlist[i].volume)
+ {
+ deallocate_voice(playlist[i].voice);
+ playlist[i] = emptySoundControl;
+ playing_sounds--;
+ }
+ }
+
+ if (snd_ctrl.active)
+ SoundServer_InsertNewSound(snd_ctrl);
+}
+#endif /* MSDOS */
+
+static void SoundServer_InsertNewSound(struct SoundControl snd_ctrl)
+{
+ int i, k;
+
+ /* if playlist is full, remove oldest sound */
if (playing_sounds==MAX_SOUNDS_PLAYING)
{
int longest=0, longest_nr=0;
playing_sounds--;
}
- /* nachsehen, ob (und ggf. wie oft) Sound bereits gespielt wird */
+ /* check if sound is already being played (and how often) */
for(k=0,i=0;i<MAX_SOUNDS_PLAYING;i++)
{
if (playlist[i].nr == snd_ctrl.nr)
k++;
}
- /* falls Sound-Loop: nur neu beginnen, wenn Sound gerade ausklingt */
+ /* restart loop sounds only if they are just fading out */
if (k>=1 && snd_ctrl.loop)
{
for(i=0;i<MAX_SOUNDS_PLAYING;i++)
return;
}
- /* keinen Sound mehr als n mal gleichzeitig spielen (momentan n==2) */
+ /* don't play sound more than n times simultaneously (with n == 2 for now) */
if (k>=2)
{
int longest=0, longest_nr=0;
- /* den bereits am längsten gespielten (gleichen) Sound suchen */
+ /* look for oldest equal sound */
for(i=0;i<MAX_SOUNDS_PLAYING;i++)
{
int actual;
}
*/
-void SoundServer_StopSound(int nr)
+static void SoundServer_StopSound(int nr)
{
int i;
#endif
}
-void SoundServer_StopAllSounds()
+static void SoundServer_StopAllSounds()
{
int i;
}
#ifdef HPUX_AUDIO
-void HPUX_Audio_Control()
+static void HPUX_Audio_Control()
{
struct audio_describe ainfo;
int audio_ctl;
#define BIAS 0x84 /* define the add-in bias for 16 bit samples */
#define CLIP 32635
-unsigned char linear_to_ulaw(int sample)
+static unsigned char linear_to_ulaw(int sample)
{
static int exp_lut[256] =
{
** Output: signed 16 bit linear sample
*/
-int ulaw_to_linear(unsigned char ulawbyte)
+static int ulaw_to_linear(unsigned char ulawbyte)
{
static int exp_lut[8] = { 0, 132, 396, 924, 1980, 4092, 8316, 16764 };
int sign, exponent, mantissa, sample;
boolean LoadSound(struct SoundInfo *snd_info)
{
- FILE *file;
char filename[256];
char *sound_ext = "wav";
#ifndef MSDOS
struct SoundHeader_WAV *sound_header;
+ FILE *file;
int i;
#endif
options.base_directory, SOUNDS_DIRECTORY, snd_info->name, sound_ext);
#ifndef MSDOS
+
if ((file = fopen(filename, "r")) == NULL)
{
Error(ERR_WARN, "cannot open sound file '%s' - no sounds", filename);
if (!snd_info->sample_ptr)
{
Error(ERR_WARN, "cannot read sound file '%s' - no sounds", filename);
- fclose(file);
return(FALSE);
}
+
#endif /* MSDOS */
return(TRUE);
boolean LoadSound_8SVX(struct SoundInfo *snd_info)
{
- FILE *file;
char filename[256];
#ifndef MSDOS
struct SoundHeader_8SVX *sound_header;
+ FILE *file;
char *ptr;
char *sound_ext = "8svx";
#else
if(!snd_info->sample_ptr)
{
Error(ERR_WARN, "cannot read sound file '%s' - no sounds", filename);
- fclose(file);
return(FALSE);
}
return(TRUE);
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