#endif
-/*** THE STUFF BELOW IS ONLY USED BY THE SOUND SERVER CHILD PROCESS ***/
+/* ========================================================================= */
+/* THE STUFF BELOW IS ONLY USED BY THE SOUND SERVER CHILD PROCESS */
static int playing_sounds = 0;
static struct SoundControl playlist[MAX_SOUNDS_PLAYING];
static int ulaw_to_linear(unsigned char);
#endif
-#if defined(PLATFORM_HPUX)
-static void HPUX_Audio_Control();
-#endif
-
-#if defined(PLATFORM_MSDOS)
+#if defined(AUDIO_LINUX_IOCTL)
+static boolean InitAudioDevice_Linux();
+#elif defined(PLATFORM_NETBSD)
+static boolean InitAudioDevice_NetBSD();
+#elif defined(PLATFORM_HPUX)
+static boolean InitAudioDevice_HPUX();
+#elif defined(PLATFORM_MSDOS)
static void SoundServer_InsertNewSound(struct SoundControl);
static void SoundServer_StopSound(int);
static void SoundServer_StopAllSounds();
if (audio_fd < 0)
{
- Error(ERR_WARN, "cannot open audio device - no sound");
+ Error(ERR_WARN, "cannot open audio device -- no sound");
return FALSE;
}
{
if (pipe(audio.soundserver_pipe) < 0)
{
- Error(ERR_WARN, "cannot create pipe - no sounds");
+ Error(ERR_WARN, "cannot create pipe -- no sounds");
return FALSE;
}
if ((audio.soundserver_pid = fork()) < 0)
{
- Error(ERR_WARN, "cannot create sound server process - no sounds");
+ Error(ERR_WARN, "cannot create sound server process -- no sounds");
return FALSE;
}
(int)sqrt((float)(PSND_MAX_LEFT2RIGHT*PSND_MAX_LEFT2RIGHT-i*i));
#if defined(PLATFORM_HPUX)
- HPUX_Audio_Control();
+ InitAudioDevice_HPUX();
#endif
FD_ZERO(&sound_fdset);
continue;
if (read(audio.soundserver_pipe[0], &snd_ctrl, sizeof(snd_ctrl))
!= sizeof(snd_ctrl))
- Error(ERR_EXIT_SOUND_SERVER, "broken pipe - no sounds");
+ Error(ERR_EXIT_SOUND_SERVER, "broken pipe -- no sounds");
#if defined(AUDIO_STREAMING_DSP)
static long max_sample_size = 0;
static long fragment_size = DEFAULT_AUDIO_FRAGMENT_SIZE;
int sample_rate = DEFAULT_AUDIO_SAMPLE_RATE;
- int stereo = TRUE;
- /* 'ioctl()' expects pointer to integer value for stereo flag
- (boolean is defined as 'char', which will not work here) */
+ boolean stereo = TRUE;
if (playing_sounds ||
(audio.device_fd = OpenAudioDevice(audio.device_name)) >= 0)
{
if (!playing_sounds) /* we just opened the audio device */
{
- unsigned long fragment_spec = 0;
-
- /* determine logarithm (log2) of the fragment size */
- for (fragment_spec=0; (1 << fragment_spec) < fragment_size;
- fragment_spec++);
-
- /* use two fragments (play one fragment, prepare the other);
- one fragment would result in interrupted audio output, more
- than two fragments would raise audio output latency to much */
- fragment_spec |= 0x00020000;
-
- /* Example for fragment specification:
- - 2 buffers / 512 bytes (giving 1/16 second resolution for 8 kHz)
- - (with stereo the effective buffer size will shrink to 256)
- => fragment_size = 0x00020009 */
-
- if (ioctl(audio.device_fd,SNDCTL_DSP_SETFRAGMENT,&fragment_spec) < 0)
- Error(ERR_EXIT_SOUND_SERVER,
- "cannot set fragment size of /dev/dsp - no sounds");
-
- /* try if we can use stereo sound */
- if (ioctl(audio.device_fd, SNDCTL_DSP_STEREO, &stereo) < 0)
- {
-#ifdef DEBUG
- static boolean reported = FALSE;
-
- if (!reported)
- {
- Error(ERR_RETURN, "cannot get stereo sound on /dev/dsp");
- reported = TRUE;
- }
+#if defined(AUDIO_LINUX_IOCTL)
+ stereo = InitAudioDevice_Linux(fragment_size, sample_rate);
+#elif defined(PLATFORM_NETBSD)
+ stereo = InitAudioDevice_NetBSD(fragment_size, sample_rate);
#endif
- stereo = FALSE;
- }
-
- if (ioctl(audio.device_fd, SNDCTL_DSP_SPEED, &sample_rate) < 0)
- Error(ERR_EXIT_SOUND_SERVER,
- "cannot set sample rate of /dev/dsp - no sounds");
-
- /* get the real fragmentation size; this should return 512 */
- if (ioctl(audio.device_fd, SNDCTL_DSP_GETBLKSIZE,&fragment_size) < 0)
- Error(ERR_EXIT_SOUND_SERVER,
- "cannot get fragment size of /dev/dsp - no sounds");
-
max_sample_size = fragment_size / (stereo ? 2 : 1);
}
/* fill the first mixing buffer with original sample */
memcpy(premix_first_buffer,sample_ptr,sample_size);
-
/* adjust volume of actual sound sample */
if (snd_ctrl.volume != PSND_MAX_VOLUME)
for(i=0;i<sample_size;i++)
#endif /* PLATFORM_MSDOS */
#endif /* !PLATFORM_WIN32 */
+
+/* ------------------------------------------------------------------------- */
+/* platform dependant audio initialization code */
+/* ------------------------------------------------------------------------- */
+
+#if defined(AUDIO_LINUX_IOCTL)
+static boolean InitAudioDevice_Linux(long fragment_size, int sample_rate)
+{
+ /* "ioctl()" expects pointer to 'int' value for stereo flag
+ (boolean is defined as 'char', which will not work here) */
+ int stereo = TRUE;
+ unsigned long fragment_spec = 0;
+
+ /* determine logarithm (log2) of the fragment size */
+ for (fragment_spec=0; (1 << fragment_spec) < fragment_size;
+ fragment_spec++);
+
+ /* use two fragments (play one fragment, prepare the other);
+ one fragment would result in interrupted audio output, more
+ than two fragments would raise audio output latency to much */
+ fragment_spec |= 0x00020000;
+
+ /* Example for fragment specification:
+ - 2 buffers / 512 bytes (giving 1/16 second resolution for 8 kHz)
+ - (with stereo the effective buffer size will shrink to 256)
+ => fragment_size = 0x00020009 */
+
+ if (ioctl(audio.device_fd, SNDCTL_DSP_SETFRAGMENT, &fragment_spec) < 0)
+ Error(ERR_EXIT_SOUND_SERVER,
+ "cannot set fragment size of /dev/dsp -- no sounds");
+
+ /* try if we can use stereo sound */
+ if (ioctl(audio.device_fd, SNDCTL_DSP_STEREO, &stereo) < 0)
+ {
+#ifdef DEBUG
+ static boolean reported = FALSE;
+
+ if (!reported)
+ {
+ Error(ERR_RETURN, "cannot get stereo sound on /dev/dsp");
+ reported = TRUE;
+ }
+#endif
+ stereo = FALSE;
+ }
+
+ if (ioctl(audio.device_fd, SNDCTL_DSP_SPEED, &sample_rate) < 0)
+ Error(ERR_EXIT_SOUND_SERVER,
+ "cannot set sample rate of /dev/dsp -- no sounds");
+
+ /* get the real fragmentation size; this should return 512 */
+ if (ioctl(audio.device_fd, SNDCTL_DSP_GETBLKSIZE, &fragment_size) < 0)
+ Error(ERR_EXIT_SOUND_SERVER,
+ "cannot get fragment size of /dev/dsp -- no sounds");
+
+ return (boolean)stereo;
+}
+#endif /* AUDIO_LINUX_IOCTL */
+
+#if defined(PLATFORM_NETBSD)
+static boolean InitAudioDevice_NetBSD(long fragment_size, int sample_rate)
+{
+ audio_info_t a_info;
+ boolean stereo = TRUE;
+
+ AUDIO_INITINFO(&a_info);
+ a_info.play.encoding = AUDIO_ENCODING_LINEAR8;
+ a_info.play.precision = 8;
+ a_info.play.channels = 2;
+ a_info.play.sample_rate = sample_rate;
+ a_info.blocksize = fragment_size;
+
+ if (ioctl(audio.device_fd, AUDIO_SETINFO, &a_info) < 0)
+ {
+ /* try to disable stereo */
+ a_info.play.channels = 1;
+ stereo = FALSE;
+
+ if (ioctl(audio.device_fd, AUDIO_SETINFO, &a_info) < 0)
+ Error(ERR_EXIT_SOUND_SERVER,
+ "cannot set sample rate of /dev/audio -- no sounds");
+ }
+
+ return stereo;
+}
+#endif /* PLATFORM_NETBSD */
+
#if defined(PLATFORM_HPUX)
-static void HPUX_Audio_Control()
+static boolean InitAudioDevice_HPUX()
{
struct audio_describe ainfo;
int audio_ctl;
audio_ctl = open("/dev/audioCtl", O_WRONLY | O_NDELAY);
if (audio_ctl == -1)
- Error(ERR_EXIT_SOUND_SERVER, "cannot open /dev/audioCtl - no sounds");
+ Error(ERR_EXIT_SOUND_SERVER, "cannot open /dev/audioCtl -- no sounds");
if (ioctl(audio_ctl, AUDIO_DESCRIBE, &ainfo) == -1)
- Error(ERR_EXIT_SOUND_SERVER, "no audio info - no sounds");
+ Error(ERR_EXIT_SOUND_SERVER, "no audio info -- no sounds");
if (ioctl(audio_ctl, AUDIO_SET_DATA_FORMAT, AUDIO_FORMAT_ULAW) == -1)
- Error(ERR_EXIT_SOUND_SERVER, "ulaw audio not available - no sounds");
+ Error(ERR_EXIT_SOUND_SERVER, "ulaw audio not available -- no sounds");
ioctl(audio_ctl, AUDIO_SET_CHANNELS, 1);
ioctl(audio_ctl, AUDIO_SET_SAMPLE_RATE, 8000);
close(audio_ctl);
+
+ return TRUE; /* to provide common interface for InitAudioDevice_...() */
}
#endif /* PLATFORM_HPUX */
}
#endif /* PLATFORM_UNIX && !AUDIO_STREAMING_DSP */
-/*** THE STUFF ABOVE IS ONLY USED BY THE SOUND SERVER CHILD PROCESS ***/
-/*===========================================================================*/
+/* THE STUFF ABOVE IS ONLY USED BY THE SOUND SERVER CHILD PROCESS */
+/* ========================================================================= */
+/* THE STUFF BELOW IS ONLY USED BY THE MAIN PROCESS */
-/*** THE STUFF BELOW IS ONLY USED BY THE MAIN PROCESS ***/
#define CHUNK_ID_LEN 4 /* IFF style chunk id length */
#define WAV_HEADER_SIZE 20 /* size of WAV file header */
if ((snd_info->mix_chunk = Mix_LoadWAV(filename)) == NULL)
{
- Error(ERR_WARN, "cannot read sound file '%s' - no sounds", filename);
+ Error(ERR_WARN, "cannot read sound file '%s' -- no sounds", filename);
return FALSE;
}
if ((file = fopen(filename, MODE_READ)) == NULL)
{
- Error(ERR_WARN, "cannot open sound file '%s' - no sounds", filename);
+ Error(ERR_WARN, "cannot open sound file '%s' -- no sounds", filename);
return FALSE;
}
if (fread(snd_info->data_ptr, 1, snd_info->data_len, file) !=
snd_info->data_len)
{
- Error(ERR_WARN, "cannot read sound file '%s' - no sounds", filename);
+ Error(ERR_WARN, "cannot read sound file '%s' -- no sounds", filename);
fclose(file);
return FALSE;
}
snd_info->sample_ptr = load_sample(filename);
if (!snd_info->sample_ptr)
{
- Error(ERR_WARN, "cannot read sound file '%s' - no sounds", filename);
+ Error(ERR_WARN, "cannot read sound file '%s' -- no sounds", filename);
return FALSE;
}
if ((mod_info->mix_music = Mix_LoadMUS(filename)) == NULL)
{
- Error(ERR_WARN, "cannot read music file '%s' - no music", filename);
+ Error(ERR_WARN, "cannot read music file '%s' -- no music", filename);
return FALSE;
}
#elif defined(PLATFORM_UNIX)
if (write(audio.soundserver_pipe[1], &snd_ctrl, sizeof(snd_ctrl)) < 0)
{
- Error(ERR_WARN, "cannot pipe to child process - no sounds");
+ Error(ERR_WARN, "cannot pipe to child process -- no sounds");
audio.sound_available = audio.sound_enabled = FALSE;
return;
}
#if !defined(PLATFORM_MSDOS)
if (write(audio.soundserver_pipe[1], &snd_ctrl, sizeof(snd_ctrl)) < 0)
{
- Error(ERR_WARN, "cannot pipe to child process - no sounds");
+ Error(ERR_WARN, "cannot pipe to child process -- no sounds");
audio.sound_available = audio.sound_enabled = FALSE;
return;
}
#endif
}
-/*** THE STUFF ABOVE IS ONLY USED BY THE MAIN PROCESS ***/
+/* THE STUFF ABOVE IS ONLY USED BY THE MAIN PROCESS */
+/* ========================================================================= */
projects / rocksndiamonds.git / commitdiff