#include <unistd.h>
#include <fcntl.h>
+#include "system.h"
#include "sound.h"
#include "misc.h"
return audio_fd;
}
-void UnixOpenAudio(struct AudioSystemInfo *audio)
+void UnixOpenAudio(void)
{
static char *audio_device_name[] =
{
close(audio_fd);
- audio->device_name = audio_device_name[i];
- audio->sound_available = TRUE;
- audio->sound_enabled = TRUE;
+ audio.device_name = audio_device_name[i];
+ audio.sound_available = TRUE;
+ audio.sound_enabled = TRUE;
#if defined(AUDIO_STREAMING_DSP)
- audio->loops_available = TRUE;
+ audio.music_available = TRUE;
+ audio.loops_available = TRUE;
#endif
}
-void UnixCloseAudio(struct AudioSystemInfo *audio)
+void UnixCloseAudio(void)
{
- if (audio->device_fd)
- close(audio->device_fd);
+ if (audio.device_fd)
+ close(audio.device_fd);
}
#endif /* PLATFORM_UNIX */
byte *sample_ptr;
long sample_size;
static long max_sample_size = 0;
- static long fragment_size = 0;
- /* Even if the stereo flag is used as being boolean, it must be
- defined as an integer, else 'ioctl()' will fail! */
+ static long fragment_size = DEFAULT_AUDIO_FRAGMENT_SIZE;
+ int sample_rate = DEFAULT_AUDIO_SAMPLE_RATE;
int stereo = TRUE;
-#if 0
- int sample_rate = 8000;
-#else
- int sample_rate = 22050;
-#endif
+ /* 'ioctl()' expects pointer to integer value for stereo flag
+ (boolean is defined as 'char', which will not work here) */
if (playing_sounds ||
(audio.device_fd = OpenAudioDevice(audio.device_name)) >= 0)
{
if (!playing_sounds) /* we just opened the audio device */
{
- /* 2 buffers / 512 bytes, giving 1/16 second resolution */
- /* (with stereo the effective buffer size will shrink to 256) */
- fragment_size = 0x00020009;
+ 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_size) < 0)
+ 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");
FD_SET(audio.soundserver_pipe[0], &sound_fdset);
/* first clear the last premixing buffer */
- memset(premix_last_buffer,0,fragment_size*sizeof(int));
+ memset(premix_last_buffer, 0, fragment_size * sizeof(int));
for(i=0;i<MAX_SOUNDS_PLAYING;i++)
{
}
/* put last mixing buffer to final playing buffer */
- for(i=0;i<fragment_size;i++)
+ for(i=0; i<fragment_size; i++)
{
if (premix_last_buffer[i]<-255)
playing_buffer[i] = 0;
}
/* finally play the sound fragment */
- write(audio.device_fd, playing_buffer,fragment_size);
+ write(audio.device_fd, playing_buffer, fragment_size);
}
/* if no sounds playing, free device for other sound programs */
#if !defined(PLATFORM_MSDOS)
- if ((file = fopen(filename, "r")) == NULL)
+ if ((file = fopen(filename, MODE_READ)) == NULL)
{
Error(ERR_WARN, "cannot open sound file '%s' - no sounds", filename);
return FALSE;
return TRUE;
}
+void PlayMusic(int nr)
+{
+ if (!audio.music_available)
+ return;
+
+#if defined(TARGET_SDL)
+ if (audio.mods_available)
+ {
+ Mix_VolumeMusic(SOUND_MAX_VOLUME);
+ /* start playing module */
+ }
+ else /* play music loop */
+ {
+ Mix_Volume(audio.music_channel, SOUND_MAX_VOLUME);
+ Mix_PlayChannel(audio.music_channel, Sound[nr].mix_chunk, -1);
+ }
+#else
+ audio.music_nr = nr;
+ PlaySoundLoop(nr);
+#endif
+}
+
void PlaySound(int nr)
{
PlaySoundExt(nr, PSND_MAX_VOLUME, PSND_MIDDLE, PSND_NO_LOOP);
snd_ctrl.data_len = Sound[nr].data_len;
#if defined(TARGET_SDL)
-
- Mix_Volume(-1, SDL_MIX_MAXVOLUME / 4);
- Mix_VolumeMusic(SDL_MIX_MAXVOLUME / 4);
-
+ Mix_Volume(-1, SOUND_MAX_VOLUME);
Mix_PlayChannel(-1, Sound[nr].mix_chunk, (loop ? -1 : 0));
-
-#else
-#if !defined(PLATFORM_MSDOS)
+#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");
audio.sound_available = audio.sound_enabled = FALSE;
return;
}
-#else
+#elif defined(PLATFORM_MSDOS)
sound_handler(snd_ctrl);
#endif
+}
+
+void FadeMusic(void)
+{
+#if defined(TARGET_SDL)
+ if (audio.mods_available)
+ Mix_FadeOutMusic(SOUND_FADING_INTERVAL);
+ else
+ Mix_FadeOutChannel(audio.music_channel, SOUND_FADING_INTERVAL);
+#else
+ FadeSound(audio.music_nr);
#endif
}
StopSoundExt(-1, SSND_FADE_ALL_SOUNDS);
}
+void StopMusic(void)
+{
+#if defined(TARGET_SDL)
+ if (audio.mods_available)
+ Mix_HaltMusic();
+ else
+ Mix_HaltChannel(audio.music_channel);
+#else
+ StopSound(audio.music_nr);
+#endif
+}
+
void StopSound(int nr)
{
StopSoundExt(nr, SSND_STOP_SOUND);
if (SSND_FADING(method))
{
- Mix_FadeOutChannel(-1, 1000);
- Mix_FadeOutMusic(1000);
+ int i;
+
+ for (i=0; i<audio.channels; i++)
+ if (i != audio.music_channel || snd_ctrl.stop_all_sounds)
+ Mix_FadeOutChannel(i, SOUND_FADING_INTERVAL);
+ if (snd_ctrl.stop_all_sounds)
+ Mix_FadeOutMusic(SOUND_FADING_INTERVAL);
}
else
{
- Mix_HaltChannel(-1);
- Mix_HaltMusic();
+ int i;
+
+ for (i=0; i<audio.channels; i++)
+ if (i != audio.music_channel || snd_ctrl.stop_all_sounds)
+ Mix_HaltChannel(i);
+ if (snd_ctrl.stop_all_sounds)
+ Mix_HaltMusic();
}
#else
projects / rocksndiamonds.git / blobdiff