Wing Commander
Reconstructed Win32 source (1996)
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system.cpp File Reference
ix audio library (C++)

Sound-system state and voice allocation. More...

#include "ix.h"
#include <assert.h>
#include <limits.h>

Go to the source code of this file.

Macros

#define IX_SYSTEM_FILE   "D:\\Rnd\\prj\\ix\\src\\sound\\system.cpp"

Functions

int ix_system_init (void)
void ix_system_service_sounds (void)
void ix_system_shutdown (void)
void ix_system_configure (int option, void *value)
unsigned short ix_system_get_master_volume (void)
void ix_system_set_master_volume (unsigned short volume)
int ix_system_get_voice_count (void)
void ix_system_set_voice_count (int voiceCount)
IxSample * ix_system_new_sample (void)
void ix_system_delete_sample (IxSample *sample)
void ix_system_delete_all_samples (void)
IxSound * ix_system_new_sound (IxSample *sample)
void ix_system_delete_sound (IxSound *sound)
void ix_system_delete_all_sounds (void)
int ix_system_release_voice (IxSound *sound)
void ix_system_assign_voice (IxSound *sound, int voice)
IxSound * ix_system_find_highest_waiting (IxSound *sound, unsigned int minimumPriority)
IxSound * ix_system_find_lowest_playing (IxSound *sound, unsigned int maximumPriority)
int ix_system_find_free_voice (void)

Variables

unsigned int dwSoundStateFlags
IxSound * pIdleSoundList
IxSample * pSamples
int nActiveVoices
int nSystemVoices
IxSound * pPlayingSoundList
IxSound * pQueuedSoundList

Detailed Description

Sound-system state and voice allocation.

Originally D:\Rnd\prj\ix\src\sound\system.cpp, address range 447200-447a1f. The assert paths identify the source; linker INT3 fill marks the object boundaries.

Definition in file system.cpp.

Macro Definition Documentation

◆ IX_SYSTEM_FILE

#define IX_SYSTEM_FILE   "D:\\Rnd\\prj\\ix\\src\\sound\\system.cpp"

Definition at line 22 of file system.cpp.

Referenced by ix_system_init(), and ix_system_set_voice_count().

Function Documentation

◆ ix_system_assign_voice()

void ix_system_assign_voice ( IxSound * sound,
int voice )

Definition at line 234 of file system.cpp.

References IxSample::bitsPerSample, IxSample::buffer, IxSample::bytesPerFrame, IxSample::channels, IxSound::flags, IxSample::frequency, ix_dsp_get_tick(), ix_dspv_set_active(), ix_dspv_set_bits_per_sample(), ix_dspv_set_buffer(), ix_dspv_set_channels(), ix_dspv_set_flag4(), ix_dspv_set_frequency(), ix_dspv_set_pan(), ix_dspv_set_position(), ix_dspv_set_volume(), IX_SOUND_FREQUENCY_DIRTY, IX_SOUND_HAS_VOICE, IX_SOUND_LOOPING, IX_SOUND_PAN_DIRTY, IX_SOUND_VOLUME_DIRTY, ix_system_assign_voice(), IxSample::loopEnd, IxSample::loopStart, nActiveVoices, IxSound::pan, IxSound::pitchOffset, IxSample::rateDenominator, IxSample::rateNumerator, IxSound::sample, IxSample::sampleCount, IxSound::startTime, IxSound::voice, and IxSound::volume.

Referenced by IxSound::ix_sound_reprioritise(), ix_sound_start(), ix_sound_stop(), and ix_system_assign_voice().

◆ ix_system_configure()

void ix_system_configure ( int option,
void * value )

Definition at line 104 of file system.cpp.

References ix_dsp_configure(), and ix_system_configure().

Referenced by CollectRasterClipColours(), InitializeAudioSystem(), and ix_system_configure().

◆ ix_system_delete_all_samples()

void ix_system_delete_all_samples ( void )

Definition at line 159 of file system.cpp.

References ix_system_delete_all_samples(), ix_system_delete_sample(), IxSample::next, and pSamples.

Referenced by CollectRasterClipColours(), ix_system_delete_all_samples(), ix_system_shutdown(), ServiceAudioStream(), and stop_all_sounds().

◆ ix_system_delete_all_sounds()

void ix_system_delete_all_sounds ( void )

Definition at line 197 of file system.cpp.

References ix_system_delete_all_sounds(), ix_system_delete_sound(), IxSound::next, pIdleSoundList, pPlayingSoundList, and pQueuedSoundList.

Referenced by CollectRasterClipColours(), ix_system_delete_all_sounds(), ix_system_shutdown(), ServiceAudioStream(), and stop_all_sounds().

◆ ix_system_delete_sample()

void ix_system_delete_sample ( IxSample * sample)

Definition at line 150 of file system.cpp.

References IxSample::ix_sample_destruct(), and ix_system_delete_sample().

Referenced by ix_system_delete_all_samples(), and ix_system_delete_sample().

◆ ix_system_delete_sound()

void ix_system_delete_sound ( IxSound * sound)

Definition at line 184 of file system.cpp.

References IxSound::flags, IX_SOUND_DELETE_ON_STOP, IX_SOUND_PLAYING, ix_sound_stop(), ix_sound_unlink_from_free_list(), and ix_system_delete_sound().

Referenced by CollectRasterClipColours(), ix_sound_stop(), ix_system_delete_all_sounds(), ix_system_delete_sound(), ReleaseFinishedSoundEntries(), and StopSoundsUsingWave().

◆ ix_system_find_free_voice()

int ix_system_find_free_voice ( void )

Definition at line 316 of file system.cpp.

References ix_dspv_get_flags(), ix_system_find_free_voice(), IX_VOICE_ACTIVE, and nSystemVoices.

Referenced by ix_sound_start(), and ix_system_find_free_voice().

◆ ix_system_find_highest_waiting()

IxSound * ix_system_find_highest_waiting ( IxSound * sound,
unsigned int minimumPriority )

Definition at line 284 of file system.cpp.

References ix_system_find_highest_waiting(), IxSound::next, and IxSound::priority.

Referenced by IxSound::ix_sound_reprioritise(), ix_sound_stop(), and ix_system_find_highest_waiting().

◆ ix_system_find_lowest_playing()

IxSound * ix_system_find_lowest_playing ( IxSound * sound,
unsigned int maximumPriority )

Definition at line 300 of file system.cpp.

References ix_system_find_lowest_playing(), IxSound::next, and IxSound::priority.

Referenced by IxSound::ix_sound_reprioritise(), ix_sound_start(), and ix_system_find_lowest_playing().

◆ ix_system_get_master_volume()

unsigned short ix_system_get_master_volume ( void )

Definition at line 110 of file system.cpp.

References ix_dsp_get_master_volume(), and ix_system_get_master_volume().

Referenced by ix_system_get_master_volume().

◆ ix_system_get_voice_count()

int ix_system_get_voice_count ( void )

Definition at line 122 of file system.cpp.

References ix_system_get_voice_count(), and nSystemVoices.

Referenced by ix_system_get_voice_count().

◆ ix_system_init()

int ix_system_init ( void )

Definition at line 25 of file system.cpp.

References dwSoundStateFlags, ix_dsp_get_voice_count(), ix_dsp_init(), ix_log_printf(), IX_SYSTEM_FILE, ix_system_init(), ix_system_set_master_volume(), nActiveVoices, nSystemVoices, pIdleSoundList, pPlayingSoundList, pQueuedSoundList, and pSamples.

Referenced by CollectRasterClipColours(), InitializeAudioSystem(), and ix_system_init().

◆ ix_system_new_sample()

IxSample * ix_system_new_sample ( void )

Definition at line 139 of file system.cpp.

References IxSample::ix_sample_construct(), ix_system_new_sample(), and pIxMalloc().

Referenced by CollectRasterClipColours(), ix_system_new_sample(), PlaySnowStaticSound(), and playWAVE().

◆ ix_system_new_sound()

IxSound * ix_system_new_sound ( IxSample * sample)

Definition at line 173 of file system.cpp.

References ix_system_new_sound(), IxSound::ix_system_sound_construct_centred(), and pIxMalloc().

Referenced by CollectRasterClipColours(), ix_system_new_sound(), PlaySnowStaticSound(), and playWAVE().

◆ ix_system_release_voice()

int ix_system_release_voice ( IxSound * sound)

Definition at line 222 of file system.cpp.

References IxSound::flags, ix_dspv_clear_active(), IX_SOUND_HAS_VOICE, ix_system_release_voice(), nActiveVoices, and IxSound::voice.

Referenced by IxSound::ix_sound_reprioritise(), ix_sound_start(), ix_sound_stop(), and ix_system_release_voice().

◆ ix_system_service_sounds()

void ix_system_service_sounds ( void )

Definition at line 46 of file system.cpp.

References IxSound::flags, IxSample::frequency, ix_dsp_get_tick(), ix_dspv_get_flags(), ix_dspv_set_frequency(), ix_dspv_set_pan(), ix_dspv_set_volume(), IX_SOUND_FREQUENCY_DIRTY, IX_SOUND_PAN_DIRTY, ix_sound_stop(), IX_SOUND_VOLUME_DIRTY, ix_system_service_sounds(), IX_VOICE_ACTIVE, IxSound::next, IxSound::pan, IxSound::pitchOffset, pPlayingSoundList, pQueuedSoundList, IxSound::sample, IxSound::stopTime, IxSound::voice, and IxSound::volume.

Referenced by CollectRasterClipColours(), ix_system_service_sounds(), and ServiceSoundSystem().

◆ ix_system_set_master_volume()

void ix_system_set_master_volume ( unsigned short volume)

Definition at line 116 of file system.cpp.

References ix_dsp_set_master_volume(), and ix_system_set_master_volume().

Referenced by CollectRasterClipColours(), ix_system_init(), ix_system_set_master_volume(), and SetSoundEffectsVolume().

◆ ix_system_set_voice_count()

void ix_system_set_voice_count ( int voiceCount)

Definition at line 128 of file system.cpp.

References ix_dsp_get_voice_count(), ix_dsp_set_voice_count(), ix_log_printf(), IX_SYSTEM_FILE, ix_system_set_voice_count(), nActiveVoices, and nSystemVoices.

Referenced by CollectRasterClipColours(), InitializeAudioSystem(), and ix_system_set_voice_count().

◆ ix_system_shutdown()

void ix_system_shutdown ( void )

Definition at line 93 of file system.cpp.

References dwSoundStateFlags, ix_dsp_shutdown(), ix_system_delete_all_samples(), ix_system_delete_all_sounds(), and ix_system_shutdown().

Referenced by CollectRasterClipColours(), ix_system_shutdown(), and ServiceAudioStream().

Variable Documentation

◆ dwSoundStateFlags

unsigned int dwSoundStateFlags

Definition at line 14 of file system.cpp.

Referenced by ix_system_init(), and ix_system_shutdown().

◆ nActiveVoices

int nActiveVoices

Definition at line 17 of file system.cpp.

Referenced by ix_sound_start(), ix_system_assign_voice(), ix_system_init(), ix_system_release_voice(), and ix_system_set_voice_count().

◆ nSystemVoices

int nSystemVoices

Definition at line 18 of file system.cpp.

Referenced by ix_sound_start(), ix_system_find_free_voice(), ix_system_get_voice_count(), ix_system_init(), and ix_system_set_voice_count().

◆ pIdleSoundList

IxSound* pIdleSoundList

Definition at line 15 of file system.cpp.

Referenced by ix_sound_start(), ix_sound_stop(), ix_sound_unlink_from_free_list(), ix_system_delete_all_sounds(), ix_system_init(), and IxSound::ix_system_sound_init().

◆ pPlayingSoundList

IxSound* pPlayingSoundList

Definition at line 19 of file system.cpp.

Referenced by IxSound::ix_sound_reprioritise(), ix_sound_start(), ix_sound_stop(), ix_system_delete_all_sounds(), ix_system_init(), and ix_system_service_sounds().

◆ pQueuedSoundList

IxSound* pQueuedSoundList

Definition at line 20 of file system.cpp.

Referenced by IxSound::ix_sound_reprioritise(), ix_sound_start(), ix_sound_stop(), ix_system_delete_all_sounds(), ix_system_init(), and ix_system_service_sounds().

◆ pSamples

IxSample* pSamples

Definition at line 16 of file system.cpp.

Referenced by IxSample::ix_sample_construct(), IxSample::ix_sample_destruct(), ix_system_delete_all_samples(), and ix_system_init().