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https://github.com/scp-fs2open/fs2open.github.com.git
synced 2026-11-10 04:31:34 -10:00
461 lines
10 KiB
C++
461 lines
10 KiB
C++
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#include "globalincs/pstypes.h"
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#include "sound/openal.h"
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#include "osapi/osregistry.h"
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#include <string>
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#include <algorithm>
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#ifdef _WIN32
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#define VC_EXTRALEAN
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#include <windows.h>
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#endif
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static SCP_string Playback_device;
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static SCP_string Capture_device;
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enum {
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OAL_DEVICE_GENERIC,
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OAL_DEVICE_DEFAULT,
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OAL_DEVICE_USER
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};
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typedef struct OALdevice {
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SCP_string device_name;
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int type;
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bool usable;
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OALdevice() :
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type(OAL_DEVICE_GENERIC), usable(false)
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{
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}
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OALdevice(const char *name) :
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device_name(name), type(OAL_DEVICE_GENERIC), usable(false)
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{
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}
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} OALdevice;
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static SCP_vector<OALdevice> PlaybackDevices;
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static SCP_vector<OALdevice> CaptureDevices;
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// enumeration extension
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#ifndef ALC_ALL_DEVICES_SPECIFIER
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#define ALC_ALL_DEVICES_SPECIFIER 0x1013
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#endif
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//--------------------------------------------------------------------------
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// openal_error_string()
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//
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// Returns the human readable error string if there is an error or NULL if not
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//
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const char *openal_error_string(int get_alc)
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{
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int i;
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if (get_alc) {
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ALCdevice *device = alcGetContextsDevice( alcGetCurrentContext() );
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i = alcGetError(device);
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if ( i != ALC_NO_ERROR )
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return (const char*) alcGetString(device, i);
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}
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else {
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i = alGetError();
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if ( i != AL_NO_ERROR )
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return (const char*)alGetString(i);
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}
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return NULL;
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}
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ALenum openal_get_format(ALint bits, ALint n_channels)
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{
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ALenum format = AL_INVALID_VALUE;
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if ( (n_channels < 1) || (n_channels > 2) ) {
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return format;
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}
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switch (bits) {
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case 32:
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format = (n_channels == 1) ? AL_FORMAT_MONO_FLOAT32 : AL_FORMAT_STEREO_FLOAT32;
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break;
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case 16:
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format = (n_channels == 1) ? AL_FORMAT_MONO16 : AL_FORMAT_STEREO16;
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break;
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case 8:
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format = (n_channels == 1) ? AL_FORMAT_MONO8 : AL_FORMAT_STEREO8;
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break;
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}
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return format;
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}
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static bool openal_device_sort_func(const OALdevice &d1, const OALdevice &d2)
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{
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if (d1.type > d2.type) {
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return true;
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}
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return false;
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}
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static void find_playback_device()
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{
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const char *user_device = os_config_read_string( "Sound", "PlaybackDevice", NULL );
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const char *default_device = (const char*) alcGetString( NULL, ALC_DEFAULT_DEVICE_SPECIFIER );
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// in case they are the same, we only want to test it once
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if ( (user_device && default_device) && !strcmp(user_device, default_device) ) {
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user_device = NULL;
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}
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if ( alcIsExtensionPresent(NULL, (const ALCchar*)"ALC_ENUMERATION_EXT") == AL_TRUE ) {
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const char *all_devices = NULL;
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if ( alcIsExtensionPresent(NULL, (const ALCchar*)"ALC_ENUMERATE_ALL_EXT") == AL_TRUE ) {
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all_devices = (const char*) alcGetString(NULL, ALC_ALL_DEVICES_SPECIFIER);
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} else {
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all_devices = (const char*) alcGetString(NULL, ALC_DEVICE_SPECIFIER);
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}
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const char *str_list = all_devices;
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int ext_length = 0;
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if ( (str_list != NULL) && ((ext_length = strlen(str_list)) > 0) ) {
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while (ext_length) {
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OALdevice new_device(str_list);
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if (user_device && !strcmp(str_list, user_device)) {
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new_device.type = OAL_DEVICE_USER;
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} else if (default_device && !strcmp(str_list, default_device)) {
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new_device.type = OAL_DEVICE_DEFAULT;
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}
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PlaybackDevices.push_back( new_device );
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str_list += (ext_length + 1);
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ext_length = strlen(str_list);
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}
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}
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} else {
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if (default_device) {
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OALdevice new_device(default_device);
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new_device.type = OAL_DEVICE_DEFAULT;
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PlaybackDevices.push_back( new_device );
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}
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if (user_device) {
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OALdevice new_device(user_device);
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new_device.type = OAL_DEVICE_USER;
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PlaybackDevices.push_back( new_device );
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}
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}
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if ( PlaybackDevices.empty() ) {
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return;
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}
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std::sort( PlaybackDevices.begin(), PlaybackDevices.end(), openal_device_sort_func );
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ALCdevice *device = NULL;
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ALCcontext *context = NULL;
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// for each device that we have available, try and figure out which to use
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for (size_t idx = 0; idx < PlaybackDevices.size(); idx++) {
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OALdevice *pdev = &PlaybackDevices[idx];
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// open our specfic device
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device = alcOpenDevice( (const ALCchar*) pdev->device_name.c_str() );
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if (device == NULL) {
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continue;
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}
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context = alcCreateContext(device, NULL);
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if (context == NULL) {
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alcCloseDevice(device);
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continue;
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}
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alcMakeContextCurrent(context);
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alcGetError(device);
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// check how many sources we can create
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static const int MIN_SOURCES = 48; // MAX_CHANNELS + 16 spare
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int si = 0;
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for (si = 0; si < MIN_SOURCES; si++) {
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ALuint source_id = 0;
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alGenSources(1, &source_id);
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if (alGetError() != AL_NO_ERROR) {
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break;
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}
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alDeleteSources(1, &source_id);
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}
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if (si == MIN_SOURCES) {
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// ok, it supports our minimum requirements
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pdev->usable = true;
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// need this for the future
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Playback_device = pdev->device_name;
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// done
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break;
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} else {
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// clean up for next pass
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alcMakeContextCurrent(NULL);
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alcDestroyContext(context);
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alcCloseDevice(device);
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context = NULL;
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device = NULL;
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}
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}
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alcMakeContextCurrent(NULL);
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if (context) {
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alcDestroyContext(context);
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}
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if (device) {
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alcCloseDevice(device);
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}
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}
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static void find_capture_device()
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{
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const char *user_device = os_config_read_string( "Sound", "CaptureDevice", NULL );
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const char *default_device = (const char*) alcGetString( NULL, ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER );
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// in case they are the same, we only want to test it once
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if ( (user_device && default_device) && !strcmp(user_device, default_device) ) {
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user_device = NULL;
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}
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if ( alcIsExtensionPresent(NULL, (const ALCchar*)"ALC_ENUMERATION_EXT") == AL_TRUE ) {
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const char *all_devices = (const char*) alcGetString(NULL, ALC_CAPTURE_DEVICE_SPECIFIER);
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const char *str_list = all_devices;
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int ext_length = 0;
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if ( (str_list != NULL) && ((ext_length = strlen(str_list)) > 0) ) {
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while (ext_length) {
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OALdevice new_device(str_list);
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if (user_device && !strcmp(str_list, user_device)) {
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new_device.type = OAL_DEVICE_USER;
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} else if (default_device && !strcmp(str_list, default_device)) {
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new_device.type = OAL_DEVICE_DEFAULT;
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}
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CaptureDevices.push_back( new_device );
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str_list += (ext_length + 1);
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ext_length = strlen(str_list);
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}
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}
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} else {
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if (default_device) {
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OALdevice new_device(default_device);
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new_device.type = OAL_DEVICE_DEFAULT;
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CaptureDevices.push_back( new_device );
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}
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if (user_device) {
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OALdevice new_device(user_device);
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new_device.type = OAL_DEVICE_USER;
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CaptureDevices.push_back( new_device );
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}
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}
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if ( CaptureDevices.empty() ) {
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return;
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}
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std::sort( CaptureDevices.begin(), CaptureDevices.end(), openal_device_sort_func );
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// for each device that we have available, try and figure out which to use
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for (size_t idx = 0; idx < CaptureDevices.size(); idx++) {
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const ALCchar *device_name = CaptureDevices[idx].device_name.c_str();
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ALCdevice *device = alcCaptureOpenDevice(device_name, 22050, AL_FORMAT_MONO8, 22050 * 2);
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if (device == NULL) {
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continue;
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}
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if (alcGetError(device) != ALC_NO_ERROR) {
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alcCaptureCloseDevice(device);
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continue;
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}
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// ok, we should be good with this one
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Capture_device = CaptureDevices[idx].device_name;
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alcCaptureCloseDevice(device);
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break;
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}
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}
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// initializes hardware device from perferred/default/enumerated list
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bool openal_init_device(SCP_string *playback, SCP_string *capture)
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{
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if ( !Playback_device.empty() ) {
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if (playback) {
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*playback = Playback_device;
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}
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if (capture) {
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*capture = Capture_device;
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}
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return true;
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}
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if (playback) {
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playback->erase();
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}
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if (capture) {
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capture->erase();
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}
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// initialize default setup first, for version check...
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ALCdevice *device = alcOpenDevice(NULL);
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if (device == NULL) {
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return false;
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}
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ALCcontext *context = alcCreateContext(device, NULL);
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if (context == NULL) {
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alcCloseDevice(device);
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return false;
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}
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alcMakeContextCurrent(context);
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// version check (for 1.0 or 1.1)
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ALCint AL_minor_version = 0;
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alcGetIntegerv(NULL, ALC_MINOR_VERSION, sizeof(ALCint), &AL_minor_version);
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if (AL_minor_version < 1) {
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#ifdef _WIN32
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MessageBox(NULL, "OpenAL 1.1 or newer is required for proper operation. Please upgrade your OpenAL drivers, which\nare available at http://www.openal.org/downloads.html, and try running the game again.", NULL, MB_OK);
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#else
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printf("OpenAL 1.1 or newer is required for proper operation.\n");
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printf("Please upgrade to a newer version if on OS X or switch\n");
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printf("to OpenAL-Soft on Linux.\n");
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#endif
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alcMakeContextCurrent(NULL);
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alcDestroyContext(context);
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alcCloseDevice(device);
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return false;
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}
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alcGetError(device);
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mprintf(( " OpenAL Vendor : %s\n", alGetString( AL_VENDOR ) ));
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mprintf(( " OpenAL Renderer : %s\n", alGetString( AL_RENDERER ) ));
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mprintf(( " OpenAL Version : %s\n", alGetString( AL_VERSION ) ));
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mprintf(( "\n" ));
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// close default device
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alcMakeContextCurrent(NULL);
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alcDestroyContext(context);
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alcCloseDevice(device);
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// go through and find out what devices we actually want to use ...
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find_playback_device();
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find_capture_device();
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if ( Playback_device.empty() ) {
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return false;
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}
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#ifndef NDEBUG
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if ( !PlaybackDevices.empty() ) {
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nprintf(("OpenAL", " Available Playback Devices:\n"));
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for (size_t idx = 0; idx < PlaybackDevices.size(); idx++) {
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nprintf(("OpenAL", " %s", PlaybackDevices[idx].device_name.c_str()));
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if (PlaybackDevices[idx].type == OAL_DEVICE_USER) {
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nprintf(("OpenAL", " *preferred*\n"));
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} else if (PlaybackDevices[idx].type == OAL_DEVICE_DEFAULT) {
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nprintf(("OpenAL", " *default*\n"));
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} else {
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nprintf(("OpenAL", "\n"));
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}
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}
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}
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if ( !CaptureDevices.empty() ) {
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if ( !PlaybackDevices.empty() ) {
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nprintf(("OpenAL", "\n"));
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}
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nprintf(("OpenAL", " Available Capture Devices:\n"));
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for (size_t idx = 0; idx < CaptureDevices.size(); idx++) {
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nprintf(("OpenAL", " %s", CaptureDevices[idx].device_name.c_str()));
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if (CaptureDevices[idx].type == OAL_DEVICE_USER) {
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nprintf(("OpenAL", " *preferred*\n"));
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} else if (CaptureDevices[idx].type == OAL_DEVICE_DEFAULT) {
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nprintf(("OpenAL", " *default*\n"));
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} else {
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nprintf(("OpenAL", "\n"));
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}
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}
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nprintf(("OpenAL", "\n"));
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}
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#endif
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// cleanup
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PlaybackDevices.clear();
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CaptureDevices.clear();
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if (playback) {
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*playback = Playback_device;
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}
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if (capture) {
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*capture = Capture_device;
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}
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return true;
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}
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