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godot/servers/spatial_sound/spatial_sound_server_sw.cpp
Rémi Verschelde 2712014744 Update copyright statements to 2018 
Happy new year to the wonderful Godot community!
2018-01-02 11:27:24 +01:00

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/*************************************************************************/
/* spatial_sound_server_sw.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "spatial_sound_server_sw.h"
#include "os/os.h"
#include "servers/audio/audio_filter_sw.h"
int SpatialSoundServerSW::InternalAudioStream::get_channel_count() const {
return AudioServer::get_singleton()->get_default_channel_count();
}
void SpatialSoundServerSW::InternalAudioStream::set_mix_rate(int p_rate) {
}
void SpatialSoundServerSW::InternalAudioStream::update() {
owner->_update_sources();
}
bool SpatialSoundServerSW::InternalAudioStream::mix(int32_t *p_buffer, int p_frames) {
return owner->internal_buffer_mix(p_buffer, p_frames);
}
void SpatialSoundServerSW::_update_sources() {
_THREAD_SAFE_METHOD_
for (Set<Source *>::Element *E = streaming_sources.front(); E; E = E->next()) {
Source *s = E->get();
ERR_CONTINUE(!s->stream);
s->stream->update();
}
}
SpatialSoundServerSW::Room::Room() {
// params[ROOM_PARAM_SPEED_OF_SOUND]=343.0;
params[ROOM_PARAM_SPEED_OF_SOUND_SCALE] = 1;
params[ROOM_PARAM_DOPPLER_FACTOR] = 1.0;
params[ROOM_PARAM_PITCH_SCALE] = 1.0;
params[ROOM_PARAM_VOLUME_SCALE_DB] = 0;
params[ROOM_PARAM_REVERB_SEND] = 0;
params[ROOM_PARAM_CHORUS_SEND] = 0;
params[ROOM_PARAM_ATTENUATION_SCALE] = 1.0;
params[ROOM_PARAM_ATTENUATION_HF_CUTOFF] = 5000;
params[ROOM_PARAM_ATTENUATION_HF_FLOOR_DB] = -24.0;
params[ROOM_PARAM_ATTENUATION_HF_RATIO_EXP] = 1.0;
params[ROOM_PARAM_ATTENUATION_REVERB_SCALE] = 0.0;
override_other_sources = false;
reverb = ROOM_REVERB_HALL;
octree_id = 0;
level = -1;
}
SpatialSoundServerSW::Source::Source() {
params[SOURCE_PARAM_VOLUME_DB] = 0.0;
params[SOURCE_PARAM_PITCH_SCALE] = 1.0;
params[SOURCE_PARAM_ATTENUATION_MIN_DISTANCE] = 1;
params[SOURCE_PARAM_ATTENUATION_MAX_DISTANCE] = 100;
params[SOURCE_PARAM_ATTENUATION_DISTANCE_EXP] = 1.0; //linear (and not really good)
params[SOURCE_PARAM_EMISSION_CONE_DEGREES] = 180.0; //cone disabled
params[SOURCE_PARAM_EMISSION_CONE_ATTENUATION_DB] = -6.0; //minus 6 db attenuation
stream = NULL;
voices.resize(1);
last_voice = 0;
}
SpatialSoundServerSW::Source::Voice::Voice() {
active = false;
restart = false;
priority = 0;
pitch_scale = 1.0;
volume_scale = 0.0;
voice_rid = AudioServer::get_singleton()->voice_create();
}
SpatialSoundServerSW::Source::Voice::~Voice() {
AudioServer::get_singleton()->free(voice_rid);
}
SpatialSoundServerSW::Listener::Listener() {
params[LISTENER_PARAM_VOLUME_SCALE_DB] = 0.0;
params[LISTENER_PARAM_PITCH_SCALE] = 1.0;
params[LISTENER_PARAM_ATTENUATION_SCALE] = 1.0;
params[LISTENER_PARAM_RECEPTION_CONE_DEGREES] = 60.0;
params[LISTENER_PARAM_RECEPTION_CONE_ATTENUATION_DB] = -6; // minus six decibels
}
/* SPACE */
RID SpatialSoundServerSW::space_create() {
Space *space = memnew(Space);
RID space_rid = space_owner.make_rid(space);
space->default_room = room_create();
room_set_space(space->default_room, space_rid);
return space_rid;
}
/* ROOM */
RID SpatialSoundServerSW::room_create() {
Room *room = memnew(Room);
return room_owner.make_rid(room);
}
void SpatialSoundServerSW::room_set_space(RID p_room, RID p_space) {
Room *room = room_owner.get(p_room);
ERR_FAIL_COND(!room);
if (room->space.is_valid()) {
Space *space = space_owner.get(room->space);
space->rooms.erase(p_room);
space->octree.erase(room->octree_id);
//room->octree_id=0;
}
room->space = RID();
if (p_space.is_valid()) {
Space *space = space_owner.get(p_space);
ERR_FAIL_COND(!space);
space->rooms.insert(p_room);
room->octree_id = space->octree.create(room, AABB());
//set bounds
AABB aabb = room->bounds.is_empty() ? AABB() : room->bounds.get_aabb();
space->octree.move(room->octree_id, room->transform.xform(aabb));
room->space = p_space;
}
}
RID SpatialSoundServerSW::room_get_space(RID p_room) const {
Room *room = room_owner.get(p_room);
ERR_FAIL_COND_V(!room, RID());
return room->space;
}
void SpatialSoundServerSW::room_set_bounds(RID p_room, const BSP_Tree &p_bounds) {
Room *room = room_owner.get(p_room);
ERR_FAIL_COND(!room);
room->bounds = p_bounds;
if (!room->space.is_valid())
return;
AABB aabb = room->bounds.is_empty() ? AABB() : room->bounds.get_aabb();
Space *space = space_owner.get(room->space);
ERR_FAIL_COND(!space);
space->octree.move(room->octree_id, room->transform.xform(aabb));
}
BSP_Tree SpatialSoundServerSW::room_get_bounds(RID p_room) const {
Room *room = room_owner.get(p_room);
ERR_FAIL_COND_V(!room, BSP_Tree());
return room->bounds;
}
void SpatialSoundServerSW::room_set_transform(RID p_room, const Transform &p_transform) {
if (space_owner.owns(p_room))
p_room = space_owner.get(p_room)->default_room;
Room *room = room_owner.get(p_room);
ERR_FAIL_COND(!room);
room->transform = p_transform;
room->inverse_transform = p_transform.affine_inverse(); // needs to be done to unscale BSP properly
if (!room->space.is_valid())
return;
if (!room->bounds.is_empty()) {
Space *space = space_owner.get(room->space);
ERR_FAIL_COND(!space);
space->octree.move(room->octree_id, room->transform.xform(room->bounds.get_aabb()));
}
}
Transform SpatialSoundServerSW::room_get_transform(RID p_room) const {
if (space_owner.owns(p_room))
p_room = space_owner.get(p_room)->default_room;
Room *room = room_owner.get(p_room);
ERR_FAIL_COND_V(!room, Transform());
return room->transform;
}
void SpatialSoundServerSW::room_set_param(RID p_room, RoomParam p_param, float p_value) {
if (space_owner.owns(p_room))
p_room = space_owner.get(p_room)->default_room;
ERR_FAIL_INDEX(p_param, ROOM_PARAM_MAX);
Room *room = room_owner.get(p_room);
ERR_FAIL_COND(!room);
room->params[p_param] = p_value;
}
float SpatialSoundServerSW::room_get_param(RID p_room, RoomParam p_param) const {
if (space_owner.owns(p_room))
p_room = space_owner.get(p_room)->default_room;
ERR_FAIL_INDEX_V(p_param, ROOM_PARAM_MAX, 0);
Room *room = room_owner.get(p_room);
ERR_FAIL_COND_V(!room, 0);
return room->params[p_param];
}
void SpatialSoundServerSW::room_set_level(RID p_room, int p_level) {
Room *room = room_owner.get(p_room);
ERR_FAIL_COND(!room);
room->level = p_level;
}
int SpatialSoundServerSW::room_get_level(RID p_room) const {
Room *room = room_owner.get(p_room);
ERR_FAIL_COND_V(!room, 0);
return room->level;
}
void SpatialSoundServerSW::room_set_reverb(RID p_room, RoomReverb p_reverb) {
if (space_owner.owns(p_room))
p_room = space_owner.get(p_room)->default_room;
Room *room = room_owner.get(p_room);
ERR_FAIL_COND(!room);
room->reverb = p_reverb;
}
SpatialSoundServerSW::RoomReverb SpatialSoundServerSW::room_get_reverb(RID p_room) const {
if (space_owner.owns(p_room))
p_room = space_owner.get(p_room)->default_room;
Room *room = room_owner.get(p_room);
ERR_FAIL_COND_V(!room, ROOM_REVERB_SMALL);
return room->reverb;
}
//useful for underwater or rooms with very strange conditions
void SpatialSoundServerSW::room_set_force_params_to_all_sources(RID p_room, bool p_force) {
if (space_owner.owns(p_room))
p_room = space_owner.get(p_room)->default_room;
Room *room = room_owner.get(p_room);
ERR_FAIL_COND(!room);
room->override_other_sources = p_force;
}
bool SpatialSoundServerSW::room_is_forcing_params_to_all_sources(RID p_room) const {
if (space_owner.owns(p_room))
p_room = space_owner.get(p_room)->default_room;
Room *room = room_owner.get(p_room);
ERR_FAIL_COND_V(!room, false);
return room->override_other_sources;
}
/* SOURCE */
RID SpatialSoundServerSW::source_create(RID p_space) {
Space *space = space_owner.get(p_space);
ERR_FAIL_COND_V(!space, RID());
Source *source = memnew(Source);
source->space = p_space;
RID source_rid = source_owner.make_rid(source);
space->sources.insert(source_rid);
return source_rid;
}
void SpatialSoundServerSW::source_set_polyphony(RID p_source, int p_voice_count) {
ERR_FAIL_COND(p_voice_count <= 0); // more than 32 is too much, change this if you really need more
if (p_voice_count > 32) {
ERR_PRINT("Voices will be clipped to 32");
p_voice_count = 32;
}
Source *source = source_owner.get(p_source);
ERR_FAIL_COND(!source);
if (p_voice_count < source->voices.size()) {
for (int i = p_voice_count; i < source->voices.size(); i++) {
active_voices.erase(ActiveVoice(source, i)); //erase from active voices
}
}
source->voices.resize(p_voice_count);
}
int SpatialSoundServerSW::source_get_polyphony(RID p_source) const {
Source *source = source_owner.get(p_source);
ERR_FAIL_COND_V(!source, -1);
return source->voices.size();
}
void SpatialSoundServerSW::source_set_transform(RID p_source, const Transform &p_transform) {
Source *source = source_owner.get(p_source);
ERR_FAIL_COND(!source);
source->transform = p_transform;
source->transform.orthonormalize();
}
Transform SpatialSoundServerSW::source_get_transform(RID p_source) const {
Source *source = source_owner.get(p_source);
ERR_FAIL_COND_V(!source, Transform());
return source->transform;
}
void SpatialSoundServerSW::source_set_param(RID p_source, SourceParam p_param, float p_value) {
ERR_FAIL_INDEX(p_param, SOURCE_PARAM_MAX);
Source *source = source_owner.get(p_source);
ERR_FAIL_COND(!source);
source->params[p_param] = p_value;
}
float SpatialSoundServerSW::source_get_param(RID p_source, SourceParam p_param) const {
ERR_FAIL_INDEX_V(p_param, SOURCE_PARAM_MAX, 0);
Source *source = source_owner.get(p_source);
ERR_FAIL_COND_V(!source, 0);
return source->params[p_param];
}
void SpatialSoundServerSW::source_set_audio_stream(RID p_source, AudioServer::AudioStream *p_stream) {
Source *source = source_owner.get(p_source);
ERR_FAIL_COND(!source);
AudioServer::get_singleton()->lock();
source->stream = p_stream;
_THREAD_SAFE_METHOD_
if (!p_stream) {
streaming_sources.erase(source);
active_voices.erase(ActiveVoice(source, VOICE_IS_STREAM));
} else {
streaming_sources.insert(source);
active_voices.insert(ActiveVoice(source, VOICE_IS_STREAM));
zeromem(source->stream_data.filter_state, sizeof(Source::StreamData::FilterState) * 4); //reset filter for safetyness
p_stream->set_mix_rate(AudioServer::get_singleton()->get_default_mix_rate());
}
AudioServer::get_singleton()->unlock();
} //null to unset
SpatialSoundServer::SourceVoiceID SpatialSoundServerSW::source_play_sample(RID p_source, RID p_sample, int p_mix_rate, int p_voice, int p_priority) {
Source *source = source_owner.get(p_source);
ERR_FAIL_COND_V(!source, SOURCE_INVALID_VOICE);
int to_play = 0;
if (p_voice == SOURCE_NEXT_VOICE) {
const int num_voices = source->voices.size();
bool free_found = false;
int lowest_priority_voice = -1;
int lowest_priority = 0x7FFFFFFF;
for (int i = 0; i < num_voices; i++) {
const int candidate = (source->last_voice + 1 + i) % num_voices;
const Source::Voice &v = source->voices[candidate];
if (!v.active && !v.restart) {
free_found = true;
to_play = candidate;
break;
}
if (v.priority < lowest_priority) {
lowest_priority = v.priority;
lowest_priority_voice = candidate;
}
}
if (!free_found)
to_play = lowest_priority_voice;
} else
to_play = p_voice;
ERR_FAIL_INDEX_V(to_play, source->voices.size(), SOURCE_INVALID_VOICE);
if ((source->voices[to_play].active || source->voices[to_play].restart) && source->voices[to_play].priority > p_priority)
return SOURCE_INVALID_VOICE;
source->voices[to_play].restart = true;
source->voices[to_play].priority = p_priority;
source->voices[to_play].sample_rid = p_sample;
source->voices[to_play].sample_mix_rate = p_mix_rate;
source->voices[to_play].pitch_scale = 1;
source->voices[to_play].volume_scale = 0;
source->last_voice = to_play;
active_voices.insert(ActiveVoice(source, to_play));
return to_play;
}
/* VOICES */
void SpatialSoundServerSW::source_voice_set_pitch_scale(RID p_source, SourceVoiceID p_voice, float p_pitch_scale) {
Source *source = source_owner.get(p_source);
ERR_FAIL_COND(!source);
ERR_FAIL_INDEX(p_voice, source->voices.size());
source->voices[p_voice].pitch_scale = p_pitch_scale;
}
void SpatialSoundServerSW::source_voice_set_volume_scale_db(RID p_source, SourceVoiceID p_voice, float p_db) {
Source *source = source_owner.get(p_source);
ERR_FAIL_COND(!source);
ERR_FAIL_INDEX(p_voice, source->voices.size());
source->voices[p_voice].volume_scale = p_db;
}
bool SpatialSoundServerSW::source_is_voice_active(RID p_source, SourceVoiceID p_voice) const {
Source *source = source_owner.get(p_source);
ERR_FAIL_COND_V(!source, false);
ERR_FAIL_INDEX_V(p_voice, source->voices.size(), false);
return source->voices[p_voice].active || source->voices[p_voice].restart;
}
void SpatialSoundServerSW::source_stop_voice(RID p_source, SourceVoiceID p_voice) {
Source *source = source_owner.get(p_source);
ERR_FAIL_COND(!source);
ERR_FAIL_INDEX(p_voice, source->voices.size());
if (source->voices[p_voice].active) {
AudioServer::get_singleton()->voice_stop(source->voices[p_voice].voice_rid);
}
source->voices[p_voice].active = false;
source->voices[p_voice].restart = false;
active_voices.erase(ActiveVoice(source, p_voice));
}
/* LISTENER */
RID SpatialSoundServerSW::listener_create() {
Listener *listener = memnew(Listener);
RID listener_rid = listener_owner.make_rid(listener);
return listener_rid;
}
void SpatialSoundServerSW::listener_set_space(RID p_listener, RID p_space) {
Listener *listener = listener_owner.get(p_listener);
ERR_FAIL_COND(!listener);
if (listener->space.is_valid()) {
Space *lspace = space_owner.get(listener->space);
ERR_FAIL_COND(!lspace);
lspace->listeners.erase(p_listener);
}
listener->space = RID();
if (p_space.is_valid()) {
Space *space = space_owner.get(p_space);
ERR_FAIL_COND(!space);
listener->space = p_space;
space->listeners.insert(p_listener);
}
}
void SpatialSoundServerSW::listener_set_transform(RID p_listener, const Transform &p_transform) {
Listener *listener = listener_owner.get(p_listener);
ERR_FAIL_COND(!listener);
listener->transform = p_transform;
listener->transform.orthonormalize(); //must be done..
}
Transform SpatialSoundServerSW::listener_get_transform(RID p_listener) const {
Listener *listener = listener_owner.get(p_listener);
ERR_FAIL_COND_V(!listener, Transform());
return listener->transform;
}
void SpatialSoundServerSW::listener_set_param(RID p_listener, ListenerParam p_param, float p_value) {
ERR_FAIL_INDEX(p_param, LISTENER_PARAM_MAX);
Listener *listener = listener_owner.get(p_listener);
ERR_FAIL_COND(!listener);
listener->params[p_param] = p_value;
}
float SpatialSoundServerSW::listener_get_param(RID p_listener, ListenerParam p_param) const {
ERR_FAIL_INDEX_V(p_param, LISTENER_PARAM_MAX, 0);
Listener *listener = listener_owner.get(p_listener);
ERR_FAIL_COND_V(!listener, 0);
return listener->params[p_param];
}
/* MISC */
void SpatialSoundServerSW::free(RID p_id) {
if (space_owner.owns(p_id)) {
Space *space = space_owner.get(p_id);
free(space->default_room);
while (space->listeners.size()) {
listener_set_space(space->listeners.front()->get(), RID());
}
while (space->sources.size()) {
free(space->sources.front()->get());
}
while (space->rooms.size()) {
room_set_space(space->rooms.front()->get(), RID());
}
space_owner.free(p_id);
memdelete(space);
} else if (source_owner.owns(p_id)) {
Source *source = source_owner.get(p_id);
if (source->stream)
source_set_audio_stream(p_id, NULL);
Space *space = space_owner.get(source->space);
ERR_FAIL_COND(!space);
space->sources.erase(p_id);
for (int i = 0; i < source->voices.size(); i++) {
active_voices.erase(ActiveVoice(source, i));
}
source_owner.free(p_id);
memdelete(source);
} else if (listener_owner.owns(p_id)) {
Listener *listener = listener_owner.get(p_id);
if (listener->space.is_valid()) {
Space *space = space_owner.get(listener->space);
ERR_FAIL_COND(!space);
space->listeners.erase(p_id);
}
listener_owner.free(p_id);
memdelete(listener);
} else if (room_owner.owns(p_id)) {
Room *room = room_owner.get(p_id);
if (room->space.is_valid()) {
Space *space = space_owner.get(room->space);
ERR_FAIL_COND(!space);
space->octree.erase(room->octree_id);
space->rooms.erase(p_id);
}
room_owner.free(p_id);
memdelete(room);
} else {
ERR_PRINT("Attempt to free invalid ID");
}
}
void SpatialSoundServerSW::_clean_up_owner(RID_OwnerBase *p_owner, const char *p_area) {
List<RID> rids;
p_owner->get_owned_list(&rids);
for (List<RID>::Element *I = rids.front(); I; I = I->next()) {
if (OS::get_singleton()->is_stdout_verbose()) {
print_line("Leaked RID (" + itos(I->get().get_id()) + ") of type " + String(p_area));
}
free(I->get());
}
}
void SpatialSoundServerSW::init() {
internal_buffer = memnew_arr(int32_t, INTERNAL_BUFFER_SIZE * INTERNAL_BUFFER_MAX_CHANNELS);
internal_buffer_channels = AudioServer::get_singleton()->get_default_channel_count();
internal_audio_stream = memnew(InternalAudioStream);
internal_audio_stream->owner = this;
internal_audio_stream_rid = AudioServer::get_singleton()->audio_stream_create(internal_audio_stream);
AudioServer::get_singleton()->stream_set_active(internal_audio_stream_rid, true);
}
static float _get_attenuation(float cosine, float angle, float attenuation) {
float listener_ang = Math::rad2deg(Math::acos(cosine)) - angle;
if (listener_ang > 0 && angle < 180.0) {
listener_ang /= (180.0 - angle);
return Math::db2linear(Math::sin(listener_ang * (Math_PI / 2.0)) * attenuation);
}
return 1.0;
}
bool SpatialSoundServerSW::internal_buffer_mix(int32_t *p_buffer, int p_frames) {
if (streaming_sources.size() == 0)
return false; //nothing to mix
for (Set<Source *>::Element *E = streaming_sources.front(); E; E = E->next()) {
Source *s = E->get();
ERR_CONTINUE(!s->stream);
int channels = s->stream->get_channel_count();
Source::StreamData &sd = s->stream_data;
int todo = p_frames;
AudioFilterSW filter;
filter.set_sampling_rate(AudioServer::get_singleton()->get_default_mix_rate());
filter.set_cutoff(sd.filter_cutoff);
filter.set_gain(sd.filter_gain);
filter.set_resonance(1);
filter.set_mode(AudioFilterSW::HIGHSHELF);
filter.set_stages(1);
AudioFilterSW::Coeffs coefs;
filter.prepare_coefficients(&coefs);
int32_t in[4];
#ifndef SPATIAL_SOUND_SERVER_NO_FILTER
#define DO_FILTER(m_c) \
{ \
float val = in[m_c]; \
float pre = val; \
val = val * coefs.b0 + sd.filter_state[m_c].hb[0] * coefs.b1 + sd.filter_state[m_c].hb[1] * coefs.b2 + sd.filter_state[m_c].ha[0] * coefs.a1 + sd.filter_state[m_c].ha[1] * coefs.a2; \
sd.filter_state[m_c].ha[1] = sd.filter_state[m_c].ha[0]; \
sd.filter_state[m_c].hb[1] = sd.filter_state[m_c].hb[0]; \
sd.filter_state[m_c].hb[0] = pre; \
sd.filter_state[m_c].ha[0] = val; \
in[m_c] = Math::fast_ftoi(val); \
}
#else
#define DO_FILTER(m_c)
#endif
while (todo) {
int to_mix = MIN(todo, INTERNAL_BUFFER_SIZE);
s->stream->mix(internal_buffer, to_mix);
switch (internal_buffer_channels) {
case 2: {
float p = sd.panning.x * 0.5 + 0.5;
float panf[2] = { (1.0 - p), p };
panf[0] *= sd.volume;
panf[1] *= sd.volume;
int32_t pan[2] = { Math::fast_ftoi(panf[0] * (1 << 16)), Math::fast_ftoi(panf[1] * (1 << 16)) };
switch (channels) {
case 1: {
for (int i = 0; i < to_mix; i++) {
in[0] = internal_buffer[i];
in[1] = internal_buffer[i];
DO_FILTER(0);
DO_FILTER(1);
p_buffer[(i << 1) + 0] = ((in[0] >> 16) * pan[0]);
p_buffer[(i << 1) + 1] = ((in[1] >> 16) * pan[1]);
}
} break;
case 2: {
for (int i = 0; i < to_mix; i++) {
in[0] = internal_buffer[(i << 1) + 0];
in[1] = internal_buffer[(i << 1) + 1];
DO_FILTER(0);
DO_FILTER(1);
p_buffer[(i << 1) + 0] = ((in[0] >> 16) * pan[0]);
p_buffer[(i << 1) + 1] = ((in[1] >> 16) * pan[1]);
}
} break;
case 4: {
for (int i = 0; i < to_mix; i++) {
in[0] = (internal_buffer[(i << 2) + 0] + internal_buffer[(i << 2) + 2]) >> 1;
in[1] = (internal_buffer[(i << 2) + 1] + internal_buffer[(i << 2) + 3]) >> 1;
DO_FILTER(0);
DO_FILTER(1);
p_buffer[(i << 1) + 0] = ((in[0] >> 16) * pan[0]);
p_buffer[(i << 1) + 1] = ((in[1] >> 16) * pan[1]);
}
} break;
}
break;
} break;
case 4: {
float xp = sd.panning.x * 0.5 + 0.5;
float yp = sd.panning.y * 0.5 + 0.5;
float panf[4] = { (1.0 - xp) * (1.0 - yp), (xp) * (1.0 - yp), (1.0 - xp) * (yp), (xp) * (yp) };
panf[0] *= sd.volume;
panf[1] *= sd.volume;
panf[2] *= sd.volume;
panf[3] *= sd.volume;
int32_t pan[4] = {
Math::fast_ftoi(panf[0] * (1 << 16)),
Math::fast_ftoi(panf[1] * (1 << 16)),
Math::fast_ftoi(panf[2] * (1 << 16)),
Math::fast_ftoi(panf[3] * (1 << 16))
};
switch (channels) {
case 1: {
for (int i = 0; i < to_mix; i++) {
in[0] = internal_buffer[i];
in[1] = internal_buffer[i];
in[2] = internal_buffer[i];
in[3] = internal_buffer[i];
DO_FILTER(0);
DO_FILTER(1);
DO_FILTER(2);
DO_FILTER(3);
p_buffer[(i << 2) + 0] = ((in[0] >> 16) * pan[0]);
p_buffer[(i << 2) + 1] = ((in[1] >> 16) * pan[1]);
p_buffer[(i << 2) + 2] = ((in[2] >> 16) * pan[2]);
p_buffer[(i << 2) + 3] = ((in[3] >> 16) * pan[3]);
}
} break;
case 2: {
for (int i = 0; i < to_mix; i++) {
in[0] = internal_buffer[(i << 1) + 0];
in[1] = internal_buffer[(i << 1) + 1];
in[2] = internal_buffer[(i << 1) + 0];
in[3] = internal_buffer[(i << 1) + 1];
DO_FILTER(0);
DO_FILTER(1);
DO_FILTER(2);
DO_FILTER(3);
p_buffer[(i << 2) + 0] = ((in[0] >> 16) * pan[0]);
p_buffer[(i << 2) + 1] = ((in[1] >> 16) * pan[1]);
p_buffer[(i << 2) + 2] = ((in[2] >> 16) * pan[2]);
p_buffer[(i << 2) + 3] = ((in[3] >> 16) * pan[3]);
}
} break;
case 4: {
for (int i = 0; i < to_mix; i++) {
in[0] = internal_buffer[(i << 2) + 0];
in[1] = internal_buffer[(i << 2) + 1];
in[2] = internal_buffer[(i << 2) + 2];
in[3] = internal_buffer[(i << 2) + 3];
DO_FILTER(0);
DO_FILTER(1);
DO_FILTER(2);
DO_FILTER(3);
p_buffer[(i << 2) + 0] = ((in[0] >> 16) * pan[0]);
p_buffer[(i << 2) + 1] = ((in[1] >> 16) * pan[1]);
p_buffer[(i << 2) + 2] = ((in[2] >> 16) * pan[2]);
p_buffer[(i << 2) + 3] = ((in[3] >> 16) * pan[3]);
}
} break;
}
break;
} break;
case 6: {
} break;
}
p_buffer += to_mix * internal_buffer_channels;
todo -= to_mix;
}
}
return true;
}
void SpatialSoundServerSW::update(float p_delta) {
List<ActiveVoice> to_disable;
for (Set<ActiveVoice>::Element *E = active_voices.front(); E; E = E->next()) {
Source *source = E->get().source;
int voice = E->get().voice;
if (voice != VOICE_IS_STREAM) {
Source::Voice &v = source->voices[voice];
ERR_CONTINUE(!v.active && !v.restart); // likely a bug...
}
//this could be optimized at some point... am not sure
Space *space = space_owner.get(source->space);
Room *room = room_owner.get(space->default_room);
int max_level = -0x80000000;
int rooms_culled = space->octree.cull_point(source->transform.origin, cull_rooms, MAX_CULL_ROOMS);
for (int i = 0; i < rooms_culled; i++) {
Room *r = cull_rooms[i];
ERR_CONTINUE(r->bounds.is_empty()); // how did this happen??
if (r->level <= max_level) //ignore optimization (level too low)
continue;
Vector3 local_point = r->inverse_transform.xform(source->transform.origin);
if (!r->bounds.point_is_inside(local_point))
continue;
room = r;
max_level = r->level;
}
//compute mixing weights (support for multiple listeners in the same output)
float total_distance = 0;
for (Set<RID>::Element *L = space->listeners.front(); L; L = L->next()) {
Listener *listener = listener_owner.get(L->get());
total_distance += listener->transform.origin.distance_to(source->transform.origin);
}
//compute spatialization variables, weighted according to distance
float volume_attenuation = 0.0;
float air_absorption_hf_cutoff = 0.0;
float air_absorption = 0.0;
float pitch_scale = 1.0;
Vector3 panning;
//print_line("listeners: "+itos(space->listeners.size()));
for (Set<RID>::Element *L = space->listeners.front(); L; L = L->next()) {
Listener *listener = listener_owner.get(L->get());
Vector3 rel_vector = listener->transform.xform_inv(source->transform.origin);
Vector3 source_rel_vector = source->transform.xform_inv(listener->transform.origin).normalized();
float distance = rel_vector.length();
float weight = distance / total_distance;
float pscale = 1.0;
float distance_scale = listener->params[LISTENER_PARAM_ATTENUATION_SCALE] * room->params[ROOM_PARAM_ATTENUATION_SCALE];
float distance_min = source->params[SOURCE_PARAM_ATTENUATION_MIN_DISTANCE] * distance_scale;
float distance_max = source->params[SOURCE_PARAM_ATTENUATION_MAX_DISTANCE] * distance_scale;
float attenuation_exp = source->params[SOURCE_PARAM_ATTENUATION_DISTANCE_EXP];
float attenuation = 1;
//print_line("DIST MIN: "+rtos(distance_min));
//print_line("DIST MAX: "+rtos(distance_max));
if (distance_max > 0) {
distance = CLAMP(distance, distance_min, distance_max);
attenuation = Math::pow(1.0 - ((distance - distance_min) / (distance_max - distance_min)), CLAMP(attenuation_exp, 0.001, 16));
}
float hf_attenuation_cutoff = room->params[ROOM_PARAM_ATTENUATION_HF_CUTOFF];
float hf_attenuation_exp = room->params[ROOM_PARAM_ATTENUATION_HF_RATIO_EXP];
float hf_attenuation_floor = room->params[ROOM_PARAM_ATTENUATION_HF_FLOOR_DB];
float absorption = Math::db2linear(Math::lerp(hf_attenuation_floor, 0, Math::pow(attenuation, hf_attenuation_exp)));
// source emission cone
float emission_deg = source->params[SOURCE_PARAM_EMISSION_CONE_DEGREES];
float emission_attdb = source->params[SOURCE_PARAM_EMISSION_CONE_ATTENUATION_DB];
absorption *= _get_attenuation(source_rel_vector.dot(Vector3(0, 0, -1)), emission_deg, emission_attdb);
Vector3 vpanning = rel_vector.normalized();
//listener stuff
{
// head cone
float reception_deg = listener->params[LISTENER_PARAM_RECEPTION_CONE_DEGREES];
float reception_attdb = listener->params[LISTENER_PARAM_RECEPTION_CONE_ATTENUATION_DB];
absorption *= _get_attenuation(vpanning.dot(Vector3(0, 0, -1)), reception_deg, reception_attdb);
// scale
attenuation *= Math::db2linear(listener->params[LISTENER_PARAM_VOLUME_SCALE_DB]);
pscale *= Math::db2linear(listener->params[LISTENER_PARAM_PITCH_SCALE]);
}
//add values
volume_attenuation += weight * attenuation; // plus other stuff i guess
air_absorption += weight * absorption;
air_absorption_hf_cutoff += weight * hf_attenuation_cutoff;
panning += vpanning * weight;
//pitch_scale+=pscale*weight;
}
RoomReverb reverb_room;
float reverb_send;
/* APPLY ROOM SETTINGS */
{
pitch_scale *= room->params[ROOM_PARAM_PITCH_SCALE];
volume_attenuation *= Math::db2linear(room->params[ROOM_PARAM_VOLUME_SCALE_DB]);
reverb_room = room->reverb;
reverb_send = Math::lerp(1.0, volume_attenuation, room->params[ROOM_PARAM_ATTENUATION_REVERB_SCALE]) * room->params[ROOM_PARAM_REVERB_SEND];
}
/* UPDATE VOICE & STREAM */
if (voice == VOICE_IS_STREAM) {
//update voice!!
source->stream_data.panning = panning;
source->stream_data.volume = volume_attenuation * Math::db2linear(source->params[SOURCE_PARAM_VOLUME_DB]);
source->stream_data.reverb = reverb_room;
source->stream_data.reverb_send = reverb_send;
source->stream_data.filter_gain = air_absorption;
source->stream_data.filter_cutoff = air_absorption_hf_cutoff;
if (!source->stream) //stream is gone bye bye
to_disable.push_back(ActiveVoice(source, voice)); // oh well..
} else if (voice >= 0) {
//update stream!!
Source::Voice &v = source->voices[voice];
if (v.restart)
AudioServer::get_singleton()->voice_play(v.voice_rid, v.sample_rid);
float volume_scale = Math::db2linear(v.volume_scale) * Math::db2linear(source->params[SOURCE_PARAM_VOLUME_DB]);
float volume = volume_attenuation * volume_scale;
reverb_send *= volume_scale;
int mix_rate = v.sample_mix_rate * v.pitch_scale * pitch_scale * source->params[SOURCE_PARAM_PITCH_SCALE];
if (mix_rate <= 0) {
ERR_PRINT("Invalid mix rate for voice (0) check for invalid pitch_scale param.");
to_disable.push_back(ActiveVoice(source, voice)); // oh well..
continue; //invalid mix rate, disabling
}
if (v.restart || v.last_volume != volume)
AudioServer::get_singleton()->voice_set_volume(v.voice_rid, volume);
if (v.restart || v.last_mix_rate != mix_rate)
AudioServer::get_singleton()->voice_set_mix_rate(v.voice_rid, mix_rate);
if (v.restart || v.last_filter_gain != air_absorption || v.last_filter_cutoff != air_absorption_hf_cutoff)
AudioServer::get_singleton()->voice_set_filter(v.voice_rid, AudioServer::FILTER_HIGH_SHELF, air_absorption_hf_cutoff, 1.0, air_absorption);
if (v.restart || v.last_panning != panning)
AudioServer::get_singleton()->voice_set_pan(v.voice_rid, panning.x, panning.y, panning.z);
if (v.restart || v.last_reverb_room != reverb_room || v.last_reverb_send != reverb_send)
AudioServer::get_singleton()->voice_set_reverb(v.voice_rid, AudioServer::ReverbRoomType(reverb_room), reverb_send);
v.last_volume = volume;
v.last_mix_rate = mix_rate;
v.last_filter_gain = air_absorption;
v.last_filter_cutoff = air_absorption_hf_cutoff;
v.last_panning = panning;
v.restart = false;
v.active = true;
if (!AudioServer::get_singleton()->voice_is_active(v.voice_rid))
to_disable.push_back(ActiveVoice(source, voice)); // oh well..
}
}
while (to_disable.size()) {
ActiveVoice av = to_disable.front()->get();
av.source->voices[av.voice].active = false;
av.source->voices[av.voice].restart = false;
active_voices.erase(av);
to_disable.pop_front();
}
}
void SpatialSoundServerSW::finish() {
AudioServer::get_singleton()->free(internal_audio_stream_rid);
memdelete(internal_audio_stream);
_clean_up_owner(&source_owner, "Source");
_clean_up_owner(&listener_owner, "Listener");
_clean_up_owner(&room_owner, "Room");
_clean_up_owner(&space_owner, "Space");
memdelete_arr(internal_buffer);
}
SpatialSoundServerSW::SpatialSoundServerSW() {
}
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