virtualx-engine/scene/2d/audio_stream_player_2d.cpp
Rémi Verschelde 1426cd3b3a
One Copyright Update to rule them all
As many open source projects have started doing it, we're removing the
current year from the copyright notice, so that we don't need to bump
it every year.

It seems like only the first year of publication is technically
relevant for copyright notices, and even that seems to be something
that many companies stopped listing altogether (in a version controlled
codebase, the commits are a much better source of date of publication
than a hardcoded copyright statement).

We also now list Godot Engine contributors first as we're collectively
the current maintainers of the project, and we clarify that the
"exclusive" copyright of the co-founders covers the timespan before
opensourcing (their further contributions are included as part of Godot
Engine contributors).

Also fixed "cf." Frenchism - it's meant as "refer to / see".

Backported from #70885.
2023-01-10 15:26:54 +01:00

556 lines
18 KiB
C++

/**************************************************************************/
/* audio_stream_player_2d.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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 "audio_stream_player_2d.h"
#include "core/engine.h"
#include "core/project_settings.h"
#include "scene/2d/area_2d.h"
#include "scene/2d/listener_2d.h"
#include "scene/main/viewport.h"
void AudioStreamPlayer2D::_mix_audio() {
if (!stream_playback.is_valid() || !active.is_set() ||
(stream_paused && !stream_paused_fade_out)) {
return;
}
if (setseek.get() >= 0.0) {
stream_playback->start(setseek.get());
setseek.set(-1.0); //reset seek
}
//get data
AudioFrame *buffer = mix_buffer.ptrw();
int buffer_size = mix_buffer.size();
if (stream_paused_fade_out) {
// Short fadeout ramp
buffer_size = MIN(buffer_size, 128);
}
stream_playback->mix(buffer, pitch_scale, buffer_size);
//write all outputs
int oc = output_count.get();
for (int i = 0; i < oc; i++) {
Output current = outputs[i];
//see if current output exists, to keep volume ramp
bool found = false;
for (int j = i; j < prev_output_count; j++) {
if (prev_outputs[j].viewport == current.viewport) {
if (j != i) {
SWAP(prev_outputs[j], prev_outputs[i]);
}
found = true;
break;
}
}
if (!found) {
//create new if was not used before
if (prev_output_count < MAX_OUTPUTS) {
prev_outputs[prev_output_count] = prev_outputs[i]; //may be owned by another viewport
prev_output_count++;
}
prev_outputs[i] = current;
}
//mix!
AudioFrame target_volume = stream_paused_fade_out ? AudioFrame(0.f, 0.f) : current.vol;
AudioFrame vol_prev = stream_paused_fade_in ? AudioFrame(0.f, 0.f) : prev_outputs[i].vol;
AudioFrame vol_inc = (target_volume - vol_prev) / float(buffer_size);
AudioFrame vol = vol_prev;
int cc = AudioServer::get_singleton()->get_channel_count();
if (cc == 1) {
if (!AudioServer::get_singleton()->thread_has_channel_mix_buffer(current.bus_index, 0)) {
continue; //may have been removed
}
AudioFrame *target = AudioServer::get_singleton()->thread_get_channel_mix_buffer(current.bus_index, 0);
for (int j = 0; j < buffer_size; j++) {
target[j] += buffer[j] * vol;
vol += vol_inc;
}
} else {
AudioFrame *targets[4];
bool valid = true;
for (int k = 0; k < cc; k++) {
if (!AudioServer::get_singleton()->thread_has_channel_mix_buffer(current.bus_index, k)) {
valid = false; //may have been removed
break;
}
targets[k] = AudioServer::get_singleton()->thread_get_channel_mix_buffer(current.bus_index, k);
}
if (!valid) {
continue;
}
for (int j = 0; j < buffer_size; j++) {
AudioFrame frame = buffer[j] * vol;
for (int k = 0; k < cc; k++) {
targets[k][j] += frame;
}
vol += vol_inc;
}
}
prev_outputs[i] = current;
}
prev_output_count = oc;
//stream is no longer active, disable this.
if (!stream_playback->is_playing()) {
active.clear();
}
output_ready.clear();
stream_paused_fade_in = false;
stream_paused_fade_out = false;
}
void AudioStreamPlayer2D::_notification(int p_what) {
if (p_what == NOTIFICATION_ENTER_TREE) {
AudioServer::get_singleton()->add_callback(_mix_audios, this);
if (autoplay && !Engine::get_singleton()->is_editor_hint()) {
play();
}
}
if (p_what == NOTIFICATION_EXIT_TREE) {
AudioServer::get_singleton()->remove_callback(_mix_audios, this);
}
if (p_what == NOTIFICATION_PAUSED) {
if (!can_process()) {
// Node can't process so we start fading out to silence
set_stream_paused(true);
}
}
if (p_what == NOTIFICATION_UNPAUSED) {
set_stream_paused(false);
}
if (p_what == NOTIFICATION_INTERNAL_PHYSICS_PROCESS) {
//update anything related to position first, if possible of course
if (!output_ready.is_set()) {
List<Viewport *> viewports;
Ref<World2D> world_2d = get_world_2d();
ERR_FAIL_COND(world_2d.is_null());
int new_output_count = 0;
Vector2 global_pos = get_global_position();
int bus_index = AudioServer::get_singleton()->thread_find_bus_index(bus);
//check if any area is diverting sound into a bus
Physics2DDirectSpaceState *space_state = Physics2DServer::get_singleton()->space_get_direct_state(world_2d->get_space());
Physics2DDirectSpaceState::ShapeResult sr[MAX_INTERSECT_AREAS];
int areas = space_state->intersect_point(global_pos, sr, MAX_INTERSECT_AREAS, Set<RID>(), area_mask, false, true);
for (int i = 0; i < areas; i++) {
Area2D *area2d = Object::cast_to<Area2D>(sr[i].collider);
if (!area2d) {
continue;
}
if (!area2d->is_overriding_audio_bus()) {
continue;
}
StringName bus_name = area2d->get_audio_bus_name();
bus_index = AudioServer::get_singleton()->thread_find_bus_index(bus_name);
break;
}
world_2d->get_viewport_list(&viewports);
for (List<Viewport *>::Element *E = viewports.front(); E; E = E->next()) {
Viewport *vp = E->get();
if (vp->is_audio_listener_2d()) {
//compute matrix to convert to screen
Vector2 screen_size = vp->get_visible_rect().size;
Vector2 listener_in_global;
Vector2 relative_to_listener;
Listener2D *listener = vp->get_listener_2d();
if (listener) {
listener_in_global = listener->get_global_position();
relative_to_listener = global_pos - listener_in_global;
} else {
Transform2D to_listener = vp->get_global_canvas_transform() * vp->get_canvas_transform();
listener_in_global = to_listener.affine_inverse().xform(screen_size * 0.5);
relative_to_listener = to_listener.xform(global_pos) - screen_size * 0.5;
}
float dist = global_pos.distance_to(listener_in_global); // Distance to listener, or screen if none.
if (dist > max_distance) {
continue; //can't hear this sound in this viewport
}
float multiplier = Math::pow(1.0f - dist / max_distance, attenuation);
multiplier *= Math::db2linear(volume_db); //also apply player volume!
float pan = relative_to_listener.x / screen_size.x;
// Don't let the panning effect extend (too far) beyond the screen.
pan = CLAMP(pan, -1, 1);
// Bake in a constant factor here to allow the project setting defaults for 2d and 3d to be normalized to 1.0.
pan *= panning_strength * cached_global_panning_strength * 0.5f;
pan = CLAMP(pan + 0.5, 0.0, 1.0);
float l = 1.0 - pan;
float r = pan;
outputs[new_output_count].vol = AudioFrame(l, r) * multiplier;
outputs[new_output_count].bus_index = bus_index;
outputs[new_output_count].viewport = vp; //keep pointer only for reference
new_output_count++;
if (new_output_count == MAX_OUTPUTS) {
break;
}
}
}
output_count.set(new_output_count);
output_ready.set();
}
//start playing if requested
if (setplay.get() >= 0.0) {
setseek.set(setplay.get());
active.set();
setplay.set(-1);
//do not update, this makes it easier to animate (will shut off otherwise)
//_change_notify("playing"); //update property in editor
}
//stop playing if no longer active
if (!active.is_set()) {
set_physics_process_internal(false);
//do not update, this makes it easier to animate (will shut off otherwise)
//_change_notify("playing"); //update property in editor
emit_signal("finished");
}
}
}
void AudioStreamPlayer2D::set_stream(Ref<AudioStream> p_stream) {
// Instancing audio streams can cause large memory allocations, do it prior to AudioServer::lock.
Ref<AudioStreamPlayback> pre_instanced_playback;
if (p_stream.is_valid()) {
pre_instanced_playback = p_stream->instance_playback();
}
AudioServer::get_singleton()->lock();
mix_buffer.resize(AudioServer::get_singleton()->thread_get_mix_buffer_size());
if (stream_playback.is_valid()) {
stream_playback.unref();
stream.unref();
active.clear();
setseek.set(-1);
}
if (p_stream.is_valid()) {
stream = p_stream;
stream_playback = pre_instanced_playback;
}
AudioServer::get_singleton()->unlock();
if (p_stream.is_valid() && stream_playback.is_null()) {
stream.unref();
}
}
Ref<AudioStream> AudioStreamPlayer2D::get_stream() const {
return stream;
}
void AudioStreamPlayer2D::set_volume_db(float p_volume) {
volume_db = p_volume;
}
float AudioStreamPlayer2D::get_volume_db() const {
return volume_db;
}
void AudioStreamPlayer2D::set_pitch_scale(float p_pitch_scale) {
ERR_FAIL_COND(p_pitch_scale <= 0.0);
pitch_scale = p_pitch_scale;
}
float AudioStreamPlayer2D::get_pitch_scale() const {
return pitch_scale;
}
void AudioStreamPlayer2D::play(float p_from_pos) {
if (!is_playing()) {
// Reset the prev_output_count if the stream is stopped
prev_output_count = 0;
}
if (stream_playback.is_valid()) {
setplay.set(p_from_pos);
output_ready.clear();
set_physics_process_internal(true);
}
}
void AudioStreamPlayer2D::seek(float p_seconds) {
if (stream_playback.is_valid()) {
setseek.set(p_seconds);
}
}
void AudioStreamPlayer2D::stop() {
if (stream_playback.is_valid()) {
active.clear();
set_physics_process_internal(false);
setplay.set(-1);
}
}
bool AudioStreamPlayer2D::is_playing() const {
if (stream_playback.is_valid()) {
return active.is_set() || setplay.get() >= 0;
}
return false;
}
float AudioStreamPlayer2D::get_playback_position() {
if (stream_playback.is_valid()) {
float ss = setseek.get();
if (ss >= 0.0) {
return ss;
}
return stream_playback->get_playback_position();
}
return 0;
}
void AudioStreamPlayer2D::set_bus(const StringName &p_bus) {
//if audio is active, must lock this
AudioServer::get_singleton()->lock();
bus = p_bus;
AudioServer::get_singleton()->unlock();
}
StringName AudioStreamPlayer2D::get_bus() const {
for (int i = 0; i < AudioServer::get_singleton()->get_bus_count(); i++) {
if (AudioServer::get_singleton()->get_bus_name(i) == bus) {
return bus;
}
}
return "Master";
}
void AudioStreamPlayer2D::set_autoplay(bool p_enable) {
autoplay = p_enable;
}
bool AudioStreamPlayer2D::is_autoplay_enabled() {
return autoplay;
}
void AudioStreamPlayer2D::_set_playing(bool p_enable) {
if (p_enable) {
play();
} else {
stop();
}
}
bool AudioStreamPlayer2D::_is_active() const {
return active.is_set();
}
void AudioStreamPlayer2D::_validate_property(PropertyInfo &property) const {
if (property.name == "bus") {
String options;
for (int i = 0; i < AudioServer::get_singleton()->get_bus_count(); i++) {
if (i > 0) {
options += ",";
}
String name = AudioServer::get_singleton()->get_bus_name(i);
options += name;
}
property.hint_string = options;
}
}
void AudioStreamPlayer2D::_bus_layout_changed() {
_change_notify();
}
void AudioStreamPlayer2D::set_max_distance(float p_pixels) {
ERR_FAIL_COND(p_pixels <= 0.0);
max_distance = p_pixels;
}
float AudioStreamPlayer2D::get_max_distance() const {
return max_distance;
}
void AudioStreamPlayer2D::set_attenuation(float p_curve) {
attenuation = p_curve;
}
float AudioStreamPlayer2D::get_attenuation() const {
return attenuation;
}
void AudioStreamPlayer2D::set_area_mask(uint32_t p_mask) {
area_mask = p_mask;
}
uint32_t AudioStreamPlayer2D::get_area_mask() const {
return area_mask;
}
void AudioStreamPlayer2D::set_stream_paused(bool p_pause) {
if (p_pause != stream_paused) {
stream_paused = p_pause;
stream_paused_fade_in = !p_pause;
stream_paused_fade_out = p_pause;
}
}
bool AudioStreamPlayer2D::get_stream_paused() const {
return stream_paused;
}
Ref<AudioStreamPlayback> AudioStreamPlayer2D::get_stream_playback() {
return stream_playback;
}
void AudioStreamPlayer2D::set_panning_strength(float p_panning_strength) {
ERR_FAIL_COND_MSG(p_panning_strength < 0, "Panning strength must be a positive number.");
panning_strength = p_panning_strength;
}
float AudioStreamPlayer2D::get_panning_strength() const {
return panning_strength;
}
void AudioStreamPlayer2D::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_stream", "stream"), &AudioStreamPlayer2D::set_stream);
ClassDB::bind_method(D_METHOD("get_stream"), &AudioStreamPlayer2D::get_stream);
ClassDB::bind_method(D_METHOD("set_volume_db", "volume_db"), &AudioStreamPlayer2D::set_volume_db);
ClassDB::bind_method(D_METHOD("get_volume_db"), &AudioStreamPlayer2D::get_volume_db);
ClassDB::bind_method(D_METHOD("set_pitch_scale", "pitch_scale"), &AudioStreamPlayer2D::set_pitch_scale);
ClassDB::bind_method(D_METHOD("get_pitch_scale"), &AudioStreamPlayer2D::get_pitch_scale);
ClassDB::bind_method(D_METHOD("play", "from_position"), &AudioStreamPlayer2D::play, DEFVAL(0.0));
ClassDB::bind_method(D_METHOD("seek", "to_position"), &AudioStreamPlayer2D::seek);
ClassDB::bind_method(D_METHOD("stop"), &AudioStreamPlayer2D::stop);
ClassDB::bind_method(D_METHOD("is_playing"), &AudioStreamPlayer2D::is_playing);
ClassDB::bind_method(D_METHOD("get_playback_position"), &AudioStreamPlayer2D::get_playback_position);
ClassDB::bind_method(D_METHOD("set_bus", "bus"), &AudioStreamPlayer2D::set_bus);
ClassDB::bind_method(D_METHOD("get_bus"), &AudioStreamPlayer2D::get_bus);
ClassDB::bind_method(D_METHOD("set_autoplay", "enable"), &AudioStreamPlayer2D::set_autoplay);
ClassDB::bind_method(D_METHOD("is_autoplay_enabled"), &AudioStreamPlayer2D::is_autoplay_enabled);
ClassDB::bind_method(D_METHOD("_set_playing", "enable"), &AudioStreamPlayer2D::_set_playing);
ClassDB::bind_method(D_METHOD("_is_active"), &AudioStreamPlayer2D::_is_active);
ClassDB::bind_method(D_METHOD("set_max_distance", "pixels"), &AudioStreamPlayer2D::set_max_distance);
ClassDB::bind_method(D_METHOD("get_max_distance"), &AudioStreamPlayer2D::get_max_distance);
ClassDB::bind_method(D_METHOD("set_attenuation", "curve"), &AudioStreamPlayer2D::set_attenuation);
ClassDB::bind_method(D_METHOD("get_attenuation"), &AudioStreamPlayer2D::get_attenuation);
ClassDB::bind_method(D_METHOD("set_area_mask", "mask"), &AudioStreamPlayer2D::set_area_mask);
ClassDB::bind_method(D_METHOD("get_area_mask"), &AudioStreamPlayer2D::get_area_mask);
ClassDB::bind_method(D_METHOD("set_stream_paused", "pause"), &AudioStreamPlayer2D::set_stream_paused);
ClassDB::bind_method(D_METHOD("get_stream_paused"), &AudioStreamPlayer2D::get_stream_paused);
ClassDB::bind_method(D_METHOD("set_panning_strength", "panning_strength"), &AudioStreamPlayer2D::set_panning_strength);
ClassDB::bind_method(D_METHOD("get_panning_strength"), &AudioStreamPlayer2D::get_panning_strength);
ClassDB::bind_method(D_METHOD("get_stream_playback"), &AudioStreamPlayer2D::get_stream_playback);
ClassDB::bind_method(D_METHOD("_bus_layout_changed"), &AudioStreamPlayer2D::_bus_layout_changed);
ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "stream", PROPERTY_HINT_RESOURCE_TYPE, "AudioStream"), "set_stream", "get_stream");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "volume_db", PROPERTY_HINT_RANGE, "-80,24"), "set_volume_db", "get_volume_db");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "pitch_scale", PROPERTY_HINT_RANGE, "0.01,4,0.01,or_greater"), "set_pitch_scale", "get_pitch_scale");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "playing", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_EDITOR), "_set_playing", "is_playing");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "autoplay"), "set_autoplay", "is_autoplay_enabled");
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "stream_paused", PROPERTY_HINT_NONE, ""), "set_stream_paused", "get_stream_paused");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "max_distance", PROPERTY_HINT_EXP_RANGE, "1,4096,1,or_greater"), "set_max_distance", "get_max_distance");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "attenuation", PROPERTY_HINT_EXP_EASING, "attenuation"), "set_attenuation", "get_attenuation");
ADD_PROPERTY(PropertyInfo(Variant::REAL, "panning_strength", PROPERTY_HINT_RANGE, "0,3,0.01,or_greater"), "set_panning_strength", "get_panning_strength");
ADD_PROPERTY(PropertyInfo(Variant::STRING, "bus", PROPERTY_HINT_ENUM, ""), "set_bus", "get_bus");
ADD_PROPERTY(PropertyInfo(Variant::INT, "area_mask", PROPERTY_HINT_LAYERS_2D_PHYSICS), "set_area_mask", "get_area_mask");
ADD_SIGNAL(MethodInfo("finished"));
}
AudioStreamPlayer2D::AudioStreamPlayer2D() {
volume_db = 0;
pitch_scale = 1.0;
autoplay = false;
setseek.set(-1);
prev_output_count = 0;
max_distance = 2000;
attenuation = 1;
setplay.set(-1);
area_mask = 1;
stream_paused = false;
stream_paused_fade_in = false;
stream_paused_fade_out = false;
AudioServer::get_singleton()->connect("bus_layout_changed", this, "_bus_layout_changed");
cached_global_panning_strength = ProjectSettings::get_singleton()->get("audio/2d_panning_strength");
}
AudioStreamPlayer2D::~AudioStreamPlayer2D() {
}