godot/scene/audio/audio_stream_player_internal.cpp

322 lines
11 KiB
C++

/**************************************************************************/
/* audio_stream_player_internal.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_internal.h"
#include "scene/main/node.h"
#include "scene/scene_string_names.h"
#include "servers/audio/audio_stream.h"
void AudioStreamPlayerInternal::_set_process(bool p_enabled) {
if (physical) {
node->set_physics_process_internal(p_enabled);
} else {
node->set_process(p_enabled);
}
}
void AudioStreamPlayerInternal::_update_stream_parameters() {
if (stream.is_null()) {
return;
}
List<AudioStream::Parameter> parameters;
stream->get_parameter_list(&parameters);
for (const AudioStream::Parameter &K : parameters) {
const PropertyInfo &pi = K.property;
StringName key = PARAM_PREFIX + pi.name;
if (!playback_parameters.has(key)) {
ParameterData pd;
pd.path = pi.name;
pd.value = K.default_value;
playback_parameters.insert(key, pd);
}
}
}
void AudioStreamPlayerInternal::process() {
Vector<Ref<AudioStreamPlayback>> playbacks_to_remove;
for (Ref<AudioStreamPlayback> &playback : stream_playbacks) {
if (playback.is_valid() && !AudioServer::get_singleton()->is_playback_active(playback) && !AudioServer::get_singleton()->is_playback_paused(playback)) {
playbacks_to_remove.push_back(playback);
}
}
// Now go through and remove playbacks that have finished. Removing elements from a Vector in a range based for is asking for trouble.
for (Ref<AudioStreamPlayback> &playback : playbacks_to_remove) {
stream_playbacks.erase(playback);
}
if (!playbacks_to_remove.is_empty() && stream_playbacks.is_empty()) {
// This node is no longer actively playing audio.
active.clear();
_set_process(false);
}
if (!playbacks_to_remove.is_empty()) {
node->emit_signal(SNAME("finished"));
}
}
void AudioStreamPlayerInternal::ensure_playback_limit() {
while (stream_playbacks.size() > max_polyphony) {
AudioServer::get_singleton()->stop_playback_stream(stream_playbacks[0]);
stream_playbacks.remove_at(0);
}
}
void AudioStreamPlayerInternal::notification(int p_what) {
switch (p_what) {
case Node::NOTIFICATION_ENTER_TREE: {
if (autoplay && !Engine::get_singleton()->is_editor_hint()) {
play_callable.call(0.0);
}
set_stream_paused(!node->can_process());
} break;
case Node::NOTIFICATION_EXIT_TREE: {
set_stream_paused(true);
} break;
case Node::NOTIFICATION_INTERNAL_PROCESS: {
process();
} break;
case Node::NOTIFICATION_PREDELETE: {
for (Ref<AudioStreamPlayback> &playback : stream_playbacks) {
AudioServer::get_singleton()->stop_playback_stream(playback);
}
stream_playbacks.clear();
} break;
case Node::NOTIFICATION_PAUSED: {
if (!node->can_process()) {
// Node can't process so we start fading out to silence
set_stream_paused(true);
}
} break;
case Node::NOTIFICATION_UNPAUSED: {
set_stream_paused(false);
} break;
}
}
Ref<AudioStreamPlayback> AudioStreamPlayerInternal::play_basic() {
Ref<AudioStreamPlayback> stream_playback;
if (stream.is_null()) {
return stream_playback;
}
ERR_FAIL_COND_V_MSG(!node->is_inside_tree(), stream_playback, "Playback can only happen when a node is inside the scene tree");
if (stream->is_monophonic() && is_playing()) {
stop();
}
stream_playback = stream->instantiate_playback();
ERR_FAIL_COND_V_MSG(stream_playback.is_null(), stream_playback, "Failed to instantiate playback.");
for (const KeyValue<StringName, ParameterData> &K : playback_parameters) {
stream_playback->set_parameter(K.value.path, K.value.value);
}
stream_playbacks.push_back(stream_playback);
active.set();
_set_process(true);
return stream_playback;
}
void AudioStreamPlayerInternal::set_stream_paused(bool p_pause) {
// TODO this does not have perfect recall, fix that maybe? If there are zero playbacks registered with the AudioServer, this bool isn't persisted.
for (Ref<AudioStreamPlayback> &playback : stream_playbacks) {
AudioServer::get_singleton()->set_playback_paused(playback, p_pause);
}
}
bool AudioStreamPlayerInternal::get_stream_paused() const {
// There's currently no way to pause some playback streams but not others. Check the first and don't bother looking at the rest.
if (!stream_playbacks.is_empty()) {
return AudioServer::get_singleton()->is_playback_paused(stream_playbacks[0]);
}
return false;
}
void AudioStreamPlayerInternal::validate_property(PropertyInfo &p_property) const {
if (p_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;
}
p_property.hint_string = options;
}
}
bool AudioStreamPlayerInternal::set(const StringName &p_name, const Variant &p_value) {
ParameterData *pd = playback_parameters.getptr(p_name);
if (!pd) {
return false;
}
pd->value = p_value;
for (Ref<AudioStreamPlayback> &playback : stream_playbacks) {
playback->set_parameter(pd->path, pd->value);
}
return true;
}
bool AudioStreamPlayerInternal::get(const StringName &p_name, Variant &r_ret) const {
const ParameterData *pd = playback_parameters.getptr(p_name);
if (!pd) {
return false;
}
r_ret = pd->value;
return true;
}
void AudioStreamPlayerInternal::get_property_list(List<PropertyInfo> *p_list) const {
if (stream.is_null()) {
return;
}
List<AudioStream::Parameter> parameters;
stream->get_parameter_list(&parameters);
for (const AudioStream::Parameter &K : parameters) {
PropertyInfo pi = K.property;
pi.name = PARAM_PREFIX + pi.name;
const ParameterData *pd = playback_parameters.getptr(pi.name);
if (pd && pd->value == K.default_value) {
pi.usage &= ~PROPERTY_USAGE_STORAGE;
}
p_list->push_back(pi);
}
}
void AudioStreamPlayerInternal::set_stream(Ref<AudioStream> p_stream) {
if (stream.is_valid()) {
stream->disconnect(SNAME("parameter_list_changed"), callable_mp(this, &AudioStreamPlayerInternal::_update_stream_parameters));
}
stop();
stream = p_stream;
_update_stream_parameters();
if (stream.is_valid()) {
stream->connect(SNAME("parameter_list_changed"), callable_mp(this, &AudioStreamPlayerInternal::_update_stream_parameters));
}
node->notify_property_list_changed();
}
void AudioStreamPlayerInternal::seek(float p_seconds) {
if (is_playing()) {
stop();
play_callable.call(p_seconds);
}
}
void AudioStreamPlayerInternal::stop() {
for (Ref<AudioStreamPlayback> &playback : stream_playbacks) {
AudioServer::get_singleton()->stop_playback_stream(playback);
}
stream_playbacks.clear();
active.clear();
_set_process(false);
}
bool AudioStreamPlayerInternal::is_playing() const {
for (const Ref<AudioStreamPlayback> &playback : stream_playbacks) {
if (AudioServer::get_singleton()->is_playback_active(playback)) {
return true;
}
}
return false;
}
float AudioStreamPlayerInternal::get_playback_position() {
// Return the playback position of the most recently started playback stream.
if (!stream_playbacks.is_empty()) {
return AudioServer::get_singleton()->get_playback_position(stream_playbacks[stream_playbacks.size() - 1]);
}
return 0;
}
void AudioStreamPlayerInternal::set_playing(bool p_enable) {
if (p_enable) {
play_callable.call(0.0);
} else {
stop();
}
}
bool AudioStreamPlayerInternal::is_active() const {
return active.is_set();
}
void AudioStreamPlayerInternal::set_pitch_scale(float p_pitch_scale) {
ERR_FAIL_COND(p_pitch_scale <= 0.0);
pitch_scale = p_pitch_scale;
for (Ref<AudioStreamPlayback> &playback : stream_playbacks) {
AudioServer::get_singleton()->set_playback_pitch_scale(playback, pitch_scale);
}
}
void AudioStreamPlayerInternal::set_max_polyphony(int p_max_polyphony) {
if (p_max_polyphony > 0) {
max_polyphony = p_max_polyphony;
}
}
bool AudioStreamPlayerInternal::has_stream_playback() {
return !stream_playbacks.is_empty();
}
Ref<AudioStreamPlayback> AudioStreamPlayerInternal::get_stream_playback() {
ERR_FAIL_COND_V_MSG(stream_playbacks.is_empty(), Ref<AudioStreamPlayback>(), "Player is inactive. Call play() before requesting get_stream_playback().");
return stream_playbacks[stream_playbacks.size() - 1];
}
StringName AudioStreamPlayerInternal::get_bus() const {
const String bus_name = bus;
for (int i = 0; i < AudioServer::get_singleton()->get_bus_count(); i++) {
if (AudioServer::get_singleton()->get_bus_name(i) == bus_name) {
return bus;
}
}
return SceneStringNames::get_singleton()->Master;
}
AudioStreamPlayerInternal::AudioStreamPlayerInternal(Node *p_node, const Callable &p_play_callable, bool p_physical) {
node = p_node;
play_callable = p_play_callable;
physical = p_physical;
bus = SceneStringNames::get_singleton()->Master;
AudioServer::get_singleton()->connect("bus_layout_changed", callable_mp((Object *)node, &Object::notify_property_list_changed));
AudioServer::get_singleton()->connect("bus_renamed", callable_mp((Object *)node, &Object::notify_property_list_changed).unbind(3));
}