302 lines
7.0 KiB
C++
302 lines
7.0 KiB
C++
#include "audio_player.h"
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void AudioPlayer::_mix_audio() {
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if (!stream_playback.is_valid()) {
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return;
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}
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if (!active) {
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return;
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}
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if (setseek>=0.0) {
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stream_playback->start(setseek);
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setseek=-1.0; //reset seek
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}
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int bus_index = AudioServer::get_singleton()->thread_find_bus_index(bus);
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//get data
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AudioFrame *buffer = mix_buffer.ptr();
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int buffer_size = mix_buffer.size();
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//mix
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stream_playback->mix(buffer,1.0,buffer_size);
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//multiply volume interpolating to avoid clicks if this changes
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float vol = Math::db2linear(mix_volume_db);
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float vol_inc = (Math::db2linear(volume_db) - vol)/float(buffer_size);
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for(int i=0;i<buffer_size;i++) {
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buffer[i]*=vol;
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vol+=vol_inc;
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}
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//set volume for next mix
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mix_volume_db = volume_db;
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AudioFrame * targets[3]={NULL,NULL,NULL};
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if (AudioServer::get_singleton()->get_speaker_mode()==AudioServer::SPEAKER_MODE_STEREO) {
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targets[0] = AudioServer::get_singleton()->thread_get_channel_mix_buffer(bus_index,0);
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} else {
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switch(mix_target) {
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case MIX_TARGET_STEREO: {
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targets[0]=AudioServer::get_singleton()->thread_get_channel_mix_buffer(bus_index,1);
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} break;
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case MIX_TARGET_SURROUND: {
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targets[0]=AudioServer::get_singleton()->thread_get_channel_mix_buffer(bus_index,1);
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targets[1]=AudioServer::get_singleton()->thread_get_channel_mix_buffer(bus_index,2);
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if (AudioServer::get_singleton()->get_speaker_mode()==AudioServer::SPEAKER_SURROUND_71) {
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targets[2]=AudioServer::get_singleton()->thread_get_channel_mix_buffer(bus_index,3);
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}
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} break;
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case MIX_TARGET_CENTER: {
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targets[0]=AudioServer::get_singleton()->thread_get_channel_mix_buffer(bus_index,0);
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} break;
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}
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}
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for(int c=0;c<3;c++) {
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if (!targets[c])
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break;
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for(int i=0;i<buffer_size;i++) {
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targets[c][i]+=buffer[i];
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}
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}
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}
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void AudioPlayer::_notification(int p_what) {
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if (p_what==NOTIFICATION_ENTER_TREE) {
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AudioServer::get_singleton()->add_callback(_mix_audios,this);
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if (autoplay && !get_tree()->is_editor_hint()) {
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play();
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}
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}
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if (p_what==NOTIFICATION_EXIT_TREE) {
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AudioServer::get_singleton()->remove_callback(_mix_audios,this);
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}
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}
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void AudioPlayer::set_stream(Ref<AudioStream> p_stream) {
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AudioServer::get_singleton()->lock();
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mix_buffer.resize(AudioServer::get_singleton()->thread_get_mix_buffer_size());
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if (stream_playback.is_valid()) {
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stream_playback.unref();
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stream.unref();
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active=false;
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setseek=-1;
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}
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stream=p_stream;
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stream_playback=p_stream->instance_playback();
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if (stream_playback.is_null()) {
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stream.unref();
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ERR_FAIL_COND(stream_playback.is_null());
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}
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AudioServer::get_singleton()->unlock();
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}
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Ref<AudioStream> AudioPlayer::get_stream() const {
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return stream;
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}
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void AudioPlayer::set_volume_db(float p_volume) {
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volume_db=p_volume;
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}
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float AudioPlayer::get_volume_db() const {
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return volume_db;
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}
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void AudioPlayer::play(float p_from_pos) {
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if (stream_playback.is_valid()) {
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mix_volume_db=volume_db; //reset volume ramp
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setseek=p_from_pos;
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active=true;
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}
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}
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void AudioPlayer::seek(float p_seconds) {
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if (stream_playback.is_valid()) {
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setseek=p_seconds;
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}
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}
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void AudioPlayer::stop() {
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if (stream_playback.is_valid()) {
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active=false;
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}
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}
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bool AudioPlayer::is_playing() const {
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if (stream_playback.is_valid()) {
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return active && stream_playback->is_playing();
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}
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return false;
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}
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float AudioPlayer::get_pos() {
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if (stream_playback.is_valid()) {
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return stream_playback->get_pos();
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}
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return 0;
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}
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void AudioPlayer::set_bus(const StringName& p_bus) {
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//if audio is active, must lock this
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AudioServer::get_singleton()->lock();
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bus=p_bus;
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AudioServer::get_singleton()->unlock();
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}
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StringName AudioPlayer::get_bus() const {
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for(int i=0;i<AudioServer::get_singleton()->get_bus_count();i++) {
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if (AudioServer::get_singleton()->get_bus_name(i)==bus) {
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return bus;
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}
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}
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return "Master";
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}
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void AudioPlayer::set_autoplay(bool p_enable) {
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autoplay=p_enable;
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}
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bool AudioPlayer::is_autoplay_enabled() {
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return autoplay;
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}
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void AudioPlayer::set_mix_target(MixTarget p_target) {
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mix_target=p_target;
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}
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AudioPlayer::MixTarget AudioPlayer::get_mix_target() const{
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return mix_target;
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}
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void AudioPlayer::_set_playing(bool p_enable) {
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if (p_enable)
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play();
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else
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stop();
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}
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bool AudioPlayer::_is_active() const {
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return active;
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}
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void AudioPlayer::_validate_property(PropertyInfo& property) const {
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if (property.name=="bus") {
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String options;
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for(int i=0;i<AudioServer::get_singleton()->get_bus_count();i++) {
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if (i>0)
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options+=",";
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String name = AudioServer::get_singleton()->get_bus_name(i);
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options+=name;
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}
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property.hint_string=options;
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}
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}
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void AudioPlayer::_bus_layout_changed() {
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_change_notify();
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}
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void AudioPlayer::_bind_methods() {
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ClassDB::bind_method(_MD("set_stream","stream:AudioStream"),&AudioPlayer::set_stream);
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ClassDB::bind_method(_MD("get_stream"),&AudioPlayer::get_stream);
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ClassDB::bind_method(_MD("set_volume_db","volume_db"),&AudioPlayer::set_volume_db);
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ClassDB::bind_method(_MD("get_volume_db"),&AudioPlayer::get_volume_db);
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ClassDB::bind_method(_MD("play","from_pos"),&AudioPlayer::play,DEFVAL(0.0));
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ClassDB::bind_method(_MD("seek","to_pos"),&AudioPlayer::seek);
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ClassDB::bind_method(_MD("stop"),&AudioPlayer::stop);
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ClassDB::bind_method(_MD("is_playing"),&AudioPlayer::is_playing);
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ClassDB::bind_method(_MD("get_pos"),&AudioPlayer::get_pos);
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ClassDB::bind_method(_MD("set_bus","bus"),&AudioPlayer::set_bus);
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ClassDB::bind_method(_MD("get_bus"),&AudioPlayer::get_bus);
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ClassDB::bind_method(_MD("set_autoplay","enable"),&AudioPlayer::set_autoplay);
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ClassDB::bind_method(_MD("is_autoplay_enabled"),&AudioPlayer::is_autoplay_enabled);
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ClassDB::bind_method(_MD("set_mix_target","mix_target"),&AudioPlayer::set_mix_target);
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ClassDB::bind_method(_MD("get_mix_target"),&AudioPlayer::get_mix_target);
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ClassDB::bind_method(_MD("_set_playing","enable"),&AudioPlayer::_set_playing);
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ClassDB::bind_method(_MD("_is_active"),&AudioPlayer::_is_active);
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ClassDB::bind_method(_MD("_bus_layout_changed"),&AudioPlayer::_bus_layout_changed);
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ADD_PROPERTY( PropertyInfo(Variant::OBJECT,"stream",PROPERTY_HINT_RESOURCE_TYPE,"AudioStream"),_SCS("set_stream"),_SCS("get_stream") );
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ADD_PROPERTY( PropertyInfo(Variant::REAL,"volume_db",PROPERTY_HINT_RANGE,"-80,24"),_SCS("set_volume_db"),_SCS("get_volume_db") );
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ADD_PROPERTY( PropertyInfo(Variant::BOOL,"playing",PROPERTY_HINT_NONE,"",PROPERTY_USAGE_EDITOR),_SCS("_set_playing"),_SCS("_is_active" ));
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ADD_PROPERTY( PropertyInfo(Variant::BOOL,"autoplay"),_SCS("set_autoplay"),_SCS("is_autoplay_enabled") );
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ADD_PROPERTY( PropertyInfo(Variant::INT,"mix_target",PROPERTY_HINT_ENUM,"Stereo,Surround,Center"),_SCS("set_mix_target"),_SCS("get_mix_target"));
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ADD_PROPERTY( PropertyInfo(Variant::STRING,"bus",PROPERTY_HINT_ENUM,""),_SCS("set_bus"),_SCS("get_bus"));
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}
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AudioPlayer::AudioPlayer() {
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mix_volume_db=0;
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volume_db=0;
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autoplay=false;
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setseek=-1;
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active=false;
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mix_target=MIX_TARGET_STEREO;
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AudioServer::get_singleton()->connect("bus_layout_changed",this,"_bus_layout_changed");
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}
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AudioPlayer::~AudioPlayer() {
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}
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