diff options
Diffstat (limited to 'scene/audio/audio_stream_player.cpp')
| -rw-r--r-- | scene/audio/audio_stream_player.cpp | 320 |
1 files changed, 136 insertions, 184 deletions
diff --git a/scene/audio/audio_stream_player.cpp b/scene/audio/audio_stream_player.cpp index 2853a8b9d9..0334ba667b 100644 --- a/scene/audio/audio_stream_player.cpp +++ b/scene/audio/audio_stream_player.cpp @@ -31,127 +31,40 @@ #include "audio_stream_player.h" #include "core/config/engine.h" - -void AudioStreamPlayer::_mix_to_bus(const AudioFrame *p_frames, int p_amount) { - int bus_index = AudioServer::get_singleton()->thread_find_bus_index(bus); - - AudioFrame *targets[4] = { nullptr, nullptr, nullptr, nullptr }; - - if (AudioServer::get_singleton()->get_speaker_mode() == AudioServer::SPEAKER_MODE_STEREO) { - targets[0] = AudioServer::get_singleton()->thread_get_channel_mix_buffer(bus_index, 0); - } else { - switch (mix_target) { - case MIX_TARGET_STEREO: { - targets[0] = AudioServer::get_singleton()->thread_get_channel_mix_buffer(bus_index, 0); - } break; - case MIX_TARGET_SURROUND: { - for (int i = 0; i < AudioServer::get_singleton()->get_channel_count(); i++) { - targets[i] = AudioServer::get_singleton()->thread_get_channel_mix_buffer(bus_index, i); - } - } break; - case MIX_TARGET_CENTER: { - targets[0] = AudioServer::get_singleton()->thread_get_channel_mix_buffer(bus_index, 1); - } break; - } - } - - for (int c = 0; c < 4; c++) { - if (!targets[c]) { - break; - } - for (int i = 0; i < p_amount; i++) { - targets[c][i] += p_frames[i]; - } - } -} - -void AudioStreamPlayer::_mix_internal(bool p_fadeout) { - //get data - AudioFrame *buffer = mix_buffer.ptrw(); - int buffer_size = mix_buffer.size(); - - if (p_fadeout) { - // Short fadeout ramp - buffer_size = MIN(buffer_size, 128); - } - - stream_playback->mix(buffer, pitch_scale, buffer_size); - - //multiply volume interpolating to avoid clicks if this changes - float target_volume = p_fadeout ? -80.0 : volume_db; - float vol = Math::db2linear(mix_volume_db); - float vol_inc = (Math::db2linear(target_volume) - vol) / float(buffer_size); - - for (int i = 0; i < buffer_size; i++) { - buffer[i] *= vol; - vol += vol_inc; - } - - //set volume for next mix - mix_volume_db = target_volume; - - _mix_to_bus(buffer, buffer_size); -} - -void AudioStreamPlayer::_mix_audio() { - if (use_fadeout) { - _mix_to_bus(fadeout_buffer.ptr(), fadeout_buffer.size()); - use_fadeout = false; - } - - if (!stream_playback.is_valid() || !active.is_set() || - (stream_paused && !stream_paused_fade)) { - return; - } - - if (stream_paused) { - if (stream_paused_fade && stream_playback->is_playing()) { - _mix_internal(true); - stream_paused_fade = false; - } - return; - } - - if (setstop.is_set()) { - _mix_internal(true); - stream_playback->stop(); - setstop.clear(); - } - - if (setseek.get() >= 0.0 && !stop_has_priority.is_set()) { - if (stream_playback->is_playing()) { - //fade out to avoid pops - _mix_internal(true); - } - - stream_playback->start(setseek.get()); - setseek.set(-1.0); //reset seek - mix_volume_db = volume_db; //reset ramp - } - - stop_has_priority.clear(); - - _mix_internal(false); -} +#include "core/math/audio_frame.h" +#include "servers/audio_server.h" void AudioStreamPlayer::_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_INTERNAL_PROCESS) { - if (!active.is_set() || (setseek.get() < 0 && !stream_playback->is_playing())) { + 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)) { + emit_signal(SNAME("finished")); + 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_internal(false); - emit_signal("finished"); } } if (p_what == NOTIFICATION_EXIT_TREE) { - AudioServer::get_singleton()->remove_callback(_mix_audios, this); + for (Ref<AudioStreamPlayback> &playback : stream_playbacks) { + AudioServer::get_singleton()->stop_playback_stream(playback); + } + stream_playbacks.clear(); } if (p_what == NOTIFICATION_PAUSED) { @@ -167,50 +80,8 @@ void AudioStreamPlayer::_notification(int p_what) { } void AudioStreamPlayer::set_stream(Ref<AudioStream> p_stream) { - AudioServer::get_singleton()->lock(); - - if (active.is_set() && stream_playback.is_valid() && !stream_paused) { - //changing streams out of the blue is not a great idea, but at least - //lets try to somehow avoid a click - - AudioFrame *buffer = fadeout_buffer.ptrw(); - int buffer_size = fadeout_buffer.size(); - - stream_playback->mix(buffer, pitch_scale, buffer_size); - - //multiply volume interpolating to avoid clicks if this changes - float target_volume = -80.0; - float vol = Math::db2linear(mix_volume_db); - float vol_inc = (Math::db2linear(target_volume) - vol) / float(buffer_size); - - for (int i = 0; i < buffer_size; i++) { - buffer[i] *= vol; - vol += vol_inc; - } - - use_fadeout = true; - } - - 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); - setstop.clear(); - } - - if (p_stream.is_valid()) { - stream = p_stream; - stream_playback = p_stream->instance_playback(); - } - - AudioServer::get_singleton()->unlock(); - - if (p_stream.is_valid() && stream_playback.is_null()) { - stream.unref(); - } + stop(); + stream = p_stream; } Ref<AudioStream> AudioStreamPlayer::get_stream() const { @@ -219,6 +90,11 @@ Ref<AudioStream> AudioStreamPlayer::get_stream() const { void AudioStreamPlayer::set_volume_db(float p_volume) { volume_db = p_volume; + + Vector<AudioFrame> volume_vector = _get_volume_vector(); + for (Ref<AudioStreamPlayback> &playback : stream_playbacks) { + AudioServer::get_singleton()->set_playback_all_bus_volumes_linear(playback, volume_vector); + } } float AudioStreamPlayer::get_volume_db() const { @@ -228,69 +104,94 @@ float AudioStreamPlayer::get_volume_db() const { void AudioStreamPlayer::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); + } } float AudioStreamPlayer::get_pitch_scale() const { return pitch_scale; } +void AudioStreamPlayer::set_max_polyphony(int p_max_polyphony) { + if (p_max_polyphony > 0) { + max_polyphony = p_max_polyphony; + } +} + +int AudioStreamPlayer::get_max_polyphony() const { + return max_polyphony; +} + void AudioStreamPlayer::play(float p_from_pos) { - if (stream_playback.is_valid()) { - //mix_volume_db = volume_db; do not reset volume ramp here, can cause clicks - setseek.set(p_from_pos); - stop_has_priority.clear(); - active.set(); - set_process_internal(true); + if (stream.is_null()) { + return; + } + ERR_FAIL_COND_MSG(!is_inside_tree(), "Playback can only happen when a node is inside the scene tree"); + if (stream->is_monophonic() && is_playing()) { + stop(); + } + Ref<AudioStreamPlayback> stream_playback = stream->instance_playback(); + ERR_FAIL_COND_MSG(stream_playback.is_null(), "Failed to instantiate playback."); + + AudioServer::get_singleton()->start_playback_stream(stream_playback, bus, _get_volume_vector(), p_from_pos); + stream_playbacks.push_back(stream_playback); + active.set(); + set_process_internal(true); + while (stream_playbacks.size() > max_polyphony) { + AudioServer::get_singleton()->stop_playback_stream(stream_playbacks[0]); + stream_playbacks.remove(0); } } void AudioStreamPlayer::seek(float p_seconds) { - if (stream_playback.is_valid()) { - setseek.set(p_seconds); + if (is_playing()) { + stop(); + play(p_seconds); } } void AudioStreamPlayer::stop() { - if (stream_playback.is_valid() && active.is_set()) { - setstop.set(); - stop_has_priority.set(); + for (Ref<AudioStreamPlayback> &playback : stream_playbacks) { + AudioServer::get_singleton()->stop_playback_stream(playback); } + stream_playbacks.clear(); + active.clear(); + set_process_internal(false); } bool AudioStreamPlayer::is_playing() const { - if (stream_playback.is_valid()) { - return active.is_set() && !setstop.is_set(); //&& stream_playback->is_playing(); + for (const Ref<AudioStreamPlayback> &playback : stream_playbacks) { + if (AudioServer::get_singleton()->is_playback_active(playback)) { + return true; + } } - return false; } float AudioStreamPlayer::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 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 AudioStreamPlayer::set_bus(const StringName &p_bus) { - //if audio is active, must lock this - AudioServer::get_singleton()->lock(); bus = p_bus; - AudioServer::get_singleton()->unlock(); + for (const Ref<AudioStreamPlayback> &playback : stream_playbacks) { + AudioServer::get_singleton()->set_playback_bus_exclusive(playback, p_bus, _get_volume_vector()); + } } StringName AudioStreamPlayer::get_bus() const { for (int i = 0; i < AudioServer::get_singleton()->get_bus_count(); i++) { - if (AudioServer::get_singleton()->get_bus_name(i) == bus) { + if (AudioServer::get_singleton()->get_bus_name(i) == String(bus)) { return bus; } } - return "Master"; + return SNAME("Master"); } void AudioStreamPlayer::set_autoplay(bool p_enable) { @@ -318,18 +219,64 @@ void AudioStreamPlayer::_set_playing(bool p_enable) { } bool AudioStreamPlayer::_is_active() const { - return active.is_set(); + for (const Ref<AudioStreamPlayback> &playback : stream_playbacks) { + if (AudioServer::get_singleton()->is_playback_active(playback)) { + return true; + } + } + return false; } void AudioStreamPlayer::set_stream_paused(bool p_pause) { - if (p_pause != stream_paused) { - stream_paused = p_pause; - stream_paused_fade = 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 AudioStreamPlayer::get_stream_paused() const { - return stream_paused; + // 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; +} + +Vector<AudioFrame> AudioStreamPlayer::_get_volume_vector() { + Vector<AudioFrame> volume_vector; + // We need at most four stereo pairs (for 7.1 systems). + volume_vector.resize(4); + + // Initialize the volume vector to zero. + for (AudioFrame &channel_volume_db : volume_vector) { + channel_volume_db = AudioFrame(0, 0); + } + + float volume_linear = Math::db2linear(volume_db); + + // Set the volume vector up according to the speaker mode and mix target. + // TODO do we need to scale the volume down when we output to more channels? + if (AudioServer::get_singleton()->get_speaker_mode() == AudioServer::SPEAKER_MODE_STEREO) { + volume_vector.write[0] = AudioFrame(volume_linear, volume_linear); + } else { + switch (mix_target) { + case MIX_TARGET_STEREO: { + volume_vector.write[0] = AudioFrame(volume_linear, volume_linear); + } break; + case MIX_TARGET_SURROUND: { + // TODO Make sure this is right. + volume_vector.write[0] = AudioFrame(volume_linear, volume_linear); + volume_vector.write[1] = AudioFrame(volume_linear, /* LFE= */ 1.0f); + volume_vector.write[2] = AudioFrame(volume_linear, volume_linear); + volume_vector.write[3] = AudioFrame(volume_linear, volume_linear); + } break; + case MIX_TARGET_CENTER: { + // TODO Make sure this is right. + volume_vector.write[1] = AudioFrame(volume_linear, /* LFE= */ 1.0f); + } break; + } + } + return volume_vector; } void AudioStreamPlayer::_validate_property(PropertyInfo &property) const { @@ -352,7 +299,10 @@ void AudioStreamPlayer::_bus_layout_changed() { } Ref<AudioStreamPlayback> AudioStreamPlayer::get_stream_playback() { - return stream_playback; + if (!stream_playbacks.is_empty()) { + return stream_playbacks[stream_playbacks.size() - 1]; + } + return nullptr; } void AudioStreamPlayer::_bind_methods() { @@ -387,6 +337,9 @@ void AudioStreamPlayer::_bind_methods() { ClassDB::bind_method(D_METHOD("set_stream_paused", "pause"), &AudioStreamPlayer::set_stream_paused); ClassDB::bind_method(D_METHOD("get_stream_paused"), &AudioStreamPlayer::get_stream_paused); + ClassDB::bind_method(D_METHOD("set_max_polyphony", "max_polyphony"), &AudioStreamPlayer::set_max_polyphony); + ClassDB::bind_method(D_METHOD("get_max_polyphony"), &AudioStreamPlayer::get_max_polyphony); + ClassDB::bind_method(D_METHOD("get_stream_playback"), &AudioStreamPlayer::get_stream_playback); ADD_PROPERTY(PropertyInfo(Variant::OBJECT, "stream", PROPERTY_HINT_RESOURCE_TYPE, "AudioStream"), "set_stream", "get_stream"); @@ -396,6 +349,7 @@ void AudioStreamPlayer::_bind_methods() { 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::INT, "mix_target", PROPERTY_HINT_ENUM, "Stereo,Surround,Center"), "set_mix_target", "get_mix_target"); + ADD_PROPERTY(PropertyInfo(Variant::INT, "max_polyphony", PROPERTY_HINT_NONE, ""), "set_max_polyphony", "get_max_polyphony"); ADD_PROPERTY(PropertyInfo(Variant::STRING_NAME, "bus", PROPERTY_HINT_ENUM, ""), "set_bus", "get_bus"); ADD_SIGNAL(MethodInfo("finished")); @@ -406,8 +360,6 @@ void AudioStreamPlayer::_bind_methods() { } AudioStreamPlayer::AudioStreamPlayer() { - fadeout_buffer.resize(512); - AudioServer::get_singleton()->connect("bus_layout_changed", callable_mp(this, &AudioStreamPlayer::_bus_layout_changed)); } |