diff options
Diffstat (limited to 'scene/2d/audio_stream_player_2d.cpp')
| -rw-r--r-- | scene/2d/audio_stream_player_2d.cpp | 463 |
1 files changed, 463 insertions, 0 deletions
diff --git a/scene/2d/audio_stream_player_2d.cpp b/scene/2d/audio_stream_player_2d.cpp new file mode 100644 index 0000000000..3d9e64ae79 --- /dev/null +++ b/scene/2d/audio_stream_player_2d.cpp @@ -0,0 +1,463 @@ + +#include "audio_stream_player_2d.h" +#include "scene/2d/area_2d.h" +#include "scene/main/viewport.h" +void AudioStreamPlayer2D::_mix_audio() { + + if (!stream_playback.is_valid()) { + return; + } + + if (!active) { + return; + } + + if (setseek >= 0.0) { + stream_playback->start(setseek); + setseek = -1.0; //reset seek + } + + //get data + AudioFrame *buffer = mix_buffer.ptr(); + int buffer_size = mix_buffer.size(); + + //mix + stream_playback->mix(buffer, 1.0, buffer_size); + + //write all outputs + for (int i = 0; i < output_count; 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 vol_inc = (current.vol - prev_outputs[i].vol) / float(buffer_size); + AudioFrame vol = current.vol; + + switch (AudioServer::get_singleton()->get_speaker_mode()) { + + case AudioServer::SPEAKER_MODE_STEREO: { + 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; + } + + } break; + case AudioServer::SPEAKER_SURROUND_51: { + + AudioFrame *targets[2] = { + AudioServer::get_singleton()->thread_get_channel_mix_buffer(current.bus_index, 1), + AudioServer::get_singleton()->thread_get_channel_mix_buffer(current.bus_index, 2), + }; + + for (int j = 0; j < buffer_size; j++) { + + AudioFrame frame = buffer[j] * vol; + targets[0][j] = frame; + targets[1][j] = frame; + vol += vol_inc; + } + + } break; + case AudioServer::SPEAKER_SURROUND_71: { + + AudioFrame *targets[3] = { + AudioServer::get_singleton()->thread_get_channel_mix_buffer(current.bus_index, 1), + AudioServer::get_singleton()->thread_get_channel_mix_buffer(current.bus_index, 2), + AudioServer::get_singleton()->thread_get_channel_mix_buffer(current.bus_index, 3) + }; + + for (int j = 0; j < buffer_size; j++) { + + AudioFrame frame = buffer[j] * vol; + targets[0][j] = frame; + targets[1][j] = frame; + targets[2][j] = frame; + vol += vol_inc; + } + + } break; + } + + prev_outputs[i] = current; + } + + prev_output_count = output_count; + + //stream is no longer active, disable this. + if (!stream_playback->is_playing()) { + active = false; + } + + output_ready = false; +} + +void AudioStreamPlayer2D::_notification(int p_what) { + + if (p_what == NOTIFICATION_ENTER_TREE) { + + AudioServer::get_singleton()->add_callback(_mix_audios, this); + if (autoplay && !get_tree()->is_editor_hint()) { + play(); + } + } + + if (p_what == NOTIFICATION_EXIT_TREE) { + + AudioServer::get_singleton()->remove_callback(_mix_audios, this); + } + + if (p_what == NOTIFICATION_INTERNAL_FIXED_PROCESS) { + + //update anything related to position first, if possible of course + + if (!output_ready) { + 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, Physics2DDirectSpaceState::TYPE_MASK_AREA); + + for (int i = 0; i < areas; i++) { + if (!sr[i].collider) + continue; + + Area2D *area2d = sr[i].collider->cast_to<Area2D>(); + if (!area2d) + continue; + + if (!area2d->is_overriding_audio_bus()) + continue; + + StringName bus_name = area2d->get_audio_bus(); + 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 + Transform2D to_screen = vp->get_global_canvas_transform() * vp->get_canvas_transform(); + Vector2 screen_size = vp->get_visible_rect().size; + + //screen in global is used for attenuation + Vector2 screen_in_global = to_screen.affine_inverse().xform(screen_size * 0.5); + + float dist = global_pos.distance_to(screen_in_global); //distance to screen center + + if (dist > max_distance) + continue; //cant 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! + + //point in screen is used for panning + Vector2 point_in_screen = to_screen.xform(global_pos); + + float pan = CLAMP(point_in_screen.x / screen_size.width, 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 = new_output_count; + output_ready = true; + } + + //start playing if requested + if (setplay >= 0.0) { + setseek = setplay; + active = true; + setplay = -1; + _change_notify("playing"); //update property in editor + } + + //stop playing if no longer active + if (!active) { + set_fixed_process_internal(false); + _change_notify("playing"); //update property in editor + } + } +} + +void AudioStreamPlayer2D::set_stream(Ref<AudioStream> p_stream) { + + ERR_FAIL_COND(!p_stream.is_valid()); + 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 = false; + setseek = -1; + } + + stream = p_stream; + stream_playback = p_stream->instance_playback(); + + if (stream_playback.is_null()) { + stream.unref(); + ERR_FAIL_COND(stream_playback.is_null()); + } + + AudioServer::get_singleton()->unlock(); +} + +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::play(float p_from_pos) { + + if (stream_playback.is_valid()) { + setplay = p_from_pos; + output_ready = false; + set_fixed_process_internal(true); + } +} + +void AudioStreamPlayer2D::seek(float p_seconds) { + + if (stream_playback.is_valid()) { + setseek = p_seconds; + } +} + +void AudioStreamPlayer2D::stop() { + + if (stream_playback.is_valid()) { + active = false; + set_fixed_process_internal(false); + setplay = -1; + } +} + +bool AudioStreamPlayer2D::is_playing() const { + + if (stream_playback.is_valid()) { + return active; // && stream_playback->is_playing(); + } + + return false; +} + +float AudioStreamPlayer2D::get_pos() { + + if (stream_playback.is_valid()) { + return stream_playback->get_pos(); + } + + 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; +} + +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::_bind_methods() { + + ClassDB::bind_method(D_METHOD("set_stream", "stream:AudioStream"), &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("play", "from_pos"), &AudioStreamPlayer2D::play, DEFVAL(0.0)); + ClassDB::bind_method(D_METHOD("seek", "to_pos"), &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_pos"), &AudioStreamPlayer2D::get_pos); + + 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("_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::BOOL, "playing", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_EDITOR), "_set_playing", "_is_active"); + ADD_PROPERTY(PropertyInfo(Variant::BOOL, "autoplay"), "set_autoplay", "is_autoplay_enabled"); + ADD_PROPERTY(PropertyInfo(Variant::REAL, "max_distance", PROPERTY_HINT_RANGE, "1,65536,1"), "set_max_distance", "get_max_distance"); + ADD_PROPERTY(PropertyInfo(Variant::REAL, "attenuation", PROPERTY_HINT_EXP_EASING), "set_attenuation", "get_attenuation"); + 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"); +} + +AudioStreamPlayer2D::AudioStreamPlayer2D() { + + volume_db = 0; + autoplay = false; + setseek = -1; + active = false; + output_count = 0; + prev_output_count = 0; + max_distance = 2000; + attenuation = 1; + setplay = -1; + output_ready = false; + area_mask = 1; + AudioServer::get_singleton()->connect("bus_layout_changed", this, "_bus_layout_changed"); +} + +AudioStreamPlayer2D::~AudioStreamPlayer2D() { +} |