765 lines
24 KiB
C++
765 lines
24 KiB
C++
/*************************************************************************/
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/* audio_stream.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "audio_stream.h"
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#include "core/config/project_settings.h"
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#include "core/os/os.h"
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void AudioStreamPlayback::start(float p_from_pos) {
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if (GDVIRTUAL_CALL(_start, p_from_pos)) {
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return;
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}
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ERR_FAIL_MSG("AudioStreamPlayback::start unimplemented!");
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}
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void AudioStreamPlayback::stop() {
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if (GDVIRTUAL_CALL(_stop)) {
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return;
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}
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ERR_FAIL_MSG("AudioStreamPlayback::stop unimplemented!");
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}
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bool AudioStreamPlayback::is_playing() const {
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bool ret;
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if (GDVIRTUAL_CALL(_is_playing, ret)) {
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return ret;
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}
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ERR_FAIL_V_MSG(false, "AudioStreamPlayback::is_playing unimplemented!");
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}
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int AudioStreamPlayback::get_loop_count() const {
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int ret;
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if (GDVIRTUAL_CALL(_get_loop_count, ret)) {
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return ret;
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}
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return 0;
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}
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float AudioStreamPlayback::get_playback_position() const {
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float ret;
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if (GDVIRTUAL_CALL(_get_playback_position, ret)) {
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return ret;
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}
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ERR_FAIL_V_MSG(0, "AudioStreamPlayback::get_playback_position unimplemented!");
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}
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void AudioStreamPlayback::seek(float p_time) {
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if (GDVIRTUAL_CALL(_seek, p_time)) {
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return;
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}
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}
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int AudioStreamPlayback::mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) {
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int ret;
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if (GDVIRTUAL_CALL(_mix, p_buffer, p_rate_scale, p_frames, ret)) {
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return ret;
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}
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WARN_PRINT_ONCE("AudioStreamPlayback::mix unimplemented!");
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return 0;
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}
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void AudioStreamPlayback::_bind_methods() {
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GDVIRTUAL_BIND(_start, "from_pos")
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GDVIRTUAL_BIND(_stop)
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GDVIRTUAL_BIND(_is_playing)
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GDVIRTUAL_BIND(_get_loop_count)
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GDVIRTUAL_BIND(_get_playback_position)
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GDVIRTUAL_BIND(_seek, "position")
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GDVIRTUAL_BIND(_mix, "buffer", "rate_scale", "frames");
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}
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//////////////////////////////
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void AudioStreamPlaybackResampled::_begin_resample() {
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//clear cubic interpolation history
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internal_buffer[0] = AudioFrame(0.0, 0.0);
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internal_buffer[1] = AudioFrame(0.0, 0.0);
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internal_buffer[2] = AudioFrame(0.0, 0.0);
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internal_buffer[3] = AudioFrame(0.0, 0.0);
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//mix buffer
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_mix_internal(internal_buffer + 4, INTERNAL_BUFFER_LEN);
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mix_offset = 0;
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}
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int AudioStreamPlaybackResampled::mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) {
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float target_rate = AudioServer::get_singleton()->get_mix_rate();
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float playback_speed_scale = AudioServer::get_singleton()->get_playback_speed_scale();
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uint64_t mix_increment = uint64_t(((get_stream_sampling_rate() * p_rate_scale * playback_speed_scale) / double(target_rate)) * double(FP_LEN));
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int mixed_frames_total = p_frames;
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for (int i = 0; i < p_frames; i++) {
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uint32_t idx = CUBIC_INTERP_HISTORY + uint32_t(mix_offset >> FP_BITS);
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//standard cubic interpolation (great quality/performance ratio)
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//this used to be moved to a LUT for greater performance, but nowadays CPU speed is generally faster than memory.
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float mu = (mix_offset & FP_MASK) / float(FP_LEN);
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AudioFrame y0 = internal_buffer[idx - 3];
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AudioFrame y1 = internal_buffer[idx - 2];
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AudioFrame y2 = internal_buffer[idx - 1];
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AudioFrame y3 = internal_buffer[idx - 0];
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if (idx <= internal_buffer_end && idx >= internal_buffer_end && mixed_frames_total == p_frames) {
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// The internal buffer ends somewhere in this range, and we haven't yet recorded the number of good frames we have.
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mixed_frames_total = i;
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}
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float mu2 = mu * mu;
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AudioFrame a0 = 3 * y1 - 3 * y2 + y3 - y0;
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AudioFrame a1 = 2 * y0 - 5 * y1 + 4 * y2 - y3;
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AudioFrame a2 = y2 - y0;
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AudioFrame a3 = 2 * y1;
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p_buffer[i] = (a0 * mu * mu2 + a1 * mu2 + a2 * mu + a3) / 2;
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mix_offset += mix_increment;
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while ((mix_offset >> FP_BITS) >= INTERNAL_BUFFER_LEN) {
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internal_buffer[0] = internal_buffer[INTERNAL_BUFFER_LEN + 0];
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internal_buffer[1] = internal_buffer[INTERNAL_BUFFER_LEN + 1];
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internal_buffer[2] = internal_buffer[INTERNAL_BUFFER_LEN + 2];
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internal_buffer[3] = internal_buffer[INTERNAL_BUFFER_LEN + 3];
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if (is_playing()) {
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int mixed_frames = _mix_internal(internal_buffer + 4, INTERNAL_BUFFER_LEN);
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if (mixed_frames != INTERNAL_BUFFER_LEN) {
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// internal_buffer[mixed_frames] is the first frame of silence.
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internal_buffer_end = mixed_frames;
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} else {
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// The internal buffer does not contain the first frame of silence.
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internal_buffer_end = -1;
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}
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} else {
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//fill with silence, not playing
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for (int j = 0; j < INTERNAL_BUFFER_LEN; ++j) {
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internal_buffer[j + 4] = AudioFrame(0, 0);
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}
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}
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mix_offset -= (INTERNAL_BUFFER_LEN << FP_BITS);
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}
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}
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return mixed_frames_total;
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}
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////////////////////////////////
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Ref<AudioStreamPlayback> AudioStream::instance_playback() {
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Ref<AudioStreamPlayback> ret;
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if (GDVIRTUAL_CALL(_instance_playback, ret)) {
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return ret;
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}
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ERR_FAIL_V_MSG(Ref<AudioStreamPlayback>(), "Method must be implemented!");
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}
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String AudioStream::get_stream_name() const {
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String ret;
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if (GDVIRTUAL_CALL(_get_stream_name, ret)) {
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return ret;
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}
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return String();
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}
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float AudioStream::get_length() const {
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float ret;
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if (GDVIRTUAL_CALL(_get_length, ret)) {
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return ret;
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}
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return 0;
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}
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bool AudioStream::is_monophonic() const {
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bool ret;
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if (GDVIRTUAL_CALL(_is_monophonic, ret)) {
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return ret;
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}
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return true;
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}
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void AudioStream::_bind_methods() {
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ClassDB::bind_method(D_METHOD("get_length"), &AudioStream::get_length);
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ClassDB::bind_method(D_METHOD("is_monophonic"), &AudioStream::is_monophonic);
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ClassDB::bind_method(D_METHOD("instance_playback"), &AudioStream::instance_playback);
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GDVIRTUAL_BIND(_instance_playback);
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GDVIRTUAL_BIND(_get_stream_name);
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GDVIRTUAL_BIND(_get_length);
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GDVIRTUAL_BIND(_is_monophonic);
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}
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////////////////////////////////
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Ref<AudioStreamPlayback> AudioStreamMicrophone::instance_playback() {
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Ref<AudioStreamPlaybackMicrophone> playback;
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playback.instantiate();
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playbacks.insert(playback.ptr());
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playback->microphone = Ref<AudioStreamMicrophone>((AudioStreamMicrophone *)this);
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playback->active = false;
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return playback;
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}
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String AudioStreamMicrophone::get_stream_name() const {
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//if (audio_stream.is_valid()) {
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//return "Random: " + audio_stream->get_name();
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//}
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return "Microphone";
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}
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float AudioStreamMicrophone::get_length() const {
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return 0;
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}
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bool AudioStreamMicrophone::is_monophonic() const {
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return true;
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}
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void AudioStreamMicrophone::_bind_methods() {
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}
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AudioStreamMicrophone::AudioStreamMicrophone() {
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}
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int AudioStreamPlaybackMicrophone::_mix_internal(AudioFrame *p_buffer, int p_frames) {
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AudioDriver::get_singleton()->lock();
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Vector<int32_t> buf = AudioDriver::get_singleton()->get_input_buffer();
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unsigned int input_size = AudioDriver::get_singleton()->get_input_size();
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int mix_rate = AudioDriver::get_singleton()->get_mix_rate();
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unsigned int playback_delay = MIN(((50 * mix_rate) / 1000) * 2, buf.size() >> 1);
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#ifdef DEBUG_ENABLED
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unsigned int input_position = AudioDriver::get_singleton()->get_input_position();
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#endif
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int mixed_frames = p_frames;
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if (playback_delay > input_size) {
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for (int i = 0; i < p_frames; i++) {
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p_buffer[i] = AudioFrame(0.0f, 0.0f);
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}
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input_ofs = 0;
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} else {
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for (int i = 0; i < p_frames; i++) {
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if (input_size > input_ofs && (int)input_ofs < buf.size()) {
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float l = (buf[input_ofs++] >> 16) / 32768.f;
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if ((int)input_ofs >= buf.size()) {
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input_ofs = 0;
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}
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float r = (buf[input_ofs++] >> 16) / 32768.f;
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if ((int)input_ofs >= buf.size()) {
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input_ofs = 0;
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}
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p_buffer[i] = AudioFrame(l, r);
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} else {
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if (mixed_frames == p_frames) {
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mixed_frames = i;
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}
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p_buffer[i] = AudioFrame(0.0f, 0.0f);
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}
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}
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}
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#ifdef DEBUG_ENABLED
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if (input_ofs > input_position && (int)(input_ofs - input_position) < (p_frames * 2)) {
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print_verbose(String(get_class_name()) + " buffer underrun: input_position=" + itos(input_position) + " input_ofs=" + itos(input_ofs) + " input_size=" + itos(input_size));
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}
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#endif
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AudioDriver::get_singleton()->unlock();
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return mixed_frames;
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}
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int AudioStreamPlaybackMicrophone::mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) {
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return AudioStreamPlaybackResampled::mix(p_buffer, p_rate_scale, p_frames);
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}
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float AudioStreamPlaybackMicrophone::get_stream_sampling_rate() {
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return AudioDriver::get_singleton()->get_mix_rate();
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}
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void AudioStreamPlaybackMicrophone::start(float p_from_pos) {
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if (active) {
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return;
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}
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if (!GLOBAL_GET("audio/driver/enable_input")) {
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WARN_PRINT("Need to enable Project settings > Audio > Enable Audio Input option to use capturing.");
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return;
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}
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input_ofs = 0;
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if (AudioDriver::get_singleton()->capture_start() == OK) {
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active = true;
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_begin_resample();
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}
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}
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void AudioStreamPlaybackMicrophone::stop() {
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if (active) {
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AudioDriver::get_singleton()->capture_stop();
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active = false;
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}
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}
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bool AudioStreamPlaybackMicrophone::is_playing() const {
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return active;
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}
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int AudioStreamPlaybackMicrophone::get_loop_count() const {
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return 0;
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}
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float AudioStreamPlaybackMicrophone::get_playback_position() const {
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return 0;
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}
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void AudioStreamPlaybackMicrophone::seek(float p_time) {
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// Can't seek a microphone input
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}
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AudioStreamPlaybackMicrophone::~AudioStreamPlaybackMicrophone() {
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microphone->playbacks.erase(this);
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stop();
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}
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AudioStreamPlaybackMicrophone::AudioStreamPlaybackMicrophone() {
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}
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////////////////////////////////
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void AudioStreamRandomizer::add_stream(int p_index) {
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if (p_index < 0) {
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p_index = audio_stream_pool.size();
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}
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ERR_FAIL_COND(p_index > audio_stream_pool.size());
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PoolEntry entry{ nullptr, 1.0f };
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audio_stream_pool.insert(p_index, entry);
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emit_signal(SNAME("changed"));
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notify_property_list_changed();
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}
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void AudioStreamRandomizer::move_stream(int p_index_from, int p_index_to) {
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ERR_FAIL_COND(p_index_from < 0);
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ERR_FAIL_COND(p_index_from >= audio_stream_pool.size());
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ERR_FAIL_COND(p_index_to < 0);
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ERR_FAIL_COND(p_index_to > audio_stream_pool.size());
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audio_stream_pool.insert(p_index_to, audio_stream_pool[p_index_from]);
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// If 'from' is strictly after 'to' we need to increment the index by one because of the insertion.
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if (p_index_from > p_index_to) {
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p_index_from++;
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}
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audio_stream_pool.remove_at(p_index_from);
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emit_signal(SNAME("changed"));
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notify_property_list_changed();
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}
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void AudioStreamRandomizer::remove_stream(int p_index) {
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ERR_FAIL_COND(p_index < 0);
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ERR_FAIL_COND(p_index >= audio_stream_pool.size());
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audio_stream_pool.remove_at(p_index);
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emit_signal(SNAME("changed"));
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notify_property_list_changed();
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}
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void AudioStreamRandomizer::set_stream(int p_index, Ref<AudioStream> p_stream) {
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ERR_FAIL_COND(p_index < 0);
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ERR_FAIL_COND(p_index >= audio_stream_pool.size());
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audio_stream_pool.write[p_index].stream = p_stream;
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emit_signal(SNAME("changed"));
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}
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Ref<AudioStream> AudioStreamRandomizer::get_stream(int p_index) const {
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ERR_FAIL_COND_V(p_index < 0, nullptr);
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ERR_FAIL_COND_V(p_index >= audio_stream_pool.size(), nullptr);
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return audio_stream_pool[p_index].stream;
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}
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void AudioStreamRandomizer::set_stream_probability_weight(int p_index, float p_weight) {
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ERR_FAIL_COND(p_index < 0);
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ERR_FAIL_COND(p_index >= audio_stream_pool.size());
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audio_stream_pool.write[p_index].weight = p_weight;
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emit_signal(SNAME("changed"));
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}
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float AudioStreamRandomizer::get_stream_probability_weight(int p_index) const {
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ERR_FAIL_COND_V(p_index < 0, 0);
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ERR_FAIL_COND_V(p_index >= audio_stream_pool.size(), 0);
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return audio_stream_pool[p_index].weight;
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}
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void AudioStreamRandomizer::set_streams_count(int p_count) {
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audio_stream_pool.resize(p_count);
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}
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int AudioStreamRandomizer::get_streams_count() const {
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return audio_stream_pool.size();
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}
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void AudioStreamRandomizer::set_random_pitch(float p_pitch) {
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if (p_pitch < 1) {
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p_pitch = 1;
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}
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random_pitch_scale = p_pitch;
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}
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float AudioStreamRandomizer::get_random_pitch() const {
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return random_pitch_scale;
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}
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void AudioStreamRandomizer::set_random_volume_offset_db(float p_volume_offset_db) {
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if (p_volume_offset_db < 0) {
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p_volume_offset_db = 0;
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}
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random_volume_offset_db = p_volume_offset_db;
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}
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float AudioStreamRandomizer::get_random_volume_offset_db() const {
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return random_volume_offset_db;
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}
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void AudioStreamRandomizer::set_playback_mode(PlaybackMode p_playback_mode) {
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playback_mode = p_playback_mode;
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}
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AudioStreamRandomizer::PlaybackMode AudioStreamRandomizer::get_playback_mode() const {
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return playback_mode;
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}
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Ref<AudioStreamPlayback> AudioStreamRandomizer::instance_playback_random() {
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Ref<AudioStreamPlaybackRandomizer> playback;
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playback.instantiate();
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playbacks.insert(playback.ptr());
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playback->randomizer = Ref<AudioStreamRandomizer>((AudioStreamRandomizer *)this);
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double total_weight = 0;
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Vector<PoolEntry> local_pool;
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for (const PoolEntry &entry : audio_stream_pool) {
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if (entry.stream.is_valid() && entry.weight > 0) {
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local_pool.push_back(entry);
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total_weight += entry.weight;
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}
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}
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if (local_pool.is_empty()) {
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return playback;
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}
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double chosen_cumulative_weight = Math::random(0.0, total_weight);
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double cumulative_weight = 0;
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for (PoolEntry &entry : local_pool) {
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cumulative_weight += entry.weight;
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if (cumulative_weight > chosen_cumulative_weight) {
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playback->playback = entry.stream->instance_playback();
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last_playback = entry.stream;
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break;
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}
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}
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if (playback->playback.is_null()) {
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// This indicates a floating point error. Take the last element.
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last_playback = local_pool[local_pool.size() - 1].stream;
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playback->playback = local_pool.write[local_pool.size() - 1].stream->instance_playback();
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}
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return playback;
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}
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Ref<AudioStreamPlayback> AudioStreamRandomizer::instance_playback_no_repeats() {
|
|
Ref<AudioStreamPlaybackRandomizer> playback;
|
|
|
|
double total_weight = 0;
|
|
Vector<PoolEntry> local_pool;
|
|
for (const PoolEntry &entry : audio_stream_pool) {
|
|
if (entry.stream == last_playback) {
|
|
continue;
|
|
}
|
|
if (entry.stream.is_valid() && entry.weight > 0) {
|
|
local_pool.push_back(entry);
|
|
total_weight += entry.weight;
|
|
}
|
|
}
|
|
if (local_pool.is_empty()) {
|
|
playback = instance_playback_random();
|
|
WARN_PRINT("Playback stream pool is too small to prevent repeats.");
|
|
return playback;
|
|
}
|
|
|
|
playback.instantiate();
|
|
playbacks.insert(playback.ptr());
|
|
playback->randomizer = Ref<AudioStreamRandomizer>((AudioStreamRandomizer *)this);
|
|
double chosen_cumulative_weight = Math::random(0.0, total_weight);
|
|
double cumulative_weight = 0;
|
|
for (PoolEntry &entry : local_pool) {
|
|
cumulative_weight += entry.weight;
|
|
if (cumulative_weight > chosen_cumulative_weight) {
|
|
last_playback = entry.stream;
|
|
playback->playback = entry.stream->instance_playback();
|
|
break;
|
|
}
|
|
}
|
|
if (playback->playback.is_null()) {
|
|
// This indicates a floating point error. Take the last element.
|
|
last_playback = local_pool[local_pool.size() - 1].stream;
|
|
playback->playback = local_pool.write[local_pool.size() - 1].stream->instance_playback();
|
|
}
|
|
return playback;
|
|
}
|
|
|
|
Ref<AudioStreamPlayback> AudioStreamRandomizer::instance_playback_sequential() {
|
|
Ref<AudioStreamPlaybackRandomizer> playback;
|
|
playback.instantiate();
|
|
playbacks.insert(playback.ptr());
|
|
playback->randomizer = Ref<AudioStreamRandomizer>((AudioStreamRandomizer *)this);
|
|
|
|
Vector<Ref<AudioStream>> local_pool;
|
|
for (const PoolEntry &entry : audio_stream_pool) {
|
|
if (entry.stream.is_null()) {
|
|
continue;
|
|
}
|
|
if (local_pool.find(entry.stream) != -1) {
|
|
WARN_PRINT("Duplicate stream in sequential playback pool");
|
|
continue;
|
|
}
|
|
local_pool.push_back(entry.stream);
|
|
}
|
|
if (local_pool.is_empty()) {
|
|
return playback;
|
|
}
|
|
bool found_last_stream = false;
|
|
for (Ref<AudioStream> &entry : local_pool) {
|
|
if (found_last_stream) {
|
|
last_playback = entry;
|
|
playback->playback = entry->instance_playback();
|
|
break;
|
|
}
|
|
if (entry == last_playback) {
|
|
found_last_stream = true;
|
|
}
|
|
}
|
|
if (playback->playback.is_null()) {
|
|
// Wrap around
|
|
last_playback = local_pool[0];
|
|
playback->playback = local_pool.write[0]->instance_playback();
|
|
}
|
|
return playback;
|
|
}
|
|
|
|
Ref<AudioStreamPlayback> AudioStreamRandomizer::instance_playback() {
|
|
switch (playback_mode) {
|
|
case PLAYBACK_RANDOM:
|
|
return instance_playback_random();
|
|
case PLAYBACK_RANDOM_NO_REPEATS:
|
|
return instance_playback_no_repeats();
|
|
case PLAYBACK_SEQUENTIAL:
|
|
return instance_playback_sequential();
|
|
default:
|
|
ERR_FAIL_V_MSG(nullptr, "Unhandled playback mode.");
|
|
}
|
|
}
|
|
|
|
String AudioStreamRandomizer::get_stream_name() const {
|
|
return "Randomizer";
|
|
}
|
|
|
|
float AudioStreamRandomizer::get_length() const {
|
|
return 0;
|
|
}
|
|
|
|
bool AudioStreamRandomizer::is_monophonic() const {
|
|
for (const PoolEntry &entry : audio_stream_pool) {
|
|
if (entry.stream.is_valid() && entry.stream->is_monophonic()) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool AudioStreamRandomizer::_get(const StringName &p_name, Variant &r_ret) const {
|
|
if (AudioStream::_get(p_name, r_ret)) {
|
|
return true;
|
|
}
|
|
Vector<String> components = String(p_name).split("/", true, 2);
|
|
if (components.size() == 2 && components[0].begins_with("stream_") && components[0].trim_prefix("stream_").is_valid_int()) {
|
|
int index = components[0].trim_prefix("stream_").to_int();
|
|
if (index < 0 || index >= (int)audio_stream_pool.size()) {
|
|
return false;
|
|
}
|
|
|
|
if (components[1] == "stream") {
|
|
r_ret = get_stream(index);
|
|
return true;
|
|
} else if (components[1] == "weight") {
|
|
r_ret = get_stream_probability_weight(index);
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool AudioStreamRandomizer::_set(const StringName &p_name, const Variant &p_value) {
|
|
if (AudioStream::_set(p_name, p_value)) {
|
|
return true;
|
|
}
|
|
Vector<String> components = String(p_name).split("/", true, 2);
|
|
if (components.size() == 2 && components[0].begins_with("stream_") && components[0].trim_prefix("stream_").is_valid_int()) {
|
|
int index = components[0].trim_prefix("stream_").to_int();
|
|
if (index < 0 || index >= (int)audio_stream_pool.size()) {
|
|
return false;
|
|
}
|
|
|
|
if (components[1] == "stream") {
|
|
set_stream(index, p_value);
|
|
return true;
|
|
} else if (components[1] == "weight") {
|
|
set_stream_probability_weight(index, p_value);
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void AudioStreamRandomizer::_get_property_list(List<PropertyInfo> *p_list) const {
|
|
AudioStream::_get_property_list(p_list); // Define the trivial scalar properties.
|
|
p_list->push_back(PropertyInfo(Variant::NIL, "Streams", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_GROUP));
|
|
for (int i = 0; i < audio_stream_pool.size(); i++) {
|
|
p_list->push_back(PropertyInfo(Variant::OBJECT, vformat("stream_%d/stream", i), PROPERTY_HINT_RESOURCE_TYPE, "AudioStream"));
|
|
p_list->push_back(PropertyInfo(Variant::FLOAT, vformat("stream_%d/weight", i), PROPERTY_HINT_RANGE, "0,100,0.001,or_greater"));
|
|
}
|
|
}
|
|
|
|
void AudioStreamRandomizer::_bind_methods() {
|
|
ClassDB::bind_method(D_METHOD("add_stream", "index"), &AudioStreamRandomizer::add_stream);
|
|
ClassDB::bind_method(D_METHOD("move_stream", "index_from", "index_to"), &AudioStreamRandomizer::move_stream);
|
|
ClassDB::bind_method(D_METHOD("remove_stream", "index"), &AudioStreamRandomizer::remove_stream);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_stream", "index", "stream"), &AudioStreamRandomizer::set_stream);
|
|
ClassDB::bind_method(D_METHOD("get_stream", "index"), &AudioStreamRandomizer::get_stream);
|
|
ClassDB::bind_method(D_METHOD("set_stream_probability_weight", "index", "weight"), &AudioStreamRandomizer::set_stream_probability_weight);
|
|
ClassDB::bind_method(D_METHOD("get_stream_probability_weight", "index"), &AudioStreamRandomizer::get_stream_probability_weight);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_streams_count", "count"), &AudioStreamRandomizer::set_streams_count);
|
|
ClassDB::bind_method(D_METHOD("get_streams_count"), &AudioStreamRandomizer::get_streams_count);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_random_pitch", "scale"), &AudioStreamRandomizer::set_random_pitch);
|
|
ClassDB::bind_method(D_METHOD("get_random_pitch"), &AudioStreamRandomizer::get_random_pitch);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_random_volume_offset_db", "db_offset"), &AudioStreamRandomizer::set_random_volume_offset_db);
|
|
ClassDB::bind_method(D_METHOD("get_random_volume_offset_db"), &AudioStreamRandomizer::get_random_volume_offset_db);
|
|
|
|
ClassDB::bind_method(D_METHOD("set_playback_mode", "mode"), &AudioStreamRandomizer::set_playback_mode);
|
|
ClassDB::bind_method(D_METHOD("get_playback_mode"), &AudioStreamRandomizer::get_playback_mode);
|
|
|
|
ADD_ARRAY("streams", "stream_");
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT, "streams_count", PROPERTY_HINT_NONE, "", PROPERTY_USAGE_NO_EDITOR), "set_streams_count", "get_streams_count");
|
|
ADD_PROPERTY(PropertyInfo(Variant::INT, "playback_mode", PROPERTY_HINT_ENUM, "Random (Avoid Repeats),Random,Sequential"), "set_playback_mode", "get_playback_mode");
|
|
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "random_pitch", PROPERTY_HINT_RANGE, "1,16,0.01"), "set_random_pitch", "get_random_pitch");
|
|
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "random_volume_offset_db", PROPERTY_HINT_RANGE, "0,40,0"), "set_random_volume_offset_db", "get_random_volume_offset_db");
|
|
|
|
BIND_ENUM_CONSTANT(PLAYBACK_RANDOM_NO_REPEATS);
|
|
BIND_ENUM_CONSTANT(PLAYBACK_RANDOM);
|
|
BIND_ENUM_CONSTANT(PLAYBACK_SEQUENTIAL);
|
|
}
|
|
|
|
AudioStreamRandomizer::AudioStreamRandomizer() {
|
|
random_pitch_scale = 1.1;
|
|
random_volume_offset_db = 5;
|
|
}
|
|
|
|
void AudioStreamPlaybackRandomizer::start(float p_from_pos) {
|
|
playing = playback;
|
|
{
|
|
float range_from = 1.0 / randomizer->random_pitch_scale;
|
|
float range_to = randomizer->random_pitch_scale;
|
|
|
|
pitch_scale = range_from + Math::randf() * (range_to - range_from);
|
|
}
|
|
{
|
|
float range_from = -randomizer->random_volume_offset_db;
|
|
float range_to = randomizer->random_volume_offset_db;
|
|
|
|
float volume_offset_db = range_from + Math::randf() * (range_to - range_from);
|
|
volume_scale = Math::db2linear(volume_offset_db);
|
|
}
|
|
|
|
if (playing.is_valid()) {
|
|
playing->start(p_from_pos);
|
|
}
|
|
}
|
|
|
|
void AudioStreamPlaybackRandomizer::stop() {
|
|
if (playing.is_valid()) {
|
|
playing->stop();
|
|
}
|
|
}
|
|
|
|
bool AudioStreamPlaybackRandomizer::is_playing() const {
|
|
if (playing.is_valid()) {
|
|
return playing->is_playing();
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
int AudioStreamPlaybackRandomizer::get_loop_count() const {
|
|
if (playing.is_valid()) {
|
|
return playing->get_loop_count();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
float AudioStreamPlaybackRandomizer::get_playback_position() const {
|
|
if (playing.is_valid()) {
|
|
return playing->get_playback_position();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void AudioStreamPlaybackRandomizer::seek(float p_time) {
|
|
if (playing.is_valid()) {
|
|
playing->seek(p_time);
|
|
}
|
|
}
|
|
|
|
int AudioStreamPlaybackRandomizer::mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) {
|
|
if (playing.is_valid()) {
|
|
return playing->mix(p_buffer, p_rate_scale * pitch_scale, p_frames);
|
|
} else {
|
|
for (int i = 0; i < p_frames; i++) {
|
|
p_buffer[i] = AudioFrame(0, 0);
|
|
}
|
|
return p_frames;
|
|
}
|
|
}
|
|
|
|
AudioStreamPlaybackRandomizer::~AudioStreamPlaybackRandomizer() {
|
|
randomizer->playbacks.erase(this);
|
|
}
|
|
/////////////////////////////////////////////
|