Using clang-tidy's `modernize-use-nullptr`. https://clang.llvm.org/extra/clang-tidy/checks/modernize-use-nullptr.html
202 lines
6.7 KiB
C++
202 lines
6.7 KiB
C++
/*************************************************************************/
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/* audio_stream_generator.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) 2007-2021 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2021 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_generator.h"
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void AudioStreamGenerator::set_mix_rate(float p_mix_rate) {
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mix_rate = p_mix_rate;
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}
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float AudioStreamGenerator::get_mix_rate() const {
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return mix_rate;
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}
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void AudioStreamGenerator::set_buffer_length(float p_seconds) {
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buffer_len = p_seconds;
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}
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float AudioStreamGenerator::get_buffer_length() const {
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return buffer_len;
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}
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Ref<AudioStreamPlayback> AudioStreamGenerator::instance_playback() {
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Ref<AudioStreamGeneratorPlayback> playback;
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playback.instance();
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playback->generator = this;
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int target_buffer_size = mix_rate * buffer_len;
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playback->buffer.resize(nearest_shift(target_buffer_size));
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playback->buffer.clear();
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return playback;
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}
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String AudioStreamGenerator::get_stream_name() const {
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return "UserFeed";
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}
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float AudioStreamGenerator::get_length() const {
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return 0;
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}
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void AudioStreamGenerator::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_mix_rate", "hz"), &AudioStreamGenerator::set_mix_rate);
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ClassDB::bind_method(D_METHOD("get_mix_rate"), &AudioStreamGenerator::get_mix_rate);
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ClassDB::bind_method(D_METHOD("set_buffer_length", "seconds"), &AudioStreamGenerator::set_buffer_length);
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ClassDB::bind_method(D_METHOD("get_buffer_length"), &AudioStreamGenerator::get_buffer_length);
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "mix_rate", PROPERTY_HINT_RANGE, "20,192000,1"), "set_mix_rate", "get_mix_rate");
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ADD_PROPERTY(PropertyInfo(Variant::REAL, "buffer_length", PROPERTY_HINT_RANGE, "0.01,10,0.01"), "set_buffer_length", "get_buffer_length");
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}
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AudioStreamGenerator::AudioStreamGenerator() {
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mix_rate = 44100;
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buffer_len = 0.5;
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}
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////////////////
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bool AudioStreamGeneratorPlayback::push_frame(const Vector2 &p_frame) {
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if (buffer.space_left() < 1) {
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return false;
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}
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AudioFrame f = p_frame;
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buffer.write(&f, 1);
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return true;
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}
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bool AudioStreamGeneratorPlayback::can_push_buffer(int p_frames) const {
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return buffer.space_left() >= p_frames;
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}
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bool AudioStreamGeneratorPlayback::push_buffer(const PoolVector2Array &p_frames) {
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int to_write = p_frames.size();
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if (buffer.space_left() < to_write) {
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return false;
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}
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PoolVector2Array::Read r = p_frames.read();
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if (sizeof(real_t) == 4) {
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//write directly
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buffer.write((const AudioFrame *)r.ptr(), to_write);
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} else {
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//convert from double
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AudioFrame buf[2048];
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int ofs = 0;
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while (to_write) {
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int w = MIN(to_write, 2048);
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for (int i = 0; i < w; i++) {
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buf[i] = r[i + ofs];
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}
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buffer.write(buf, w);
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ofs += w;
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to_write -= w;
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}
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}
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return true;
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}
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int AudioStreamGeneratorPlayback::get_frames_available() const {
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return buffer.space_left();
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}
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int AudioStreamGeneratorPlayback::get_skips() const {
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return skips;
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}
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void AudioStreamGeneratorPlayback::clear_buffer() {
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ERR_FAIL_COND(active);
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buffer.clear();
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mixed = 0;
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}
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void AudioStreamGeneratorPlayback::_mix_internal(AudioFrame *p_buffer, int p_frames) {
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int read_amount = buffer.data_left();
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if (p_frames < read_amount) {
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read_amount = p_frames;
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}
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buffer.read(p_buffer, read_amount);
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if (read_amount < p_frames) {
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//skipped, not ideal
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for (int i = read_amount; i < p_frames; i++) {
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p_buffer[i] = AudioFrame(0, 0);
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}
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skips++;
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}
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mixed += p_frames / generator->get_mix_rate();
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}
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float AudioStreamGeneratorPlayback::get_stream_sampling_rate() {
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return generator->get_mix_rate();
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}
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void AudioStreamGeneratorPlayback::start(float p_from_pos) {
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if (mixed == 0.0) {
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_begin_resample();
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}
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skips = 0;
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active = true;
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mixed = 0.0;
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}
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void AudioStreamGeneratorPlayback::stop() {
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active = false;
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}
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bool AudioStreamGeneratorPlayback::is_playing() const {
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return active; //always playing, can't be stopped
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}
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int AudioStreamGeneratorPlayback::get_loop_count() const {
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return 0;
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}
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float AudioStreamGeneratorPlayback::get_playback_position() const {
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return mixed;
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}
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void AudioStreamGeneratorPlayback::seek(float p_time) {
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//no seek possible
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}
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void AudioStreamGeneratorPlayback::_bind_methods() {
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ClassDB::bind_method(D_METHOD("push_frame", "frame"), &AudioStreamGeneratorPlayback::push_frame);
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ClassDB::bind_method(D_METHOD("can_push_buffer", "amount"), &AudioStreamGeneratorPlayback::can_push_buffer);
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ClassDB::bind_method(D_METHOD("push_buffer", "frames"), &AudioStreamGeneratorPlayback::push_buffer);
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ClassDB::bind_method(D_METHOD("get_frames_available"), &AudioStreamGeneratorPlayback::get_frames_available);
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ClassDB::bind_method(D_METHOD("get_skips"), &AudioStreamGeneratorPlayback::get_skips);
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ClassDB::bind_method(D_METHOD("clear_buffer"), &AudioStreamGeneratorPlayback::clear_buffer);
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}
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AudioStreamGeneratorPlayback::AudioStreamGeneratorPlayback() {
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generator = nullptr;
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skips = 0;
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active = false;
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mixed = 0;
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}
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