144 lines
6 KiB
C++
144 lines
6 KiB
C++
/*************************************************************************/
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/* audio_effect_capture.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_effect_capture.h"
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bool AudioEffectCapture::can_get_buffer(int p_frames) const {
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return buffer.data_left() >= p_frames;
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}
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PoolVector2Array AudioEffectCapture::get_buffer(int p_frames) {
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ERR_FAIL_COND_V(!buffer_initialized, PoolVector2Array());
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ERR_FAIL_INDEX_V(p_frames, buffer.size(), PoolVector2Array());
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int data_left = buffer.data_left();
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if (data_left < p_frames || p_frames == 0) {
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return PoolVector2Array();
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}
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PoolVector2Array ret;
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ret.resize(p_frames);
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{
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PoolVector<AudioFrame> streaming_data;
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streaming_data.resize(p_frames);
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buffer.read(streaming_data.write().ptr(), p_frames);
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PoolVector2Array::Write retw = ret.write();
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for (int32_t i = 0; i < p_frames; i++) {
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retw[i] = Vector2(streaming_data[i].l, streaming_data[i].r);
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}
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}
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return ret;
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}
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void AudioEffectCapture::clear_buffer() {
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const int32_t data_left = buffer.data_left();
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buffer.advance_read(data_left);
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}
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void AudioEffectCapture::_bind_methods() {
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ClassDB::bind_method(D_METHOD("can_get_buffer", "frames"), &AudioEffectCapture::can_get_buffer);
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ClassDB::bind_method(D_METHOD("get_buffer", "frames"), &AudioEffectCapture::get_buffer);
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ClassDB::bind_method(D_METHOD("clear_buffer"), &AudioEffectCapture::clear_buffer);
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ClassDB::bind_method(D_METHOD("set_buffer_length", "buffer_length_seconds"), &AudioEffectCapture::set_buffer_length);
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ClassDB::bind_method(D_METHOD("get_buffer_length"), &AudioEffectCapture::get_buffer_length);
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ClassDB::bind_method(D_METHOD("get_frames_available"), &AudioEffectCapture::get_frames_available);
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ClassDB::bind_method(D_METHOD("get_discarded_frames"), &AudioEffectCapture::get_discarded_frames);
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ClassDB::bind_method(D_METHOD("get_buffer_length_frames"), &AudioEffectCapture::get_buffer_length_frames);
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ClassDB::bind_method(D_METHOD("get_pushed_frames"), &AudioEffectCapture::get_pushed_frames);
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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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Ref<AudioEffectInstance> AudioEffectCapture::instance() {
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if (!buffer_initialized) {
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float target_buffer_size = AudioServer::get_singleton()->get_mix_rate() * buffer_length_seconds;
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ERR_FAIL_COND_V(target_buffer_size <= 0 || target_buffer_size >= (1 << 27), Ref<AudioEffectInstance>());
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buffer.resize(nearest_shift((int)target_buffer_size));
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buffer_initialized = true;
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}
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clear_buffer();
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Ref<AudioEffectCaptureInstance> ins;
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ins.instance();
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ins->base = Ref<AudioEffectCapture>(this);
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return ins;
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}
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void AudioEffectCapture::set_buffer_length(float p_buffer_length_seconds) {
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ERR_FAIL_COND(buffer_initialized);
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buffer_length_seconds = p_buffer_length_seconds;
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}
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float AudioEffectCapture::get_buffer_length() {
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return buffer_length_seconds;
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}
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int AudioEffectCapture::get_frames_available() const {
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ERR_FAIL_COND_V(!buffer_initialized, 0);
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return buffer.data_left();
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}
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int64_t AudioEffectCapture::get_discarded_frames() const {
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return discarded_frames;
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}
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int AudioEffectCapture::get_buffer_length_frames() const {
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ERR_FAIL_COND_V(!buffer_initialized, 0);
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return buffer.size();
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}
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int64_t AudioEffectCapture::get_pushed_frames() const {
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return pushed_frames;
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}
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void AudioEffectCaptureInstance::process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) {
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RingBuffer<AudioFrame> &buffer = base->buffer;
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for (int i = 0; i < p_frame_count; i++) {
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p_dst_frames[i] = p_src_frames[i];
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}
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if (buffer.space_left() >= p_frame_count) {
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// Add incoming audio frames to the IO ring buffer
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int32_t ret = buffer.write(p_src_frames, p_frame_count);
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ERR_FAIL_COND_MSG(ret != p_frame_count, "Failed to add data to effect capture ring buffer despite sufficient space.");
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base->pushed_frames += p_frame_count;
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} else {
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base->discarded_frames += p_frame_count;
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}
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}
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bool AudioEffectCaptureInstance::process_silence() const {
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return true;
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}
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