265 lines
8.5 KiB
C++
265 lines
8.5 KiB
C++
/*************************************************************************/
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/* audio_effect_record.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) 2007-2018 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2018 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_record.h"
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void AudioEffectRecordInstance::process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) {
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if (!is_recording) {
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return;
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}
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//Add incoming audio frames to the IO ring buffer
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const AudioFrame *src = p_src_frames;
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AudioFrame *rb_buf = ring_buffer.ptrw();
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for (int i = 0; i < p_frame_count; i++) {
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rb_buf[ring_buffer_pos & ring_buffer_mask] = src[i];
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ring_buffer_pos++;
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}
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}
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bool AudioEffectRecordInstance::process_silence() const {
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return true;
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}
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void AudioEffectRecordInstance::_io_thread_process() {
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//Reset recorder status
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thread_active = true;
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ring_buffer_pos = 0;
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ring_buffer_read_pos = 0;
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//We start a new recording
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recording_data.resize(0); //Clear data completely and reset length
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is_recording = true;
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while (is_recording) {
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//Check: The current recording has been requested to stop
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if (is_recording && !base->recording_active) {
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is_recording = false;
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}
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//Case: Frames are remaining in the buffer
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if (ring_buffer_read_pos < ring_buffer_pos) {
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//Read from the buffer into recording_data
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_io_store_buffer();
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}
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//Case: The buffer is empty
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else if (is_recording) {
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//Wait to avoid too much busy-wait
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OS::get_singleton()->delay_usec(500);
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}
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}
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thread_active = false;
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}
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void AudioEffectRecordInstance::_io_store_buffer() {
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int to_read = ring_buffer_pos - ring_buffer_read_pos;
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AudioFrame *rb_buf = ring_buffer.ptrw();
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while (to_read) {
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AudioFrame buffered_frame = rb_buf[ring_buffer_read_pos & ring_buffer_mask];
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recording_data.push_back(buffered_frame.l);
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recording_data.push_back(buffered_frame.r);
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ring_buffer_read_pos++;
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to_read--;
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}
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}
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void AudioEffectRecordInstance::_thread_callback(void *_instance) {
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AudioEffectRecordInstance *aeri = reinterpret_cast<AudioEffectRecordInstance *>(_instance);
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aeri->_io_thread_process();
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}
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void AudioEffectRecordInstance::init() {
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io_thread = Thread::create(_thread_callback, this);
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}
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Ref<AudioEffectInstance> AudioEffectRecord::instance() {
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Ref<AudioEffectRecordInstance> ins;
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ins.instance();
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ins->base = Ref<AudioEffectRecord>(this);
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ins->is_recording = false;
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//Re-using the buffer size calculations from audio_effect_delay.cpp
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float ring_buffer_max_size = IO_BUFFER_SIZE_MS;
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ring_buffer_max_size /= 1000.0; //convert to seconds
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ring_buffer_max_size *= AudioServer::get_singleton()->get_mix_rate();
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int ringbuff_size = ring_buffer_max_size;
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int bits = 0;
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while (ringbuff_size > 0) {
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bits++;
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ringbuff_size /= 2;
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}
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ringbuff_size = 1 << bits;
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ins->ring_buffer_mask = ringbuff_size - 1;
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ins->ring_buffer_pos = 0;
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ins->ring_buffer.resize(ringbuff_size);
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ins->ring_buffer_read_pos = 0;
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ensure_thread_stopped();
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current_instance = ins;
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if (recording_active) {
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ins->init();
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}
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return ins;
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}
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void AudioEffectRecord::ensure_thread_stopped() {
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recording_active = false;
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if (current_instance != 0 && current_instance->thread_active) {
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Thread::wait_to_finish(current_instance->io_thread);
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}
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}
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void AudioEffectRecord::set_recording_active(bool p_record) {
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if (p_record) {
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if (current_instance == 0) {
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WARN_PRINTS("Recording should not be set as active before Godot has initialized.");
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recording_active = false;
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return;
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}
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ensure_thread_stopped();
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current_instance->init();
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}
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recording_active = p_record;
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}
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bool AudioEffectRecord::is_recording_active() const {
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return recording_active;
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}
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void AudioEffectRecord::set_format(AudioStreamSample::Format p_format) {
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format = p_format;
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}
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AudioStreamSample::Format AudioEffectRecord::get_format() const {
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return format;
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}
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Ref<AudioStreamSample> AudioEffectRecord::get_recording() const {
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AudioStreamSample::Format dst_format = format;
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bool stereo = true; //forcing mono is not implemented
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PoolVector<uint8_t> dst_data;
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if (dst_format == AudioStreamSample::FORMAT_8_BITS) {
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int data_size = current_instance->recording_data.size();
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dst_data.resize(data_size);
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PoolVector<uint8_t>::Write w = dst_data.write();
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for (int i = 0; i < data_size; i++) {
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int8_t v = CLAMP(current_instance->recording_data[i] * 128, -128, 127);
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w[i] = v;
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}
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} else if (dst_format == AudioStreamSample::FORMAT_16_BITS) {
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int data_size = current_instance->recording_data.size();
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dst_data.resize(data_size * 2);
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PoolVector<uint8_t>::Write w = dst_data.write();
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for (int i = 0; i < data_size; i++) {
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int16_t v = CLAMP(current_instance->recording_data[i] * 32768, -32768, 32767);
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encode_uint16(v, &w[i * 2]);
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}
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} else if (dst_format == AudioStreamSample::FORMAT_IMA_ADPCM) {
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//byte interleave
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Vector<float> left;
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Vector<float> right;
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int tframes = current_instance->recording_data.size() / 2;
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left.resize(tframes);
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right.resize(tframes);
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for (int i = 0; i < tframes; i++) {
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left.set(i, current_instance->recording_data[i * 2 + 0]);
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right.set(i, current_instance->recording_data[i * 2 + 1]);
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}
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PoolVector<uint8_t> bleft;
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PoolVector<uint8_t> bright;
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ResourceImporterWAV::_compress_ima_adpcm(left, bleft);
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ResourceImporterWAV::_compress_ima_adpcm(right, bright);
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int dl = bleft.size();
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dst_data.resize(dl * 2);
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PoolVector<uint8_t>::Write w = dst_data.write();
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PoolVector<uint8_t>::Read rl = bleft.read();
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PoolVector<uint8_t>::Read rr = bright.read();
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for (int i = 0; i < dl; i++) {
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w[i * 2 + 0] = rl[i];
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w[i * 2 + 1] = rr[i];
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}
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} else {
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ERR_PRINT("Format not implemented.");
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}
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Ref<AudioStreamSample> sample;
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sample.instance();
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sample->set_data(dst_data);
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sample->set_format(dst_format);
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sample->set_mix_rate(AudioServer::get_singleton()->get_mix_rate());
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sample->set_loop_mode(AudioStreamSample::LOOP_DISABLED);
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sample->set_loop_begin(0);
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sample->set_loop_end(0);
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sample->set_stereo(stereo);
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return sample;
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}
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void AudioEffectRecord::_bind_methods() {
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ClassDB::bind_method(D_METHOD("set_recording_active", "record"), &AudioEffectRecord::set_recording_active);
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ClassDB::bind_method(D_METHOD("is_recording_active"), &AudioEffectRecord::is_recording_active);
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ClassDB::bind_method(D_METHOD("set_format", "format"), &AudioEffectRecord::set_format);
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ClassDB::bind_method(D_METHOD("get_format"), &AudioEffectRecord::get_format);
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ClassDB::bind_method(D_METHOD("get_recording"), &AudioEffectRecord::get_recording);
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ADD_PROPERTY(PropertyInfo(Variant::INT, "format", PROPERTY_HINT_ENUM, "8-Bit,16-Bit,IMA-ADPCM"), "set_format", "get_format");
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}
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AudioEffectRecord::AudioEffectRecord() {
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format = AudioStreamSample::FORMAT_16_BITS;
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}
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