godot/servers/audio/effects/audio_effect_record.cpp
Rémi Verschelde 0be6d925dc Style: clang-format: Disable KeepEmptyLinesAtTheStartOfBlocks
Which means that reduz' beloved style which we all became used to
will now be changed automatically to remove the first empty line.

This makes us lean closer to 1TBS (the one true brace style) instead
of hybridating it with some Allman-inspired spacing.

There's still the case of braces around single-statement blocks that
needs to be addressed (but clang-format can't help with that, but
clang-tidy may if we agree about it).

Part of #33027.
2020-05-14 16:54:55 +02:00

300 lines
9.3 KiB
C++

/*************************************************************************/
/* audio_effect_record.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "audio_effect_record.h"
void AudioEffectRecordInstance::process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count) {
if (!is_recording) {
for (int i = 0; i < p_frame_count; i++) {
p_dst_frames[i] = p_src_frames[i];
}
return;
}
//Add incoming audio frames to the IO ring buffer
const AudioFrame *src = p_src_frames;
AudioFrame *rb_buf = ring_buffer.ptrw();
for (int i = 0; i < p_frame_count; i++) {
p_dst_frames[i] = p_src_frames[i];
rb_buf[ring_buffer_pos & ring_buffer_mask] = src[i];
ring_buffer_pos++;
}
}
void AudioEffectRecordInstance::_update_buffer() {
//Case: Frames are remaining in the buffer
while (ring_buffer_read_pos < ring_buffer_pos) {
//Read from the buffer into recording_data
_io_store_buffer();
}
}
void AudioEffectRecordInstance::_update(void *userdata) {
AudioEffectRecordInstance *ins = (AudioEffectRecordInstance *)userdata;
ins->_update_buffer();
}
bool AudioEffectRecordInstance::process_silence() const {
return true;
}
void AudioEffectRecordInstance::_io_thread_process() {
thread_active = true;
while (is_recording) {
//Check: The current recording has been requested to stop
if (!base->recording_active) {
is_recording = false;
}
_update_buffer();
if (is_recording) {
//Wait to avoid too much busy-wait
OS::get_singleton()->delay_usec(500);
}
}
thread_active = false;
}
void AudioEffectRecordInstance::_io_store_buffer() {
int to_read = ring_buffer_pos - ring_buffer_read_pos;
AudioFrame *rb_buf = ring_buffer.ptrw();
while (to_read) {
AudioFrame buffered_frame = rb_buf[ring_buffer_read_pos & ring_buffer_mask];
recording_data.push_back(buffered_frame.l);
recording_data.push_back(buffered_frame.r);
ring_buffer_read_pos++;
to_read--;
}
}
void AudioEffectRecordInstance::_thread_callback(void *_instance) {
AudioEffectRecordInstance *aeri = reinterpret_cast<AudioEffectRecordInstance *>(_instance);
aeri->_io_thread_process();
}
void AudioEffectRecordInstance::init() {
//Reset recorder status
ring_buffer_pos = 0;
ring_buffer_read_pos = 0;
//We start a new recording
recording_data.resize(0); //Clear data completely and reset length
is_recording = true;
#ifdef NO_THREADS
AudioServer::get_singleton()->add_update_callback(&AudioEffectRecordInstance::_update, this);
#else
io_thread = Thread::create(_thread_callback, this);
#endif
}
void AudioEffectRecordInstance::finish() {
#ifdef NO_THREADS
AudioServer::get_singleton()->remove_update_callback(&AudioEffectRecordInstance::_update, this);
#else
if (thread_active) {
Thread::wait_to_finish(io_thread);
}
#endif
}
AudioEffectRecordInstance::~AudioEffectRecordInstance() {
finish();
}
Ref<AudioEffectInstance> AudioEffectRecord::instance() {
Ref<AudioEffectRecordInstance> ins;
ins.instance();
ins->base = Ref<AudioEffectRecord>(this);
ins->is_recording = false;
//Re-using the buffer size calculations from audio_effect_delay.cpp
float ring_buffer_max_size = IO_BUFFER_SIZE_MS;
ring_buffer_max_size /= 1000.0; //convert to seconds
ring_buffer_max_size *= AudioServer::get_singleton()->get_mix_rate();
int ringbuff_size = ring_buffer_max_size;
int bits = 0;
while (ringbuff_size > 0) {
bits++;
ringbuff_size /= 2;
}
ringbuff_size = 1 << bits;
ins->ring_buffer_mask = ringbuff_size - 1;
ins->ring_buffer_pos = 0;
ins->ring_buffer.resize(ringbuff_size);
ins->ring_buffer_read_pos = 0;
ensure_thread_stopped();
current_instance = ins;
if (recording_active) {
ins->init();
}
return ins;
}
void AudioEffectRecord::ensure_thread_stopped() {
recording_active = false;
if (current_instance != nullptr) {
current_instance->finish();
}
}
void AudioEffectRecord::set_recording_active(bool p_record) {
if (p_record) {
if (current_instance == nullptr) {
WARN_PRINT("Recording should not be set as active before Godot has initialized.");
recording_active = false;
return;
}
ensure_thread_stopped();
recording_active = true;
current_instance->init();
} else {
recording_active = false;
}
}
bool AudioEffectRecord::is_recording_active() const {
return recording_active;
}
void AudioEffectRecord::set_format(AudioStreamSample::Format p_format) {
format = p_format;
}
AudioStreamSample::Format AudioEffectRecord::get_format() const {
return format;
}
Ref<AudioStreamSample> AudioEffectRecord::get_recording() const {
AudioStreamSample::Format dst_format = format;
bool stereo = true; //forcing mono is not implemented
Vector<uint8_t> dst_data;
ERR_FAIL_COND_V(current_instance.is_null(), nullptr);
ERR_FAIL_COND_V(current_instance->recording_data.size() == 0, nullptr);
if (dst_format == AudioStreamSample::FORMAT_8_BITS) {
int data_size = current_instance->recording_data.size();
dst_data.resize(data_size);
uint8_t *w = dst_data.ptrw();
for (int i = 0; i < data_size; i++) {
int8_t v = CLAMP(current_instance->recording_data[i] * 128, -128, 127);
w[i] = v;
}
} else if (dst_format == AudioStreamSample::FORMAT_16_BITS) {
int data_size = current_instance->recording_data.size();
dst_data.resize(data_size * 2);
uint8_t *w = dst_data.ptrw();
for (int i = 0; i < data_size; i++) {
int16_t v = CLAMP(current_instance->recording_data[i] * 32768, -32768, 32767);
encode_uint16(v, &w[i * 2]);
}
} else if (dst_format == AudioStreamSample::FORMAT_IMA_ADPCM) {
//byte interleave
Vector<float> left;
Vector<float> right;
int tframes = current_instance->recording_data.size() / 2;
left.resize(tframes);
right.resize(tframes);
for (int i = 0; i < tframes; i++) {
left.set(i, current_instance->recording_data[i * 2 + 0]);
right.set(i, current_instance->recording_data[i * 2 + 1]);
}
Vector<uint8_t> bleft;
Vector<uint8_t> bright;
ResourceImporterWAV::_compress_ima_adpcm(left, bleft);
ResourceImporterWAV::_compress_ima_adpcm(right, bright);
int dl = bleft.size();
dst_data.resize(dl * 2);
uint8_t *w = dst_data.ptrw();
const uint8_t *rl = bleft.ptr();
const uint8_t *rr = bright.ptr();
for (int i = 0; i < dl; i++) {
w[i * 2 + 0] = rl[i];
w[i * 2 + 1] = rr[i];
}
} else {
ERR_PRINT("Format not implemented.");
}
Ref<AudioStreamSample> sample;
sample.instance();
sample->set_data(dst_data);
sample->set_format(dst_format);
sample->set_mix_rate(AudioServer::get_singleton()->get_mix_rate());
sample->set_loop_mode(AudioStreamSample::LOOP_DISABLED);
sample->set_loop_begin(0);
sample->set_loop_end(0);
sample->set_stereo(stereo);
return sample;
}
void AudioEffectRecord::_bind_methods() {
ClassDB::bind_method(D_METHOD("set_recording_active", "record"), &AudioEffectRecord::set_recording_active);
ClassDB::bind_method(D_METHOD("is_recording_active"), &AudioEffectRecord::is_recording_active);
ClassDB::bind_method(D_METHOD("set_format", "format"), &AudioEffectRecord::set_format);
ClassDB::bind_method(D_METHOD("get_format"), &AudioEffectRecord::get_format);
ClassDB::bind_method(D_METHOD("get_recording"), &AudioEffectRecord::get_recording);
ADD_PROPERTY(PropertyInfo(Variant::INT, "format", PROPERTY_HINT_ENUM, "8-Bit,16-Bit,IMA-ADPCM"), "set_format", "get_format");
}
AudioEffectRecord::AudioEffectRecord() {
format = AudioStreamSample::FORMAT_16_BITS;
recording_active = false;
}