73 lines
2.8 KiB
C++
73 lines
2.8 KiB
C++
/***
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Olive - Non-Linear Video Editor
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Copyright (C) 2019 Olive Team
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "toneeffect.h"
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#include <QtMath>
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#define TONE_TYPE_SINE 0
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#include "project/clip.h"
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#include "project/sequence.h"
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#include "debug.h"
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ToneEffect::ToneEffect(ClipPtr c, const EffectMeta *em) : Effect(c, em), sinX(INT_MIN) {
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type_val = add_row(tr("Type"))->add_field(EFFECT_FIELD_COMBO, "type");
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type_val->add_combo_item("Sine", TONE_TYPE_SINE);
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freq_val = add_row(tr("Frequency"))->add_field(EFFECT_FIELD_DOUBLE, "frequency");
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freq_val->set_double_minimum_value(20);
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freq_val->set_double_maximum_value(20000);
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freq_val->set_double_default_value(1000);
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amount_val = add_row(tr("Amount"))->add_field(EFFECT_FIELD_DOUBLE, "amount");
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amount_val->set_double_minimum_value(0);
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amount_val->set_double_maximum_value(100);
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amount_val->set_double_default_value(25);
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mix_val = add_row(tr("Mix"))->add_field(EFFECT_FIELD_BOOL, "mix");
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mix_val->set_bool_value(true);
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}
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void ToneEffect::process_audio(double timecode_start, double timecode_end, quint8 *samples, int nb_bytes, int) {
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double interval = (timecode_end - timecode_start)/nb_bytes;
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for (int i=0;i<nb_bytes;i+=4) {
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double timecode = timecode_start+(interval*i);
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qint16 left_tone_sample = qint16(qRound(qSin((2*M_PI*sinX*freq_val->get_double_value(timecode, true))/parent_clip->sequence->audio_frequency)*log_volume(amount_val->get_double_value(timecode, true)*0.01)*INT16_MAX));
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qint16 right_tone_sample = left_tone_sample;
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// mix with source audio
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if (mix_val->get_bool_value(timecode, true)) {
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qint16 left_sample = qint16(((samples[i+1] & 0xFF) << 8) | (samples[i] & 0xFF));
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qint16 right_sample = qint16(((samples[i+3] & 0xFF) << 8) | (samples[i+2] & 0xFF));
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left_tone_sample = mix_audio_sample(left_tone_sample, left_sample);
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right_tone_sample = mix_audio_sample(right_tone_sample, right_sample);
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}
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samples[i+3] = quint8(right_tone_sample >> 8);
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samples[i+2] = quint8(right_tone_sample);
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samples[i+1] = quint8(left_tone_sample >> 8);
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samples[i] = quint8(left_tone_sample);
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sinX++;
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}
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}
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