53 lines
2.0 KiB
C++
53 lines
2.0 KiB
C++
#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(Clip* 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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