C++ (Cpp) mapEchoToColor Examples

Example #1

File: AudioStats.cpp Project: ArminW/re-whisper

void AudioEchoWidget::paintGL() {
	AudioInputPtr ai = g.ai;
	if (! ai || ! ai->sesEcho)
		return;

	ai->qmSpeex.lock();

	spx_int32_t sz;
	speex_echo_ctl(ai->sesEcho, SPEEX_ECHO_GET_IMPULSE_RESPONSE_SIZE, &sz);

	STACKVAR(spx_int32_t, w, sz);
	STACKVAR(float, W, sz);

	speex_echo_ctl(ai->sesEcho, SPEEX_ECHO_GET_IMPULSE_RESPONSE, w);

	ai->qmSpeex.unlock();

	int N = 160;
	int n = 2 * N;
	int M = sz / n;

	drft_lookup d;
	mumble_drft_init(&d, n);

	for (int j=0;j<M;j++) {
		for (int i=0;i<n;i++)
			W[j*n+i] = static_cast<float>(w[j*n+i]) / static_cast<float>(n);
		mumble_drft_forward(&d, & W[j*n]);
	}

	mumble_drft_clear(&d);

	float xscale = 1.0f / static_cast<float>(N);
	float yscale = 1.0f / static_cast<float>(M);

	glBegin(GL_QUADS);

	for (int j = 0; j < M; j++) {
		for (int i=1;i < N; i++) {
			float xa = static_cast<float>(i) * xscale;
			float ya = static_cast<float>(j) * yscale;

			float xb = xa + xscale;
			float yb = ya + yscale;

			mapEchoToColor(sqrtf(W[j*n+2*i]*W[j*n+2*i]+W[j*n+2*i-1]*W[j*n+2*i-1]) / 65536.f);
			glVertex2f(xa, ya);
			glVertex2f(xb, ya);
			glVertex2f(xb, yb);
			glVertex2f(xa, yb);
		}
	}

	glEnd();

	glBegin(GL_LINE_STRIP);
	glColor3f(1.0f, 0.0f, 1.0f);
	xscale = 1.0f / (2.0f*static_cast<float>(n));
	yscale = 1.0f / (200.0f * 32767.0f);
	for (int i=0;i<2*n;i++) {
		glVertex2f(static_cast<float>(i)*xscale, 0.5f + static_cast<float>(w[i]) * yscale);
	}
	glEnd();
}

Example #2

File: AudioStats.cpp Project: Acidburn0zzz/mumble

void AudioEchoWidget::paintEvent(QPaintEvent *) {
	QPainter paint(this);

	paint.scale(width(), height());
	paint.fillRect(rect(), Qt::black);

	AudioInputPtr ai = g.ai;
	if (! ai || ! ai->sesEcho)
		return;

	ai->qmSpeex.lock();

	spx_int32_t sz;
	speex_echo_ctl(ai->sesEcho, SPEEX_ECHO_GET_IMPULSE_RESPONSE_SIZE, &sz);

	STACKVAR(spx_int32_t, w, sz);
	STACKVAR(float, W, sz);

	speex_echo_ctl(ai->sesEcho, SPEEX_ECHO_GET_IMPULSE_RESPONSE, w);

	ai->qmSpeex.unlock();

	int N = 160;
	int n = 2 * N;
	int M = sz / n;

	drft_lookup d;
	mumble_drft_init(&d, n);

	for (int j=0;j<M;j++) {
		for (int i=0;i<n;i++)
			W[j*n+i] = static_cast<float>(w[j*n+i]) / static_cast<float>(n);
		mumble_drft_forward(&d, & W[j*n]);
	}

	mumble_drft_clear(&d);

	float xscale = 1.0f / static_cast<float>(N);
	float yscale = 1.0f / static_cast<float>(M);

	for (int j = 0; j < M; j++) {
		for (int i=1;i < N; i++) {
			float xa = static_cast<float>(i) * xscale;
			float ya = static_cast<float>(j) * yscale;

			float xb = xa + xscale;
			float yb = ya + yscale;

			const QColor &c = mapEchoToColor(sqrtf(W[j*n+2*i]*W[j*n+2*i]+W[j*n+2*i-1]*W[j*n+2*i-1]) / 65536.f);
			paint.fillRect(QRectF(QPointF(xa, ya), QPointF(xb, yb)), c);
		}
	}

	QPolygonF poly;
	xscale = 1.0f / (2.0f * static_cast<float>(n));
	yscale = 1.0f / (200.0f * 32767.0f);
	for (int i = 0; i < 2 * n; i++) {
		poly << QPointF(static_cast<float>(i) * xscale, 0.5f + static_cast<float>(w[i]) * yscale);
	}
	paint.setPen(QColor::fromRgbF(1.0f, 0.0f, 1.0f));
	paint.drawPolyline(poly);
}