Ejemplos de convert_to_twos en C++ (Cpp)

Ejemplo n.º 1

Archivo: cx25821-medusa-video.c Proyecto: beam/linux-tbs-drivers

int medusa_set_hue(struct cx25821_dev *dev, int hue, int decoder)
{
	int ret_val = 0;
	int value = 0;
	u32 val = 0, tmp = 0;

	mutex_lock(&dev->lock);

	if ((hue > VIDEO_PROCAMP_MAX) || (hue < VIDEO_PROCAMP_MIN)) {
		mutex_unlock(&dev->lock);
		return -1;
	}

	ret_val =
	    mapM(VIDEO_PROCAMP_MIN, VIDEO_PROCAMP_MAX, hue, SIGNED_BYTE_MIN,
		 SIGNED_BYTE_MAX, &value);

	value = convert_to_twos(value, 8);
	val =
	    cx25821_i2c_read(&dev->i2c_bus[0],
			     VDEC_A_HUE_CTRL + (0x200 * decoder), &tmp);
	val &= 0xFFFFFF00;

	ret_val |=
	    cx25821_i2c_write(&dev->i2c_bus[0],
			      VDEC_A_HUE_CTRL + (0x200 * decoder), val | value);

	mutex_unlock(&dev->lock);
	return ret_val;
}

Ejemplo n.º 2

Archivo: cx25821-medusa-video.c Proyecto: AlexShiLucky/linux

int medusa_set_brightness(struct cx25821_dev *dev, int brightness, int decoder)
{
	int ret_val = 0;
	int value = 0;
	u32 val = 0, tmp = 0;

	if ((brightness > VIDEO_PROCAMP_MAX) ||
	    (brightness < VIDEO_PROCAMP_MIN)) {
		return -1;
	}
	ret_val = mapM(VIDEO_PROCAMP_MIN, VIDEO_PROCAMP_MAX, brightness,
			SIGNED_BYTE_MIN, SIGNED_BYTE_MAX, &value);
	value = convert_to_twos(value, 8);
	val = cx25821_i2c_read(&dev->i2c_bus[0],
			VDEC_A_BRITE_CTRL + (0x200 * decoder), &tmp);
	val &= 0xFFFFFF00;
	ret_val |= cx25821_i2c_write(&dev->i2c_bus[0],
			VDEC_A_BRITE_CTRL + (0x200 * decoder), val | value);
	return ret_val;
}