C++ (Cpp) adv7180_set_video_standard示例

示例#1

文件： adv7180.c 项目： 513855417/linux

static int adv7180_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
{
	struct adv7180_state *state = to_state(sd);
	int err = mutex_lock_interruptible(&state->mutex);
	if (err)
		return err;

	if (state->streaming) {
		err = -EBUSY;
		goto unlock;
	}

	err = adv7180_set_video_standard(state,
			ADV7180_STD_AD_PAL_BG_NTSC_J_SECAM);
	if (err)
		goto unlock;

	msleep(100);
	__adv7180_status(state, NULL, std);

	err = v4l2_std_to_adv7180(state->curr_norm);
	if (err < 0)
		goto unlock;

	err = adv7180_set_video_standard(state, err);

unlock:
	mutex_unlock(&state->mutex);
	return err;
}

示例#2

文件： adv7180.c 项目： 513855417/linux

static int adv7180_program_std(struct adv7180_state *state)
{
	int ret;

	ret = v4l2_std_to_adv7180(state->curr_norm);
	if (ret < 0)
		return ret;

	ret = adv7180_set_video_standard(state, ret);
	if (ret < 0)
		return ret;
	return 0;
}

示例#3

文件： adv7180.c 项目： 020gzh/linux

static int adv7180_program_std(struct adv7180_state *state)
{
	int ret;

	if (state->autodetect) {
		ret = adv7180_set_video_standard(state,
			ADV7180_STD_AD_PAL_BG_NTSC_J_SECAM);
		if (ret < 0)
			return ret;

		__adv7180_status(state, NULL, &state->curr_norm);
	} else {
		ret = v4l2_std_to_adv7180(state->curr_norm);
		if (ret < 0)
			return ret;

		ret = adv7180_set_video_standard(state, ret);
		if (ret < 0)
			return ret;
	}

	return 0;
}