Function cellCameraOpenEx

ps3fw/cellCamera.cpp:576–664

}

error_code cellCameraOpenEx(s32 dev_num, vm::ptr<CellCameraInfoEx> info)
{
	cellCamera.todo("cellCameraOpenEx(dev_num=%d, info=*0x%x)", dev_num, info);

	// This function has a very weird order of checking for errors

	if (!info)
	{
		return CELL_CAMERA_ERROR_PARAM;
	}

	if (g_cfg.io.camera == camera_handler::null)
	{
		return not_an_error(CELL_CAMERA_ERROR_DEVICE_NOT_FOUND);
	}

	if (auto res = cellCameraSetAttribute(dev_num, CELL_CAMERA_READMODE, info->read_mode, 0))
	{
		return res;
	}

	if (info->read_mode == CELL_CAMERA_READ_DIRECT)
	{
		// Note: arg1 is the return value of previous SetAttribute
		if (auto res = cellCameraSetAttribute(dev_num, CELL_CAMERA_GAMEPID, 0, 0))
		{
			return res;
		}
	}

	if (!check_dev_num(dev_num))
	{
		return CELL_CAMERA_ERROR_PARAM;
	}

	auto& g_camera = g_fxo->get<camera_thread>();

	if (g_camera.is_open)
	{
		return CELL_CAMERA_ERROR_ALREADY_OPEN;
	}

	if (auto res = check_camera_info(*info))
	{
		return res;
	}

	// calls cellCameraGetAttribute(dev_num, CELL_CAMERA_PBUFFER) at some point

	const auto vbuf_size = get_video_buffer_size(*info);

	std::lock_guard lock(g_camera.mutex);

	// TODO: find out if the buffers are also checked for nullptr
	if (info->read_mode == CELL_CAMERA_READ_DIRECT)
	{
		info->pbuf[0] = vm::cast(vm::alloc(vbuf_size, vm::main));
		info->pbuf[1] = vm::cast(vm::alloc(vbuf_size, vm::main));