daydream_device.h

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// Copyright 2019-2020, Collabora, Ltd.
// SPDX-License-Identifier: BSL-1.0
/*!
 * @file
 * @brief  Interface to Daydream driver code.
 * @author Pete Black <pete.black@collabora.com>
 * @ingroup drv_daydream
 */
 
#pragma once
 
#include "math/m_api.h"
#include "math/m_imu_pre.h"
#include "math/m_imu_3dof.h"
 
#include "xrt/xrt_device.h"
 
#include "os/os_threading.h"
#include "os/os_ble.h"
 
#include "util/u_logging.h"
 
 
#ifdef __cplusplus
extern "C" {
#endif
 
 
/*!
 * A parsed sample of accel and gyro.
 */
struct daydream_parsed_sample
{
        struct xrt_vec3_i32 accel;
        struct xrt_vec3_i32 gyro;
        struct xrt_vec3_i32 mag;
};
 
enum daydream_button_bits
{
        DAYDREAM_TOUCHPAD_BUTTON_BIT = 0,
        DAYDREAM_CIRCLE_BUTTON_BIT = 1,
        DAYDREAM_BAR_BUTTON_BIT = 2,
        DAYDREAM_VOLUP_BUTTON_BIT = 3,
        DAYDREAM_VOLDN_BUTTON_BIT = 4,
};
 
enum daydream_button_masks
{
        DAYDREAM_TOUCHPAD_BUTTON_MASK = 1 << DAYDREAM_TOUCHPAD_BUTTON_BIT,
        DAYDREAM_CIRCLE_BUTTON_MASK = 1 << DAYDREAM_CIRCLE_BUTTON_BIT,
        DAYDREAM_BAR_BUTTON_MASK = 1 << DAYDREAM_BAR_BUTTON_BIT,
        DAYDREAM_VOLUP_BUTTON_MASK = 1 << DAYDREAM_VOLUP_BUTTON_BIT,
        DAYDREAM_VOLDN_BUTTON_MASK = 1 << DAYDREAM_VOLDN_BUTTON_BIT,
};
 
struct daydream_parsed_input
{
        uint8_t buttons;
        int timestamp;
        uint16_t timestamp_last;
        struct xrt_vec2_i32 touchpad;
        struct daydream_parsed_sample sample;
};
 
/*!
 * @implements xrt_device
 */
struct daydream_device
{
        struct xrt_device base;
        struct os_ble_device *ble;
        struct os_thread_helper oth;
        char mac[128];
        char path[128];
 
        struct
        {
                //! Lock for last and fusion.
                struct os_mutex lock;
 
                //! Last sensor read.
                struct daydream_parsed_input last;
 
                struct m_imu_pre_filter pre_filter;
                struct m_imu_3dof fusion;
        };
 
        enum u_logging_level log_level;
 
        struct
        {
                bool last;
        } gui;
};
 
 
struct daydream_device *
daydream_device_create(struct os_ble_device *ble);
 
 
#define DAYDREAM_TRACE(d, ...) U_LOG_XDEV_IFL_T(&d->base, d->log_level, __VA_ARGS__)
#define DAYDREAM_DEBUG(d, ...) U_LOG_XDEV_IFL_D(&d->base, d->log_level, __VA_ARGS__)
#define DAYDREAM_INFO(d, ...) U_LOG_XDEV_IFL_I(&d->base, d->log_level, __VA_ARGS__)
#define DAYDREAM_WARN(d, ...) U_LOG_XDEV_IFL_W(&d->base, d->log_level, __VA_ARGS__)
#define DAYDREAM_ERROR(d, ...) U_LOG_XDEV_IFL_E(&d->base, d->log_level, __VA_ARGS__)
 
 
#ifdef __cplusplus
}
#endif