#ifndef VIDEO_PROC_H_
#define VIDEO_PROC_H_

#define VXR_FIRMWARE_LENGTH					(16u) // max 15 characters and a null terminator

#define TASK_VIDEO_PROC_STACK_SIZE			(1024/sizeof(portSTACK_TYPE))
#define TASK_VIDEO_PROC_PRIORITY			(tskIDLE_PRIORITY)
#define VIDEO_TASK_DELAY					(20u)
#define VXR_RC_INTERFACE_DELAY				(275u) // at least 250ms after reset before accessing remote control interface

#define VIDEOPROC_NOTIFY_1V0_READY					(1u << 0u)
#define VIDEOPROC_NOTIFY_1V8_AND_OLED_PWR_READY		(1u << 1u)
#define VIDEOPROC_NOTIFY_VXR_RESET					(1u << 2u)
#define VIDEOPROC_NOTIFY_DEBUG_PROX_DISABLED		(1u << 3u)
#define VIDEOPROC_COLORBAR							(1u << 4u)
#define VIDEOPROC_DISP_POWER_DISABLE				(1u << 5u)
#define VIDEOPROC_DISP_POWER_ENABLE					(1u << 6u)
#define VIDEOPROC_NEW_FAN_SPEED						(1u << 7u)
#define VIDEOPROC_EYETRACKING_ERROR					(1u << 8u)
#define VIDEOPROC_EYETRACKING_ERROR_CLEAR			(1u << 9u)
#define VIDEOPROC_TRACK_UART_ACTIVITY				(1u << 10u)
#define VIDEOPROC_VXR_POWER_DOWN					(1u << 11u)
#define VIDEOPROC_VXR_POWER_UP						(1u << 12u)
#define VIDEOPROC_DOZE_SLEEP						(1u << 13u) // enter doze (warm shallow sleep)
#define VIDEOPROC_DOZE_WAKE							(1u << 14u) // wake from doze
#define VIDEOPROC_STACK_OVERFLOW					(1u << 20u)

#define VIDEOPROC_NOTIFY_TASKBITS		(VIDEOPROC_NOTIFY_VXR_RESET | VIDEOPROC_NOTIFY_DEBUG_PROX_DISABLED \
										| VIDEOPROC_COLORBAR | VIDEOPROC_DISP_POWER_DISABLE | VIDEOPROC_DISP_POWER_ENABLE \
										| VIDEOPROC_NEW_FAN_SPEED | VIDEOPROC_EYETRACKING_ERROR | VIDEOPROC_EYETRACKING_ERROR_CLEAR \
										| VIDEOPROC_TRACK_UART_ACTIVITY | VIDEOPROC_VXR_POWER_DOWN | VIDEOPROC_VXR_POWER_UP \
										| VIDEOPROC_DOZE_SLEEP | VIDEOPROC_DOZE_WAKE )

#define DEFAULT_OLED_BRIGHTNESS			(0x010Au) // 266d, or about 26% (max is 0x03FF = 1023d)

#define NUM_BRIGHTNESS_RETRIES			(3u) // Number of times to retry setting brightness if it failed

// Doze (warm shallow sleep, ADR-0005): on doze-sleep the brightness is swept to
// the floor over ~DOZE_SWEEP_MS, then the OLED display is turned off (true
// black); doze-wake reverses it. The sweep advances one step per video-task
// iteration (VIDEO_TASK_DELAY) so it is naturally target-seeking: a wake that
// arrives mid-fade just flips the phase and the next iteration ramps back up.
#define DOZE_BRIGHTNESS_FLOOR			(0u)		// register 0 = lowest emission
#define DOZE_SWEEP_MS					(300u)		// target fade duration
#define DOZE_SWEEP_STEPS				(DOZE_SWEEP_MS / VIDEO_TASK_DELAY) // ~15 @ 20ms
// The OLED is perceptually gamma'd: a register-linear sweep reads as a fast
// jump then a slow crawl (camera-confirmed, docs/photon-latency-bench.md). The
// sweep intent stays linear (so the target-seeking reversal logic is simple),
// but the register actually written is gamma-mapped so perceived brightness
// ramps evenly. >1 spends more of the sweep at low register (where the eye is
// most sensitive). Camera luminance fit ~2.9; default a touch gentler. By ear.
#define DOZE_SWEEP_GAMMA				(2.2f)

// Definitions for the display status
#define VIDSTATUS_DISPLAYS_ON						(1u << 0u)
#define VIDSTATUS_PROX_ON							(1u << 1u)
#define VIDSTATUS_PROX_TIMER_EXPIRED				(1u << 2u)
#define VIDSTATUS_DSC_ENABLED						(1u << 3u)
#define VIDSTATUS_VIDEO_MODE_SHIFT					(4u) // high nibble of byte 0 is the video mode, using Video_Selection_T from oled_control
#define VIDSTATUS_LINK_RATE_SHIFT					(8u) // low nibble of byte 1 is DisplayPort link rate
														// 0 = unknown
														// 1 = RBR (1.62 Gbps)
														// 2 = HBR (2.7 Gbps)
														// 3 = HBR2 (5.4 Gbps)
														// 4 = HBR3 (8.1 Gbps)
#define VIDSTATUS_LANE_COUNT_SHIFT					(12u) // high nibble of byte 1 is number of DisplayPort lanes

typedef enum _Edid_Select{
	EDID_DEFAULT = 0,
	EDID_90HZ_ONLY = 1,
	EDID_75HZ_ONLY = 2,
	EDID_72HZ_ONLY = 3
} Edid_Select_T;

typedef enum FATP_Mode{
	FATP_Mode_0 = 0x00,
	FATP_Mode_1 = 0x01,
	FATP_Mode_2 = 0x02,
	FATP_Mode_None = 0xFF
} FATP_Mode_T;

TaskHandle_t video_proc_task_handle(void);
bool video_is_enabled(void);
bool video_is_dozing(void);
bool displays_are_on(void);
void start_video_task(void);
void task_video_proc(void *pvParameters);
void video_proc_set_fatp_edid(FATP_Mode_T fatp_mode_sel);
uint8_t video_proc_select_edid(Edid_Select_T edid_select);
uint8_t video_set_brightness(uint16_t new_brightness);
uint8_t video_set_colorbar(void);
uint16_t video_get_brightness(void);
uint16_t video_get_display_status(void);
uint8_t video_get_vxr_status(void);
void video_copy_vxr_firmware(uint8_t* fwname);
bool proximity_disable(void);
bool proximity_enable(void);
#endif /* VIDEO_PROC_H_ */