647 lines
17 KiB
C
647 lines
17 KiB
C
#include "e_system.h"
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#include <stdint.h>
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#include <stdbool.h>
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typedef struct
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{
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char *edid;
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int screen;
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} Dev;
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typedef struct
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{
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char *req, *params; // don't free - part of alloc for req struct at offset
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} Req;
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static Eina_Lock _devices_lock;
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static Eina_List *_devices = NULL;
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static Eina_List *_req = NULL;
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static Eina_Semaphore _worker_sem;
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//////////////////////////////////////////////////////////////////////////////
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// needed ddc types
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#define DDCA_EDID_MFG_ID_FIELD_SIZE 4
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#define DDCA_EDID_MODEL_NAME_FIELD_SIZE 14
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#define DDCA_EDID_SN_ASCII_FIELD_SIZE 14
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typedef int DDCA_Status;
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typedef void * DDCA_Display_Ref;
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typedef void * DDCA_Display_Handle;
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typedef uint8_t DDCA_Vcp_Feature_Code;
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typedef enum
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{
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DDCA_IO_I2C,
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DDCA_IO_ADL,
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DDCA_IO_USB
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} DDCA_IO_Mode;
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typedef struct
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{
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int iAdapterIndex;
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int iDisplayIndex;
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} DDCA_Adlno;
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typedef struct
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{
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DDCA_IO_Mode io_mode;
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union {
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int i2c_busno;
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DDCA_Adlno adlno;
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int hiddev_devno;
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} path;
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} DDCA_IO_Path;
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typedef struct
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{
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uint8_t major;
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uint8_t minor;
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} DDCA_MCCS_Version_Spec;
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typedef struct
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{
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char marker[4];
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int dispno;
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DDCA_IO_Path path;
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int usb_bus;
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int usb_device;
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char mfg_id[DDCA_EDID_MFG_ID_FIELD_SIZE];
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char model_name[DDCA_EDID_MODEL_NAME_FIELD_SIZE];
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char sn[DDCA_EDID_SN_ASCII_FIELD_SIZE];
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uint16_t product_code;
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uint8_t edid_bytes[128];
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DDCA_MCCS_Version_Spec vcp_version;
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DDCA_Display_Ref dref;
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} DDCA_Display_Info;
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typedef struct
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{
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int ct;
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DDCA_Display_Info info[];
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} DDCA_Display_Info_List;
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typedef struct
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{
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uint8_t mh;
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uint8_t ml;
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uint8_t sh;
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uint8_t sl;
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} DDCA_Non_Table_Vcp_Value;
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//////////////////////////////////////////////////////////////////////////////
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// ddc feature codes we plan to support
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// 0x12 contrast (0->100, 75)
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// 0x16 video gain r (0->100, 50)
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// 0x18 video gain g (0->100, 50)
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// 0x1a video gain b (0->100, 50)
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// 0xaa screen rotation (read only)
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// {0x01, "0 degrees"},
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// {0x02, "90 degrees"},
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// {0x03, "180 degrees"},
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// {0x04, "270 degrees"},
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// {0xff, "Display cannot supply orientation"},
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// 0x6c video black level r (0->255, 128)
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// 0x6e video black level g (0->255, 128)
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// 0x70 video black level b (0->255, 128)
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// 0x6b backlight level w
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// 0x6d backlight level r
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// 0x6f backlight level g
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// 0x71 backlight level b
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// 0xd6 power mode (10x = on, 0x4 = off)
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// {0x01, "DPM: On, DPMS: Off"},
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// {0x02, "DPM: Off, DPMS: Standby"},
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// {0x03, "DPM: Off, DPMS: Suspend"},
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// {0x04, "DPM: Off, DPMS: Off" },
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// 0xb6 display tech (readonly) (0x03 = LCD active matrix)
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// {0x01, "CRT (shadow mask)"},
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// {0x02, "CRT (aperture grill)"},
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// {0x03, "LCD (active matrix)"}, // TFT in 2.0
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// {0x04, "LCos"},
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// {0x05, "Plasma"},
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// {0x06, "OLED"},
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// {0x07, "EL"},
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// {0x08, "Dynamic MEM"}, // MEM in 2.0
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// {0x09, "Static MEM"}, // not in 2.0
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// 0x62 speaker volume (0-100)
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// 0x8d audio mute (1=mute, 2=unmute)
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// 0xca OSD (1=disabled, 2=enabled)
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// 0xda scan mode
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// {0x00, "Normal operation"},
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// {0x01, "Underscan"},
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// {0x02, "Overscan"},
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// {0x03, "Widescreen" }
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// 0xdb image mode
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// {0x00, "No effect"},
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// {0x01, "Full mode"},
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// {0x02, "Zoom mode"},
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// {0x03, "Squeeze mode" },
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// {0x04, "Variable"},
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// 0x8d blank state (1=blank, 2 = unblack)
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// 0x82 horiz mirror (0=normal, 1 = mirror)
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// 0x84 vert mirror (0=normal, 1 = mirror)
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// 0x63 speaker sel (0=front l/r, 1=side l/r, 2=rear l/r, 3=subwoofer)
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// 0x86 scaling values
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// {0x01, "No scaling"},
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// {0x02, "Max image, no aspect ration distortion"},
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// {0x03, "Max vertical image, no aspect ratio distortion"},
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// {0x04, "Max horizontal image, no aspect ratio distortion"},
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// {0x05, "Max vertical image with aspect ratio distortion"},
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// {0x06, "Max horizontal image with aspect ratio distortion"},
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// {0x07, "Linear expansion (compression) on horizontal axis"}, // Full mode
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// {0x08, "Linear expansion (compression) on h and v axes"}, // Zoom mode
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// {0x09, "Squeeze mode"},
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// {0x0a, "Non-linear expansion"}, // Variable
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// 0x94 stereo mode
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// {0x00, "Speaker off/Audio not supported"},
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// {0x01, "Mono"},
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// {0x02, "Stereo"},
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// {0x03, "Stereo expanded"},
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// {0x11, "SRS 2.0"},
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// {0x12, "SRS 2.1"},
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// {0x13, "SRS 3.1"},
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// {0x14, "SRS 4.1"},
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// {0x15, "SRS 5.1"},
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// {0x16, "SRS 6.1"},
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// {0x17, "SRS 7.1"},
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// {0x21, "Dolby 2.0"},
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// {0x22, "Dolby 2.1"},
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// {0x23, "Dolby 3.1"},
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// {0x24, "Dolby 4.1"},
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// {0x25, "Dolby 5.1"},
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// {0x26, "Dolby 6.1"},
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// {0x27, "Dolby 7.1"},
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// {0x31, "THX 2.0"},
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// {0x32, "THX 2.1"},
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// {0x33, "THX 3.1"},
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// {0x34, "THX 4.1"},
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// {0x35, "THX 5.1"},
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// {0x36, "THX 6.1"},
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// {0x37, "THX 7.1"},
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//////////////////////////////////////////////////////////////////////////////
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// ddc lib handle and func symbols
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static void *ddc_lib = NULL;
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struct {
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DDCA_Status (*ddca_get_display_info_list2)
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(bool include_invalid_displays, DDCA_Display_Info_List **dlist_loc);
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void (*ddca_free_display_info_list)
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(DDCA_Display_Info_List *dlist);
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DDCA_Status (*ddca_open_display2)
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(DDCA_Display_Ref ddca_dref, bool wait, DDCA_Display_Handle *ddca_dh_loc);
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DDCA_Status (*ddca_get_non_table_vcp_value)
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(DDCA_Display_Handle ddca_dh, DDCA_Vcp_Feature_Code feature_code, DDCA_Non_Table_Vcp_Value *valrec);
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DDCA_Status (*ddca_set_non_table_vcp_value)
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(DDCA_Display_Handle ddca_dh, DDCA_Vcp_Feature_Code feature_code, uint8_t hi_byte, uint8_t lo_byte);
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DDCA_Status (*ddca_close_display)
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(DDCA_Display_Handle ddca_dh);
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void (*ddca_set_global_sleep_multiplier)
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(double multiplier);
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} ddc_func;
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static DDCA_Display_Info_List *ddc_dlist = NULL;
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static DDCA_Display_Handle *ddc_dh = NULL;
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static void
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_ddc_clean(void)
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{
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int i;
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if (!ddc_lib) return;
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if (ddc_dlist)
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{
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if (ddc_dh)
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{
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for (i = 0; i < ddc_dlist->ct; i++)
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{
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ddc_func.ddca_close_display(ddc_dh[i]);
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}
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free(ddc_dh);
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ddc_dh = NULL;
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}
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ddc_func.ddca_free_display_info_list(ddc_dlist);
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ddc_dlist = NULL;
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}
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}
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static Eina_Bool
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_ddc_probe(void)
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{
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Dev *d;
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int i;
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if (!ddc_lib) return EINA_FALSE;
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eina_lock_take(&_devices_lock);
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EINA_LIST_FREE(_devices, d)
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{
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free(d->edid);
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free(d);
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}
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eina_lock_release(&_devices_lock);
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_ddc_clean();
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// the below can be quite sluggish, so we don't want to do this
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// often, even though this is isolated in a worker thread. it will
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// block the ddc worker thread while this is done.
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if (ddc_func.ddca_get_display_info_list2(false, &ddc_dlist) != 0) goto err;
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if (!ddc_dlist) goto err;
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ddc_dh = calloc(ddc_dlist->ct, sizeof(DDCA_Display_Handle));
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if (!ddc_dh)
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{
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ddc_func.ddca_free_display_info_list(ddc_dlist);
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ddc_dlist = NULL;
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free(ddc_dh);
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goto err;
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}
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for (i = 0; i < ddc_dlist->ct; i++)
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{
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DDCA_Display_Info *dinfo = &(ddc_dlist->info[i]);
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DDCA_Display_Ref dref = dinfo->dref;
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int j;
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if (ddc_func.ddca_open_display2(dref, false, &(ddc_dh[i])) != 0)
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{
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for (i = i - 1; i >= 0; i--)
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{
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ddc_func.ddca_close_display(ddc_dh[i]);
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}
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free(ddc_dh);
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ddc_dh = NULL;
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ddc_func.ddca_free_display_info_list(ddc_dlist);
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ddc_dlist = NULL;
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goto err;
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}
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d = calloc(1, sizeof(Dev));
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if (d)
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{
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d->edid = malloc((128 * 2) + 1);
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if (d->edid)
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{
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for (j = 0; j < 128; j++)
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snprintf(&(d->edid[j * 2]), 3, "%02x", dinfo->edid_bytes[j]);
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d->edid[j * 2] = 0;
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d->screen = i;
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eina_lock_take(&_devices_lock);
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_devices = eina_list_append(_devices, d);
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eina_lock_release(&_devices_lock);
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if (alert_backlight_reset)
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{ // set brightness to max if alert mode is on
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ddc_func.ddca_set_non_table_vcp_value
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(ddc_dh[i], 0x10, 0, 100);
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}
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}
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else free(d);
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}
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}
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return EINA_TRUE;
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err:
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return EINA_FALSE;
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}
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static Eina_Bool
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_ddc_init(void)
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{
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// .so.3 is ABI compatible twith .so.2 for out uses - see
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// https://www.ddcutil.com/c_api_99/ for changes between them
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ddc_lib = dlopen("libddcutil.so.3", RTLD_NOW | RTLD_LOCAL);
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if (!ddc_lib)
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ddc_lib = dlopen("libddcutil.so.2", RTLD_NOW | RTLD_LOCAL);
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if (!ddc_lib) return EINA_FALSE;
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#define SYM(_x) \
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do { \
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ddc_func._x = dlsym(ddc_lib, #_x); \
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if (!ddc_func._x) return EINA_FALSE; \
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} while (0)
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SYM(ddca_get_display_info_list2);
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SYM(ddca_free_display_info_list);
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SYM(ddca_open_display2);
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SYM(ddca_get_non_table_vcp_value);
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SYM(ddca_set_non_table_vcp_value);
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SYM(ddca_close_display);
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// optional api's
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#define SYM_OPT(_x) \
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do { \
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ddc_func._x = dlsym(ddc_lib, #_x); \
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} while (0)
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SYM_OPT(ddca_set_global_sleep_multiplier);
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// brute force modprobe this as it likely is needed - probe will fail
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// if this doesn't work or find devices anyway
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if (system("modprobe i2c-dev") == 0)
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usleep(200 * 1000); // and wait for the module to come up... 200ms
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if (!_ddc_probe()) return EINA_FALSE;
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return EINA_TRUE;
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}
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static Req *
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_req_alloc(const char *req, const char *params)
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{
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Req *r;
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if (!params) params = "";
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r = calloc(1, sizeof(Req) + strlen(req) + 1 + strlen(params) + 1);
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if (!r) return NULL;
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r->req = ((char *)r) + sizeof(Req);
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strcpy(r->req, req);
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r->params = r->req + strlen(r->req) + 1;
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strcpy(r->params, params);
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return r;
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}
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static void
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_request(const char *req, const char *params)
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{
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Eina_List *l;
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Req *r2, *r = _req_alloc(req, params);
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if (!r) return;
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eina_lock_take(&_devices_lock);
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EINA_LIST_FOREACH(_req, l, r2)
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{
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if (!strcmp(r2->req, r->req))
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{
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if (!strcmp(req, "refresh"))
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{
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_req = eina_list_remove_list(_req, l);
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free(r2);
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break;
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}
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else if ((!strcmp(req, "val-set")) ||
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(!strcmp(req, "val-get")))
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{
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if ((!strncmp(params, r2->params, 256)) &&
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(params[256] == ' '))
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{
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const char *space = strchr(params + 256 + 1, ' ');
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if (!strncmp(params, r2->params, (space - params)))
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{
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_req = eina_list_remove_list(_req, l);
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free(r2);
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break;
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}
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}
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}
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}
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}
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_req = eina_list_append(_req, r);
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eina_semaphore_release(&_worker_sem, 1);
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eina_lock_release(&_devices_lock);
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}
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static void
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_do_list(Ecore_Thread *th)
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{
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Eina_List *l;
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Dev *d;
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Req *r;
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Eina_Strbuf *sbuf;
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sbuf = eina_strbuf_new();
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if (sbuf)
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{
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eina_lock_take(&_devices_lock);
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EINA_LIST_FOREACH(_devices, l, d)
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{
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eina_strbuf_append(sbuf, d->edid);
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if (l->next) eina_strbuf_append(sbuf, " ");
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}
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eina_lock_release(&_devices_lock);
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r = _req_alloc("ddc-list", eina_strbuf_string_get(sbuf));
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if (r) ecore_thread_feedback(th, r);
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eina_strbuf_free(sbuf);
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}
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}
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static Eina_Bool
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_id_ok(int id)
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{
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if ((id < 0) || (id > 0xff)) return EINA_FALSE; // limited range
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if (id == 0x10) return EINA_TRUE; // backlight allowed
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return EINA_FALSE;
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}
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static Dev *
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_dev_find(const char *edid)
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{
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Eina_List *l;
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Dev *d;
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EINA_LIST_FOREACH(_devices, l, d)
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{
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if (!strcmp(d->edid, edid))
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{
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return d;
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}
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}
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return NULL;
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}
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static void
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_do_val_set(Ecore_Thread *th, const char *edid, int id, int val)
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{
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Dev *d;
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Req *r;
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int screen;
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char buf[512];
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if (!ddc_lib) goto err;
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if (!edid) goto err;
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if (!_id_ok(id)) goto err;
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if ((val < 0) || (val >= 65536)) goto err;
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eina_lock_take(&_devices_lock);
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d = _dev_find(edid);
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if (!d)
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{
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eina_lock_release(&_devices_lock);
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goto err;
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}
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screen = d->screen;
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eina_lock_release(&_devices_lock);
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if (ddc_func.ddca_set_non_table_vcp_value
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(ddc_dh[screen], id, (val >> 8) & 0xff, val & 0xff) == 0)
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{
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fprintf(stderr, "DDC: set ok %s 0x%02x %i\n", edid, id, val);
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snprintf(buf, sizeof(buf), "%s %i %i ok", edid, id, val);
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}
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else
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{
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fprintf(stderr, "DDC: set fail %s 0x%02x %i\n", edid, id, val);
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err:
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snprintf(buf, sizeof(buf), "%s %i %i err", edid, id, val);
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}
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r = _req_alloc("ddc-val-set", buf);
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if (r) ecore_thread_feedback(th, r);
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}
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static void
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_do_val_get(Ecore_Thread *th, const char *edid, int id)
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{
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Dev *d;
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Req *r;
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int screen, val;
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char buf[512];
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DDCA_Non_Table_Vcp_Value valrec;
|
|
|
|
if (!ddc_lib) goto err;
|
|
if (!edid) goto err;
|
|
if (!_id_ok(id)) goto err;
|
|
|
|
eina_lock_take(&_devices_lock);
|
|
d = _dev_find(edid);
|
|
if (!d)
|
|
{
|
|
eina_lock_release(&_devices_lock);
|
|
goto err;
|
|
}
|
|
screen = d->screen;
|
|
eina_lock_release(&_devices_lock);
|
|
|
|
if (ddc_func.ddca_get_non_table_vcp_value
|
|
(ddc_dh[screen], id, &valrec) == 0)
|
|
{
|
|
val = valrec.sl | (valrec.sh << 8);
|
|
fprintf(stderr, "DDC: get ok %s 0x%02x = %i\n", edid, id, val);
|
|
snprintf(buf, sizeof(buf), "%s %i %i", edid, id, val);
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr, "DDC: get fail %s 0x%02x\n", edid, id);
|
|
err:
|
|
snprintf(buf, sizeof(buf), "%s %i -1", edid, id);
|
|
}
|
|
r = _req_alloc("ddc-val-get", buf);
|
|
if (r) ecore_thread_feedback(th, r);
|
|
}
|
|
|
|
static void
|
|
_cb_worker(void *data EINA_UNUSED, Ecore_Thread *th)
|
|
{
|
|
Req *r;
|
|
|
|
_ddc_init();
|
|
_do_list(th);
|
|
|
|
for (;;)
|
|
{
|
|
Eina_List *local_req;
|
|
|
|
// wait for requests
|
|
eina_semaphore_lock(&_worker_sem);
|
|
local_req = NULL;
|
|
eina_lock_take(&_devices_lock);
|
|
if (_req)
|
|
{
|
|
local_req = _req;
|
|
_req = NULL;
|
|
}
|
|
eina_lock_release(&_devices_lock);
|
|
while (local_req)
|
|
{
|
|
r = local_req->data;
|
|
local_req = eina_list_remove_list(local_req, local_req);
|
|
if (!r) continue;
|
|
if (!strcmp(r->req, "list"))
|
|
{
|
|
_do_list(th);
|
|
}
|
|
else if (!strcmp(r->req, "refresh"))
|
|
{
|
|
int i = 0;
|
|
|
|
for (i = 0; i < 10; i++)
|
|
{
|
|
if (_ddc_probe()) break;
|
|
usleep(10 * 1000);
|
|
}
|
|
if (i == 10)
|
|
fprintf(stderr, "DDC: PROBE FAILED.\n");
|
|
}
|
|
else if (!strcmp(r->req, "val-set"))
|
|
{
|
|
int id, val;
|
|
char edid[257];
|
|
if (sscanf(r->params, "%256s %i %i", edid, &id, &val) == 3)
|
|
_do_val_set(th, edid, id, val);
|
|
}
|
|
else if (!strcmp(r->req, "val-get"))
|
|
{
|
|
int id;
|
|
char edid[257];
|
|
if (sscanf(r->params, "%256s %i", edid, &id) == 2)
|
|
_do_val_get(th, edid, id);
|
|
}
|
|
free(r);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
_cb_worker_message(void *data EINA_UNUSED, Ecore_Thread *th EINA_UNUSED, void *msg_data)
|
|
{
|
|
Req *r = msg_data;
|
|
|
|
if (!r) return;
|
|
e_system_inout_command_send(r->req, "%s", r->params);
|
|
free(r);
|
|
}
|
|
|
|
static void
|
|
_cb_worker_end(void *data EINA_UNUSED, Ecore_Thread *th EINA_UNUSED)
|
|
{
|
|
}
|
|
|
|
static void
|
|
_cb_worker_cancel(void *data EINA_UNUSED, Ecore_Thread *th EINA_UNUSED)
|
|
{
|
|
}
|
|
|
|
static void
|
|
_cb_ddc_list(void *data EINA_UNUSED, const char *params)
|
|
{
|
|
_request("list", params);
|
|
}
|
|
|
|
static void
|
|
_cb_ddc_refresh(void *data EINA_UNUSED, const char *params)
|
|
{
|
|
_request("refresh", params);
|
|
}
|
|
|
|
static void
|
|
_cb_ddc_val_set(void *data EINA_UNUSED, const char *params)
|
|
{
|
|
_request("val-set", params);
|
|
}
|
|
|
|
static void
|
|
_cb_ddc_val_get(void *data EINA_UNUSED, const char *params)
|
|
{
|
|
_request("val-get", params);
|
|
}
|
|
|
|
void
|
|
e_system_ddc_init(void)
|
|
{
|
|
eina_lock_new(&_devices_lock);
|
|
eina_semaphore_new(&_worker_sem, 0);
|
|
ecore_thread_feedback_run(_cb_worker, _cb_worker_message,
|
|
_cb_worker_end, _cb_worker_cancel,
|
|
NULL, EINA_TRUE);
|
|
e_system_inout_command_register("ddc-list", _cb_ddc_list, NULL);
|
|
e_system_inout_command_register("ddc-refresh", _cb_ddc_refresh, NULL);
|
|
e_system_inout_command_register("ddc-val-set", _cb_ddc_val_set, NULL);
|
|
e_system_inout_command_register("ddc-val-get", _cb_ddc_val_get, NULL);
|
|
}
|
|
|
|
void
|
|
e_system_ddc_shutdown(void)
|
|
{
|
|
// only shutdown things we really have to - no need to free mem etc.
|
|
}
|