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input-switch: enable requesting current values

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Přemysl Eric Janouch 2022-07-25 22:39:54 +02:00
parent 81c3c9ec3f
commit c291e4b6ac
Signed by: p
GPG Key ID: A0420B94F92B9493
1 changed files with 56 additions and 32 deletions
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88
input-switch.c
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@ -1,7 +1,7 @@
/*
* input-switch.c: switches display input via DDC/CI
*
* Copyright (c) 2017, Přemysl Eric Janouch <p@janouch.name>
* Copyright (c) 2017 - 2022, Přemysl Eric Janouch <p@janouch.name>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted.
@ -28,10 +28,59 @@
#include "ddc-ci.c"
#include <dirent.h>
// This list is from the MCCS 2.2a specification
struct
{
int code; ///< Input code
const char *name; ///< Input name
int index; ///< Input index
}
g_inputs[] =
{
{ 0x01, "VGA", 1, }, // Analog video (R/G/B) 1
{ 0x02, "VGA", 2, }, // Analog video (R/G/B) 2
{ 0x03, "DVI", 1, }, // Digital video (TMDS) 1 DVI 1
{ 0x04, "DVI", 2, }, // Digital video (TMDS) 2 DVI 2
{ 0x05, "composite", 1, }, // Composite video 1
{ 0x06, "composite", 2, }, // Composite video 2
{ 0x07, "S-Video", 1, }, // S-video 1
{ 0x08, "S-Video", 2, }, // S-video 2
{ 0x09, "tuner", 1, }, // Tuner 1
{ 0x0A, "tuner", 2, }, // Tuner 2
{ 0x0B, "tuner", 3, }, // Tuner 3
{ 0x0C, "component", 1, }, // Component video (YPbPr/YCbCr) 1
{ 0x0D, "component", 2, }, // Component video (YPbPr/YCbCr) 2
{ 0x0E, "component", 3, }, // Component video (YPbPr/YCbCr) 3
{ 0x0F, "DP", 1, }, // DisplayPort 1
{ 0x10, "DP", 2, }, // DisplayPort 2
{ 0x11, "HDMI", 1, }, // Digital Video (TMDS) 3 HDMI 1
{ 0x12, "HDMI", 2, }, // Digital Video (TMDS) 4 HDMI 2
{ 0x15, "bnq-tb", 1, }, // Thunderbolt on BenQ PD3220U (no spec)
};
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
typedef bool (*ActionFunc) (int fd, int param, struct error **);
static bool
get_input_source (int fd, int input, struct error **e)
{
struct vcp_feature_readout readout = {};
if (!vcp_get_feature (fd, VCP_INPUT_SOURCE, &readout, e))
return false;
(void) input;
for (size_t i = 0; i < N_ELEMENTS (g_inputs); i++)
if (g_inputs[i].code == readout.cur)
{
printf ("input is %s %d\n", g_inputs[i].name, g_inputs[i].index);
return true;
}
printf ("input is %d\n", readout.cur);
return true;
}
static bool
set_input_source (int fd, int input, struct error **e)
{
@ -114,36 +163,6 @@ i2c (ActionFunc action, int param)
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// This list is from the MCCS 2.2a specification
struct
{
int code; ///< Input code
const char *name; ///< Input name
int index; ///< Input index
}
g_inputs[] =
{
{ 0x01, "vga", 1, }, // Analog video (R/G/B) 1
{ 0x02, "vga", 2, }, // Analog video (R/G/B) 2
{ 0x03, "dvi", 1, }, // Digital video (TMDS) 1 DVI 1
{ 0x04, "dvi", 2, }, // Digital video (TMDS) 2 DVI 2
{ 0x05, "composite", 1, }, // Composite video 1
{ 0x06, "composite", 2, }, // Composite video 2
{ 0x07, "s-video", 1, }, // S-video 1
{ 0x08, "s-video", 2, }, // S-video 2
{ 0x09, "tuner", 1, }, // Tuner 1
{ 0x0A, "tuner", 2, }, // Tuner 2
{ 0x0B, "tuner", 3, }, // Tuner 3
{ 0x0C, "component", 1, }, // Component video (YPbPr/YCbCr) 1
{ 0x0D, "component", 2, }, // Component video (YPbPr/YCbCr) 2
{ 0x0E, "component", 3, }, // Component video (YPbPr/YCbCr) 3
{ 0x0F, "dp", 1, }, // DisplayPort 1
{ 0x10, "dp", 2, }, // DisplayPort 2
{ 0x11, "hdmi", 1, }, // Digital Video (TMDS) 3 HDMI 1
{ 0x12, "hdmi", 2, }, // Digital Video (TMDS) 4 HDMI 2
{ 0x15, "bnq-tb", 1, }, // Thunderbolt on BenQ PD3220U (no spec)
};
int
main (int argc, char *argv[])
{
@ -151,9 +170,14 @@ main (int argc, char *argv[])
if (argc <= 1)
{
printf ("Usage: %s <input> [<index>]\n", argv[0]);
printf ("Usage: %s {? | INPUT [INDEX]}\n", argv[0]);
exit (EXIT_FAILURE);
}
if (!strcmp (argv[1], "?"))
{
i2c (get_input_source, -1);
exit (EXIT_SUCCESS);
}
unsigned long input_source = 0;
if (xstrtoul (&input_source, argv[1], 10))