aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorPřemysl Eric Janouch <p@janouch.name>2022-07-25 22:39:54 +0200
committerPřemysl Eric Janouch <p@janouch.name>2022-07-25 22:41:03 +0200
commitc291e4b6ac5cfedd72fcdbb938a29d41e28fc855 (patch)
tree56f3a0df16daad085faa751295a856c0e5bcf288
parent81c3c9ec3ff12febbb14ff6d806b2eae4c304980 (diff)
downloaddesktop-tools-master.tar.gz
desktop-tools-master.tar.xz
desktop-tools-master.zip
input-switch: enable requesting current valuesHEADorigin/mastermaster
-rw-r--r--input-switch.c88
1 files changed, 56 insertions, 32 deletions
diff --git a/input-switch.c b/input-switch.c
index da93670..5788f4a 100644
--- a/input-switch.c
+++ b/input-switch.c
@@ -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.
@@ -28,11 +28,60 @@
#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)
{
struct vcp_feature_readout readout = {};
@@ -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))