1 files changed, 118 insertions, 0 deletions
diff --git a/pkgs/patches/0002-wpctl-allow-modifying-volume-levels-using-percentage.patch b/pkgs/patches/0002-wpctl-allow-modifying-volume-levels-using-percentage.patch
new file mode 100644
index 0000000..9e51797
--- /dev/null
+++ b/pkgs/patches/0002-wpctl-allow-modifying-volume-levels-using-percentage.patch
@@ -0,0 +1,118 @@
+From 43d8753c5ef4cbd4d2f6558182b290d083644521 Mon Sep 17 00:00:00 2001
+From: Varnit Singh <varnitcls@gmail.com>
+Date: Wed, 8 Jun 2022 09:25:45 +0000
+Subject: [PATCH 2/2] wpctl: allow modifying volume levels using
+ percentage/step amount.
+
+---
+ src/tools/wpctl.c | 63 ++++++++++++++++++++++++++++++++++++++++++++---
+ 1 file changed, 59 insertions(+), 4 deletions(-)
+
+diff --git a/src/tools/wpctl.c b/src/tools/wpctl.c
+index 9f7c6bb..0f5bc8c 100644
+--- a/src/tools/wpctl.c
++++ b/src/tools/wpctl.c
+@@ -45,6 +45,7 @@ static struct {
+       guint64 id;
+       gfloat volume;
+       gboolean is_pid;
++      gchar type;
+     } set_volume;
+ 
+     struct {
+@@ -846,11 +847,38 @@ set_volume_parse_positional (gint argc, gchar ** argv, GError **error)
+ {
+   if (argc < 4) {
+     g_set_error (error, wpctl_error_domain_quark(), 0,
+-        "ID and VOL are required");
++        "ID and VOL[%%][-/+] are required");
++    return FALSE;
++  }
++
++  GRegex *regex = g_regex_new ("^(\\d*\\.?\\d*)(%?)([-+]?)$", 0, 0, NULL);
++  GMatchInfo *info = NULL;
++
++  if (g_regex_match(regex, argv[3], 0, &info)) {
++    cmdline.set_volume.volume = strtof(g_match_info_fetch(info, 1), NULL);
++    cmdline.set_volume.type = 'a';
++    
++    if (g_strcmp0(g_match_info_fetch(info, 2), "%") == 0) {
++      cmdline.set_volume.type = 'p';
++    }
++
++    if (g_strcmp0(g_match_info_fetch(info, 3), "-") == 0) {
++      cmdline.set_volume.volume = -(cmdline.set_volume.volume);
++      if (cmdline.set_volume.type != 'p') {
++        cmdline.set_volume.type = 's';
++      }
++    } else if (g_strcmp0(g_match_info_fetch(info, 3), "+") == 0 && cmdline.set_volume.type != 'p') {
++      cmdline.set_volume.type = 's';
++    }
++    g_match_info_free (info);
++    g_regex_unref (regex);
++  } else {
++    g_regex_unref (regex);
++    g_set_error (error, wpctl_error_domain_quark(), 0,
++        "Invalid volume argument. See wpctl set-volume --help");
+     return FALSE;
+   }
+ 
+-  cmdline.set_volume.volume = strtof (argv[3], NULL);
+   return parse_id (!cmdline.set_volume.is_pid, false, argv[2],
+       &cmdline.set_volume.id, error);
+ }
+@@ -874,6 +902,7 @@ do_set_volume (WpCtl * self, WpPipewireObject *proxy)
+   g_autoptr (GError) error = NULL;
+   GVariant *variant = NULL;
+   gboolean res = FALSE;
++  gdouble curr_volume = 1.0;
+   guint32 id = wp_proxy_get_bound_id (WP_PROXY (proxy));
+ 
+   if (WP_IS_ENDPOINT (proxy)) {
+@@ -885,6 +914,27 @@ do_set_volume (WpCtl * self, WpPipewireObject *proxy)
+     id = atoi (str);
+   }
+ 
++  g_signal_emit_by_name (mixer_api, "get-volume", id, &variant);
++    if (!variant) {
++    fprintf (stderr, "Node %d does not support volume\n", id);
++    g_clear_pointer (&variant, g_variant_unref);
++    return FALSE;
++  }
++  g_variant_lookup (variant, "volume", "d", &curr_volume);
++  g_clear_pointer (&variant, g_variant_unref);
++
++  if (cmdline.set_volume.type == 'a') {
++    cmdline.set_volume.volume = cmdline.set_volume.volume;
++  } else if (cmdline.set_volume.type == 's') {
++    cmdline.set_volume.volume = (cmdline.set_volume.volume + curr_volume);
++  } else if (cmdline.set_volume.type == 'p') {
++    gfloat delta = (cmdline.set_volume.volume) * (curr_volume);
++    cmdline.set_volume.volume = (curr_volume + delta);
++  }
++  if (cmdline.set_volume.volume < 0) {
++    cmdline.set_volume.volume = 0.0;
++  }
++
+   g_variant_builder_add (&b, "{sv}", "volume",
+       g_variant_new_double (cmdline.set_volume.volume));
+   variant = g_variant_builder_end (&b);
+@@ -1266,8 +1316,13 @@ static const struct subcommand {
+   },
+   {
+     .name = "set-volume",
+-    .positional_args = "ID VOL",
+-    .summary = "Sets the volume of ID to VOL (floating point, 1.0 is 100%%)",
++    .positional_args = "ID VOL[%%][-/+]",
++    .summary = "Sets the volume of ID from specified argument. "
++               "(floating point, 1.0 is 100%%)\n  VOL%%[-/+] - "
++               "Step up/down volume by specified percent (Example:"
++               " 0.5%%+)\n  VOL[-/+] - Step up/down volume by"
++               " specified value (Example: 0.5+)\n  VOL - Set "
++               "volume as the specified value (Example: 0.5)",
+     .description = NULL,
+     .entries = {
+       { "pid", 'p', G_OPTION_FLAG_NONE, G_OPTION_ARG_NONE,
+-- 
+2.36.1
+