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authorLennart Poettering <lennart@poettering.net>2010-01-14 20:31:00 +0100
committerLennart Poettering <lennart@poettering.net>2010-01-14 20:36:35 +0100
commite129f8577a405266a5b7d4a7ee75bd56dd43953e (patch)
tree16eef5eecdc8d27aa0c2838240c5bf1d027615a4
parent366e6d7e90d3bebc98a1af3cfb04b4cfc8cff6f5 (diff)
udev: use ID_MODEL_ENC instead of ID_MODEL if it is set
That way we should be able to make use of the nicer USB strings the USB hw provides. Fixes the issues pointed out in: https://tango.0pointer.de/pipermail/pulseaudio-discuss/2010-January/006248.html
-rw-r--r--src/modules/udev-util.c110
1 files changed, 110 insertions, 0 deletions
diff --git a/src/modules/udev-util.c b/src/modules/udev-util.c
index cc824465..eee5409a 100644
--- a/src/modules/udev-util.c
+++ b/src/modules/udev-util.c
@@ -58,6 +58,112 @@ static int read_id(struct udev_device *d, const char *n) {
return u;
}
+static int dehex(char x) {
+ if (x >= '0' && x <= '9')
+ return x - '0';
+
+ if (x >= 'A' && x <= 'F')
+ return x - 'A';
+
+ if (x >= 'a' && x <= 'f')
+ return x - 'a';
+
+ return -1;
+}
+
+static void proplist_sets_unescape(pa_proplist *p, const char *prop, const char *s) {
+ const char *f;
+ char *t, *r;
+ int c;
+
+ enum {
+ TEXT,
+ BACKSLASH,
+ EX,
+ FIRST
+ } state = TEXT;
+
+ /* The resulting string is definitely shorter than the source string */
+ r = pa_xnew(char, strlen(s)+1);
+
+ for (f = s, t = r; *f; f++) {
+
+ switch (state) {
+
+ case TEXT:
+ if (*f == '\\')
+ state = BACKSLASH;
+ else
+ *(t++) = *f;
+ break;
+
+ case BACKSLASH:
+ if (*f == 'x')
+ state = EX;
+ else {
+ *(t++) = '\\';
+ *(t++) = *f;
+ state = TEXT;
+ }
+ break;
+
+ case EX:
+ c = dehex(*f);
+
+ if (c < 0) {
+ *(t++) = '\\';
+ *(t++) = 'x';
+ *(t++) = *f;
+ state = TEXT;
+ } else
+ state = FIRST;
+
+ break;
+
+ case FIRST: {
+ int d = dehex(*f);
+
+ if (d < 0) {
+ *(t++) = '\\';
+ *(t++) = 'x';
+ *(t++) = *(f-1);
+ *(t++) = *f;
+ } else
+ *(t++) = (char) (c << 4) | d;
+
+ state = TEXT;
+ break;
+ }
+ }
+ }
+
+ switch (state) {
+
+ case TEXT:
+ break;
+
+ case BACKSLASH:
+ *(t++) = '\\';
+ break;
+
+ case EX:
+ *(t++) = '\\';
+ *(t++) = 'x';
+ break;
+
+ case FIRST:
+ *(t++) = '\\';
+ *(t++) = 'x';
+ *(t++) = *(f-1);
+ break;
+ }
+
+ *t = 0;
+
+ pa_proplist_sets(p, prop, r);
+ pa_xfree(r);
+}
+
int pa_udev_get_info(int card_idx, pa_proplist *p) {
int r = -1;
struct udev *udev;
@@ -107,6 +213,8 @@ int pa_udev_get_info(int card_idx, pa_proplist *p) {
if (!pa_proplist_contains(p, PA_PROP_DEVICE_VENDOR_NAME)) {
if ((v = udev_device_get_property_value(card, "ID_VENDOR_FROM_DATABASE")) && *v)
pa_proplist_sets(p, PA_PROP_DEVICE_VENDOR_NAME, v);
+ else if ((v = udev_device_get_property_value(card, "ID_VENDOR_ENC")) && *v)
+ proplist_sets_unescape(p, PA_PROP_DEVICE_VENDOR_NAME, v);
else if ((v = udev_device_get_property_value(card, "ID_VENDOR")) && *v)
pa_proplist_sets(p, PA_PROP_DEVICE_VENDOR_NAME, v);
}
@@ -118,6 +226,8 @@ int pa_udev_get_info(int card_idx, pa_proplist *p) {
if (!pa_proplist_contains(p, PA_PROP_DEVICE_PRODUCT_NAME)) {
if ((v = udev_device_get_property_value(card, "ID_MODEL_FROM_DATABASE")) && *v)
pa_proplist_sets(p, PA_PROP_DEVICE_PRODUCT_NAME, v);
+ else if ((v = udev_device_get_property_value(card, "ID_MODEL_ENC")) && *v)
+ proplist_sets_unescape(p, PA_PROP_DEVICE_PRODUCT_NAME, v);
else if ((v = udev_device_get_property_value(card, "ID_MODEL")) && *v)
pa_proplist_sets(p, PA_PROP_DEVICE_PRODUCT_NAME, v);
}