[PATCH 0/1] MR5472: winecoreaudio: Correctly handle devices whose UID contains non-ASCII characters.

[Brendan Shanks (＠bshanks)]

This should fix audio issues for users with certain USB audio devices (possibly including the Creative Pebble V3 and RØDECaster Pro II).

The Core Audio UID can contain non-ASCII characters and is converted to UTF-8 by `unix_get_endpoint_ids`. But we were using `CFStringGetLength` to calculate the resulting size, which returns the length in UTF-16 code pairs. This resulted in any UIDs containing non-ASCII characters being truncated, `dev_id_from_device` later failing, and audio not working.
Instead use `CFStringGetBytes` to calculate the resulting UTF-8 size, and to do the conversion.

[PATCH 1/1] winecoreaudio: Correctly handle devices whose UID contains non-ASCII characters.

[Brendan Shanks]

From: Brendan Shanks

---
 dlls/winecoreaudio.drv/coreaudio.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/dlls/winecoreaudio.drv/coreaudio.c b/dlls/winecoreaudio.drv/coreaudio.c
index d78744455a8..a79a0d16839 100644
--- a/dlls/winecoreaudio.drv/coreaudio.c
+++ b/dlls/winecoreaudio.drv/coreaudio.c
@@ -325,7 +325,12 @@ static NTSTATUS unix_get_endpoint_ids(void *args)

for(i = 0; i < params->num; i++){
         const SIZE_T name_len = CFStringGetLength(info[i].name) + 1;
-        const SIZE_T device_len = CFStringGetLength(info[i].uid) + 1;
+        CFIndex device_len;
+
+        CFStringGetBytes(info[i].uid, CFRangeMake(0, CFStringGetLength(info[i].uid)), kCFStringEncodingUTF8,
+                         0, false, NULL, 0, &device_len);
+        device_len++;   /* for null terminator */
+
         needed += name_len * sizeof(WCHAR) + ((device_len + 1) & ~1);

if(needed <= params->size){
@@ -336,7 +341,8 @@ static NTSTATUS unix_get_endpoint_ids(void *args)
             offset += name_len * sizeof(WCHAR);

endpoint->device = offset;
-            CFStringGetCString(info[i].uid, (char *)params->endpoints + offset, params->size - offset, kCFStringEncodingUTF8);
+            CFStringGetBytes(info[i].uid, CFRangeMake(0, CFStringGetLength(info[i].uid)), kCFStringEncodingUTF8,
+                             0, false, (UInt8 *)params->endpoints + offset, params->size - offset, NULL);
             ((char *)params->endpoints)[offset + device_len - 1] = '\0';
             offset += (device_len + 1) & ~1;