docs: escape angle brackets and fix @filename and \ref in doc comments

Escape <portname>, <tensorname>, <paramname>, <port>, <rules> and
similar angle-bracket placeholders that doxygen interprets as HTML
tags. Also escape @filename (unknown doxygen command) and fix the
pw_stream::process() reference in thread-loop.h.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

doc/dox/programs/pw-audioconvert.1.md

@@ -31,7 +31,7 @@ as the input format.
 Number of samples per iteration (default 4096)
 
 \par -P PROPERTIES | \--properties=PROPERTIES
-Set extra stream properties as a JSON object. One can also use @filename to
+Set extra stream properties as a JSON object. One can also use \@filename to
 read the JSON object with properties from filename.
 
 \par -c CHANNELS | \--channels=CHANNELS

src/modules/module-filter-chain.c

@@ -1009,16 +1009,16 @@ extern struct spa_handle_factory spa_filter_graph_factory;
  *            therefore at least be blocksize + retain samples large.
  * - `data` where the data for the tensor is comming from. There are different options
  *          based on the value of this file, selected with a prefix:
- *      - `port:<portname>` a new input/output port is created on the plugin with the
- *                          name <portname> and the data for the tensor will be obtained
+ *      - `port:\<portname\>` a new input/output port is created on the plugin with the
+ *                          name \<portname\> and the data for the tensor will be obtained
  *                          or copied from/to the port data.
- *      - `tensor:<tensorname>` the data of this tensor is copied from the given
- *                              <tensorname>. You can use this to copy output state
+ *      - `tensor:\<tensorname\>` the data of this tensor is copied from the given
+ *                              \<tensorname\>. You can use this to copy output state
  *                              info to the input state, for example.
- *      - `param:<paramname>` the data of this tensor is obtained from a parameter with
- *                            <paramname>. Currently only `rate` is a valid paramname,
+ *      - `param:\<paramname\>` the data of this tensor is obtained from a parameter with
+ *                            \<paramname\>. Currently only `rate` is a valid paramname,
  *                            which has the value of the filter samplerate.
- *      - `control:<portname>` a new input/output control port is created and the tensor
+ *      - `control:\<portname\>` a new input/output control port is created and the tensor
  *                             data will be obtained/copied from/to the control data.
  *
  * Here is an example of the silero VAD model:

src/modules/module-protocol-simple.c

@@ -61,7 +61,7 @@
  *  - `local.ifname = <str>`: interface name to use
  *  - `local.ifaddress = <str>`: interface address to use
  *  - `server.address = []`: an array of server addresses to listen on as
- *                            tcp:(<ip>:)<port>.
+ *                            tcp:(\<ip\>:)\<port\>.
  *  - `capture.props`: optional properties for the capture stream
  *  - `playback.props`: optional properties for the playback stream
  *

src/modules/module-raop-discover.c

@@ -46,7 +46,7 @@
  *    false by default.
  * - `raop.latency.ms` = latency for all streams in microseconds. This
  *    can be overwritten in the stream rules.
- * - `stream.rules` = <rules>: match rules, use create-stream actions. See
+ * - `stream.rules` = \<rules\>: match rules, use create-stream actions. See
  *   \ref page_module_raop_sink for module properties.
  *
  * ## Example configuration

src/modules/module-rtp-sap.c

@@ -59,7 +59,7 @@
  * - `source.ip =<str>`: source IP address, default "0.0.0.0"
  * - `net.ttl = <int>`: TTL to use, default 1
  * - `net.loop = <bool>`: loopback multicast, default false
- * - `stream.rules` = <rules>: match rules, use create-stream and announce-stream actions
+ * - `stream.rules` = \<rules\>: match rules, use create-stream and announce-stream actions
  * - `sap.max-sessions = <int>`: maximum number of concurrent send/receive sessions to track
  * - `sap.preamble-extra = [strings]`: extra attributes to add to the atomic SDP preamble
  * - `sap.end-extra = [strings]`: extra attributes to add to the end of the SDP message

src/modules/module-sendspin-send.c

@@ -72,7 +72,7 @@
  * - `sendspin.delay`: the delay to add to clients in seconds. Default 5.0
  * - `node.always-process = <bool>`: true to send silence even when not connected.
  * - `stream.props = {}`: properties to be passed to all the stream
- * - `stream.rules` = <rules>: match rules, use the create-stream action to
+ * - `stream.rules` = \<rules\>: match rules, use the create-stream action to
  *                    make a stream for the client.
  *
  * ## General options

src/modules/module-snapcast-discover.c

@@ -60,7 +60,7 @@
  *
  * - `snapcast.discover-local` = allow discovery of local services as well.
  *    false by default.
- * - `stream.rules` = <rules>: match rules, use create-stream actions. See
+ * - `stream.rules` = \<rules\>: match rules, use create-stream actions. See
  *   \ref page_module_protocol_simple for module properties.
  *
  * ### stream.rules matches

src/modules/module-vban-recv.c

@@ -55,7 +55,7 @@
  * - `node.always-process = <bool>`: true to receive even when not running
  * - `sess.latency.msec = <str>`: target network latency in milliseconds, default 100
  * - `stream.props = {}`: properties to be passed to all the stream
- * - `stream.rules` = <rules>: match rules, use create-stream actions.
+ * - `stream.rules` = \<rules\>: match rules, use create-stream actions.
  *
  * ### stream.rules matches
  *

src/pipewire/thread-loop.h

@@ -63,7 +63,7 @@ extern "C" {
  *
  * An exception to this is for the data processing callbacks, which are
  * explcitly marked as being emitted from the data realtime threads. One
- * such callback is the \ref pw_stream::process() callback when the
+ * such callback is the `process()` callback of \ref pw_stream when the
  * \ref PW_STREAM_FLAG_RT_PROCESS is set.
  *
  */