doc: move spa/foo.md to spa-foo.md

Flatten the hierarchy a bit to make it easier to handle.

doc/architecture.md

@@ -34,7 +34,7 @@ described in an external protocol file but implemented directly in
 a protocol plugin. Protocol plugins can be added to add new
 objects or even protocols when required.
 
-Messages are encoded with [SPA PODs](spa/pod.md), which make it
+Messages are encoded with [SPA PODs](spa-pod.md), which make it
 possible to encode complex objects with right types.
 
 Events from the server can be a reply to a method or can be emitted

doc/index.md

@@ -8,7 +8,7 @@ found here.
 Start the tutorial about how to use the PipeWire API
 [here](tutorial-index.md).
 
-Notes about the design of the low-level [SPA](spa/design.md)
+Notes about the design of the low-level [SPA](spa-design.md)
 layer.
 
 Some Resources:

doc/meson.build

@@ -55,10 +55,10 @@ extra_docs = [
   'tutorial4.md',
   'tutorial5.md',
   'tutorial6.md',
-  'spa/index.md',
-  'spa/design.md',
-  'spa/pod.md',
-  'spa/buffer.md',
+  'spa-index.md',
+  'spa-design.md',
+  'spa-pod.md',
+  'spa-buffer.md',
   'pulseaudio.md',
 ]
 

doc/spa-index.md

@@ -4,6 +4,6 @@ SPA (Simple Plugin API) is an extensible API to implement all kinds of
 plugins. It is inspired by many other plugin APIs, mostly LV2 and
 GStreamer.
 
-* SPA [Design](design.md)
-* [Data format](pod.md)
-* SPA [Buffers](buffer.md)
+* SPA [Design](spa-design.md)
+* [Data format](spa-pod.md)
+* SPA [Buffers](spa-buffer.md)

doc/tutorial3.md

@@ -85,7 +85,7 @@ This triggers the `sync` method on the core object with id
 Because this is a method on a proxy object, it will be executed
 asynchronously and the returns value will reflect this. PipeWire
 uses the return values of the underlying SPA (Simple Plugin API)
-helper objects (See also [error codes](spa/design.md#error-codes)).
+helper objects (See also [error codes](spa-design.md#error-codes)).
 
 Because all messages on the PipeWire server are handled sequentially,
 the sync method will be executed after all previous methods are

doc/tutorial4.md

@@ -208,7 +208,7 @@ which means that it enumerates the possible formats for this stream. We have
 only one, a Signed 16 bit stereo format at 44.1KHz.
 
 We use `spa_format_audio_raw_build()` which is a helper function to make the param
-with the builder. See [SPA POD](spa/pod.md) for more information about how to
+with the builder. See [SPA POD](spa-pod.md) for more information about how to
 make these POD objects.
 
 Now we're ready to connect the stream and run the main loop:
@@ -291,7 +291,7 @@ static void on_process(void *userdata)
 }
 ```
 
-Check out the docs for [buffers](spa/buffer.md) for more information
+Check out the docs for [buffers](spa-buffer.md) for more information
 about how to work with buffers.
 
 Try to change the number of channels, samplerate or format; the stream

doc/tutorial5.md

@@ -246,7 +246,7 @@ We have something similar for the framerate.
 Note that there are other video parameters that we don't specify here. This
 means that we don't have any restrictions for their values.
 
-See [SPA POD](spa/pod.md) for more information about how to make these
+See [SPA POD](spa-pod.md) for more information about how to make these
 POD objects.
 
 Now we're ready to connect the stream and run the main loop: