buf: move walking flag to sof_audio_buffer structure

walking flag is not really needed for data buffering,
rather for pipeline iteration procedures, so it should
not be in sof_audio_buffer structure. But before in order
to make possible usage of other buffer types than comp_buffer
before pipeline2.0 is ready, it must be kept there.

Signed-off-by: Marcin Szkudlinski <marcin.szkudlinski@intel.com>

src/audio/google/google_rtc_audio_processing.c

@@ -751,7 +751,7 @@ static int trigger_handler(struct processing_module *mod, int cmd)
 	/* Ignore and halt propagation if we get a trigger from the
 	 * playback pipeline: not for us. (Never happens on IPC4)
 	 */
-	if (cd->ref_comp_buffer->walking)
+	if (cd->ref_comp_buffer->audio_buffer.walking)
 		return PPL_STATUS_PATH_STOP;
 #endif
 

src/audio/pipeline/pipeline-graph.c

@@ -415,7 +415,7 @@ int pipeline_for_each_comp(struct comp_dev *current,
 		 * across CPUs. See further comment below.
 		 */
 		dcache_writeback_invalidate_region(uncache_to_cache(buffer), sizeof(*buffer));
-		if (buffer->walking)
+		if (buffer->audio_buffer.walking)
 			continue;
 
 		buffer_comp = buffer_get_comp(buffer, dir);
@@ -428,12 +428,12 @@ int pipeline_for_each_comp(struct comp_dev *current,
 		if (buffer_comp &&
 		    (!ctx->skip_incomplete || buffer_comp->pipeline) &&
 		    ctx->comp_func) {
-			buffer->walking = true;
+			buffer->audio_buffer.walking = true;
 
 			err = ctx->comp_func(buffer_comp, buffer,
 					     ctx, dir);
 
-			buffer->walking = false;
+			buffer->audio_buffer.walking = false;
 		}
 
 		if (err < 0 || err == PPL_STATUS_PATH_STOP)

src/include/sof/audio/audio_buffer.h

@@ -71,6 +71,12 @@ struct sof_audio_buffer {
 
 	/* virtual methods */
 	const struct audio_buffer_ops *ops;
+
+	/*
+	 * legacy params, needed for pipeline binding/iterating, not for data buffering
+	 * should not be in struct sof_audio_buffer at all, kept for pipeline2.0 transition
+	 */
+	bool walking;		/**< indicates if the buffer is being walked */
 };
 
 #if CONFIG_PIPELINE_2_0

src/include/sof/audio/buffer.h

@@ -144,8 +144,6 @@ struct comp_buffer {
 
 	/* runtime stream params */
 	uint16_t chmap[SOF_IPC_MAX_CHANNELS];	/**< channel map - SOF_CHMAP_ */
-
-	bool walking;		/**< indicates if the buffer is being walked */
 };
 
 /* Only to be used for synchronous same-core notifications! */