module: source: Add level frame alignment helpers

Add source_align_frames_round_up() and source_align_frames_round_nearest()
helpers based on existing audio_stream_* alignment utilities, adapting them
to operate on source api.

Signed-off-by: Adrian Warecki <adrian.warecki@intel.com>

Author: softwarecki

src/include/module/audio/source_api.h

@@ -339,4 +339,29 @@ static inline enum sof_audio_buffer_state source_get_state(const struct sof_sour
 	return source->audio_stream_params->state;
 }
 
+static inline uint32_t source_align_frames_round_up(struct sof_source *source, uint32_t frames)
+{
+	uint16_t align = source->audio_stream_params->align_frame_cnt;
+	uint32_t aligned_frames;
+
+	if (!align)
+		return frames;
+
+	aligned_frames = ROUND_DOWN(frames, align);
+	if (aligned_frames < frames)
+		aligned_frames += align;
+
+	return aligned_frames;
+}
+
+static inline uint32_t source_align_frames_round_nearest(struct sof_source *source, uint32_t frames)
+{
+	uint16_t align = source->audio_stream_params->align_frame_cnt;
+
+	if (!align)
+		return frames;
+
+	return ROUND_DOWN(frames + (align >> 1), align);
+}
+
 #endif /* __MODULE_AUDIO_SOURCE_API_H__ */