audio: drc: switch to source/sink processing API

Convert the DRC module from the legacy audio_stream processing API
to the modern sof_source/sof_sink API.

Author: piotrhoppeintel

src/audio/drc/drc.c

@@ -11,6 +11,7 @@
 #include <sof/audio/format.h>
 #include <sof/audio/ipc-config.h>
 #include <sof/audio/pipeline.h>
+#include <sof/audio/sink_source_utils.h>
 #include <sof/ipc/msg.h>
 #include <sof/lib/memory.h>
 #include <sof/lib/uuid.h>
@@ -269,25 +270,30 @@ __cold static int drc_get_config(struct processing_module *mod,
 }
 
 static int drc_process(struct processing_module *mod,
-		       struct input_stream_buffer *input_buffers,
-		       int num_input_buffers,
-		       struct output_stream_buffer *output_buffers,
-		       int num_output_buffers)
+		       struct sof_source **sources,
+		       int num_of_sources,
+		       struct sof_sink **sinks,
+		       int num_of_sinks)
 {
 	struct drc_comp_data *cd = module_get_private_data(mod);
 	struct comp_dev *dev = mod->dev;
-	struct audio_stream *source = input_buffers[0].data;
-	struct audio_stream *sink = output_buffers[0].data;
-	int frames = input_buffers[0].size;
+	struct sof_source *source = sources[0];
+	struct sof_sink *sink = sinks[0];
+	struct cir_buf_source source_buf;
+	struct cir_buf_sink sink_buf;
+	size_t source_frame_bytes = source_get_frame_bytes(source);
+	size_t sink_frame_bytes = sink_get_frame_bytes(sink);
+	size_t source_bytes, sink_bytes, bytes;
+	uint32_t frames;
 	int ret;
 
 	comp_dbg(dev, "entry");
 
 	/* Check for changed configuration */
 	if (comp_is_new_data_blob_available(cd->model_handler)) {
 		cd->config = comp_get_data_blob(cd->model_handler, NULL, NULL);
-		ret = drc_setup(mod, audio_stream_get_channels(source),
-				audio_stream_get_rate(source));
+		ret = drc_setup(mod, source_get_channels(source),
+				source_get_rate(source));
 		if (ret < 0) {
 			comp_err(dev, "drc_copy(), failed DRC setup");
 			return ret;
@@ -309,10 +315,32 @@ static int drc_process(struct processing_module *mod,
 	/* Control pass-though in processing function with switch control */
 	cd->enabled = cd->config && cd->config->params.enabled && cd->enable_switch;
 
-	cd->drc_func(mod, source, sink, frames);
+	frames = source_sink_avail_frames_aligned(source, sink);
+	if (!frames)
+		return 0;
+
+	source_bytes = frames * source_frame_bytes;
+	sink_bytes = frames * sink_frame_bytes;
+
+	/* acquire source and sink circular buffers for the whole period */
+	ret = source_get_data(source, source_bytes, &source_buf.ptr,
+			      &source_buf.buf_start, &bytes);
+	if (ret < 0)
+		return ret;
+	source_buf.buf_end = (const char *)source_buf.buf_start + bytes;
+
+	ret = sink_get_buffer(sink, sink_bytes, &sink_buf.ptr, &sink_buf.buf_start, &bytes);
+	if (ret < 0) {
+		source_release_data(source, 0);
+		return ret;
+	}
+	sink_buf.buf_end = (char *)sink_buf.buf_start + bytes;
+
+	cd->drc_func(mod, &source_buf, &sink_buf, frames);
 
-	/* calc new free and available */
-	module_update_buffer_position(&input_buffers[0], &output_buffers[0], frames);
+	/* commit the consumed and produced data */
+	source_release_data(source, source_bytes);
+	sink_commit_buffer(sink, sink_bytes);
 	return 0;
 }
 
@@ -367,6 +395,7 @@ static int drc_prepare(struct processing_module *mod,
 	cd->source_format = audio_stream_get_frm_fmt(&sourceb->stream);
 	channels = audio_stream_get_channels(&sinkb->stream);
 	rate = audio_stream_get_rate(&sinkb->stream);
+	cd->channels = channels;
 
 	/* Initialize DRC */
 	comp_info(dev, "source_format=%d", cd->source_format);
@@ -414,7 +443,7 @@ static int drc_reset(struct processing_module *mod)
 static const struct module_interface drc_interface = {
 	.init = drc_init,
 	.prepare = drc_prepare,
-	.process_audio_stream = drc_process,
+	.process = drc_process,
 	.set_configuration = drc_set_config,
 	.get_configuration = drc_get_config,
 	.reset = drc_reset,

src/audio/drc/drc.h

@@ -15,6 +15,8 @@
 #include "drc_user.h"
 
 struct audio_stream;
+struct cir_buf_source;
+struct cir_buf_sink;
 struct comp_dev;
 
 /* Define CONFIG_DRC_MAX_PRE_DELAY_FRAMES for the build purposes without Kconfig,
@@ -66,8 +68,8 @@ struct drc_state {
 };
 
 typedef void (*drc_func)(struct processing_module *mod,
-			 const struct audio_stream *source,
-			 struct audio_stream *sink,
+			 const struct cir_buf_source *source,
+			 struct cir_buf_sink *sink,
 			 uint32_t frames);
 
 /* DRC component private data */
@@ -79,6 +81,7 @@ struct drc_comp_data {
 	bool enabled;                       /**< control processing via blob and switch */
 	bool enable_switch;                 /**< enable switch state */
 	enum sof_ipc_frame source_format;   /**< source frame format */
+	int channels;                       /**< number of channels */
 	drc_func drc_func;                  /**< processing function */
 };
 
@@ -91,8 +94,8 @@ extern const struct drc_proc_fnmap drc_proc_fnmap[];
 extern const size_t drc_proc_fncount;
 
 void drc_default_pass(struct processing_module *mod,
-		      const struct audio_stream *source,
-		      struct audio_stream *sink, uint32_t frames);
+		      const struct cir_buf_source *source,
+		      struct cir_buf_sink *sink, uint32_t frames);
 /**
  * \brief Returns DRC processing function.
  */