linux/drivers/isdn/mISDN/dsp_pipeline.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * dsp_pipeline.c: pipelined audio processing
 *
 * Copyright (C) 2007, Nadi Sarrar
 *
 * Nadi Sarrar <[email protected]>
 */

#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/string.h>
#include <linux/mISDNif.h>
#include <linux/mISDNdsp.h>
#include <linux/export.h>
#include "dsp.h"
#include "dsp_hwec.h"

struct dsp_pipeline_entry { … };
struct dsp_element_entry { … };

static LIST_HEAD(dsp_elements);

/* sysfs */
static const struct class elements_class = …;

static ssize_t
attr_show_args(struct device *dev, struct device_attribute *attr, char *buf)
{ … }

static struct device_attribute element_attributes[] = …;

static void
mISDN_dsp_dev_release(struct device *dev)
{ … }

int mISDN_dsp_element_register(struct mISDN_dsp_element *elem)
{ … }
EXPORT_SYMBOL(…);

void mISDN_dsp_element_unregister(struct mISDN_dsp_element *elem)
{ … }
EXPORT_SYMBOL(…);

int dsp_pipeline_module_init(void)
{ … }

void dsp_pipeline_module_exit(void)
{ … }

int dsp_pipeline_init(struct dsp_pipeline *pipeline)
{ … }

static inline void _dsp_pipeline_destroy(struct dsp_pipeline *pipeline)
{ … }

void dsp_pipeline_destroy(struct dsp_pipeline *pipeline)
{ … }

int dsp_pipeline_build(struct dsp_pipeline *pipeline, const char *cfg)
{ … }

void dsp_pipeline_process_tx(struct dsp_pipeline *pipeline, u8 *data, int len)
{ … }

void dsp_pipeline_process_rx(struct dsp_pipeline *pipeline, u8 *data, int len,
			     unsigned int txlen)
{ … }