ACIL FM

Nama	Ukuran	Aksi
ipc4	-	Open
channel_map.h	1.96 MB	View DL Edit
control.h	4.92 MB	View DL Edit
dai-amd.h	770 B	View DL Edit
dai-imx.h	1.21 MB	View DL Edit
dai-intel.h	7.2 MB	View DL Edit
dai-mediatek.h	479 B	View DL Edit
dai.h	4.68 MB	View DL Edit
debug.h	1.43 MB	View DL Edit
ext_manifest.h	3.71 MB	View DL Edit
ext_manifest4.h	3.51 MB	View DL Edit
header.h	6.78 MB	View DL Edit
info.h	3.55 MB	View DL Edit
pm.h	1.15 MB	View DL Edit
stream.h	4.59 MB	View DL Edit
topology.h	8.52 MB	View DL Edit
trace.h	3.47 MB	View DL Edit
xtensa.h	1.01 MB	View DL Edit

Edit file: /usr/src/kernels/5.14.0-427.31.1.el9_4.x86_64/include/sound/sof/channel_map.h

/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause) */
/*
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * Copyright(c) 2019 Intel Corporation. All rights reserved.
 */

#ifndef __IPC_CHANNEL_MAP_H__
#define __IPC_CHANNEL_MAP_H__

#include <uapi/sound/sof/header.h>
#include <sound/sof/header.h>

/**
 * \brief Channel map, specifies transformation of one-to-many or many-to-one.
 *
 * In case of one-to-many specifies how the output channels are computed out of
 * a single source channel,
 * in case of many-to-one specifies how a single target channel is computed
 * from a multichannel input stream.
 *
 * Channel index specifies position of the channel in the stream on the 'one'
 * side.
 *
 * Ext ID is the identifier of external part of the transformation. Depending
 * on the context, it may be pipeline ID, dai ID, ...
 *
 * Channel mask describes which channels are taken into account on the "many"
 * side. Bit[i] set to 1 means that i-th channel is used for computation
 * (either as source or as a target).
 *
 * Channel mask is followed by array of coefficients in Q2.30 format,
 * one per each channel set in the mask (left to right, LS bit set in the
 * mask corresponds to ch_coeffs[0]).
 */
struct sof_ipc_channel_map {
	uint32_t ch_index;
	uint32_t ext_id;
	uint32_t ch_mask;
	uint32_t reserved;
	int32_t ch_coeffs[];
} __packed;

/**
 * \brief Complete map for each channel of a multichannel stream.
 *
 * num_ch_map Specifies number of items in the ch_map.
 * More than one transformation per a single channel is allowed (in case
 * multiple external entities are transformed).
 * A channel may be skipped in the transformation list, then it is filled
 * with 0's by the transformation function.
 */
struct sof_ipc_stream_map {
	struct sof_ipc_cmd_hdr hdr;
	uint32_t num_ch_map;
	uint32_t reserved[3];
	struct sof_ipc_channel_map ch_map[];
} __packed;

#endif /* __IPC_CHANNEL_MAP_H__ */

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