From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- include/sound/sof/channel_map.h | 61 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 include/sound/sof/channel_map.h (limited to 'include/sound/sof/channel_map.h') diff --git a/include/sound/sof/channel_map.h b/include/sound/sof/channel_map.h new file mode 100644 index 000000000..d363f0ca6 --- /dev/null +++ b/include/sound/sof/channel_map.h @@ -0,0 +1,61 @@ +/* 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 +#include + +/** + * \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__ */ -- cgit v1.2.3