60 lines
2.1 KiB
C
60 lines
2.1 KiB
C
/* $NetBSD: hdmireg.h,v 1.1 2015/03/28 14:09:59 jmcneill Exp $ */
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/*
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* Copyright (c) 2011 Jared D. McNeill <jmcneill@invisible.ca>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef _HDMIREG_H
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#define _HDMIREG_H
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struct hdmi_audio_infoframe_header {
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uint8_t packet_type;
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uint8_t version;
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uint8_t length;
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} __packed;
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#define HDMI_AI_PACKET_TYPE 0x84
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#define HDMI_AI_VERSION 0x01
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#define HDMI_AI_LENGTH 0x0a
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struct hdmi_audio_infoframe {
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struct hdmi_audio_infoframe_header header;
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uint8_t checksum;
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uint8_t ct_cc;
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uint8_t sf_ss;
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uint8_t ct_ext;
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uint8_t ca;
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uint8_t dm_inh_lsv;
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uint8_t reserved;
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} __packed;
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#define HDMI_AI_CHANNEL_COUNT(ai) ((ai)->ct_cc & 0x07)
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#define HDMI_AI_CODING_TYPE(ai) ((ai)->ct_cc & 0xf0)
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#define HDMI_AI_SAMPLE_SIZE(ai) ((ai)->sf_ss & 0x03)
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#define HDMI_AI_SAMPLE_FREQUENCY(ai) ((ai)->sf_ss & 0x18)
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#define HDMI_AI_LSV(ai) ((ai)->dm_inh_lsv & 0x78)
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#define HDMI_AI_DM_INH(ai) ((ai)->dm_inh_lsv & 0x80)
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#endif /* !_HDMIREG_H */
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