123 lines
6.0 KiB
C
123 lines
6.0 KiB
C
/*
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* Copyright (c) 2014, 2016-2017, 2020, The Linux Foundation. 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 are
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* met:
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* * 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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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef EDID_H
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#define EDID_H
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/* HDMI EDID Information */
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#define BIT(nr) (1UL << (nr))
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#define MAX_EDID_BLOCKS 10
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#define MAX_SHORT_AUDIO_DESC_CNT 30
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#define MIN_AUDIO_DESC_LENGTH 3
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#define MIN_SPKR_ALLOCATION_DATA_LENGTH 3
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#define MAX_CHANNELS_SUPPORTED 8
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#define MAX_DISPLAY_DEVICES 3
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#define MAX_FRAME_BUFFER_NAME_SIZE 80
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#define MAX_CHAR_PER_INT 13
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#define PCM_CHANNEL_FL 1 /* Front left channel. */
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#define PCM_CHANNEL_FR 2 /* Front right channel. */
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#define PCM_CHANNEL_FC 3 /* Front center channel. */
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#define PCM_CHANNEL_LS 4 /* Left surround channel. */
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#define PCM_CHANNEL_RS 5 /* Right surround channel. */
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#define PCM_CHANNEL_LFE 6 /* Low frequency effect channel. */
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#define PCM_CHANNEL_CS 7 /* Center surround channel; Rear center channel. */
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#define PCM_CHANNEL_CB 7 /* Center back channel. */
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#define PCM_CHANNEL_LB 8 /* Left back channel; Rear left channel. */
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#define PCM_CHANNEL_RB 9 /* Right back channel; Rear right channel. */
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#define PCM_CHANNEL_TS 10 /* Top surround channel. */
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#define PCM_CHANNEL_CVH 11 /* Center vertical height channel. */
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#define PCM_CHANNEL_TFC 11 /* Top front center channel */
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#define PCM_CHANNEL_MS 12 /* Mono surround channel. */
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#define PCM_CHANNEL_FLC 13 /* Front left of center. */
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#define PCM_CHANNEL_FRC 14 /* Front right of center. */
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#define PCM_CHANNEL_RLC 15 /* Rear left of center. */
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#define PCM_CHANNEL_RRC 16 /* Rear right of center. */
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#define PCM_CHANNEL_LFE2 17 /* Second low frequency channel. */
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#define PCM_CHANNEL_SL 18 /* Side left channel. */
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#define PCM_CHANNEL_SR 19 /* Side right channel. */
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#define PCM_CHANNEL_TFL 20 /* Top front left channel. */
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#define PCM_CHANNEL_LVH 20 /* Left vertical height channel. */
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#define PCM_CHANNEL_TFR 21 /* Top front right channel. */
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#define PCM_CHANNEL_RVH 21 /* Right vertical height channel. */
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#define PCM_CHANNEL_TC 22 /* Top center channel. */
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#define PCM_CHANNEL_TBL 23 /* Top back left channel. */
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#define PCM_CHANNEL_TBR 24 /* Top back right channel. */
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#define PCM_CHANNEL_TSL 25 /* Top side left channel. */
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#define PCM_CHANNEL_TSR 26 /* Top side right channel. */
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#define PCM_CHANNEL_TBC 27 /* Top back center channel. */
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#define PCM_CHANNEL_BFC 28 /* Bottom front center channel. */
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#define PCM_CHANNEL_BFL 29 /* Bottom front left channel. */
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#define PCM_CHANNEL_BFR 30 /* Bottom front right channel. */
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#define PCM_CHANNEL_LW 31 /* Left wide channel. */
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#define PCM_CHANNEL_RW 32 /* Right wide channel. */
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#define PCM_CHANNEL_LSD 33 /* Left side direct channel. */
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#define PCM_CHANNEL_RSD 34 /* Right side direct channel. */
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#define MAX_HDMI_CHANNEL_CNT 8
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typedef enum edid_audio_format_id {
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LPCM = 1,
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AC3,
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MPEG1,
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MP3,
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MPEG2_MULTI_CHANNEL,
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AAC,
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DTS,
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ATRAC,
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SACD,
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DOLBY_DIGITAL_PLUS,
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DTS_HD,
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MAT,
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DST,
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WMA_PRO
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} edid_audio_format_id;
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typedef struct edid_audio_block_info {
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edid_audio_format_id format_id;
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int sampling_freq_bitmask;
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int bits_per_sample_bitmask;
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int channels;
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} edid_audio_block_info;
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typedef struct edid_audio_info {
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int audio_blocks;
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unsigned char speaker_allocation[MIN_SPKR_ALLOCATION_DATA_LENGTH];
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edid_audio_block_info audio_blocks_array[MAX_EDID_BLOCKS];
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char channel_map[MAX_CHANNELS_SUPPORTED];
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int channel_allocation;
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unsigned int channel_mask;
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} edid_audio_info;
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bool edid_is_supported_sr(edid_audio_info* info, int sr);
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bool edid_is_supported_bps(edid_audio_info* info, int bps);
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int edid_get_highest_supported_sr(edid_audio_info* info);
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bool edid_get_sink_caps(edid_audio_info* info, char *edid_data);
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#endif /* EDID_H */
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