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b1ebfeffe7
Also correct definition of vendor specific block data (maximum payload is 28 bytes beyond the registration identifier)
407 lines
10 KiB
C
407 lines
10 KiB
C
/* vim: set noet ts=8 sts=8 sw=8 : */
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/*
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* Copyright © 2010 Saleem Abdulrasool <compnerd@compnerd.org>.
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* Copyright © 2010 Genesi USA, Inc. <matt@genesi-usa.com>.
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. 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 IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* Header file for EIA CEA 861-E structures and definitions */
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#ifndef LINUX_CEA861_H
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#define LINUX_CEA861_H
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#include <linux/edid.h>
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#if !defined(__LITTLE_ENDIAN_BITFIELD)
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#warning "structures defined and packed for little-endian byte order"
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#endif
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#define CEA81_NO_DTDS_PRESENT (0x04)
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static const u8 CEA861_OUI_REGISTRATION_ID_HDMI_LSB[] = { 0x03, 0x0C, 0x00 };
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enum cea861_data_block_type {
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CEA861_DATA_BLOCK_TYPE_RESERVED0,
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CEA861_DATA_BLOCK_TYPE_AUDIO,
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CEA861_DATA_BLOCK_TYPE_VIDEO,
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CEA861_DATA_BLOCK_TYPE_VENDOR_SPECIFIC,
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CEA861_DATA_BLOCK_TYPE_SPEAKER_ALLOCATION,
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CEA861_DATA_BLOCK_TYPE_VESA_DTC,
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CEA861_DATA_BLOCK_TYPE_RESERVED6,
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CEA861_DATA_BLOCK_TYPE_EXTENDED,
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};
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struct __packed cea861_data_block_header {
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unsigned length : 5;
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unsigned tag : 3;
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};
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struct __packed cea861_vendor_specific_data_block {
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struct cea861_data_block_header header;
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u8 ieee_registration[3];
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u8 data[28];
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};
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struct __packed cea861_video_data_block {
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struct cea861_data_block_header header;
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/* actual length in header, the index stops us from walking out of
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* spec but not out of bounds
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*/
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u8 svd[31];
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};
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struct __packed cea861_timing_block {
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/* CEA Extension Header */
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u8 tag;
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u8 revision;
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u8 dtd_offset;
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/* Global Declarations */
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#if defined(__LITTLE_ENDIAN_BITFIELD)
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unsigned native_dtds : 4;
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unsigned yuv_422_supported : 1;
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unsigned yuv_444_supported : 1;
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unsigned basic_audio_supported : 1;
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unsigned underscan_supported : 1;
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#else
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unsigned underscan_supported : 1;
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unsigned basic_audio_supported : 1;
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unsigned yuv_444_supported : 1;
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unsigned yuv_422_supported : 1;
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unsigned native_dtds : 4;
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#endif
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u8 data[123];
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u8 checksum;
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};
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/* HDMI Constants and Structures */
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#define HDMI_PACKET_TYPE_INFO_FRAME (0x80)
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#define HDMI_PACKET_CHECKSUM (0x100)
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struct __packed hdmi_vsdb {
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struct cea861_data_block_header header;
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u8 ieee_registration_id[3];
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unsigned port_configuration_b : 4;
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unsigned port_configuration_a : 4;
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unsigned port_configuration_d : 4;
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unsigned port_configuration_c : 4;
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/* extension fields */
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unsigned dvi_dual_link : 1;
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unsigned : 1;
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unsigned : 1;
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unsigned yuv_444_supported : 1;
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unsigned colour_depth_30_bit : 1;
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unsigned colour_depth_36_bit : 1;
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unsigned colour_depth_48_bit : 1;
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unsigned audio_info_supported : 1;
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u8 max_tmds_clock;
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unsigned : 1;
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unsigned : 1;
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unsigned : 1;
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unsigned : 1;
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unsigned : 1;
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unsigned : 1;
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unsigned interlaced_latency_fields : 1;
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unsigned latency_fields : 1;
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u8 video_latency;
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u8 audio_latency;
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u8 interlaced_video_latency;
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u8 interlaced_audio_latency;
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u8 reserved[];
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};
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/* InfoFrame type constants */
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enum info_frame_type {
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INFO_FRAME_TYPE_RESERVED,
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INFO_FRAME_TYPE_VENDOR_SPECIFIC,
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INFO_FRAME_TYPE_AUXILIARY_VIDEO_INFO,
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INFO_FRAME_TYPE_SOURCE_PRODUCT_DESCRIPTION,
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INFO_FRAME_TYPE_AUDIO,
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INFO_FRAME_TYPE_MPEG,
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};
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/* Common InfoFrame header information */
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struct __packed info_frame_header {
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u8 type;
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u8 version;
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u8 length;
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u8 chksum;
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};
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/* AVI InfoFrame (v2) */
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#define CEA861_AVI_INFO_FRAME_VERSION (0x02)
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enum scan_information {
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SCAN_INFORMATION_UNKNOWN,
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SCAN_INFORMATION_OVERSCANNED,
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SCAN_INFORMATION_UNDERSCANNED,
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};
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enum bar_info {
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BAR_INFO_INVALID,
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BAR_INFO_VERTICAL,
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BAR_INFO_HORIZONTAL,
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BAR_INFO_BOTH,
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};
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enum pixel_format {
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PIXEL_FORMAT_RGB, /* default */
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PIXEL_FORMAT_YUV_422,
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PIXEL_FORMAT_YUV_444,
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};
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enum active_format_description {
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ACTIVE_FORMAT_DESCRIPTION_UNSCALED = 0x08,
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ACTIVE_FORMAT_DESCRIPTION_4_3_CENTERED = 0x09,
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ACTIVE_FORMAT_DESCRIPTION_16_9_CENTERED = 0x10,
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ACTIVE_FORMAT_DESCRIPTION_14_9_CENTERED = 0x11,
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};
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enum picture_aspect_ratio {
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PICTURE_ASPECT_RATIO_UNSCALED,
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PICTURE_ASPECT_RATIO_4_3,
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PICTURE_ASPECT_RATIO_16_9,
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};
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enum colorimetry {
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COLORIMETRY_UNKNOWN,
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COLORIMETRY_BT601,
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COLORIMETRY_BT709,
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COLORIMETRY_EXTENDED,
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};
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enum non_uniform_picture_scaling {
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NON_UNIFORM_PICTURE_SCALING_NONE,
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NON_UNIFORM_PICTURE_SCALING_HORIZONTAL,
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NON_UNIFORM_PICTURE_SCALING_VERTICAL,
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NON_UNIFORM_PICTURE_SCALING_BOTH,
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};
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/* quantization range are the same flag values for RGB and YCC */
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enum quantization_range {
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QUANTIZATION_RANGE_LIMITED,
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QUANTIZATION_RANGE_FULL,
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};
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enum extended_colorimetry {
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EXTENDED_COLORIMETRY_BT601,
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EXTENDED_COLORIMETRY_BT709,
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};
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enum video_format {
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VIDEO_FORMAT_UNKNOWN,
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};
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struct __packed avi_info_frame {
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struct info_frame_header header;
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unsigned scan_information : 2;
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unsigned bar_info : 2;
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unsigned active_format_info_valid : 1;
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unsigned pixel_format : 2;
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unsigned dbyte1_reserved0 : 1;
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unsigned active_format_description : 4;
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unsigned picture_aspect_ratio : 2;
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unsigned colorimetry : 2;
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unsigned non_uniform_picture_scaling : 2;
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unsigned rgb_quantization_range : 2;
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unsigned extended_colorimetry : 3;
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unsigned it_content_present : 1;
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unsigned video_format : 7;
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unsigned dbyte4_reserved0 : 1;
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unsigned pixel_repetition_factor : 4; /* value - 1 */
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unsigned content_type : 2;
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unsigned ycc_quantizaton_range : 2;
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u16 end_of_top_bar;
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u16 start_of_bottom_bar;
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u16 end_of_left_bar;
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u16 start_of_right_bar;
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};
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/* SPD InfoFrame */
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#define CEA861_SPD_INFO_FRAME_VERSION (0x01)
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enum spd_source_information {
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SPD_SOURCE_UNKNOWN,
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SPD_SOURCE_DIGITAL_STB,
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SPD_SOURCE_DVD_PLAYER,
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SPD_SOURCE_D_VHS,
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SPD_SOURCE_HDD_VIDEORECORDER,
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SPD_SOURCE_DVC,
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SPD_SOURCE_DSC,
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SPD_SOURCE_VIDEOCD,
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SPD_SOURCE_GAME,
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SPD_SOURCE_PC_GENERAL,
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SPD_SOURCE_BLURAY_SACD,
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SPD_SOURCE_HD_DVD,
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SPD_SOURCE_PMP,
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};
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struct __packed spd_info_frame {
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struct info_frame_header header;
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u8 vendor[8];
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u8 description[16];
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u8 source_device_info;
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};
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/* Audio InfoFrame */
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#define CEA861_AUDIO_INFO_FRAME_VERSION (0x01)
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enum audio_coding_type {
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CODING_TYPE_REFER_STREAM_HEADER,
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CODING_TYPE_PCM,
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CODING_TYPE_AC3,
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CODING_TYPE_MPEG1_LAYER12,
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CODING_TYPE_MP3,
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CODING_TYPE_MPEG2,
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CODING_TYPE_AAC_LC,
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CODING_TYPE_DTS,
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CODING_TYPE_ATRAC,
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CODING_TYPE_DSD,
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CODING_TYPE_E_AC3,
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CODING_TYPE_DTS_HD,
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CODING_TYPE_MLP,
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CODING_TYPE_DST,
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CODING_TYPE_WMA_PRO,
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CODING_TYPE_EXTENDED,
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};
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enum audio_sample_frequency {
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FREQUENCY_REFER_STREAM_HEADER,
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FREQUENCY_32_KHZ,
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FREQUENCY_44_1_KHZ,
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FREQUENCY_CD = FREQUENCY_44_1_KHZ,
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FREQUENCY_48_KHZ,
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FREQUENCY_88_2_KHZ,
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FREQUENCY_96_KHZ,
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FREQUENCY_176_4_KHZ,
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FREQUENCY_192_KHZ,
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};
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enum audio_sample_size {
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SAMPLE_SIZE_REFER_STREAM_HEADER,
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SAMPLE_SIZE_16_BIT,
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SAMPLE_SIZE_20_BIT,
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SAMPLE_SIZE_24_BIT,
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};
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enum audio_coding_extended_type {
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CODING_TYPE_HE_AAC = 1,
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CODING_TYPE_HE_AACv2,
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CODING_TYPE_MPEG_SURROUND,
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};
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/* TODO define speaker allocation bits */
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#define CHANNEL_COUNT_REFER_STREAM_HEADER (0x00)
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#define CHANNEL_ALLOCATION_STEREO (0x00)
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enum audio_downmix {
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DOWNMIX_PERMITTED,
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DOWNMIX_PROHIBITED,
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};
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enum audio_lfe_level {
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LFE_LEVEL_UNKNOWN,
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LFE_LEVEL_0dB,
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LFE_LEVEL_PLUS10dB,
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LFE_LEVEL_RESERVED,
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};
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struct __packed audio_info_frame {
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struct info_frame_header header;
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unsigned channel_count : 3;
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unsigned future13 : 1;
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unsigned coding_type : 4;
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unsigned sample_size : 2;
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unsigned sample_frequency : 3;
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unsigned future25 : 1;
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unsigned future26 : 1;
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unsigned future27 : 1;
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unsigned format_code_extension : 5;
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unsigned future35 : 1;
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unsigned future36 : 1;
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unsigned future37 : 1;
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u8 channel_allocation;
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unsigned lfe_playback_level : 2;
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unsigned future52 : 1;
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unsigned level_shift : 4; /* 0-15dB */
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unsigned down_mix_inhibit : 1;
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u8 future_byte_6_10[5];
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};
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static inline void cea861_checksum_hdmi_info_frame(u8 * const info_frame)
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{
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struct info_frame_header * const header =
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(struct info_frame_header *) info_frame;
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int i;
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u8 crc;
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crc = (HDMI_PACKET_TYPE_INFO_FRAME + header->type) +
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header->version + (header->length - 1);
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for (i = 1; i < header->length; i++)
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crc += info_frame[i];
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header->chksum = HDMI_PACKET_CHECKSUM - crc;
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}
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#endif /* LINUX_CEA861_H */
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