117 lines
4.3 KiB
C
117 lines
4.3 KiB
C
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/*
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* SPDX-License-Identifier: MIT
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* Copyright (C) 2004 - 2021 AJA Video Systems, Inc.
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*/
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////////////////////////////////////////////////////////////
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//
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// Filename: ntv2dispalyid.h
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// Purpose: HDMI edid parser
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//
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///////////////////////////////////////////////////////////////
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#ifndef NTV2_DISPLAYID_H
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#define NTV2_DISPLAYID_H
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#include "ntv2system.h"
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enum ntv2_displayid_protocol
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{
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ntv2_displayid_protocol_unknown,
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ntv2_displayid_protocol_dvi, /* no CEA-861 extension (therefore, no audio, RGB only) */
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ntv2_displayid_protocol_hdmiv1, /* adds CEA-861 extension rev 1, timing only */
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ntv2_displayid_protocol_hdmi, /* adds CEA-861 extension rev >1, audio, YCbCr and DeepColor options */
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ntv2_displayid_protocol_size
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};
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struct ntv2_displayid_video
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{
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enum ntv2_displayid_protocol protocol; /* DVI vs HDMI */
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bool underscan; /* true if sink device underscans IT video formats by default */
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bool ycbcr_444; /* true if sink device supports YCbCr 4:4:4 in addition to RGB */
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bool ycbcr_422; /* true if sink device supports YCbCr 4:2:2 in addition to RGB */
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bool ycbcr_420; /* true if sink device supports YCbCr 4:2:0 in addition to RGB */
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bool dc_48bit; /* true if sink device supports 48-bit (16 bits per component) RGB */
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bool dc_36bit; /* true if sink device supports 36-bit (12 bits per component) RGB */
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bool dc_30bit; /* true if sink device supports 30-bit (10 bits per component) RGB */
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bool dc_y444; /* true if the 48-bit, 36-bit, and 30-bit flags ALSO apply to YCbCr inputs */
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uint32_t max_clock_freq; /* maximum TMDS clock frequency supported by sink device (MHz / 0 = unknown) */
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bool graphics; /* true if sink device has special graphics processing */
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bool photo; /* true if sink device has special photo processing */
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bool cinema; /* true if sink device has special cinema processing */
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bool game; /* true if sink device has special game processing */
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uint32_t video_latency; /* video latency (mSec / 0 = unknown) */
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uint32_t audio_latency; /* audio latency (mSec / 0 = unknown) */
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uint32_t int_video_latency; /* interlaced video latency (mSec / 0 = unknown) */
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uint32_t int_audio_latency; /* interlaced audio latency (mSec / 0 = unknown) */
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bool quad_30; /* true if sink device supports 1920x2160 29.97/30 */
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bool quad_25; /* true if sink device supports 1920x2160 25 */
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bool quad_24; /* true if sink device supports 1920x2160 23.98/24 */
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bool four_24; /* true if sink device supports 2048x2160 24 */
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uint32_t max_tmds_csc; /* maximum TMDS character rate supported above 340 Mcsc (0 = not supported) */
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bool osd_disparity; /* true if sink supports receiving 3d osd displarity in the hf-vsif */
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bool dual_view; /* true if sink supports 3d dual view */
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bool indep_view; /* true if sink supports 3d independent view */
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bool lte_scramble; /* true if sink supports scrambling below 340 Mcsc */
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bool rr_capable; /* true if sink supports scdc read request */
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bool scdc_present; /* true if sink supports scdc */
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bool dc_30bit_420; /* true if sink supports 30 bit 420 */
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bool dc_36bit_420; /* true if sink supports 36 bit 420 */
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bool dc_48bit_420; /* true if sink supports 48 bit 420 */
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};
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struct ntv2_displayid_audio
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{
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enum ntv2_displayid_protocol protocol; /* DVI vs HDMI */
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bool basic_audio; /* true if sink device supports basic audio */
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uint32_t num_lpcm_channels; /* max number of channels from LPCM Short Audio Descriptors (if present) */
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};
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/**
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* HDMI EDID register callback function
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*
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* Callback to obtain EDID register data.
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*
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* @param[in] pContext Callback context
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* @param[in] blockNum Register block number
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* @param[in] regNum Register number within the block
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* @param[out] regVal Register value
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* @return AJA_STATUS_SUCCESS if register read works
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*/
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typedef bool ntv2_displayid_callback(void* context, uint8_t block_num, uint8_t reg_num, uint8_t* reg_val);
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struct ntv2_displayid
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{
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struct ntv2_displayid_video video;
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struct ntv2_displayid_audio audio;
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ntv2_displayid_callback* callback;
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void* context;
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};
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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void ntv2_displayid_config(struct ntv2_displayid* ntv2_did, ntv2_displayid_callback* callback, void* context);
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void ntv2_displayid_clear(struct ntv2_displayid* ntv2_did);
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bool ntv2_displayid_update(struct ntv2_displayid* ntv2_did);
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#ifdef __cplusplus
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}
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#endif
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#endif
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