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/*
* Copyright (C) 2012 Team XBMC
* http://xbmc.org
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with XBMC; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "AEELDParser.h"
#include "AEDeviceInfo.h"
#include "utils/EndianSwap.h"
#include <string.h>
#include <stdio.h>
#define GRAB_BITS(buf, byte, lowbit, bits) ((buf[byte] >> (lowbit)) & ((1 << (bits)) - 1))
typedef struct
{
uint8_t eld_ver;
uint8_t baseline_eid_len;
uint8_t cea_edid_ver;
uint8_t monitor_name_length;
uint8_t sad_count;
uint8_t conn_type;
bool s_ai;
bool hdcp;
uint8_t audio_sync_delay;
bool rlrc; /* rear left and right of center */
bool flrc; /* front left and right of center */
bool rc; /* rear center */
bool rlr; /* rear left and right */
bool fc; /* front center */
bool lfe; /* LFE */
bool flr; /* front left and right */
uint64_t port_id;
char mfg_name[4];
uint16_t product_code;
std::string monitor_name;
} ELDHeader;
#define ELD_VER_CEA_816D 2
#define ELD_VER_PARTIAL 31
#define ELD_EDID_VER_NONE 0
#define ELD_EDID_VER_CEA_861 1
#define ELD_EDID_VER_CEA_861_A 2
#define ELD_EDID_VER_CEA_861_BCD 3
#define ELD_CONN_TYPE_HDMI 0
#define ELD_CONN_TYPE_DP 1
#define ELD_CONN_TYPE_RESERVED1 2
#define ELD_CONN_TYPE_RESERVED2 3
#define CEA_861_FORMAT_RESERVED1 0
#define CEA_861_FORMAT_LPCM 1
#define CEA_861_FORMAT_AC3 2
#define CEA_861_FORMAT_MPEG1 3
#define CEA_861_FORMAT_MP3 4
#define CEA_861_FORMAT_MPEG2 5
#define CEA_861_FORMAT_AAC 6
#define CEA_861_FORMAT_DTS 7
#define CEA_861_FORMAT_ATRAC 8
#define CEA_861_FORMAT_SACD 9
#define CEA_861_FORMAT_EAC3 10
#define CEA_861_FORMAT_DTSHD 11
#define CEA_861_FORMAT_MLP 12
#define CEA_861_FORMAT_DST 13
#define CEA_861_FORMAT_WMAPRO 14
#define CEA_861_FORMAT_RESERVED2 15
#define rtrim(s) s.erase(std::find_if(s.rbegin(), s.rend(), std::not1(std::ptr_fun<int, int>(std::isspace))).base(), s.end())
void CAEELDParser::Parse(const uint8_t *data, size_t length, CAEDeviceInfo& info)
{
ELDHeader header;
header.eld_ver = (data[0 ] & 0xF8) >> 3;
if (header.eld_ver != ELD_VER_CEA_816D && header.eld_ver != ELD_VER_PARTIAL)
return;
header.baseline_eid_len = data[2 ];
header.cea_edid_ver = (data[4 ] & 0xE0) >> 5;
header.monitor_name_length = data[4 ] & 0x1F;
header.sad_count = (data[5 ] & 0xF0) >> 4;
header.conn_type = (data[5 ] & 0x0C) >> 2;
header.s_ai = (data[5 ] & 0x02) == 0x02;
header.hdcp = (data[5 ] & 0x01) == 0x01;
header.audio_sync_delay = data[6 ];
header.rlrc = (data[7 ] & 0x40) == 0x40;
header.flrc = (data[7 ] & 0x20) == 0x20;
header.rc = (data[7 ] & 0x10) == 0x10;
header.rlr = (data[7 ] & 0x08) == 0x08;
header.fc = (data[7 ] & 0x04) == 0x04;
header.lfe = (data[7 ] & 0x02) == 0x02;
header.flr = (data[7 ] & 0x01) == 0x01;
header.port_id = Endian_SwapLE64(*((uint64_t*)(data + 8)));
header.mfg_name[0] = 'A' + ((data[16] >> 2) & 0x1F) - 1;
header.mfg_name[1] = 'A' + (((data[16] << 3) | (data[17] >> 5)) & 0x1F) - 1;
header.mfg_name[2] = 'A' + (data[17] & 0x1F) - 1;
header.mfg_name[3] = '\0';
header.product_code = Endian_SwapLE16(*((uint16_t*)(data + 18)));
switch (header.conn_type)
{
case ELD_CONN_TYPE_HDMI: info.m_deviceType = AE_DEVTYPE_HDMI; break;
case ELD_CONN_TYPE_DP : info.m_deviceType = AE_DEVTYPE_DP ; break;
}
info.m_displayNameExtra = header.mfg_name;
if (header.monitor_name_length <= 16)
{
header.monitor_name.assign((const char *)(data + 20), header.monitor_name_length);
rtrim(header.monitor_name);
if (header.monitor_name.length() > 0)
{
info.m_displayNameExtra.append(" ");
info.m_displayNameExtra.append(header.monitor_name);
if (header.conn_type == ELD_CONN_TYPE_HDMI)
info.m_displayNameExtra.append(" on HDMI" );
else
info.m_displayNameExtra.append(" on DisplayPort");
}
}
if (header.flr)
{
if (!info.m_channels.HasChannel(AE_CH_FL))
info.m_channels += AE_CH_FL;
if (!info.m_channels.HasChannel(AE_CH_FR))
info.m_channels += AE_CH_FR;
}
if (header.lfe)
if (!info.m_channels.HasChannel(AE_CH_LFE))
info.m_channels += AE_CH_LFE;
if (header.fc)
if (!info.m_channels.HasChannel(AE_CH_FC))
info.m_channels += AE_CH_FC;
if (header.rlr)
{
if (!info.m_channels.HasChannel(AE_CH_BL))
info.m_channels += AE_CH_BL;
if (!info.m_channels.HasChannel(AE_CH_BR))
info.m_channels += AE_CH_BR;
}
if (header.rc)
if (!info.m_channels.HasChannel(AE_CH_BC))
info.m_channels += AE_CH_BC;
if (header.flrc)
{
if (!info.m_channels.HasChannel(AE_CH_FLOC))
info.m_channels += AE_CH_FLOC;
if (!info.m_channels.HasChannel(AE_CH_FROC))
info.m_channels += AE_CH_FROC;
}
if (header.rlrc)
{
if (!info.m_channels.HasChannel(AE_CH_BLOC))
info.m_channels += AE_CH_BLOC;
if (!info.m_channels.HasChannel(AE_CH_BROC))
info.m_channels += AE_CH_BROC;
}
const uint8_t *sad = data + 20 + header.monitor_name_length;
for(uint8_t i = 0; i < header.sad_count; ++i)
{
uint8_t offset = i * 3;
uint8_t formatCode = (sad[offset + 0] >> 3) & 0xF;
//uint8_t channelCount = (sad[offset + 0] & 0x7) + 1;
//uint8_t sampleRates = sad[offset + 1];
AEDataFormat fmt = AE_FMT_INVALID;
switch (formatCode)
{
case CEA_861_FORMAT_AAC : fmt = AE_FMT_AAC ; break;
case CEA_861_FORMAT_AC3 : fmt = AE_FMT_AC3 ; break;
case CEA_861_FORMAT_DTS : fmt = AE_FMT_DTS ; break;
case CEA_861_FORMAT_DTSHD: fmt = AE_FMT_DTSHD ; break;
case CEA_861_FORMAT_EAC3 : fmt = AE_FMT_EAC3 ; break;
case CEA_861_FORMAT_LPCM : fmt = AE_FMT_LPCM ; break;
case CEA_861_FORMAT_MLP : fmt = AE_FMT_TRUEHD; break;
}
if (fmt == AE_FMT_INVALID)
continue;
if (std::find(info.m_dataFormats.begin(), info.m_dataFormats.end(), fmt) == info.m_dataFormats.end())
info.m_dataFormats.push_back(fmt);
}
}
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