self.sn = []
# Received data
self.cache = []
+ # Random read offset
+ self.offset = 0
+ # Extensions
+ self.extension = 0
+ self.ext_sn = [[]]
+ self.ext_cache = [[]]
def start(self):
self.out_ann = self.register(srd.OUTPUT_ANN)
def decode(self, ss, es, data):
cmd, data = data
+ if cmd == 'ADDRESS WRITE' and data == 0x50:
+ self.state = 'offset'
+ self.ss = ss
+ return
+
+ if cmd == 'ADDRESS READ' and data == 0x50:
+ if self.extension > 0:
+ self.state = 'extensions'
+ s = str(self.extension)
+ t = ["Extension: " + s, "X: " + s, s]
+ else:
+ self.state = 'header'
+ t = ["EDID"]
+ self.put(ss, es, self.out_ann, [ANN_SECTIONS, t])
+ return
+
+ if cmd == 'DATA WRITE' and self.state == 'offset':
+ self.offset = data
+ self.extension = self.offset // 128
+ self.cnt = self.offset % 128
+ if self.extension > 0:
+ ext = self.extension - 1
+ l = len(self.ext_sn[ext])
+ # Truncate or extend to self.cnt.
+ self.sn = self.ext_sn[ext][0:self.cnt] + [0] * max(0, self.cnt - l)
+ self.cache = self.ext_cache[ext][0:self.cnt] + [0] * max(0, self.cnt - l)
+ else:
+ l = len(self.sn)
+ self.sn = self.sn[0:self.cnt] + [0] * max(0, self.cnt - l)
+ self.cache = self.cache[0:self.cnt] + [0] * max(0, self.cnt - l)
+ ss = self.ss if self.ss else ss
+ s = str(data)
+ t = ["Offset: " + s, "O: " + s, s]
+ self.put(ss, es, self.out_ann, [ANN_SECTIONS, t])
+ return
+
# We only care about actual data bytes that are read (for now).
if cmd != 'DATA READ':
return
self.cnt += 1
- self.sn.append([ss, es])
- self.cache.append(data)
- # debug
+ if self.extension > 0:
+ self.ext_sn[self.extension - 1].append([ss, es])
+ self.ext_cache[self.extension - 1].append(data)
+ else:
+ self.sn.append([ss, es])
+ self.cache.append(data)
- if self.state is None:
+ if self.state is None or self.state == 'header':
# Wait for the EDID header
if self.cnt >= OFF_VENDOR:
if self.cache[-8:] == EDID_HEADER:
self.put(ss, es, self.out_ann, [0, ['Checksum: %d (%s)' % (
self.cache[self.cnt-1], csstr)]])
self.state = 'extensions'
+
elif self.state == 'extensions':
- pass
+ cache = self.ext_cache[self.extension - 1]
+ sn = self.ext_sn[self.extension - 1]
+ v = cache[self.cnt - 1]
+ if self.cnt == 1:
+ if v == 2:
+ self.put(ss, es, self.out_ann, [1, ['Extensions Tag', 'Tag']])
+ else:
+ self.put(ss, es, self.out_ann, [1, ['Bad Tag']])
+ elif self.cnt == 2:
+ self.put(ss, es, self.out_ann, [1, ['Version']])
+ self.put(ss, es, self.out_ann, [0, [str(v)]])
+ elif self.cnt == 3:
+ self.put(ss, es, self.out_ann, [1, ['DTD offset']])
+ self.put(ss, es, self.out_ann, [0, [str(v)]])
+ elif self.cnt == 4:
+ self.put(ss, es, self.out_ann, [1, ['Format support | DTD count']])
+ support = "Underscan: {0}, {1} Audio, YCbCr: {2}".format(
+ "yes" if v & 0x80 else "no",
+ "Basic" if v & 0x40 else "No",
+ ["None", "422", "444", "422+444"][(v & 0x30) >> 4])
+ self.put(ss, es, self.out_ann, [0, ['{0}, DTDs: {1}'.format(support, v & 0xf)]])
+ elif self.cnt <= cache[2]:
+ if self.cnt == cache[2]:
+ self.put(sn[4][0], es, self.out_ann, [1, ['Data block collection']])
+ self.decode_data_block_collection(cache[4:], sn[4:])
+ elif (self.cnt - cache[2]) % 18 == 0:
+ n = (self.cnt - cache[2]) / 18
+ if n <= cache[3] & 0xf:
+ self.put(sn[self.cnt - 18][0], es, self.out_ann, [1, ['DTD']])
+ self.decode_descriptors(-18)
+
+ elif self.cnt == 127:
+ dtd_last = cache[2] + (cache[3] & 0xf) * 18
+ self.put(sn[dtd_last][0], es, self.out_ann, [1, ['Padding']])
+ elif self.cnt == 128:
+ checksum = sum(cache) % 256
+ self.put(ss, es, self.out_ann, [0, ['Checksum: %d (%s)' % (
+ cache[self.cnt-1], 'Wrong' if checksum else 'OK')]])
def ann_field(self, start, end, annotation):
- self.put(self.sn[start][0], self.sn[end][1],
- self.out_ann, [ANN_FIELDS, [annotation]])
+ annotation = annotation if isinstance(annotation, list) else [annotation]
+ if self.extension:
+ sn = self.ext_sn[self.extension - 1]
+ else:
+ sn = self.sn
+ self.put(sn[start][0], sn[end][1],
+ self.out_ann, [ANN_FIELDS, annotation])
def lookup_pnpid(self, pnpid):
pnpid_file = os.path.join(os.path.dirname(__file__), 'pnpids.txt')
datestr += 'week %d, ' % self.cache[offset]
datestr += str(1990 + self.cache[offset+1])
if datestr:
- self.ann_field(offset, offset+1, 'Manufactured ' + datestr)
+ self.ann_field(offset, offset+1, ['Manufactured ' + datestr, datestr])
def decode_basicdisplay(self, offset):
# Video input definition
self.ann_field(offset, offset + 15,
'Supported standard modes: %s' % modestr[:-2])
- def decode_detailed_timing(self, offset):
- if offset == -72 and self.have_preferred_timing:
+ def decode_detailed_timing(self, cache, sn, offset, is_first):
+ if is_first and self.have_preferred_timing:
# Only on first detailed timing descriptor
section = 'Preferred'
else:
section = 'Detailed'
section += ' timing descriptor'
- self.put(self.sn[offset][0], self.sn[offset+17][1],
+
+ self.put(sn[0][0], sn[17][1],
self.out_ann, [ANN_SECTIONS, [section]])
- pixclock = float((self.cache[offset+1] << 8) + self.cache[offset]) / 100
+ pixclock = float((cache[1] << 8) + cache[0]) / 100
self.ann_field(offset, offset+1, 'Pixel clock: %.2f MHz' % pixclock)
- horiz_active = ((self.cache[offset+4] & 0xf0) << 4) + self.cache[offset+2]
- self.ann_field(offset+2, offset+4, 'Horizontal active: %d' % horiz_active)
-
- horiz_blank = ((self.cache[offset+4] & 0x0f) << 8) + self.cache[offset+3]
- self.ann_field(offset+2, offset+4, 'Horizontal blanking: %d' % horiz_blank)
-
- vert_active = ((self.cache[offset+7] & 0xf0) << 4) + self.cache[offset+5]
- self.ann_field(offset+5, offset+7, 'Vertical active: %d' % vert_active)
-
- vert_blank = ((self.cache[offset+7] & 0x0f) << 8) + self.cache[offset+6]
- self.ann_field(offset+5, offset+7, 'Vertical blanking: %d' % vert_blank)
+ horiz_active = ((cache[4] & 0xf0) << 4) + cache[2]
+ horiz_blank = ((cache[4] & 0x0f) << 8) + cache[3]
+ self.ann_field(offset+2, offset+4, 'Horizontal active: %d, blanking: %d' % (horiz_active, horiz_blank))
- horiz_sync_off = ((self.cache[offset+11] & 0xc0) << 2) + self.cache[offset+8]
- self.ann_field(offset+8, offset+11, 'Horizontal sync offset: %d' % horiz_sync_off)
+ vert_active = ((cache[7] & 0xf0) << 4) + cache[5]
+ vert_blank = ((cache[7] & 0x0f) << 8) + cache[6]
+ self.ann_field(offset+5, offset+7, 'Vertical active: %d, blanking: %d' % (vert_active, vert_blank))
- horiz_sync_pw = ((self.cache[offset+11] & 0x30) << 4) + self.cache[offset+9]
- self.ann_field(offset+8, offset+11, 'Horizontal sync pulse width: %d' % horiz_sync_pw)
+ horiz_sync_off = ((cache[11] & 0xc0) << 2) + cache[8]
+ horiz_sync_pw = ((cache[11] & 0x30) << 4) + cache[9]
+ vert_sync_off = ((cache[11] & 0x0c) << 2) + ((cache[10] & 0xf0) >> 4)
+ vert_sync_pw = ((cache[11] & 0x03) << 4) + (cache[10] & 0x0f)
- vert_sync_off = ((self.cache[offset+11] & 0x0c) << 2) \
- + ((self.cache[offset+10] & 0xf0) >> 4)
- self.ann_field(offset+8, offset+11, 'Vertical sync offset: %d' % vert_sync_off)
+ syncs = (horiz_sync_off, horiz_sync_pw, vert_sync_off, vert_sync_pw)
+ self.ann_field(offset+8, offset+11, [
+ 'Horizontal sync offset: %d, pulse width: %d, Vertical sync offset: %d, pulse width: %d' % syncs,
+ 'HSync off: %d, pw: %d, VSync off: %d, pw: %d' % syncs])
- vert_sync_pw = ((self.cache[offset+11] & 0x03) << 4) \
- + (self.cache[offset+10] & 0x0f)
- self.ann_field(offset+8, offset+11, 'Vertical sync pulse width: %d' % vert_sync_pw)
-
- horiz_size = ((self.cache[offset+14] & 0xf0) << 4) + self.cache[offset+12]
- vert_size = ((self.cache[offset+14] & 0x0f) << 8) + self.cache[offset+13]
+ horiz_size = ((cache[14] & 0xf0) << 4) + cache[12]
+ vert_size = ((cache[14] & 0x0f) << 8) + cache[13]
self.ann_field(offset+12, offset+14, 'Physical size: %dx%dmm' % (horiz_size, vert_size))
- horiz_border = self.cache[offset+15]
+ horiz_border = cache[15]
self.ann_field(offset+15, offset+15, 'Horizontal border: %d pixels' % horiz_border)
- vert_border = self.cache[offset+16]
+ vert_border = cache[16]
self.ann_field(offset+16, offset+16, 'Vertical border: %d lines' % vert_border)
features = 'Flags: '
- if self.cache[offset+17] & 0x80:
+ if cache[17] & 0x80:
features += 'interlaced, '
- stereo = (self.cache[offset+17] & 0x60) >> 5
+ stereo = (cache[17] & 0x60) >> 5
if stereo:
- if self.cache[offset+17] & 0x01:
+ if cache[17] & 0x01:
features += '2-way interleaved stereo ('
features += ['right image on even lines',
'left image on even lines',
features += ['right image on sync=1', 'left image on sync=1',
'4-way interleaved'][stereo-1]
features += '), '
- sync = (self.cache[offset+17] & 0x18) >> 3
- sync2 = (self.cache[offset+17] & 0x06) >> 1
+ sync = (cache[17] & 0x18) >> 3
+ sync2 = (cache[17] & 0x06) >> 1
posneg = ['negative', 'positive']
features += 'sync type '
if sync == 0x00:
features += ', '
self.ann_field(offset+17, offset+17, features[:-2])
- def decode_descriptor(self, offset):
- tag = self.cache[offset+3]
+ def decode_descriptor(self, cache, offset):
+ tag = cache[3]
+ self.ann_field(offset, offset+1, "Flag")
+ self.ann_field(offset+2, offset+2, "Flag (reserved)")
+ self.ann_field(offset+3, offset+3, "Tag: {0:X}".format(tag))
+ self.ann_field(offset+4, offset+4, "Flag")
+
+ if self.extension:
+ sn = self.ext_sn[extension - 1]
+ else:
+ sn = self.sn
+
if tag == 0xff:
# Monitor serial number
- self.put(self.sn[offset][0], self.sn[offset+17][1], self.out_ann,
+ self.put(sn[offset][0], sn[offset+17][1], self.out_ann,
[ANN_SECTIONS, ['Serial number']])
- text = bytes(self.cache[offset+5:][:13]).decode(encoding='cp437', errors='replace')
- self.ann_field(offset, offset+17, text.strip())
+ text = bytes(cache[5:][:13]).decode(encoding='cp437', errors='replace')
+ self.ann_field(offset+5, offset+17, text.strip())
elif tag == 0xfe:
# Text
- self.put(self.sn[offset][0], self.sn[offset+17][1], self.out_ann,
+ self.put(sn[offset][0], sn[offset+17][1], self.out_ann,
[ANN_SECTIONS, ['Text']])
- text = bytes(self.cache[offset+5:][:13]).decode(encoding='cp437', errors='replace')
- self.ann_field(offset, offset+17, text.strip())
+ text = bytes(cache[5:][:13]).decode(encoding='cp437', errors='replace')
+ self.ann_field(offset+5, offset+17, text.strip())
elif tag == 0xfc:
# Monitor name
- self.put(self.sn[offset][0], self.sn[offset+17][1], self.out_ann,
+ self.put(sn[offset][0], sn[offset+17][1], self.out_ann,
[ANN_SECTIONS, ['Monitor name']])
- text = bytes(self.cache[offset+5:][:13]).decode(encoding='cp437', errors='replace')
- self.ann_field(offset, offset+17, text.strip())
+ text = bytes(cache[5:][:13]).decode(encoding='cp437', errors='replace')
+ self.ann_field(offset+5, offset+17, text.strip())
elif tag == 0xfd:
# Monitor range limits
- self.put(self.sn[offset][0], self.sn[offset+17][1], self.out_ann,
+ self.put(sn[offset][0], sn[offset+17][1], self.out_ann,
[ANN_SECTIONS, ['Monitor range limits']])
- self.ann_field(offset+5, offset+5, 'Minimum vertical rate: %dHz' %
- self.cache[offset+5])
- self.ann_field(offset+6, offset+6, 'Maximum vertical rate: %dHz' %
- self.cache[offset+6])
- self.ann_field(offset+7, offset+7, 'Minimum horizontal rate: %dkHz' %
- self.cache[offset+7])
- self.ann_field(offset+8, offset+8, 'Maximum horizontal rate: %dkHz' %
- self.cache[offset+8])
- self.ann_field(offset+9, offset+9, 'Maximum pixel clock: %dMHz' %
- (self.cache[offset+9] * 10))
- if self.cache[offset+10] == 0x02:
- # Secondary GTF curve supported
- self.ann_field(offset+10, offset+17, 'Secondary timing formula supported')
+ self.ann_field(offset+5, offset+5, [
+ 'Minimum vertical rate: {0}Hz'.format(cache[5]),
+ 'VSync >= {0}Hz'.format(cache[5])])
+ self.ann_field(offset+6, offset+6, [
+ 'Maximum vertical rate: {0}Hz'.format(cache[6]),
+ 'VSync <= {0}Hz'.format(cache[6])])
+ self.ann_field(offset+7, offset+7, [
+ 'Minimum horizontal rate: {0}kHz'.format(cache[7]),
+ 'HSync >= {0}kHz'.format(cache[7])])
+ self.ann_field(offset+8, offset+8, [
+ 'Maximum horizontal rate: {0}kHz'.format(cache[8]),
+ 'HSync <= {0}kHz'.format(cache[8])])
+ self.ann_field(offset+9, offset+9, [
+ 'Maximum pixel clock: {0}MHz'.format(cache[9] * 10),
+ 'PixClk <= {0}MHz'.format(cache[9] * 10)])
+ if cache[10] == 0x02:
+ self.ann_field(offset+10, offset+10, ['Secondary timing formula supported', '2nd GTF: yes'])
+ self.ann_field(offset+11, offset+17, ['GTF'])
+ else:
+ self.ann_field(offset+10, offset+10, ['Secondary timing formula unsupported', '2nd GTF: no'])
+ self.ann_field(offset+11, offset+17, ['Padding'])
elif tag == 0xfb:
# Additional color point data
- self.put(self.sn[offset][0], self.sn[offset+17][1], self.out_ann,
+ self.put(sn[offset][0], sn[offset+17][1], self.out_ann,
[ANN_SECTIONS, ['Additional color point data']])
elif tag == 0xfa:
# Additional standard timing definitions
- self.put(self.sn[offset][0], self.sn[offset+17][1], self.out_ann,
+ self.put(sn[offset][0], sn[offset+17][1], self.out_ann,
[ANN_SECTIONS, ['Additional standard timing definitions']])
else:
- self.put(self.sn[offset][0], self.sn[offset+17][1], self.out_ann,
+ self.put(sn[offset][0], sn[offset+17][1], self.out_ann,
[ANN_SECTIONS, ['Unknown descriptor']])
def decode_descriptors(self, offset):
# 4 consecutive 18-byte descriptor blocks
+ cache = self.ext_cache[self.extension - 1] if self.extension else self.cache
+ sn = self.ext_sn[self.extension - 1] if self.extension else self.sn
+
for i in range(offset, 0, 18):
- if self.cache[i] != 0 and self.cache[i+1] != 0:
- self.decode_detailed_timing(i)
+ if cache[i] != 0 or cache[i+1] != 0:
+ self.decode_detailed_timing(cache[i:], sn[i:], i, i == offset)
else:
- if self.cache[i+2] == 0 or self.cache[i+4] == 0:
- self.decode_descriptor(i)
+ if cache[i+2] == 0 or cache[i+4] == 0:
+ self.decode_descriptor(cache[i:], i)
+
+ def decode_data_block(self, tag, cache, sn):
+ codes = { 0: ['0: Reserved'],
+ 1: ['1: Audio Data Block', 'Audio'],
+ 2: ['2: Video Data Block', 'Video'],
+ 3: ['3: Vendor Specific Data Block', 'VSDB'],
+ 4: ['4: Speacker Allocation Data Block', 'SADB'],
+ 5: ['5: VESA DTC Data Block', 'DTC'],
+ 6: ['6: Reserved'],
+ 7: ['7: Extended', 'Ext'] }
+ ext_codes = { 0: [ '0: Video Capability Data Block', 'VCDB'],
+ 1: [ '1: Vendor Specific Video Data Block', 'VSVDB'],
+ 17: ['17: Vendor Specific Audio Data Block', 'VSADB'], }
+ if tag < 7:
+ code = codes[tag]
+ ext_len = 0
+ if tag == 1:
+ aformats = { 1: '1 (LPCM)' }
+ rates = [ '192', '176', '96', '88', '48', '44', '32' ]
+
+ aformat = cache[1] >> 3
+ sup_rates = [ i for i in range(0, 8) if (1 << i) & cache[2] ]
+
+ data = "Format: {0} Channels: {1}".format(
+ aformats.get(aformat, aformat), (cache[1] & 0x7) + 1)
+ data += " Rates: " + " ".join(rates[6 - i] for i in sup_rates)
+ data += " Extra: [{0:02X}]".format(cache[3])
+
+ elif tag ==2:
+ data = "VIC: "
+ data += ", ".join("{0}{1}".format(v & 0x7f,
+ ['', ' (Native)'][v >> 7])
+ for v in cache[1:])
+
+ elif tag ==3:
+ ouis = { b'\x00\x0c\x03': 'HDMI Licensing, LLC' }
+ oui = bytes(cache[3:0:-1])
+ ouis = ouis.get(oui, None)
+ data = "OUI: " + " ".join('{0:02X}'.format(x) for x in oui)
+ data += " ({0})".format(ouis) if ouis else ""
+ data += ", PhyAddr: {0}.{1}.{2}.{3}".format(
+ cache[4] >> 4, cache[4] & 0xf, cache[5] >> 4, cache[5] & 0xf)
+ data += ", [" + " ".join('{0:02X}'.format(x) for x in cache[6:]) + "]"
+
+ elif tag ==4:
+ speakers = [ 'FL/FR', 'LFE', 'FC', 'RL/RR',
+ 'RC', 'FLC/FRC', 'RLC/RRC', 'FLW/FRW',
+ 'FLH/FRH', 'TC', 'FCH' ]
+ sup_speakers = cache[1] + (cache[2] << 8)
+ sup_speakers = [ i for i in range(0, 8) if (1 << i) & sup_speakers ]
+ data = "Speakers: " + " ".join(speakers[i] for i in sup_speakers)
+
+ else:
+ data = " ".join('{0:02X}'.format(x) for x in cache[1:])
+
+ else:
+ # Extended tags
+ ext_len = 1
+ ext_code = ext_codes.get(cache[1], ['Unknown', '?'])
+ code = zip(codes[7], [", ", ": "], ext_code)
+ code = [ "".join(x) for x in code ]
+ data = " ".join('{0:02X}'.format(x) for x in cache[2:])
+
+ self.put(sn[0][0], sn[0 + ext_len][1], self.out_ann,
+ [ANN_FIELDS, code])
+ self.put(sn[1 + ext_len][0], sn[len(cache) - 1][1], self.out_ann,
+ [ANN_FIELDS, [data]])
+
+ def decode_data_block_collection(self, cache, sn):
+ offset = 0
+ while offset < len(cache):
+ length = 1 + cache[offset] & 0x1f
+ tag = cache[offset] >> 5
+ self.decode_data_block(tag, cache[offset:offset + length], sn[offset:])
+ offset += length
projects / libsigrokdecode.git / commitdiff