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Commit 03ed06fb authored by Alice Kuo's avatar Alice Kuo
Browse files

Fix the delta_time_ms types mismtach in btsnooz.py 

The delta_time_ms field in btif_debug_btsnoop.h is 32 bits. The offset
count for 64 bits, and cause the decoder error. Change the offset back
for 32 bits.

Bug: 175283029
Test: ./btsnooz.py bugreport-WXYZ.txt
Change-Id: I28324c4ff33ab817dbad5c813616a8e8c994ff2a
parent 78fc8a80

system/tools/scripts/btsnooz.py

+4 −4
Original line number Diff line number Diff line
@@ -125,16 +125,16 @@ def decode_snooz_v2(decompressed, last_timestamp_ms): 
    first_timestamp_ms = last_timestamp_ms + 0x00dcddb30f2f8000

    offset = 0

    while offset < len(decompressed):

        length, packet_length, delta_time_ms, snooz_type = struct.unpack_from('=HHQb', decompressed, offset)

        offset += 13 + length - 1

        length, packet_length, delta_time_ms, snooz_type = struct.unpack_from('=HHIb', decompressed, offset)

        offset += 9 + length - 1

        first_timestamp_ms -= delta_time_ms



    # Second pass does the actual writing out to stdout.

    offset = 0

    while offset < len(decompressed):

        length, packet_length, delta_time_ms, snooz_type = struct.unpack_from('=HHQb', decompressed, offset)

        length, packet_length, delta_time_ms, snooz_type = struct.unpack_from('=HHIb', decompressed, offset)

        first_timestamp_ms += delta_time_ms

        offset += 13

        offset += 9

        sys.stdout.write(struct.pack('>II', packet_length, length))

        sys.stdout.write(struct.pack('>II', type_to_direction(snooz_type), 0))

        sys.stdout.write(struct.pack('>II', (first_timestamp_ms >> 32), (first_timestamp_ms & 0xFFFFFFFF)))