Hi Andrzej,
On Sat, Nov 14, 2015 at 3:44 PM, Andrzej Kaczmarek
<andrzej.kaczmarek@xxxxxxxxxxx> wrote:
> Hi,
>
> Here's series of patches which adds decoding of AVDTP signalling channel
> and A2DP codec capabilities information. Few things are missing:
> - no fragmentation support
> - some rarely used capabilities are not decoded
> - ATRAC capabilities are not decoded
>
> Other that above, pretty much everything should be decoded.
>
> And some sample output from decoder:
>
> < ACL Data TX: Handle 256 flags 0x00 dlen 6
> Channel: 1602 len 2 [PSM 25 mode 0] {chan 2}
> AVDTP: Discover (0x01) Command: type 0x00 label 6 nosp 0
>> ACL Data RX: Handle 256 flags 0x02 dlen 14
> Channel: 66 len 10 [PSM 25 mode 0] {chan 2}
> AVDTP: Discover (0x01) Response Accept: type 0x00 label 6 nosp 0
> ACP SEID 1
> Media Type: Audio
> SEP Type: SRC
> In use: No
> ACP SEID 5
> Media Type: Audio
> SEP Type: SRC
> In use: No
> ACP SEID 3
> Media Type: Audio
> SEP Type: SRC
> In use: No
> ACP SEID 2
> Media Type: Audio
> SEP Type: SRC
> In use: No
I guess we can add it In use flag only when set.
>
>
> < ACL Data TX: Handle 256 flags 0x00 dlen 7
> Channel: 1602 len 3 [PSM 25 mode 0] {chan 2}
> AVDTP: Get Capabilities (0x02) Command: type 0x00 label 9 nosp 0
> ACP SEID: 3
>> ACL Data RX: Handle 256 flags 0x02 dlen 23
> Channel: 66 len 19 [PSM 25 mode 0] {chan 2}
> AVDTP: Get Capabilities (0x02) Response Accept: type 0x00 label 9 nosp 0
> Service Category: Media Transport
> Service Category: Media Codec
> Media Type: Audio
> Media Codec: Non-A2DP
> Vendor ID: 0x0000004f (APT Licensing Ltd.)
> Vendor Specific Codec ID: 0x0001 (aptX)
> Frequency: 0x30
> 44100
> 48000
> Channel Mode: 0x02
> Stereo
> Service Category: Content Protection
> Content Protection Type: SCMS-T
>
>
> < ACL Data TX: Handle 256 flags 0x00 dlen 18
> Channel: 1602 len 14 [PSM 25 mode 0] {chan 2}
> AVDTP: Set Configuration (0x03) Command: type 0x00 label 11 nosp 0
> ACP SEID: 1
> INT SEID: 1
> Service Category: Media Transport
> Service Category: Media Codec
> Media Type: Audio
> Media Codec: SBC
> Frequency: 0x20
> 44100
> Channel Mode: 0x01
> Joint Channel
> Block Length: 0x10
> 16
> Subbands: 0x04
> 8
> Allocation Method: 0x01
> Loudness
> Minimum Bitpool: 2
> Maximum Bitpool: 53
Id got with a range instead of 2 field e.g. Bitpool: 2-53. Actually
overall Id make this more compact instead of having another line for
the decoded value just input in the same line with the hex value in
parenthesis.
>> ACL Data RX: Handle 256 flags 0x02 dlen 6
> Channel: 66 len 2 [PSM 25 mode 0] {chan 2}
> AVDTP: Set Configuration (0x03) Response Accept: type 0x00 label 11 nosp 0
>
>> ACL Data RX: Handle 256 flags 0x02 dlen 6
> Channel: 66 len 2 [PSM 25 mode 0] {chan 2}
> AVDTP: Open (0x06) Response Accept: type 0x00 label 12 nosp 0
>
>
> < ACL Data TX: Handle 256 flags 0x00 dlen 7
> Channel: 1602 len 3 [PSM 25 mode 0] {chan 2}
> AVDTP: Start (0x07) Command: type 0x00 label 13 nosp 0
> ACP SEID: 1
>> ACL Data RX: Handle 256 flags 0x02 dlen 6
> Channel: 66 len 2 [PSM 25 mode 0] {chan 2}
> AVDTP: Start (0x07) Response Accept: type 0x00 label 13 nosp 0
Would you be able to include the output above into the patch that
introduce it? I think it is a bit better to see the formatting each
patch is introducing and then have proper comments to them.
>
>
> Andrzej Kaczmarek (22):
> monitor/l2cap: Add channel sequence number
> monitor/avdtp: Add basic decoding of AVDTP signalling
> monitor/avdtp: Decode AVDTP_DISCOVER
> monitor/avdtp: Decode AVDTP_GET_CAPABILITIES
> monitor/avdtp: Decode AVDTP_SET_CONFIGURATION
> monitor/avdtp: Decode AVDTP_GET_CONFIGURATION
> monitor/avdtp: Decode AVDTP_RECONFIGURE
> monitor/avdtp: Decode AVDTP_OPEN
> monitor/avdtp: Decode AVDTP_START
> monitor/avdtp: Decode AVDTP_CLOSE
> monitor/avdtp: Decode AVDTP_SUSPEND
> monitor/avdtp: Decode AVDTP_ABORT
> monitor/avdtp: Decode AVDTP_SECURITY_CONTROL
> monitor/avdtp: Decode AVDTP_GET_ALL_CAPABILITIES
> monitor/avdtp: Decode AVDTP_DELAYREPORT
> monitor/avdtp: Decode basic Media Codec capabilities
> monitor/avdtp: Decode basic Content Protection capabilities
> monitor/a2dp: Decode SBC capabilities
> monitor/a2dp: Decode MPEG-1,2 capabilities
> monitor/a2dp: Decode AAC capabilities
> monitor/a2dp: Decode aptX capabilities
> monitor/a2dp: Decode LDAC capabilities
>
> Makefile.tools | 2 +
> android/Android.mk | 2 +
> monitor/a2dp.c | 420 +++++++++++++++++++++++++++
> monitor/a2dp.h | 24 ++
> monitor/avdtp.c | 819 +++++++++++++++++++++++++++++++++++++++++++++++++++++
> monitor/avdtp.h | 24 ++
> monitor/l2cap.c | 48 +++-
> monitor/l2cap.h | 1 +
> 8 files changed, 1327 insertions(+), 13 deletions(-)
> create mode 100644 monitor/a2dp.c
> create mode 100644 monitor/a2dp.h
> create mode 100644 monitor/avdtp.c
> create mode 100644 monitor/avdtp.h
>
> --
> 2.6.2
>
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