WebOS Internals - User contributions [en]

Portal:Research

2009-08-10T19:52:39Z

Muchtall:

__notoc__
{{portal-header|
The Research Portal is for bleeding edge things being done with the device.

Title all pages: '''Research [description]''' or '''Reference [description]'''
}}
{{portal-two-columns
|column1=
===Research:===

* [[Applications Bundled on the Pre]]
* [[Application_Framework|Application Framework]]
* [[Blocking Updates]]
* [[BlueZ|BlueZ (Replacing Palm Bluetooth)]]
* [[Boot_Chain|Boot Chain]]
* [[Bootie]]
* [[ClassicFilesystem]]
* [[Decrypt SSL (trusted man-in-the-middle technique)|Decrypt SSL (trusted man-in-the-middle technique)]]
* [[Hidd]]
* [[Introspecting_Dbus|Introspecting Dbus]]
* [[Key Codes|Key Codes]]
* [[Pre Specific Hash Codes|Pre Specific Hash Codes]]
* [[Pictures from Self-Test|Pictures from Self-Test]]
* [[Restore Debug Log|Restore Debug Log]]
* [[Reverse_Engineering_WebOS_Doctor|Reverse Engineering WebOS Doctor]]
* [[Reverse_Engineering_WebOS_Quick_Install|Reverse Engineering WebOS Quick Install]]
* [[Rooted Pre Issues|Rooted Pre Issues]]
* [[Running Processes|Running Processes]]
* [[Symlink Applications|Symlink Applications]]
* [[System Sounds|System Sounds]]
* [[TestApps|TestApps]]
* [[Update Service Trace|Update Service Trace]]
* [[Tidbits|Tidbits]]
* [[VideoRecording]]
* [[WebOS Exploration - Various Information|WebOS Exploration - Various Information]]

|column2=
===Reference===
* [[webkit_transform|Webkit Transform]]- a powerful set of commands for manipulating elements.
}}

ClassicFilesystem

2009-08-10T19:47:02Z

Muchtall:

Classic appears to store PRCs/PDBs in:
<source lang="text">/var/lib/palmos/datamgr/PALM_DM</source>
You should be able to copy files from this location to /media/internal or elsewhere to maintain a backup should you decide to either do a Hard Reset of Classic, or a Hard Reset of the Pre. When either backing up or restoring in this directory, you must close Classic first. Failure to do so could yield unexpected results. 
 
A directory listing of of a clean (just after reset) /var/lib/palmos/datamgr/PALM_DM:
<source lang="text">root@castle:/var/lib/palmos/datamgr/PALM_DM# ls -al
drwxr-xr-x 2 root root 4096 Aug 10 13:52 .
drwxr-xr-x 3 root root 4096 Aug 10 13:52 ..
-rwxr-xr-x 1 root root 2048 Aug 10 13:52 AddressDB_81800000
-rwxr-xr-x 1 root root 3072 Aug 10 13:52 CalendarDB%2DPDat_80D80000
-rwxr-xr-x 1 root root 2560 Aug 10 13:52 Camcorder%5FLoader%2DCoLo_80205000
-rwxr-xr-x 1 root root 2560 Aug 10 13:52 Camera%5FLoader%2DCmLo_81028000
-rwxr-xr-x 1 root root 148992 Aug 10 13:52 CarrierProfiles2_81000000
-rwxr-xr-x 1 root root 17920 Aug 10 13:52 ContactsANIndex%2DPAdd_80E0C000
-rwxr-xr-x 1 root root 17920 Aug 10 13:52 ContactsBDIndex%2DPAdd_80E0C000
-rwxr-xr-x 1 root root 4096 Aug 10 13:52 ContactsDB%2DPAdd_80D80000
-rwxr-xr-x 1 root root 2048 Aug 10 13:52 DatebookDB_80C00000
-rwxr-xr-x 1 root root 3072 Aug 10 13:52 Graffiti%20ShortCuts_80420000
-rwxr-xr-x 1 root root 2048 Aug 10 13:52 HSTraceDatabaseHead_E1010000
-rwxr-xr-x 1 root root 2560 Aug 10 13:52 HSTraceDatabase_E1000000
-rwxr-xr-x 1 root root 3072 Aug 10 13:52 HsSysResource68K_A4010000
-rwxr-xr-x 1 root root 2048 Aug 10 13:52 MemoDB_8C000000
-rwxr-xr-x 1 root root 3072 Aug 10 13:52 MemosDB%2DPMem_86C00000
-rwxr-xr-x 1 root root 3072 Aug 10 13:52 NVInfo%2Dpsys_E0000000
-rwxr-xr-x 1 root root 2560 Aug 10 13:52 NetworkDB_81800000
-rwxr-xr-x 1 root root 260096 Aug 10 13:52 NetworkProfiles2_81000000
-rwxr-xr-x 1 root root 2048 Aug 10 13:52 PIMsSupportStatus%2DpdmE_E8100400
-rwxr-xr-x 1 root root 3584 Aug 10 13:52 Queries_80000000
-rwxr-xr-x 1 root root 262144 Aug 10 13:52 ReserveFile
-rwxr-xr-x 1 root root 3584 Aug 10 13:52 Saved%20Preferences_82000000
-rwxr-xr-x 1 root root 2048 Aug 10 13:52 System%20DB%20Chain%20Head_81A08000
-rwxr-xr-x 1 root root 3072 Aug 10 13:52 TasksDB%2DPTod_86C00000
-rwxr-xr-x 1 root root 2048 Aug 10 13:52 ToDoDB_AC000000
-rwxr-xr-x 1 root root 3072 Aug 10 13:52 Txn%20Log%2050416464_88000000
-rwxr-xr-x 1 root root 3584 Aug 10 13:52 Unsaved%20Preferences_80800000
-rwxr-xr-x 1 root root 2560 Aug 10 13:52 dfltCapRes%2DpoCL_09060000
-rwxr-xr-x 1 root root 88064 Aug 10 13:52 psysLaunchDB_08300000
</source>
== ToDo ==
- It would probably be useful to know what the suffixes on the end of the files mean. Perhaps flags and file extensions for the emulated filesystem?

ClassicFilesystem

2009-08-10T19:19:23Z

Muchtall: New page: Classic appears to store PRCs/PDBs in: <source lang="text">/var/lib/palmos/datamgr/PALM_DM</source> You should be able to copy files from this location to /media/internal or elsewhere to m...

Classic appears to store PRCs/PDBs in:
<source lang="text">/var/lib/palmos/datamgr/PALM_DM</source>
You should be able to copy files from this location to /media/internal or elsewhere to maintain a backup should you decide to either do a Hard Reset of Classic, or a Hard Reset of the Pre. Though not confirmed, you should be able to copy these files back (while Classic is NOT running) to restore them. 
 
A directory listing of of a clean (just after reset) /var/lib/palmos/datamgr/PALM_DM:
<source lang="text">root@castle:/var/lib/palmos/datamgr/PALM_DM# ls -al
drwxr-xr-x 2 root root 4096 Aug 10 13:52 .
drwxr-xr-x 3 root root 4096 Aug 10 13:52 ..
-rwxr-xr-x 1 root root 2048 Aug 10 13:52 AddressDB_81800000
-rwxr-xr-x 1 root root 3072 Aug 10 13:52 CalendarDB%2DPDat_80D80000
-rwxr-xr-x 1 root root 2560 Aug 10 13:52 Camcorder%5FLoader%2DCoLo_80205000
-rwxr-xr-x 1 root root 2560 Aug 10 13:52 Camera%5FLoader%2DCmLo_81028000
-rwxr-xr-x 1 root root 148992 Aug 10 13:52 CarrierProfiles2_81000000
-rwxr-xr-x 1 root root 17920 Aug 10 13:52 ContactsANIndex%2DPAdd_80E0C000
-rwxr-xr-x 1 root root 17920 Aug 10 13:52 ContactsBDIndex%2DPAdd_80E0C000
-rwxr-xr-x 1 root root 4096 Aug 10 13:52 ContactsDB%2DPAdd_80D80000
-rwxr-xr-x 1 root root 2048 Aug 10 13:52 DatebookDB_80C00000
-rwxr-xr-x 1 root root 3072 Aug 10 13:52 Graffiti%20ShortCuts_80420000
-rwxr-xr-x 1 root root 2048 Aug 10 13:52 HSTraceDatabaseHead_E1010000
-rwxr-xr-x 1 root root 2560 Aug 10 13:52 HSTraceDatabase_E1000000
-rwxr-xr-x 1 root root 3072 Aug 10 13:52 HsSysResource68K_A4010000
-rwxr-xr-x 1 root root 2048 Aug 10 13:52 MemoDB_8C000000
-rwxr-xr-x 1 root root 3072 Aug 10 13:52 MemosDB%2DPMem_86C00000
-rwxr-xr-x 1 root root 3072 Aug 10 13:52 NVInfo%2Dpsys_E0000000
-rwxr-xr-x 1 root root 2560 Aug 10 13:52 NetworkDB_81800000
-rwxr-xr-x 1 root root 260096 Aug 10 13:52 NetworkProfiles2_81000000
-rwxr-xr-x 1 root root 2048 Aug 10 13:52 PIMsSupportStatus%2DpdmE_E8100400
-rwxr-xr-x 1 root root 3584 Aug 10 13:52 Queries_80000000
-rwxr-xr-x 1 root root 262144 Aug 10 13:52 ReserveFile
-rwxr-xr-x 1 root root 3584 Aug 10 13:52 Saved%20Preferences_82000000
-rwxr-xr-x 1 root root 2048 Aug 10 13:52 System%20DB%20Chain%20Head_81A08000
-rwxr-xr-x 1 root root 3072 Aug 10 13:52 TasksDB%2DPTod_86C00000
-rwxr-xr-x 1 root root 2048 Aug 10 13:52 ToDoDB_AC000000
-rwxr-xr-x 1 root root 3072 Aug 10 13:52 Txn%20Log%2050416464_88000000
-rwxr-xr-x 1 root root 3584 Aug 10 13:52 Unsaved%20Preferences_80800000
-rwxr-xr-x 1 root root 2560 Aug 10 13:52 dfltCapRes%2DpoCL_09060000
-rwxr-xr-x 1 root root 88064 Aug 10 13:52 psysLaunchDB_08300000
</source>

VideoRecording

2009-08-07T18:15:36Z

Muchtall:

At your command line (after [[Portal:Accessing_Linux|accessing linux]]):

(make sure FS is rw) 
<source lang="bash">
mount -o remount,rw /
gst-launch camsrc ! palmvideoencoder ! filesink location=/media/internal/downloads/foo.mts
mount -o remount,ro /
</source>
- No GUI 
- No sound (need a muxer plugin? verify alsasrc works) 
- Frame rate seemed pretty decent too. 
- Video is H.264 at 480x320. 
- Image is rotated 90 degrees CCW

other useful gstreamer commands:

gst-inspect (shows list of sources to pipe through, mostly decoders/demuxers)
<source lang="text">
root@castle:/var/home/ccrook# gst-inspect
palmvideodecoder: palmvideodecoder: palmvideodecoder
palmaudiodecoder: palmaudiodecoder: palmaudiodecoder
wavparse: wavparse: WAV audio demuxer
wavenc: wavenc: WAV audio muxer
udp: udpsink: UDP packet sender
udp: multiudpsink: UDP packet sender
udp: dynudpsink: UDP packet sender
udp: udpsrc: UDP packet receiver
typefindfunctions: application/x-id3v2: mp3, mp2, mp1, mpga, ogg, flac, tta
typefindfunctions: application/x-id3v1: mp3, mp2, mp1, mpga, ogg, flac, tta
typefindfunctions: audio/mpeg: mp3, mp2, mp1, mpga
typefindfunctions: video/mpeg4: m4v
typefindfunctions: audio/x-m4a: m4a
typefindfunctions: application/x-3gp: 3gp
typefindfunctions: video/quicktime: mov
typefindfunctions: audio/x-wav: wav
typefindfunctions: adts_mpeg_stream: aac
typefindfunctions: audio/x-amr-nb-sh: amr
typefindfunctions: audio/x-amr-wb-sh: amr
rtsp: rtspsrc: RTSP packet receiver
rtsp: rtpdec: RTP Decoder
rtsp: rtspgoogle: Google RTSP Extension
gstrtpmanager: gstrtpbin: RTP Bin
gstrtpmanager: gstrtpclient: RTP Client
gstrtpmanager: gstrtpjitterbuffer: RTP packet jitter-buffer
gstrtpmanager: gstrtpptdemux: RTP Demux
gstrtpmanager: gstrtpsession: RTP Session
gstrtpmanager: gstrtpssrcdemux: RTP SSRC Demux
rtp: rtpdepay: RTP depayloader
rtp: rtpac3depay: RTP packet depayloader
rtp: rtpdvdepay: RTP DV Depayloader
rtp: rtpdvpay: RTP DV Payloader
rtp: rtpilbcpay: RTP Payloader for iLBC Audio
rtp: rtpilbcdepay: RTP iLBC packet depayloader
rtp: rtpg726depay: RTP packet depayloader
rtp: rtpg726pay: RTP packet payloader
rtp: rtpg729depay: RTP packet depayloader
rtp: rtpg729pay: RTP Payloader for G729 Audio
rtp: rtpgsmdepay: RTP packet depayloader
rtp: rtpgsmpay: RTP GSM audio payloader
rtp: rtpamrdepay: RTP packet depayloader
rtp: rtpamrpay: RTP packet payloader
rtp: rtppcmadepay: RTP packet depayloader
rtp: rtppcmudepay: RTP packet depayloader
rtp: rtppcmupay: RTP packet payloader
rtp: rtppcmapay: RTP packet payloader
rtp: rtpmpadepay: RTP packet depayloader
rtp: rtpmpapay: RTP packet payloader
rtp: rtpmpvdepay: RTP packet depayloader
rtp: rtpmpvpay: RTP MPEG2 ES video payloader
rtp: rtph263ppay: RTP packet payloader
rtp: rtph263pdepay: RTP packet depayloader
rtp: rtph263depay: RTP H263 packet depayloader
rtp: rtph263pay: RTP packet payloader
rtp: rtph264depay: RTP packet depayloader
rtp: rtph264pay: RTP packet payloader
rtp: rtpL16pay: RTP packet payloader
rtp: rtpL16depay: RTP packet depayloader
rtp: asteriskh263: RTP packet parser
rtp: rtpmp1sdepay: RTP packet depayloader
rtp: rtpmp2tdepay: RTP packet depayloader
rtp: rtpmp2tpay: RTP MP2T audio payloader
rtp: rtpmp4vpay: RTP MPEG-4 Video packet payloader
rtp: rtpmp4vdepay: RTP packet depayloader
rtp: rtpmp4apay: RTP packet payloader
rtp: rtpmp4adepay: RTP packet parser
rtp: rtpmp4gdepay: RTP packet depayloader
rtp: rtpmp4gpay: RTP packet payloader
rtp: rtpspeexpay: RTP packet payloader
rtp: rtpspeexdepay: RTP packet depayloader
rtp: rtpsv3vdepay: RTP packet depayloader
rtp: rtptheoradepay: RTP packet depayloader
rtp: rtptheorapay: RTP packet depayloader
rtp: rtpvorbisdepay: RTP packet depayloader
rtp: rtpvorbispay: RTP packet depayloader
rtp: rtpvrawdepay: RTP packet depayloader
rtp: rtpvrawpay: RTP packet payloader
queue2: queue2: Queue
quicktime: qtdemux: QuickTime demuxer
quicktime: rtpxqtdepay: RTP packet depayloader
playback: playbin: Player Bin
playback: playbin2: Player Bin 2
mulaw: mulawenc: Mu Law audio encoder
mulaw: mulawdec: Mu Law audio decoder
mobirtspsrc: mobirtspsrc: MobiRtspSrc
ffmpeg: ffdec_alac: FFMPEG ALAC (Apple Lossless Audio Codec) decoder
ffmpeg: ffdec_qcelp: FFMPEG QCELP / PureVoice decoder
ffmpeg: ffdeinterlace: FFMPEG Deinterlace element
ffmpeg: ffaudioresample: FFMPEG Audio resampling element
uridecodebin: decodebin2: Decoder Bin
uridecodebin: uridecodebin: URI Decoder
decodebin: decodebin: Decoder Bin
coreindexers: memindex: A index that stores entries in memory
coreelements: capsfilter: CapsFilter
coreelements: fakesrc: Fake Source
coreelements: fakesink: Fake Sink
coreelements: fdsrc: Filedescriptor Source
coreelements: fdsink: Filedescriptor Sink
coreelements: filesrc: File Source
coreelements: identity: Identity
coreelements: queue: Queue
coreelements: filesink: File Sink
coreelements: tee: Tee pipe fitting
coreelements: typefind: TypeFind
coreelements: multiqueue: MultiQueue
video4linux2: camsrc: Video (video4linux2/raw) Source
avi: avidemux: Avi demuxer
avi: avimux: Avi muxer
avi: avisubtitle: Avi subtitle parser
audiotestsrc: audiotestsrc: Audio test source
audiorate: audiorate: Audio rate adjuster
audioconvert: audioconvert: Audio converter
alsa: alsamixer: Alsa mixer
alsa: alsasrc: Audio source (ALSA)
alsa: alsasink: Audio sink (ALSA)
alaw: alawenc: A Law audio encoder
alaw: alawdec: A Law audio decoder
palmvideosink: palmvideosink: palmvideosink
palmvideoencoder: palmvideoencoder: palmvideoencoder
palmqcelpdemux: palmqcelpdemux: palmqcelpdemux
palmqcelpdemux: audio/x-gst-fourcc-sqcp: no extensions
palmmp3demux: palmmp3demux: palmmp3demux
palmjpegencfilesink: palmjpegencfilesink: palmjpegencfilesink
palmhttpsrc: palmhttpsrc: Palm HTTP Source Element
palmamrdemux: palmamrdemux: palmamrdemux
adpcmdecoder: palmadpcmdecoder: ADPCM Decoder
palmaacdemux: palmaacdemux: palmaacdemux
staticelements: bin: Generic bin
staticelements: pipeline: Pipeline object

Total count: 36 plugins, 129 features
</source>

Additional reference from XO Laptop site:

http://wiki.laptop.org/go/Programming_the_camera 
http://wiki.laptop.org/go/GStreamer#Using_gst_at_the_command_line 

Currently looking at ways to use the camera preview pipe as a method of video recording through the WebOS GUI by diverting it to the filesystem.

File of interest: /usr/lib/luna/luna-media/palmInitMedia.js

More on the camera module: http://www.st.com/stonline/products/literature/bd/14404/vx6852.htm

== SVN repository ==
Public SVN up at: http://devel.ccrook.com/webos/camcorder 
username: default 
password: default 

Relies on Prelease for launching shell scripts. Use Flashlight App! to install it before attempting to run.
 
Currently stop button doesn't work.

== ToDo ==
1.) Figure out proper way to freevideosink via a homebrew app (killing gst-launch properly) 
2.) Mux in sound from alsasrc 
:"gst-launch alsasrc ! alsasink" will give you sound from the mic playing back through the speakers, verifying alsasrc. It quickly loses resolution though, and starts giving "can't keep up with audio source" errors. --[[User:Zinge|Zinge]] 08:23, 7 August 2009 (UTC)

:"gst-launch alsasrc ! wavenc ! filesink location=/media/internal/downloads/test.wav" will record audio no problem. --[[User:Cpcrook|Cpcrook]] 17:36, 7 August 2009 (UTC)
:"gst-launch camsrc ! palmvideoencoder ! avimux name=mux ! filesink location=/media/internal/downloads/foo.mts alsasrc ! mulawenc ! mux." will mux audio and video, though the timing was a bit off when I played it back. --[[User:Muchtall|Muchtall]] 18:15, 7 August 2009 (UTC)

3.) Implement preview screen (possibility: send video through palmvideosink, then to palmvideoencoder so its still accessible for preview?) 
4.) Get Videos app to display recorded video files 
5.) Video conferencing via UDPsink?

VideoRecording

2009-08-06T17:21:09Z

Muchtall:

At your rooted command line:

(make sure FS is rw) 
<source lang="text">
mount -o remount,rw /
gst-launch camsrc ! palmvideoencoder ! filesink location=/media/internal/downloads/foo.mts
mount -o remount,ro /
</source>
- No GUI 
- No sound (need a muxer plugin? verify alsasrc works) 
Frame rate seemed pretty decent too. 
Video is H.264 at 480x320. 

other useful gstreamer commands:

gst-inspect (shows list of sources to pipe through, mostly decoders/demuxers)
<source lang="text">
root@castle:/var/home/ccrook# gst-inspect
palmvideodecoder: palmvideodecoder: palmvideodecoder
palmaudiodecoder: palmaudiodecoder: palmaudiodecoder
wavparse: wavparse: WAV audio demuxer
wavenc: wavenc: WAV audio muxer
udp: udpsink: UDP packet sender
udp: multiudpsink: UDP packet sender
udp: dynudpsink: UDP packet sender
udp: udpsrc: UDP packet receiver
typefindfunctions: application/x-id3v2: mp3, mp2, mp1, mpga, ogg, flac, tta
typefindfunctions: application/x-id3v1: mp3, mp2, mp1, mpga, ogg, flac, tta
typefindfunctions: audio/mpeg: mp3, mp2, mp1, mpga
typefindfunctions: video/mpeg4: m4v
typefindfunctions: audio/x-m4a: m4a
typefindfunctions: application/x-3gp: 3gp
typefindfunctions: video/quicktime: mov
typefindfunctions: audio/x-wav: wav
typefindfunctions: adts_mpeg_stream: aac
typefindfunctions: audio/x-amr-nb-sh: amr
typefindfunctions: audio/x-amr-wb-sh: amr
rtsp: rtspsrc: RTSP packet receiver
rtsp: rtpdec: RTP Decoder
rtsp: rtspgoogle: Google RTSP Extension
gstrtpmanager: gstrtpbin: RTP Bin
gstrtpmanager: gstrtpclient: RTP Client
gstrtpmanager: gstrtpjitterbuffer: RTP packet jitter-buffer
gstrtpmanager: gstrtpptdemux: RTP Demux
gstrtpmanager: gstrtpsession: RTP Session
gstrtpmanager: gstrtpssrcdemux: RTP SSRC Demux
rtp: rtpdepay: RTP depayloader
rtp: rtpac3depay: RTP packet depayloader
rtp: rtpdvdepay: RTP DV Depayloader
rtp: rtpdvpay: RTP DV Payloader
rtp: rtpilbcpay: RTP Payloader for iLBC Audio
rtp: rtpilbcdepay: RTP iLBC packet depayloader
rtp: rtpg726depay: RTP packet depayloader
rtp: rtpg726pay: RTP packet payloader
rtp: rtpg729depay: RTP packet depayloader
rtp: rtpg729pay: RTP Payloader for G729 Audio
rtp: rtpgsmdepay: RTP packet depayloader
rtp: rtpgsmpay: RTP GSM audio payloader
rtp: rtpamrdepay: RTP packet depayloader
rtp: rtpamrpay: RTP packet payloader
rtp: rtppcmadepay: RTP packet depayloader
rtp: rtppcmudepay: RTP packet depayloader
rtp: rtppcmupay: RTP packet payloader
rtp: rtppcmapay: RTP packet payloader
rtp: rtpmpadepay: RTP packet depayloader
rtp: rtpmpapay: RTP packet payloader
rtp: rtpmpvdepay: RTP packet depayloader
rtp: rtpmpvpay: RTP MPEG2 ES video payloader
rtp: rtph263ppay: RTP packet payloader
rtp: rtph263pdepay: RTP packet depayloader
rtp: rtph263depay: RTP H263 packet depayloader
rtp: rtph263pay: RTP packet payloader
rtp: rtph264depay: RTP packet depayloader
rtp: rtph264pay: RTP packet payloader
rtp: rtpL16pay: RTP packet payloader
rtp: rtpL16depay: RTP packet depayloader
rtp: asteriskh263: RTP packet parser
rtp: rtpmp1sdepay: RTP packet depayloader
rtp: rtpmp2tdepay: RTP packet depayloader
rtp: rtpmp2tpay: RTP MP2T audio payloader
rtp: rtpmp4vpay: RTP MPEG-4 Video packet payloader
rtp: rtpmp4vdepay: RTP packet depayloader
rtp: rtpmp4apay: RTP packet payloader
rtp: rtpmp4adepay: RTP packet parser
rtp: rtpmp4gdepay: RTP packet depayloader
rtp: rtpmp4gpay: RTP packet payloader
rtp: rtpspeexpay: RTP packet payloader
rtp: rtpspeexdepay: RTP packet depayloader
rtp: rtpsv3vdepay: RTP packet depayloader
rtp: rtptheoradepay: RTP packet depayloader
rtp: rtptheorapay: RTP packet depayloader
rtp: rtpvorbisdepay: RTP packet depayloader
rtp: rtpvorbispay: RTP packet depayloader
rtp: rtpvrawdepay: RTP packet depayloader
rtp: rtpvrawpay: RTP packet payloader
queue2: queue2: Queue
quicktime: qtdemux: QuickTime demuxer
quicktime: rtpxqtdepay: RTP packet depayloader
playback: playbin: Player Bin
playback: playbin2: Player Bin 2
mulaw: mulawenc: Mu Law audio encoder
mulaw: mulawdec: Mu Law audio decoder
mobirtspsrc: mobirtspsrc: MobiRtspSrc
ffmpeg: ffdec_alac: FFMPEG ALAC (Apple Lossless Audio Codec) decoder
ffmpeg: ffdec_qcelp: FFMPEG QCELP / PureVoice decoder
ffmpeg: ffdeinterlace: FFMPEG Deinterlace element
ffmpeg: ffaudioresample: FFMPEG Audio resampling element
uridecodebin: decodebin2: Decoder Bin
uridecodebin: uridecodebin: URI Decoder
decodebin: decodebin: Decoder Bin
coreindexers: memindex: A index that stores entries in memory
coreelements: capsfilter: CapsFilter
coreelements: fakesrc: Fake Source
coreelements: fakesink: Fake Sink
coreelements: fdsrc: Filedescriptor Source
coreelements: fdsink: Filedescriptor Sink
coreelements: filesrc: File Source
coreelements: identity: Identity
coreelements: queue: Queue
coreelements: filesink: File Sink
coreelements: tee: Tee pipe fitting
coreelements: typefind: TypeFind
coreelements: multiqueue: MultiQueue
video4linux2: camsrc: Video (video4linux2/raw) Source
avi: avidemux: Avi demuxer
avi: avimux: Avi muxer
avi: avisubtitle: Avi subtitle parser
audiotestsrc: audiotestsrc: Audio test source
audiorate: audiorate: Audio rate adjuster
audioconvert: audioconvert: Audio converter
alsa: alsamixer: Alsa mixer
alsa: alsasrc: Audio source (ALSA)
alsa: alsasink: Audio sink (ALSA)
alaw: alawenc: A Law audio encoder
alaw: alawdec: A Law audio decoder
palmvideosink: palmvideosink: palmvideosink
palmvideoencoder: palmvideoencoder: palmvideoencoder
palmqcelpdemux: palmqcelpdemux: palmqcelpdemux
palmqcelpdemux: audio/x-gst-fourcc-sqcp: no extensions
palmmp3demux: palmmp3demux: palmmp3demux
palmjpegencfilesink: palmjpegencfilesink: palmjpegencfilesink
palmhttpsrc: palmhttpsrc: Palm HTTP Source Element
palmamrdemux: palmamrdemux: palmamrdemux
adpcmdecoder: palmadpcmdecoder: ADPCM Decoder
palmaacdemux: palmaacdemux: palmaacdemux
staticelements: bin: Generic bin
staticelements: pipeline: Pipeline object

Total count: 36 plugins, 129 features
</source>

Additional reference from XO Laptop site:

http://wiki.laptop.org/go/Programming_the_camera 
http://wiki.laptop.org/go/GStreamer#Using_gst_at_the_command_line 

Currently looking at ways to use the camera preview pipe as a method of video recording through the WebOS GUI by diverting it to the filesystem.

File of interest: /usr/lib/luna/luna-media/palmInitMedia.js

More on the camera module: http://www.st.com/stonline/products/literature/bd/14404/vx6852.htm

VideoRecording

2009-08-06T15:51:23Z

Muchtall:

At your rooted command line:

(make sure FS is rw) 
mount -o remount,rw / 
gst-launch camsrc ! palmvideoencoder ! filesink location=/media/internal/downloads/foo.mts 
mount -o remount,ro / 

- No GUI 
- No sound (need a muxer plugin? verify alsasrc works) 
Frame rate seemed pretty decent too. 
Video is H.264 at 480x320. 

other useful gstreamer commands:

gst-inspect (shows list of sources to pipe through, mostly decoders/demuxers)

Additional reference from XO Laptop site:

http://wiki.laptop.org/go/Programming_the_camera 
http://wiki.laptop.org/go/GStreamer#Using_gst_at_the_command_line 

Currently looking at ways to use the camera preview pipe as a method of video recording through the WebOS GUI by diverting it to the filesystem.

File of interest: /usr/lib/luna/luna-media/palmInitMedia.js

More on the camera module: http://www.st.com/stonline/products/literature/bd/14404/vx6852.htm

VideoRecording

2009-08-06T15:50:54Z

Muchtall:

At your rooted command line:

#(make sure FS is rw) 
mount -o remount,rw / 
gst-launch camsrc ! palmvideoencoder ! filesink location=/media/internal/downloads/foo.mts 
mount -o remount,ro / 

- No GUI 
- No sound (need a muxer plugin? verify alsasrc works) 
Frame rate seemed pretty decent too. 
Video is H.264 at 480x320. 

other useful gstreamer commands:

gst-inspect (shows list of sources to pipe through, mostly decoders/demuxers)

Additional reference from XO Laptop site:

http://wiki.laptop.org/go/Programming_the_camera 
http://wiki.laptop.org/go/GStreamer#Using_gst_at_the_command_line 

Currently looking at ways to use the camera preview pipe as a method of video recording through the WebOS GUI by diverting it to the filesystem.

File of interest: /usr/lib/luna/luna-media/palmInitMedia.js

More on the camera module: http://www.st.com/stonline/products/literature/bd/14404/vx6852.htm

VideoRecording

2009-08-06T15:34:25Z

Muchtall:

At your rooted command line:

(make sure FS is rw)
mount -o remount,rw /
gst-launch camsrc ! palmvideoencoder ! filesink location=/media/internal/downloads/foo.mts
mount -o remount,ro /

- No GUI
- No sound (need a muxer plugin? verify alsasrc works)
Frame rate seemed pretty decent too.
Video is H.264 at 480x320.

other useful gstreamer commands:

gst-inspect (shows list of sources to pipe through, mostly decoders/demuxers)

Additional reference from XO Laptop site:

http://wiki.laptop.org/go/Programming_the_camera
http://wiki.laptop.org/go/GStreamer#Using_gst_at_the_command_line

Currently looking at ways to use the camera preview pipe as a method of video recording through the WebOS GUI by diverting it to the filesystem.

File of interest: /usr/lib/luna/luna-media/palmInitMedia.js

More on the camera module: http://www.st.com/stonline/products/literature/bd/14404/vx6852.htm