MTP file transfers happen in two stages. The SendObjectInfo command sends
some information about the file and reserves an ObjectHandle for the new file.
The file transfer is then performed using the SendObject command.
To support this in the media provider, MtpDatabase.beginSendObject receives
the information from SendObjectInfo and creates an row for it in the MTP objects
table for the new file. After the file transfer has completed, then
MtpDatabase.endSendObject is called. In endSendObject, we run the media scanner
on the new file, which will add a row to the images, audio, video
or audio playlist table.
To avoid the media scanner creating a second row for the file in the MTP objects
table, we pass the ObjectHandle created in beginSendObject to the media scanner,
which then passes it to the media provider via the content values when it
performs its insert.
Change-Id: I1ebcc63d6bd4404b0d3a93c703a9d3c097381d3a
Signed-off-by: Mike Lockwood <lockwood@android.com>
Uses a new "MTP objects" table in the media provider to support basic
enumeration of the external storage file system.
Support for accessing audio, video and image metadata in the existing
media provider tables will be added in a later commit.
The C++ MtpDatabase class is now abstract, to support a proxy subclass that
calls through JNI to the Java MtpDatabase class in the media provider.
Change-Id: I90f0db5f3acc5d35ae78c27a8507edff16d14305
Signed-off-by: Mike Lockwood <lockwood@android.com>
All new files and folders are created with group sdcard_rw
Permissions for new files are 0664 and directories 0775
Change-Id: I6d508231150f687e2e529112fd47f10e30fa594f
Signed-off-by: Mike Lockwood <lockwood@android.com>
Rename existing test database to MtpSqliteDatabase
This is the first step in transitioning to using the media provider database
Change-Id: I5f36c854c6e76a79137c267b000a52ced803776c
Signed-off-by: Mike Lockwood <lockwood@android.com>
This restricts the driver to the client's permissions when copying files
to avoid potential security problems.
Change-Id: I9b3151168d334fe4374875804d4ba82bef44db3b
Signed-off-by: Mike Lockwood <lockwood@android.com>
New media scanner test program
Media scanner now cleans up after files that no longer exist
Separate database table for audio files
Extract metadata from audio files with libstagefright
Change-Id: I2bd0fe877836c741658e72fcfeb89c11be0d9b41
Signed-off-by: Mike Lockwood <lockwood@android.com>
This change includes work in progress on a C++ library for both host and device
MTP and PTP support.
Currently the makefile builds two test programs:
mtptest - a command line test program that implements a small subset of device side MTP.
Requires a kernel driver that has not been checked in yet.
ptptest - a host tool to test USB host support for detecting and communicating with
digital cameras over PTP. Runs on Linux host.
Later this will be reformulated as a native library that will be used in the media process.
Change-Id: I81aab279975b600b59d99013ab97f9adf0b58da7
Signed-off-by: Mike Lockwood <lockwood@android.com>
