MTP does not support partial writes of files (the entire file must be transferred at once).
This makes it impossible to implement a FUSE file system for MTP
with acceptable performance.
To fix this problem, this change adds extended MTP operations to allow
partial writes to files:
SendPartialObject - allows writing a subset of a file, or appending to the end of a file
TruncateObject - allows changing the size of a file
BeginEditObject - must be called before using SendPartialObject and TruncateObject
EndEditObject - commits changes to a file after it has been edited with SendPartialObject or TruncateObject
We also add GetPartialObject64, which is the same as GetPartialObject
but has a 64 bit offset rather than 32.
Change-Id: Id5365e1c4dc55a2d819c16c9db0a3ac2260f9309
Signed-off-by: Mike Lockwood <lockwood@android.com>
- MTP support for multiple storage units
- Add storage_id column to media database for MTP storage ID
- Add framework resource for defining mount points and user visible descriptions
for multiple volumes
- Clean up locking in MtpServer JNI code
Change-Id: Ide6d47bd9aa1698ed2a13d695613e03f2a9b29e3
Signed-off-by: Mike Lockwood <lockwood@android.com>
In this initial implementation we only support fetching one property at a time.
Support depth = 0 (single object) or depth = 1 (all objects in a directory)
Reimplemented GetObjectPropValue on top of GetObjectPropList, since the former
is a special case of the latter.
Change-Id: Ia76ee61741d6ee3902b5c5d9fc094cf86dfaf650
Signed-off-by: Mike Lockwood <lockwood@google.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>
