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| author | Linus Walleij <triad@df.lth.se> | 2013-03-05 10:43:49 +0100 |
|---|---|---|
| committer | Linus Walleij <triad@df.lth.se> | 2013-03-05 10:43:49 +0100 |
| commit | fd9132c493ec3d52da29dcc8085344b09f260d0b (patch) | |
| tree | 4491dc72d4acb351f4ffe1a63b3cc19701be30ea | |
| parent | b7c1a672d64d2c59634a4717d2e3b957372fb5c1 (diff) | |
| download | libmtp-fd9132c493ec3d52da29dcc8085344b09f260d0b.tar.gz | |
Some README update
Signed-off-by: Linus Walleij <triad@df.lth.se>
| -rw-r--r-- | README | 20 |
1 files changed, 18 insertions, 2 deletions
@@ -1010,18 +1010,33 @@ builders summit, might come to recycle this: - Protocol overview - Transactional filesystem - no corruption due to unplugged cables! + - The host and the device can access the files simultaneously, the + device will always "own" the physical file system and proxy the + host (MTP initiator). - libmtp interface - relation to libgphoto2 - User expectations fall short: - Not really a mountable filesystem. - Streaming does not work. (Size needs to be known beforehand due to transactional nature.) + - GVFS MTP backend to the rescue. - Device sins - Android bugs - Samsungs special Android MTP stack - SonyEricsson Aricent stack for Xperia Androids pre 4.0, broken headers! - Flat access model vs hierarchical, how Android uses MTP as an hierachical file system while it was previously a flat database. + - Old paradigm: scan the entire non-hierarchical storage for all content, + build a cache to speed up the (USB 1.1!) link. Usually all files were + stored in the root folder or a single folder named "/Music" or similar. + - Android introduced deeply nested folder hierarchies, not seen before + on MTP devices. + - Microsoft not using the complete metadata dump feature of the MTP + protocol (once introduced by creative) instead they walk directories + separately. + - So caching a big device will take long time and/or timeout. + - Go-MTPFS (FUSE) and GVFS MTP - doing the partial directory walk rather + than caching all files. - Detecting from vendor extension, can fix in newer extensions! - Autoprobing on Linux - Color devices do not like autoprobing @@ -1030,7 +1045,8 @@ builders summit, might come to recycle this: - Multimode USB - one PID for each mode due to Windows limitations not applicable to Linux, SONY devices have ~5 different PIDs for a single device. - - Mode switch devices? -- MTPZ + - Mode switch devices? Maybe we do this wrong. +- MTPZ, came and went. Apparently deprecated by Microsoft with Windows + Phone 8. - Ideas?? |