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MTP host: Fix problems reading large data packets

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Fixes problem reading large thumbnails via PTP

Bug: 4065217

Change-Id: I643672512829c93ab0827091f39103dbb1918071
Signed-off-by: Mike Lockwood <lockwood@android.com>
This commit is contained in:
Mike Lockwood
2011-03-12 14:03:23 -05:00
parent 62cfeeb821
commit bcc0516bc8
1 changed files with 3 additions and 3 deletions
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6
media/mtp/MtpDataPacket.cpp
View File

@@ -28,7 +28,7 @@
namespace android {
MtpDataPacket::MtpDataPacket()
: MtpPacket(512),
: MtpPacket(16384), // MAX_USBFS_BUFFER_SIZE
mOffset(MTP_CONTAINER_HEADER_SIZE)
{
}
@@ -399,10 +399,10 @@ int MtpDataPacket::read(struct usb_request *request) {
if (length >= MTP_CONTAINER_HEADER_SIZE) {
// look at the length field to see if the data spans multiple packets
uint32_t totalLength = MtpPacket::getUInt32(MTP_CONTAINER_LENGTH_OFFSET);
allocate(totalLength);
while (totalLength > length) {
allocate(length + mAllocationIncrement);
request->buffer = mBuffer + length;
request->buffer_length = mAllocationIncrement;
request->buffer_length = totalLength - length;
int ret = transfer(request);
if (ret >= 0)
length += ret;