MTP: Include current property value in GetDevicePropDesc

Change-Id: I05125c79ad58b6f75734fcedcc8af9b689fa9ff3
Signed-off-by: Mike Lockwood <lockwood@android.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/media/mtp/MtpStringBuffer.cpp b/media/mtp/MtpStringBuffer.cpp
index 8bf6731..fe8cf04 100644
--- a/media/mtp/MtpStringBuffer.cpp
+++ b/media/mtp/MtpStringBuffer.cpp
@@ -37,6 +37,13 @@ MtpStringBuffer::MtpStringBuffer(const char* src)
     set(src);
 }
 
+MtpStringBuffer::MtpStringBuffer(const uint16_t* src)
+    :   mCharCount(0),
+        mByteCount(1)
+{
+    set(src);
+}
+
 MtpStringBuffer::MtpStringBuffer(const MtpStringBuffer& src)
     :   mCharCount(src.mCharCount),
         mByteCount(src.mByteCount)
@@ -88,6 +95,29 @@ void MtpStringBuffer::set(const char* src) {
     mCharCount = count;
 }
 
+void MtpStringBuffer::set(const uint16_t* src) {
+    int count = 0;
+    uint16_t ch;
+    uint8_t* dest = mBuffer;
+
+    while ((ch = *src++) != 0 && count < 255) {
+        if (ch >= 0x0800) {
+            *dest++ = (uint8_t)(0xE0 | (ch >> 12));
+            *dest++ = (uint8_t)(0x80 | ((ch >> 6) & 0x3F));
+            *dest++ = (uint8_t)(0x80 | (ch & 0x3F));
+        } else if (ch >= 0x80) {
+            *dest++ = (uint8_t)(0xC0 | (ch >> 6));
+            *dest++ = (uint8_t)(0x80 | (ch & 0x3F));
+        } else {
+            *dest++ = ch;
+        }
+        count++;
+    }
+    *dest++ = 0;
+    mCharCount = count;
+    mByteCount = dest - mBuffer;
+}
+
 void MtpStringBuffer::readFromPacket(MtpDataPacket* packet) {
     int count = packet->getUInt8();
     uint8_t* dest = mBuffer;