libmedia: add pre jb-4.2.1 signature for AudioSystem::getDeviceConnectionState

With jb-4.2.1 the type audio_devices_t found in system/core/include/system/audio.h
was redefined from a typedef enum to uint32_t.  This causes the signature
of AudioSystem::getDeviceConnectionState to change in libmedia.so.
Any older than 4.2.1 prebuilt audio.primary.___.so binaries (such as mine from ICS)
may refer to the old signature.  This patch adds back in that reference.

Change-Id: Ie4f92eaec20d581c9bebc805cfd25f8558406e30
Signed-off-by: Hashcode <hashcode0f@gmail.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/media/libmedia/AudioSystem.cpp b/media/libmedia/AudioSystem.cpp
index 94d5089..b7b3b7d 100644
--- a/media/libmedia/AudioSystem.cpp
+++ b/media/libmedia/AudioSystem.cpp
@@ -561,6 +561,12 @@ audio_policy_dev_state_t AudioSystem::getDeviceConnectionState(audio_devices_t d
     return aps->getDeviceConnectionState(device, device_address);
 }
 
+extern "C" audio_policy_dev_state_t _ZN7android11AudioSystem24getDeviceConnectionStateE15audio_devices_tPKc(audio_devices_t device,
+                                                  const char *device_address)
+{
+    return AudioSystem::getDeviceConnectionState(device, device_address);
+}
+
 status_t AudioSystem::setPhoneState(audio_mode_t state)
 {
     if (uint32_t(state) >= AUDIO_MODE_CNT) return BAD_VALUE;