audio: voice call support

- Also ensured that PRODUCT_PACKAGES is set so that the
HAL is copied into the filesystem.

Change-Id: I89790e5aec1d6beb7d4650316ec070503a35c436

1 files changed, 86 insertions, 0 deletions

diff --git a/audio/ril_interface.c b/audio/ril_interface.c
new file mode 100644
index 0000000..b20d42b
--- /dev/null
+++ b/audio/ril_interface.c
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <dlfcn.h>
+
+#include <utils/Log.h>
+
+#include "ril_interface.h"
+
+int ril_open(void **ril_handle, void **ril_client)
+{
+    void *handle;
+    void *client;
+
+    handle = dlopen(RIL_CLIENT_LIBPATH, RTLD_NOW);
+
+    if (!handle) {
+        LOGE("Cannot open '%s'", RIL_CLIENT_LIBPATH);
+        return -1;
+    }
+
+    ril_open_client = dlsym(handle, "OpenClient_RILD");
+    ril_close_client = dlsym(handle, "CloseClient_RILD");
+    ril_connect = dlsym(handle, "Connect_RILD");
+    ril_is_connected = dlsym(handle, "isConnected_RILD");
+    ril_disconnect = dlsym(handle, "Disconnect_RILD");
+    ril_set_call_volume = dlsym(handle, "SetCallVolume");
+    ril_set_call_audio_path = dlsym(handle, "SetCallAudioPath");
+    ril_set_call_clock_sync = dlsym(handle, "SetCallClockSync");
+
+    if (!ril_open_client || !ril_close_client || !ril_connect ||
+        !ril_is_connected || !ril_disconnect || !ril_set_call_volume ||
+        !ril_set_call_audio_path || !ril_set_call_clock_sync) {
+        LOGE("Cannot get symbols from '%s'", RIL_CLIENT_LIBPATH);
+        dlclose(handle);
+        return -1;
+    }
+
+    client = ril_open_client();
+    if (!client) {
+        LOGE("ril_open_client() failed");
+        dlclose(handle);
+        return -1;
+    }
+
+    if (ril_connect(client) != RIL_CLIENT_ERR_SUCCESS ||
+        !ril_is_connected(client)) {
+        LOGE("ril_connect() failed");
+        ril_close_client(client);
+        dlclose(handle);
+        return -1;
+    }
+
+    *ril_handle = handle;
+    *ril_client = client;
+    return 0;
+}
+
+int ril_close(void *ril_handle, void *ril_client)
+{
+    if (!ril_handle)
+        return -1;
+
+    if ((ril_disconnect(ril_client) != RIL_CLIENT_ERR_SUCCESS) ||
+        (ril_close_client(ril_client) != RIL_CLIENT_ERR_SUCCESS)) {
+        LOGE("ril_disconnect() or ril_close_client() failed");
+        return -1;
+    }
+
+    dlclose(ril_handle);
+    return 0;
+}
+