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-rwxr-xr-xaudio/ril_interface.c183
1 files changed, 183 insertions, 0 deletions
diff --git a/audio/ril_interface.c b/audio/ril_interface.c
new file mode 100755
index 0000000..89a0aef
--- /dev/null
+++ b/audio/ril_interface.c
@@ -0,0 +1,183 @@
+/*
+ * 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.
+ */
+
+#define ALOG_TAG "audio_hw_primary"
+/*#define ALOG_NDEBUG 0*/
+
+#include <dlfcn.h>
+#include <stdlib.h>
+
+#include <utils/Log.h>
+#include <cutils/properties.h>
+
+#include "ril_interface.h"
+
+#define VOLUME_STEPS_DEFAULT "5"
+#define VOLUME_STEPS_PROPERTY "ro.config.vc_call_vol_steps"
+
+/* Function pointers */
+void *(*_ril_open_client)(void);
+int (*_ril_close_client)(void *);
+int (*_ril_connect)(void *);
+int (*_ril_is_connected)(void *);
+int (*_ril_disconnect)(void *);
+int (*_ril_set_call_volume)(void *, enum ril_sound_type, int);
+int (*_ril_set_call_audio_path)(void *, enum ril_audio_path);
+int (*_ril_set_call_clock_sync)(void *, enum ril_clock_state);
+int (*_ril_register_unsolicited_handler)(void *, int, void *);
+int (*_ril_get_wb_amr)(void *, void *);
+
+/* Audio WB AMR callback */
+void (*_audio_set_wb_amr_callback)(void *, int);
+void *callback_data = NULL;
+
+void ril_register_set_wb_amr_callback(void *function, void *data)
+{
+ _audio_set_wb_amr_callback = function;
+ callback_data = data;
+}
+
+/* This is the callback function that the RIL uses to
+set the wideband AMR state */
+static int ril_set_wb_amr_callback(void *ril_client,
+ const void *data,
+ size_t datalen)
+{
+ int enable = ((int *)data)[0];
+
+ if (!callback_data || !_audio_set_wb_amr_callback)
+ return -1;
+
+ _audio_set_wb_amr_callback(callback_data, enable);
+
+ return 0;
+}
+
+static int ril_connect_if_required(struct ril_handle *ril)
+{
+ if (_ril_is_connected(ril->client))
+ return 0;
+
+ if (_ril_connect(ril->client) != RIL_CLIENT_ERR_SUCCESS) {
+ ALOGE("ril_connect() failed");
+ return -1;
+ }
+
+ /* get wb amr status to set pcm samplerate depending on
+ wb amr status when ril is connected. */
+ if(_ril_get_wb_amr)
+ _ril_get_wb_amr(ril->client, ril_set_wb_amr_callback);
+
+ return 0;
+}
+
+int ril_open(struct ril_handle *ril)
+{
+ char property[PROPERTY_VALUE_MAX];
+
+ if (!ril)
+ return -1;
+
+ ril->handle = dlopen(RIL_CLIENT_LIBPATH, RTLD_NOW);
+
+ if (!ril->handle) {
+ ALOGE("Cannot open '%s'", RIL_CLIENT_LIBPATH);
+ return -1;
+ }
+
+ _ril_open_client = dlsym(ril->handle, "OpenClient_RILD");
+ _ril_close_client = dlsym(ril->handle, "CloseClient_RILD");
+ _ril_connect = dlsym(ril->handle, "Connect_RILD");
+ _ril_is_connected = dlsym(ril->handle, "isConnected_RILD");
+ _ril_disconnect = dlsym(ril->handle, "Disconnect_RILD");
+ _ril_set_call_volume = dlsym(ril->handle, "SetCallVolume");
+ _ril_set_call_audio_path = dlsym(ril->handle, "SetCallAudioPath");
+ _ril_set_call_clock_sync = dlsym(ril->handle, "SetCallClockSync");
+ _ril_register_unsolicited_handler = dlsym(ril->handle,
+ "RegisterUnsolicitedHandler");
+ /* since this function is not supported in all RILs, don't require it */
+ _ril_get_wb_amr = dlsym(ril->handle, "GetWB_AMR");
+
+ 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 ||
+ !_ril_register_unsolicited_handler) {
+ ALOGE("Cannot get symbols from '%s'", RIL_CLIENT_LIBPATH);
+ dlclose(ril->handle);
+ return -1;
+ }
+
+ ril->client = _ril_open_client();
+ if (!ril->client) {
+ ALOGE("ril_open_client() failed");
+ dlclose(ril->handle);
+ return -1;
+ }
+
+ /* register the wideband AMR callback */
+ _ril_register_unsolicited_handler(ril->client, RIL_UNSOL_WB_AMR_STATE,
+ ril_set_wb_amr_callback);
+
+ property_get(VOLUME_STEPS_PROPERTY, property, VOLUME_STEPS_DEFAULT);
+ ril->volume_steps_max = atoi(property);
+ /* this catches the case where VOLUME_STEPS_PROPERTY does not contain
+ an integer */
+ if (ril->volume_steps_max == 0)
+ ril->volume_steps_max = atoi(VOLUME_STEPS_DEFAULT);
+
+ return 0;
+}
+
+int ril_close(struct ril_handle *ril)
+{
+ if (!ril || !ril->handle || !ril->client)
+ return -1;
+
+ if ((_ril_disconnect(ril->client) != RIL_CLIENT_ERR_SUCCESS) ||
+ (_ril_close_client(ril->client) != RIL_CLIENT_ERR_SUCCESS)) {
+ ALOGE("ril_disconnect() or ril_close_client() failed");
+ return -1;
+ }
+
+ dlclose(ril->handle);
+ return 0;
+}
+
+int ril_set_call_volume(struct ril_handle *ril, enum ril_sound_type sound_type,
+ float volume)
+{
+ if (ril_connect_if_required(ril))
+ return 0;
+
+ return _ril_set_call_volume(ril->client, sound_type,
+ (int)(volume * ril->volume_steps_max));
+}
+
+int ril_set_call_audio_path(struct ril_handle *ril, enum ril_audio_path path)
+{
+ if (ril_connect_if_required(ril))
+ return 0;
+
+ return _ril_set_call_audio_path(ril->client, path);
+}
+
+int ril_set_call_clock_sync(struct ril_handle *ril, enum ril_clock_state state)
+{
+ if (ril_connect_if_required(ril))
+ return 0;
+
+ return _ril_set_call_clock_sync(ril->client, state);
+}