libhardware: add stub audio and audio_policy modules
Change-Id: Ib6c0c49dbc369b735b2ac5fb5b583de96c3e9f3e
Signed-off-by: Dima Zavin <dima@android.com>
diff --git a/modules/audio/audio_policy.c b/modules/audio/audio_policy.c
new file mode 100644
index 0000000..4d5258d
--- /dev/null
+++ b/modules/audio/audio_policy.c
@@ -0,0 +1,318 @@
+/*
+ * 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 LOG_TAG "audio_policy_default"
+//#define LOG_NDEBUG 0
+
+#include <errno.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <hardware/hardware.h>
+#include <hardware/audio.h>
+#include <hardware/audio_policy.h>
+#include <hardware/audio_policy_hal.h>
+
+struct default_ap_module {
+ struct audio_policy_module module;
+};
+
+struct default_ap_device {
+ struct audio_policy_device device;
+};
+
+struct default_audio_policy {
+ struct audio_policy policy;
+
+ struct audio_policy_service_ops *aps_ops;
+ void *service;
+};
+
+static int ap_set_device_connection_state(struct audio_policy *pol,
+ audio_devices_t device,
+ audio_policy_dev_state_t state,
+ const char *device_address)
+{
+ return -ENOSYS;
+}
+
+static audio_policy_dev_state_t ap_get_device_connection_state(
+ const struct audio_policy *pol,
+ audio_devices_t device,
+ const char *device_address)
+{
+ return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE;
+}
+
+static void ap_set_phone_state(struct audio_policy *pol, int state)
+{
+}
+
+static void ap_set_ringer_mode(struct audio_policy *pol, uint32_t mode,
+ uint32_t mask)
+{
+}
+
+static void ap_set_force_use(struct audio_policy *pol,
+ audio_policy_force_use_t usage,
+ audio_policy_forced_cfg_t config)
+{
+}
+
+ /* retreive current device category forced for a given usage */
+static audio_policy_forced_cfg_t ap_get_force_use(
+ const struct audio_policy *pol,
+ audio_policy_force_use_t usage)
+{
+ return AUDIO_POLICY_FORCE_NONE;
+}
+
+/* if can_mute is true, then audio streams that are marked ENFORCED_AUDIBLE
+ * can still be muted. */
+static void ap_set_can_mute_enforced_audible(struct audio_policy *pol,
+ bool can_mute)
+{
+}
+
+static int ap_init_check(const struct audio_policy *pol)
+{
+ return 0;
+}
+
+static audio_io_handle_t ap_get_output(struct audio_policy *pol,
+ audio_stream_type_t stream,
+ uint32_t sampling_rate,
+ uint32_t format,
+ uint32_t channels,
+ audio_policy_output_flags_t flags)
+{
+ return 0;
+}
+
+static int ap_start_output(struct audio_policy *pol, audio_io_handle_t output,
+ audio_stream_type_t stream, int session)
+{
+ return -ENOSYS;
+}
+
+static int ap_stop_output(struct audio_policy *pol, audio_io_handle_t output,
+ audio_stream_type_t stream, int session)
+{
+ return -ENOSYS;
+}
+
+static void ap_release_output(struct audio_policy *pol,
+ audio_io_handle_t output)
+{
+}
+
+static audio_io_handle_t ap_get_input(struct audio_policy *pol, int inputSource,
+ uint32_t sampling_rate,
+ uint32_t format,
+ uint32_t channels,
+ audio_in_acoustics_t acoustics)
+{
+ return 0;
+}
+
+static int ap_start_input(struct audio_policy *pol, audio_io_handle_t input)
+{
+ return -ENOSYS;
+}
+
+static int ap_stop_input(struct audio_policy *pol, audio_io_handle_t input)
+{
+ return -ENOSYS;
+}
+
+static void ap_release_input(struct audio_policy *pol, audio_io_handle_t input)
+{
+}
+
+static void ap_init_stream_volume(struct audio_policy *pol,
+ audio_stream_type_t stream, int index_min,
+ int index_max)
+{
+}
+
+static int ap_set_stream_volume_index(struct audio_policy *pol,
+ audio_stream_type_t stream,
+ int index)
+{
+ return -ENOSYS;
+}
+
+static int ap_get_stream_volume_index(const struct audio_policy *pol,
+ audio_stream_type_t stream,
+ int *index)
+{
+ return -ENOSYS;
+}
+
+static uint32_t ap_get_strategy_for_stream(const struct audio_policy *pol,
+ audio_stream_type_t stream)
+{
+ return 0;
+}
+
+static uint32_t ap_get_devices_for_stream(const struct audio_policy *pol,
+ audio_stream_type_t stream)
+{
+ return 0;
+}
+
+static audio_io_handle_t ap_get_output_for_effect(struct audio_policy *pol,
+ struct effect_descriptor_s *desc)
+{
+ return 0;
+}
+
+static int ap_register_effect(struct audio_policy *pol,
+ struct effect_descriptor_s *desc,
+ audio_io_handle_t output,
+ uint32_t strategy,
+ int session,
+ int id)
+{
+ return -ENOSYS;
+}
+
+static int ap_unregister_effect(struct audio_policy *pol, int id)
+{
+ return -ENOSYS;
+}
+
+static bool ap_is_stream_active(const struct audio_policy *pol, int stream,
+ uint32_t in_past_ms)
+{
+ return false;
+}
+
+static int ap_dump(const struct audio_policy *pol, int fd)
+{
+ return -ENOSYS;
+}
+
+static int create_default_ap(const struct audio_policy_device *device,
+ struct audio_policy_service_ops *aps_ops,
+ void *service,
+ struct audio_policy **ap)
+{
+ struct default_ap_device *dev;
+ struct default_audio_policy *dap;
+ int ret;
+
+ *ap = NULL;
+
+ if (!service || !aps_ops)
+ return -EINVAL;
+
+ dap = (struct default_audio_policy *)calloc(1, sizeof(*dap));
+ if (!dap)
+ return -ENOMEM;
+
+ dap->policy.set_device_connection_state = ap_set_device_connection_state;
+ dap->policy.get_device_connection_state = ap_get_device_connection_state;
+ dap->policy.set_phone_state = ap_set_phone_state;
+ dap->policy.set_ringer_mode = ap_set_ringer_mode;
+ dap->policy.set_force_use = ap_set_force_use;
+ dap->policy.get_force_use = ap_get_force_use;
+ dap->policy.set_can_mute_enforced_audible =
+ ap_set_can_mute_enforced_audible;
+ dap->policy.init_check = ap_init_check;
+ dap->policy.get_output = ap_get_output;
+ dap->policy.start_output = ap_start_output;
+ dap->policy.stop_output = ap_stop_output;
+ dap->policy.release_output = ap_release_output;
+ dap->policy.get_input = ap_get_input;
+ dap->policy.start_input = ap_start_input;
+ dap->policy.stop_input = ap_stop_input;
+ dap->policy.release_input = ap_release_input;
+ dap->policy.init_stream_volume = ap_init_stream_volume;
+ dap->policy.set_stream_volume_index = ap_set_stream_volume_index;
+ dap->policy.get_stream_volume_index = ap_get_stream_volume_index;
+ dap->policy.get_strategy_for_stream = ap_get_strategy_for_stream;
+ dap->policy.get_devices_for_stream = ap_get_devices_for_stream;
+ dap->policy.get_output_for_effect = ap_get_output_for_effect;
+ dap->policy.register_effect = ap_register_effect;
+ dap->policy.unregister_effect = ap_unregister_effect;
+ dap->policy.is_stream_active = ap_is_stream_active;
+ dap->policy.dump = ap_dump;
+
+ dap->service = service;
+ dap->aps_ops = aps_ops;
+
+ *ap = &dap->policy;
+ return 0;
+}
+
+static int destroy_default_ap(const struct audio_policy_device *ap_dev,
+ struct audio_policy *ap)
+{
+ free(ap);
+ return 0;
+}
+
+static int default_ap_dev_close(hw_device_t* device)
+{
+ free(device);
+ return 0;
+}
+
+static int default_ap_dev_open(const hw_module_t* module, const char* name,
+ hw_device_t** device)
+{
+ struct default_ap_device *dev;
+
+ *device = NULL;
+
+ if (strcmp(name, AUDIO_POLICY_INTERFACE) != 0)
+ return -EINVAL;
+
+ dev = (struct default_ap_device *)calloc(1, sizeof(*dev));
+ if (!dev)
+ return -ENOMEM;
+
+ dev->device.common.tag = HARDWARE_DEVICE_TAG;
+ dev->device.common.version = 0;
+ dev->device.common.module = (hw_module_t *)module;
+ dev->device.common.close = default_ap_dev_close;
+ dev->device.create_audio_policy = create_default_ap;
+ dev->device.destroy_audio_policy = destroy_default_ap;
+
+ *device = &dev->device.common;
+
+ return 0;
+}
+
+static struct hw_module_methods_t default_ap_module_methods = {
+ .open = default_ap_dev_open,
+};
+
+struct default_ap_module HAL_MODULE_INFO_SYM = {
+ .module = {
+ .common = {
+ .tag = HARDWARE_MODULE_TAG,
+ .version_major = 1,
+ .version_minor = 0,
+ .id = AUDIO_POLICY_HARDWARE_MODULE_ID,
+ .name = "Default audio policy HAL",
+ .author = "The Android Open Source Project",
+ .methods = &default_ap_module_methods,
+ },
+ },
+};