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-rw-r--r--modules/audio/audio_amplifier.c146
1 files changed, 146 insertions, 0 deletions
diff --git a/modules/audio/audio_amplifier.c b/modules/audio/audio_amplifier.c
new file mode 100644
index 0000000..9b92356
--- /dev/null
+++ b/modules/audio/audio_amplifier.c
@@ -0,0 +1,146 @@
+/*
+ * Copyright (C) 2015 The CyanogenMod 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 "amplifier_default"
+//#define LOG_NDEBUG 0
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <sys/types.h>
+
+#include <cutils/log.h>
+#include <cutils/str_parms.h>
+
+#include <hardware/audio_amplifier.h>
+#include <hardware/hardware.h>
+
+static int amp_set_input_devices(amplifier_device_t *device, uint32_t devices)
+{
+ return 0;
+}
+
+static int amp_set_output_devices(amplifier_device_t *device, uint32_t devices)
+{
+ return 0;
+}
+
+static int amp_enable_output_devices(amplifier_device_t *device,
+ uint32_t devices, bool enable)
+{
+ return 0;
+}
+
+static int amp_enable_input_devices(amplifier_device_t *device,
+ uint32_t devices, bool enable)
+{
+ return 0;
+}
+
+static int amp_set_mode(amplifier_device_t *device, audio_mode_t mode)
+{
+ return 0;
+}
+
+static int amp_output_stream_start(amplifier_device_t *device,
+ struct audio_stream_out *stream, bool offload)
+{
+ return 0;
+}
+
+static int amp_input_stream_start(amplifier_device_t *device,
+ struct audio_stream_in *stream)
+{
+ return 0;
+}
+
+static int amp_output_stream_standby(amplifier_device_t *device,
+ struct audio_stream_out *stream)
+{
+ return 0;
+}
+
+static int amp_input_stream_standby(amplifier_device_t *device,
+ struct audio_stream_in *stream)
+{
+ return 0;
+}
+
+static int amp_set_parameters(struct amplifier_device *device,
+ struct str_parms *parms)
+{
+ return 0;
+}
+
+static int amp_dev_close(hw_device_t *device)
+{
+ if (device)
+ free(device);
+
+ return 0;
+}
+
+static int amp_module_open(const hw_module_t *module, const char *name,
+ hw_device_t **device)
+{
+ if (strcmp(name, AMPLIFIER_HARDWARE_INTERFACE)) {
+ ALOGE("%s:%d: %s does not match amplifier hardware interface name\n",
+ __func__, __LINE__, name);
+ return -ENODEV;
+ }
+
+ amplifier_device_t *amp_dev = calloc(1, sizeof(amplifier_device_t));
+ if (!amp_dev) {
+ ALOGE("%s:%d: Unable to allocate memory for amplifier device\n",
+ __func__, __LINE__);
+ return -ENOMEM;
+ }
+
+ amp_dev->common.tag = HARDWARE_DEVICE_TAG;
+ amp_dev->common.module = (hw_module_t *) module;
+ amp_dev->common.version = HARDWARE_DEVICE_API_VERSION(1, 0);
+ amp_dev->common.close = amp_dev_close;
+
+ amp_dev->set_input_devices = amp_set_input_devices;
+ amp_dev->set_output_devices = amp_set_output_devices;
+ amp_dev->enable_output_devices = amp_enable_output_devices;
+ amp_dev->enable_input_devices = amp_enable_input_devices;
+ amp_dev->set_mode = amp_set_mode;
+ amp_dev->output_stream_start = amp_output_stream_start;
+ amp_dev->input_stream_start = amp_input_stream_start;
+ amp_dev->output_stream_standby = amp_output_stream_standby;
+ amp_dev->input_stream_standby = amp_input_stream_standby;
+ amp_dev->set_parameters = amp_set_parameters;
+
+ *device = (hw_device_t *) amp_dev;
+
+ return 0;
+}
+
+static struct hw_module_methods_t hal_module_methods = {
+ .open = amp_module_open,
+};
+
+amplifier_module_t HAL_MODULE_INFO_SYM = {
+ .common = {
+ .tag = HARDWARE_MODULE_TAG,
+ .module_api_version = AMPLIFIER_MODULE_API_VERSION_0_1,
+ .hal_api_version = HARDWARE_HAL_API_VERSION,
+ .id = AMPLIFIER_HARDWARE_MODULE_ID,
+ .name = "Default audio amplifier HAL",
+ .author = "The CyanogenMod Open Source Project",
+ .methods = &hal_module_methods,
+ },
+};