upload android base code part4

android/hardware/libhardware/modules/tv_input/tv_input.cpp

@@ -0,0 +1,142 @@
+/*
+ * Copyright 2014 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 <errno.h>
+#include <fcntl.h>
+#include <malloc.h>
+
+#include <cutils/native_handle.h>
+#include <log/log.h>
+
+#include <hardware/tv_input.h>
+
+/*****************************************************************************/
+
+typedef struct tv_input_private {
+    tv_input_device_t device;
+
+    // Callback related data
+    const tv_input_callback_ops_t* callback;
+    void* callback_data;
+} tv_input_private_t;
+
+static int tv_input_device_open(const struct hw_module_t* module,
+        const char* name, struct hw_device_t** device);
+
+static struct hw_module_methods_t tv_input_module_methods = {
+    .open = tv_input_device_open
+};
+
+tv_input_module_t HAL_MODULE_INFO_SYM = {
+    .common = {
+        .tag = HARDWARE_MODULE_TAG,
+        .version_major = 0,
+        .version_minor = 1,
+        .id = TV_INPUT_HARDWARE_MODULE_ID,
+        .name = "Sample TV input module",
+        .author = "The Android Open Source Project",
+        .methods = &tv_input_module_methods,
+    }
+};
+
+/*****************************************************************************/
+
+static int tv_input_initialize(struct tv_input_device* dev,
+        const tv_input_callback_ops_t* callback, void* data)
+{
+    if (dev == NULL || callback == NULL) {
+        return -EINVAL;
+    }
+    tv_input_private_t* priv = (tv_input_private_t*)dev;
+    if (priv->callback != NULL) {
+        return -EEXIST;
+    }
+
+    priv->callback = callback;
+    priv->callback_data = data;
+
+    return 0;
+}
+
+static int tv_input_get_stream_configurations(
+        const struct tv_input_device*, int, int*, const tv_stream_config_t**)
+{
+    return -EINVAL;
+}
+
+static int tv_input_open_stream(struct tv_input_device*, int, tv_stream_t*)
+{
+    return -EINVAL;
+}
+
+static int tv_input_close_stream(struct tv_input_device*, int, int)
+{
+    return -EINVAL;
+}
+
+static int tv_input_request_capture(
+        struct tv_input_device*, int, int, buffer_handle_t, uint32_t)
+{
+    return -EINVAL;
+}
+
+static int tv_input_cancel_capture(struct tv_input_device*, int, int, uint32_t)
+{
+    return -EINVAL;
+}
+
+/*****************************************************************************/
+
+static int tv_input_device_close(struct hw_device_t *dev)
+{
+    tv_input_private_t* priv = (tv_input_private_t*)dev;
+    if (priv) {
+        free(priv);
+    }
+    return 0;
+}
+
+/*****************************************************************************/
+
+static int tv_input_device_open(const struct hw_module_t* module,
+        const char* name, struct hw_device_t** device)
+{
+    int status = -EINVAL;
+    if (!strcmp(name, TV_INPUT_DEFAULT_DEVICE)) {
+        tv_input_private_t* dev = (tv_input_private_t*)malloc(sizeof(*dev));
+
+        /* initialize our state here */
+        memset(dev, 0, sizeof(*dev));
+
+        /* initialize the procs */
+        dev->device.common.tag = HARDWARE_DEVICE_TAG;
+        dev->device.common.version = TV_INPUT_DEVICE_API_VERSION_0_1;
+        dev->device.common.module = const_cast<hw_module_t*>(module);
+        dev->device.common.close = tv_input_device_close;
+
+        dev->device.initialize = tv_input_initialize;
+        dev->device.get_stream_configurations =
+                tv_input_get_stream_configurations;
+        dev->device.open_stream = tv_input_open_stream;
+        dev->device.close_stream = tv_input_close_stream;
+        dev->device.request_capture = tv_input_request_capture;
+        dev->device.cancel_capture = tv_input_cancel_capture;
+
+        *device = &dev->device.common;
+        status = 0;
+    }
+    return status;
+}