Initial commit of TV input HAL

HAL for physical TV input such as HDMI-in. The main purpose is to
provide sideband video stream source handle to feed SurfaceFlinger and
audio related information to feed AudioManager (TBD).

Change-Id: I8eeddcd6c63f6f8c0b1e7a87e9a6856baa9ceddd

3 files changed, 153 insertions, 1 deletions

diff --git a/modules/Android.mk b/modules/Android.mk
index f1a6c1c..5f1de32 100644
--- a/modules/Android.mk
+++ b/modules/Android.mk
@@ -1,4 +1,4 @@
 hardware_modules := gralloc hwcomposer audio nfc nfc-nci local_time \
 	power usbaudio audio_remote_submix camera consumerir sensors vibrator \
-	mcu
+	mcu tv_input
 include $(call all-named-subdir-makefiles,$(hardware_modules))
diff --git a/modules/tv_input/Android.mk b/modules/tv_input/Android.mk
new file mode 100644
index 0000000..e8aa7fc
--- /dev/null
+++ b/modules/tv_input/Android.mk
@@ -0,0 +1,24 @@
+# Copyright (C) 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.
+
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_SHARED_LIBRARIES := libcutils liblog
+LOCAL_SRC_FILES := tv_input.cpp
+LOCAL_MODULE := tv_input.default
+LOCAL_MODULE_TAGS := optional
+include $(BUILD_SHARED_LIBRARY)
diff --git a/modules/tv_input/tv_input.cpp b/modules/tv_input/tv_input.cpp
new file mode 100644
index 0000000..bdb47ca
--- /dev/null
+++ b/modules/tv_input/tv_input.cpp
@@ -0,0 +1,128 @@
+/*
+ * 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 <fcntl.h>
+#include <errno.h>
+
+#include <cutils/log.h>
+#include <cutils/native_handle.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_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;
+
+        *device = &dev->device.common;
+        status = 0;
+    }
+    return status;
+}