OMX: Added stagefright adaptation layer

Change-Id: I3e5f4e3e53d1d357038435a035d76150d99a3661
Signed-off-by: Sunita Nadampalli <sunitan@ti.com>

3 files changed, 251 insertions, 0 deletions

diff --git a/omx/libstagefrighthw/Android.mk b/omx/libstagefrighthw/Android.mk
new file mode 100644
index 0000000..cde190e
--- /dev/null
+++ b/omx/libstagefrighthw/Android.mk
@@ -0,0 +1,22 @@
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+    TIOMXPlugin.cpp
+
+LOCAL_C_INCLUDES:= \
+        $(TOP)/frameworks/native/include/media/openmax \
+        $(TOP)/frameworks/native/include/media/hardware
+
+LOCAL_SHARED_LIBRARIES :=       \
+        libbinder               \
+        libutils                \
+        libcutils               \
+        liblog                  \
+        libui                   \
+        libdl                   \
+
+LOCAL_MODULE := libstagefrighthw
+
+include $(BUILD_SHARED_LIBRARY)
+
diff --git a/omx/libstagefrighthw/TIOMXPlugin.cpp b/omx/libstagefrighthw/TIOMXPlugin.cpp
new file mode 100644
index 0000000..26a94db
--- /dev/null
+++ b/omx/libstagefrighthw/TIOMXPlugin.cpp
@@ -0,0 +1,153 @@
+/*
+ * Copyright (C) 2009 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 "TIOMXPlugin.h"
+
+#include <dlfcn.h>
+
+#include <HardwareAPI.h>
+
+namespace android {
+
+extern "C" OMXPluginBase *createOMXPlugin() {
+    return new TIOMXPlugin;
+}
+
+extern "C" void destroyOMXPlugin(OMXPluginBase *plugin) {
+    delete plugin;
+}
+
+#define LIBOMX "libOMX_Core.so"
+
+TIOMXPlugin::TIOMXPlugin()
+    : mLibHandle(dlopen(LIBOMX, RTLD_NOW)),
+      mInit(NULL),
+      mDeinit(NULL),
+      mComponentNameEnum(NULL),
+      mGetHandle(NULL),
+      mFreeHandle(NULL),
+      mGetRolesOfComponentHandle(NULL) {
+    if (mLibHandle != NULL) {
+        mInit = (InitFunc)dlsym(mLibHandle, "TIOMX_Init");
+        mDeinit = (DeinitFunc)dlsym(mLibHandle, "TIOMX_Deinit");
+
+        mComponentNameEnum =
+            (ComponentNameEnumFunc)dlsym(mLibHandle, "TIOMX_ComponentNameEnum");
+
+        mGetHandle = (GetHandleFunc)dlsym(mLibHandle, "TIOMX_GetHandle");
+        mFreeHandle = (FreeHandleFunc)dlsym(mLibHandle, "TIOMX_FreeHandle");
+
+        mGetRolesOfComponentHandle =
+            (GetRolesOfComponentFunc)dlsym(
+                    mLibHandle, "TIOMX_GetRolesOfComponent");
+
+        (*mInit)();
+    }
+    else {
+        char const *err_str = dlerror();
+        ALOGE("%s: failed to load %s, with error[%s]", __func__, LIBOMX,  err_str?err_str:"unknown");
+    }
+}
+
+TIOMXPlugin::~TIOMXPlugin() {
+    if (mLibHandle != NULL) {
+        (*mDeinit)();
+
+        dlclose(mLibHandle);
+        mLibHandle = NULL;
+    }
+}
+
+OMX_ERRORTYPE TIOMXPlugin::makeComponentInstance(
+        const char *name,
+        const OMX_CALLBACKTYPE *callbacks,
+        OMX_PTR appData,
+        OMX_COMPONENTTYPE **component) {
+    if (mLibHandle == NULL) {
+        return OMX_ErrorUndefined;
+    }
+
+    return (*mGetHandle)(
+            reinterpret_cast<OMX_HANDLETYPE *>(component),
+            const_cast<char *>(name),
+            appData, const_cast<OMX_CALLBACKTYPE *>(callbacks));
+}
+
+OMX_ERRORTYPE TIOMXPlugin::destroyComponentInstance(
+        OMX_COMPONENTTYPE *component) {
+    if (mLibHandle == NULL) {
+        return OMX_ErrorUndefined;
+    }
+
+    return (*mFreeHandle)(reinterpret_cast<OMX_HANDLETYPE *>(component));
+}
+
+OMX_ERRORTYPE TIOMXPlugin::enumerateComponents(
+        OMX_STRING name,
+        size_t size,
+        OMX_U32 index) {
+    if (mLibHandle == NULL) {
+	ALOGE("mLibHandle is NULL!");
+        return OMX_ErrorUndefined;
+    }
+
+    return (*mComponentNameEnum)(name, size, index);
+}
+
+OMX_ERRORTYPE TIOMXPlugin::getRolesOfComponent(
+        const char *name,
+        Vector<String8> *roles) {
+    roles->clear();
+
+    if (mLibHandle == NULL) {
+        return OMX_ErrorUndefined;
+    }
+
+    OMX_U32 numRoles;
+    OMX_ERRORTYPE err = (*mGetRolesOfComponentHandle)(
+            const_cast<OMX_STRING>(name), &numRoles, NULL);
+
+    if (err != OMX_ErrorNone) {
+        return err;
+    }
+
+    if (numRoles > 0) {
+        OMX_U8 **array = new OMX_U8 *[numRoles];
+        for (OMX_U32 i = 0; i < numRoles; ++i) {
+            array[i] = new OMX_U8[OMX_MAX_STRINGNAME_SIZE];
+        }
+
+        err = (*mGetRolesOfComponentHandle)(
+                const_cast<OMX_STRING>(name), &numRoles, array);
+
+        for (OMX_U32 i = 0; i < numRoles; ++i) {
+            if (err == OMX_ErrorNone) {
+                String8 s((const char *)array[i]);
+                roles->push(s);
+            }
+
+            delete[] array[i];
+            array[i] = NULL;
+        }
+
+        delete[] array;
+        array = NULL;
+    }
+
+    return err;
+}
+
+}  // namespace android
diff --git a/omx/libstagefrighthw/TIOMXPlugin.h b/omx/libstagefrighthw/TIOMXPlugin.h
new file mode 100644
index 0000000..7b2e982
--- /dev/null
+++ b/omx/libstagefrighthw/TIOMXPlugin.h
@@ -0,0 +1,76 @@
+/*
+ * Copyright (C) 2009 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.
+ */
+
+#ifndef TI_OMX_PLUGIN_H_
+
+#define TI_OMX_PLUGIN_H_
+
+#include <OMXPluginBase.h>
+
+namespace android {
+
+struct TIOMXPlugin : public OMXPluginBase {
+    TIOMXPlugin();
+    virtual ~TIOMXPlugin();
+
+    virtual OMX_ERRORTYPE makeComponentInstance(
+            const char *name,
+            const OMX_CALLBACKTYPE *callbacks,
+            OMX_PTR appData,
+            OMX_COMPONENTTYPE **component);
+
+    virtual OMX_ERRORTYPE destroyComponentInstance(
+            OMX_COMPONENTTYPE *component);
+
+    virtual OMX_ERRORTYPE enumerateComponents(
+            OMX_STRING name,
+            size_t size,
+            OMX_U32 index);
+
+    virtual OMX_ERRORTYPE getRolesOfComponent(
+            const char *name,
+            Vector<String8> *roles);
+
+private:
+    void *mLibHandle;
+
+    typedef OMX_ERRORTYPE (*InitFunc)();
+    typedef OMX_ERRORTYPE (*DeinitFunc)();
+    typedef OMX_ERRORTYPE (*ComponentNameEnumFunc)(
+            OMX_STRING, OMX_U32, OMX_U32);
+
+    typedef OMX_ERRORTYPE (*GetHandleFunc)(
+            OMX_HANDLETYPE *, OMX_STRING, OMX_PTR, OMX_CALLBACKTYPE *);
+
+    typedef OMX_ERRORTYPE (*FreeHandleFunc)(OMX_HANDLETYPE *);
+
+    typedef OMX_ERRORTYPE (*GetRolesOfComponentFunc)(
+            OMX_STRING, OMX_U32 *, OMX_U8 **);
+
+    InitFunc mInit;
+    DeinitFunc mDeinit;
+    ComponentNameEnumFunc mComponentNameEnum;
+    GetHandleFunc mGetHandle;
+    FreeHandleFunc mFreeHandle;
+    GetRolesOfComponentFunc mGetRolesOfComponentHandle;
+
+    TIOMXPlugin(const TIOMXPlugin &);
+    TIOMXPlugin &operator=(const TIOMXPlugin &);
+};
+
+}  // namespace android
+
+#endif  // TI_OMX_PLUGIN_H_