From: Lukas0610 <mail@lukasberger.at>
Date: Mon, 19 Feb 2018 15:45:52 +0000 (+0100)
Subject: universal7580: libshims: add OMX shim
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=54e2de33b0a35c1b5df27662b6e4b6b79ed0e790;p=GitHub%2FLineageOS%2Fandroid_device_samsung_universal7580-common.git

universal7580: libshims: add OMX shim

Change-Id: I103aa42a8384da0cbd8ee2cfa8af2c543479b3fa
---

diff --git a/configs/init/android.hardware.media.omx@1.0-service.rc b/configs/init/android.hardware.media.omx@1.0-service.rc
new file mode 100644
index 0000000..2f2d31c
--- /dev/null
+++ b/configs/init/android.hardware.media.omx@1.0-service.rc
@@ -0,0 +1,7 @@
+service mediacodec /vendor/bin/hw/android.hardware.media.omx@1.0-service
+    class main
+    user mediacodec
+    group camera drmrpc mediadrm
+    ioprio rt 4
+    writepid /dev/cpuset/foreground/tasks
+    setenv LD_PRELOAD "/vendor/lib/libExynosOMX_shim.so"
diff --git a/device-common.mk b/device-common.mk
index 9b45b7d..5492cab 100644
--- a/device-common.mk
+++ b/device-common.mk
@@ -116,6 +116,10 @@ PRODUCT_PACKAGES += \
     android.hardware.wifi@1.0 \
     android.hardware.wifi@1.0-impl
 
+# Overriden service definition
+PRODUCT_COPY_FILES += \
+    $(LOCAL_PATH)/configs/init/android.hardware.media.omx@1.0-service.rc:$(TARGET_COPY_OUT_VENDOR)/etc/init/android.hardware.media.omx@1.0-service.rc
+
 # Properties
 -include $(LOCAL_PATH)/system_prop.mk
 
diff --git a/libshims/libExynosOMX/Android.mk b/libshims/libExynosOMX/Android.mk
new file mode 100644
index 0000000..ad33af9
--- /dev/null
+++ b/libshims/libExynosOMX/Android.mk
@@ -0,0 +1,29 @@
+#
+# Copyright (C) 2018 The LineageOS 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_SRC_FILES := Exynos_OMX_VdecControl.c
+
+LOCAL_SHARED_LIBRARIES := liblog
+
+LOCAL_MODULE := libExynosOMX_shim
+LOCAL_MODULE_TAGS := optional
+LOCAL_MODULE_CLASS := SHARED_LIBRARIES
+LOCAL_PROPRIETARY_MODULE := true
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/libshims/libExynosOMX/Exynos_OMX_VdecControl.c b/libshims/libExynosOMX/Exynos_OMX_VdecControl.c
new file mode 100644
index 0000000..68b1739
--- /dev/null
+++ b/libshims/libExynosOMX/Exynos_OMX_VdecControl.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2017 TeamNexus
+ *
+ * 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 "libExynosOMX_shim"
+
+#include <string.h>
+#include <dlfcn.h>
+#include <utils/Log.h>
+
+int Exynos_OSAL_Strcmp(const char *s1, const char *s2)
+{
+	void *ptr;
+	int ret;
+	Dl_info info;
+
+	/* get address of parent function */
+	ptr = __builtin_return_address(0);
+
+	/* skip index-check if we couldn't get return-address */
+	if (!ptr) {
+		ALOGE("%s: failed to retrieve return address", __func__);
+		goto exit;
+	}
+
+	/* get infos about parent function */
+	ret = dladdr(ptr, &info);
+
+	/* skip index-check if we couldn't get infos about parent function */
+	if (!ret) {
+		ALOGE("%s: failed to retrieve informations about parent function", __func__);
+		goto exit;
+	}
+	
+	/* check if the parent function is Exynos_OMX_VideoDecodeGetExtensionIndex() */
+	if (strcmp(info.dli_sname, "Exynos_OMX_VideoDecodeGetExtensionIndex")) {
+		/* no log here... */
+		goto exit;
+	}
+
+	/* prevent check for storeMetaDataInBuffers-support to succeed */
+	if (!strcmp(s1, "OMX.google.android.index.storeMetaDataInBuffers")) {
+		ALOGI("%s: failing check for storeMetaDataInBuffers-support", __func__);
+		return -1;
+	}
+
+exit:
+	return strcmp(s1, s2);
+}