Merge changes from topic "HWUI_JNI"

* changes:
  Export symbols for the newly exposed APEX/internal headers
  Remove dependence on libandroid_runtime from Bitmap.cpp
  Update Region.cpp to use AParcel NDK APIs
  Cleanup header and build targets for libhwui clients.
  Remove dependencies on headers outside UI module
  Cleanup LOG_TAG when bundled in HWUI
  Move android.graphics JNI & APEX files into HWUI

1 files changed, 136 insertions, 0 deletions

diff --git a/libs/hwui/jni/pdf/PdfUtils.cpp b/libs/hwui/jni/pdf/PdfUtils.cpp
new file mode 100644
index 000000000000..06d202828b85
--- /dev/null
+++ b/libs/hwui/jni/pdf/PdfUtils.cpp
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2016 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 "PdfUtils.h"
+
+#include "jni.h"
+#include <nativehelper/JNIHelp.h>
+
+#include "fpdfview.h"
+
+#undef LOG_TAG
+#define LOG_TAG "PdfUtils"
+#include <utils/Log.h>
+
+namespace android {
+
+static int sUnmatchedPdfiumInitRequestCount = 0;
+
+int getBlock(void* param, unsigned long position, unsigned char* outBuffer,
+        unsigned long size) {
+    const int fd = reinterpret_cast<intptr_t>(param);
+    const int readCount = pread(fd, outBuffer, size, position);
+    if (readCount < 0) {
+        ALOGE("Cannot read from file descriptor. Error:%d", errno);
+        return 0;
+    }
+    return 1;
+}
+
+// Check if the last pdfium command failed and if so, forward the error to java via an exception. If
+// this function returns true an exception is pending.
+bool forwardPdfiumError(JNIEnv* env) {
+    long error = FPDF_GetLastError();
+    switch (error) {
+        case FPDF_ERR_SUCCESS:
+            return false;
+        case FPDF_ERR_FILE:
+            jniThrowException(env, "java/io/IOException", "file not found or cannot be opened");
+            break;
+        case FPDF_ERR_FORMAT:
+            jniThrowException(env, "java/io/IOException", "file not in PDF format or corrupted");
+            break;
+        case FPDF_ERR_PASSWORD:
+            jniThrowException(env, "java/lang/SecurityException",
+                    "password required or incorrect password");
+            break;
+        case FPDF_ERR_SECURITY:
+            jniThrowException(env, "java/lang/SecurityException", "unsupported security scheme");
+            break;
+        case FPDF_ERR_PAGE:
+            jniThrowException(env, "java/io/IOException", "page not found or content error");
+            break;
+#ifdef PDF_ENABLE_XFA
+        case FPDF_ERR_XFALOAD:
+            jniThrowException(env, "java/lang/Exception", "load XFA error");
+            break;
+        case FPDF_ERR_XFALAYOUT:
+            jniThrowException(env, "java/lang/Exception", "layout XFA error");
+            break;
+#endif  // PDF_ENABLE_XFA
+        case FPDF_ERR_UNKNOWN:
+        default:
+            jniThrowExceptionFmt(env, "java/lang/Exception", "unknown error %d", error);
+    }
+
+    return true;
+}
+
+static void initializeLibraryIfNeeded(JNIEnv* env) {
+    if (sUnmatchedPdfiumInitRequestCount == 0) {
+        FPDF_InitLibrary();
+    }
+
+    sUnmatchedPdfiumInitRequestCount++;
+}
+
+static void destroyLibraryIfNeeded(JNIEnv* env, bool handleError) {
+    if (sUnmatchedPdfiumInitRequestCount == 1) {
+        FPDF_DestroyLibrary();
+    }
+
+    sUnmatchedPdfiumInitRequestCount--;
+}
+
+jlong nativeOpen(JNIEnv* env, jclass thiz, jint fd, jlong size) {
+    initializeLibraryIfNeeded(env);
+
+    FPDF_FILEACCESS loader;
+    loader.m_FileLen = size;
+    loader.m_Param = reinterpret_cast<void*>(intptr_t(fd));
+    loader.m_GetBlock = &getBlock;
+
+    FPDF_DOCUMENT document = FPDF_LoadCustomDocument(&loader, NULL);
+    if (!document) {
+        forwardPdfiumError(env);
+        destroyLibraryIfNeeded(env, false);
+        return -1;
+    }
+
+    return reinterpret_cast<jlong>(document);
+}
+
+void nativeClose(JNIEnv* env, jclass thiz, jlong documentPtr) {
+    FPDF_DOCUMENT document = reinterpret_cast<FPDF_DOCUMENT>(documentPtr);
+    FPDF_CloseDocument(document);
+
+    destroyLibraryIfNeeded(env, true);
+}
+
+jint nativeGetPageCount(JNIEnv* env, jclass thiz, jlong documentPtr) {
+    FPDF_DOCUMENT document = reinterpret_cast<FPDF_DOCUMENT>(documentPtr);
+
+    return FPDF_GetPageCount(document);
+}
+
+jboolean nativeScaleForPrinting(JNIEnv* env, jclass thiz, jlong documentPtr) {
+    FPDF_DOCUMENT document = reinterpret_cast<FPDF_DOCUMENT>(documentPtr);
+    FPDF_BOOL printScaling = FPDF_VIEWERREF_GetPrintScaling(document);
+
+    return printScaling ? JNI_TRUE : JNI_FALSE;
+}
+
+};