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-rw-r--r--jni_jpegstream/src/jerr_hook.cpp52
1 files changed, 52 insertions, 0 deletions
diff --git a/jni_jpegstream/src/jerr_hook.cpp b/jni_jpegstream/src/jerr_hook.cpp
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+++ b/jni_jpegstream/src/jerr_hook.cpp
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+/*
+ * Copyright (C) 2013 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 "jerr_hook.h"
+#include "jni_defines.h"
+
+/**
+ * Replaces libjpeg's error_exit function, returns control to
+ * the point
+ */
+void ErrExit(j_common_ptr cinfo) {
+ ErrManager* mgr = reinterpret_cast<ErrManager*>(cinfo->err);
+ (*cinfo->err->output_message) (cinfo);
+ // Returns control to error handling in jpeg_writer
+ longjmp(mgr->setjmp_buf, 1);
+}
+
+/**
+ * Replaces libjpeg's output_message function, writes message
+ * to logcat's error log.
+ */
+void ErrOutput(j_common_ptr cinfo) {
+ ErrManager* mgr = reinterpret_cast<ErrManager*>(cinfo->err);
+ char buf[JMSG_LENGTH_MAX];
+ (*cinfo->err->format_message) (cinfo, buf);
+ buf[JMSG_LENGTH_MAX - 1] = '\0'; // Force null terminator
+ // Output error message in ndk logcat.
+ LOGE("%s\n", buf);
+}
+
+void SetupErrMgr(j_common_ptr cinfo, ErrManager* errMgr) {
+ jpeg_std_error(&(errMgr->mgr));
+ errMgr->mgr.error_exit = ErrExit;
+ errMgr->mgr.output_message = ErrOutput;
+ cinfo->err = reinterpret_cast<struct jpeg_error_mgr*>(errMgr);
+}
+
+