blob: f8f864f78013c3e7c90dbf967150a92f3f525d1e [file] [log] [blame]
/*
* 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);
}