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Diffstat (limited to 'jni_jpegstream/src/jpegstream.cpp')
-rw-r--r--jni_jpegstream/src/jpegstream.cpp377
1 files changed, 0 insertions, 377 deletions
diff --git a/jni_jpegstream/src/jpegstream.cpp b/jni_jpegstream/src/jpegstream.cpp
deleted file mode 100644
index 3b9a6830b..000000000
--- a/jni_jpegstream/src/jpegstream.cpp
+++ /dev/null
@@ -1,377 +0,0 @@
-/*
- * 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 "error_codes.h"
-#include "jni_defines.h"
-#include "jpeg_writer.h"
-#include "jpeg_reader.h"
-#include "jpeg_config.h"
-#include "outputstream_wrapper.h"
-#include "inputstream_wrapper.h"
-
-#include <stdint.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-static jint OutputStream_setup(JNIEnv* env, jobject thiz, jobject out,
- jint width, jint height, jint format, jint quality) {
- // Get a reference to this object's class
- jclass thisClass = env->GetObjectClass(thiz);
- if (env->ExceptionCheck() || thisClass == NULL) {
- return J_EXCEPTION;
- }
- // Get field for storing C pointer
- jfieldID fidNumber = env->GetFieldID(thisClass, "JNIPointer", "J");
- if (NULL == fidNumber || env->ExceptionCheck()) {
- return J_EXCEPTION;
- }
-
- // Check size
- if (width <= 0 || height <= 0) {
- return J_ERROR_BAD_ARGS;
- }
- Jpeg_Config::Format fmt = static_cast<Jpeg_Config::Format>(format);
- // Check format
- switch (fmt) {
- case Jpeg_Config::FORMAT_GRAYSCALE:
- case Jpeg_Config::FORMAT_RGB:
- case Jpeg_Config::FORMAT_RGBA:
- case Jpeg_Config::FORMAT_ABGR:
- break;
- default:
- return J_ERROR_BAD_ARGS;
- }
-
- uint32_t w = static_cast<uint32_t>(width);
- uint32_t h = static_cast<uint32_t>(height);
- int32_t q = static_cast<int32_t>(quality);
- // Clamp quality to (0, 100]
- q = (q > 100) ? 100 : ((q < 1) ? 1 : q);
-
- JpegWriter* w_ptr = new JpegWriter();
-
- // Do JpegWriter setup.
- int32_t errorFlag = w_ptr->setup(env, out, w, h, fmt, q);
- if (env->ExceptionCheck() || errorFlag != J_SUCCESS) {
- delete w_ptr;
- return errorFlag;
- }
-
- // Store C pointer for writer
- env->SetLongField(thiz, fidNumber, reinterpret_cast<jlong>(w_ptr));
- if (env->ExceptionCheck()) {
- delete w_ptr;
- return J_EXCEPTION;
- }
- return J_SUCCESS;
-}
-
-static jint InputStream_setup(JNIEnv* env, jobject thiz, jobject dimens,
- jobject in, jint format) {
- // Get a reference to this object's class
- jclass thisClass = env->GetObjectClass(thiz);
- if (env->ExceptionCheck() || thisClass == NULL) {
- return J_EXCEPTION;
- }
- jmethodID setMethod = NULL;
-
- // Get dimensions object setter method
- if (dimens != NULL) {
- jclass pointClass = env->GetObjectClass(dimens);
- if (env->ExceptionCheck() || pointClass == NULL) {
- return J_EXCEPTION;
- }
- setMethod = env->GetMethodID(pointClass, "set", "(II)V");
- if (env->ExceptionCheck() || setMethod == NULL) {
- return J_EXCEPTION;
- }
- }
- // Get field for storing C pointer
- jfieldID fidNumber = env->GetFieldID(thisClass, "JNIPointer", "J");
- if (NULL == fidNumber || env->ExceptionCheck()) {
- return J_EXCEPTION;
- }
- Jpeg_Config::Format fmt = static_cast<Jpeg_Config::Format>(format);
- // Check format
- switch (fmt) {
- case Jpeg_Config::FORMAT_GRAYSCALE:
- case Jpeg_Config::FORMAT_RGB:
- case Jpeg_Config::FORMAT_RGBA:
- case Jpeg_Config::FORMAT_ABGR:
- break;
- default:
- return J_ERROR_BAD_ARGS;
- }
-
- JpegReader* r_ptr = new JpegReader();
- int32_t w = 0, h = 0;
- // Do JpegReader setup.
- int32_t errorFlag = r_ptr->setup(env, in, &w, &h, fmt);
- if (env->ExceptionCheck() || errorFlag != J_SUCCESS) {
- delete r_ptr;
- return errorFlag;
- }
-
- // Set dimensions to return
- if (dimens != NULL) {
- env->CallVoidMethod(dimens, setMethod, static_cast<jint>(w),
- static_cast<jint>(h));
- if (env->ExceptionCheck()) {
- delete r_ptr;
- return J_EXCEPTION;
- }
- }
- // Store C pointer for reader
- env->SetLongField(thiz, fidNumber, reinterpret_cast<jlong>(r_ptr));
- if (env->ExceptionCheck()) {
- delete r_ptr;
- return J_EXCEPTION;
- }
- return J_SUCCESS;
-}
-
-static JpegWriter* getWPtr(JNIEnv* env, jobject thiz, jfieldID* fid) {
- jclass thisClass = env->GetObjectClass(thiz);
- if (env->ExceptionCheck() || thisClass == NULL) {
- return NULL;
- }
- jfieldID fidNumber = env->GetFieldID(thisClass, "JNIPointer", "J");
- if (NULL == fidNumber || env->ExceptionCheck()) {
- return NULL;
- }
- jlong ptr = env->GetLongField(thiz, fidNumber);
- if (env->ExceptionCheck()) {
- return NULL;
- }
- // Get writer C pointer out of java field.
- JpegWriter* w_ptr = reinterpret_cast<JpegWriter*>(ptr);
- if (fid != NULL) {
- *fid = fidNumber;
- }
- return w_ptr;
-}
-
-static JpegReader* getRPtr(JNIEnv* env, jobject thiz, jfieldID* fid) {
- jclass thisClass = env->GetObjectClass(thiz);
- if (env->ExceptionCheck() || thisClass == NULL) {
- return NULL;
- }
- jfieldID fidNumber = env->GetFieldID(thisClass, "JNIPointer", "J");
- if (NULL == fidNumber || env->ExceptionCheck()) {
- return NULL;
- }
- jlong ptr = env->GetLongField(thiz, fidNumber);
- if (env->ExceptionCheck()) {
- return NULL;
- }
- // Get reader C pointer out of java field.
- JpegReader* r_ptr = reinterpret_cast<JpegReader*>(ptr);
- if (fid != NULL) {
- *fid = fidNumber;
- }
- return r_ptr;
-}
-
-static void OutputStream_cleanup(JNIEnv* env, jobject thiz) {
- jfieldID fidNumber = NULL;
- JpegWriter* w_ptr = getWPtr(env, thiz, &fidNumber);
- if (w_ptr == NULL) {
- return;
- }
- // Update environment
- w_ptr->updateEnv(env);
- // Destroy writer object
- delete w_ptr;
- w_ptr = NULL;
- // Set the java field to null
- env->SetLongField(thiz, fidNumber, reinterpret_cast<jlong>(w_ptr));
-}
-
-static void InputStream_cleanup(JNIEnv* env, jobject thiz) {
- jfieldID fidNumber = NULL;
- JpegReader* r_ptr = getRPtr(env, thiz, &fidNumber);
- if (r_ptr == NULL) {
- return;
- }
- // Update environment
- r_ptr->updateEnv(env);
- // Destroy the reader object
- delete r_ptr;
- r_ptr = NULL;
- // Set the java field to null
- env->SetLongField(thiz, fidNumber, reinterpret_cast<jlong>(r_ptr));
-}
-
-static jint OutputStream_writeInputBytes(JNIEnv* env, jobject thiz,
- jbyteArray inBuffer, jint offset, jint inCount) {
- JpegWriter* w_ptr = getWPtr(env, thiz, NULL);
- if (w_ptr == NULL) {
- return J_EXCEPTION;
- }
- // Pin input buffer
- jbyte* in_buf = (jbyte*) env->GetByteArrayElements(inBuffer, 0);
- if (env->ExceptionCheck() || in_buf == NULL) {
- return J_EXCEPTION;
- }
-
- int8_t* in_bytes = static_cast<int8_t*>(in_buf);
- int32_t in_len = static_cast<int32_t>(inCount);
- int32_t off = static_cast<int32_t>(offset);
- in_bytes += off;
- int32_t written = 0;
-
- // Update environment
- w_ptr->updateEnv(env);
- // Write out and unpin buffer.
- written = w_ptr->write(in_bytes, in_len);
- env->ReleaseByteArrayElements(inBuffer, in_buf, JNI_ABORT);
- return written;
-}
-
-static jint InputStream_readDecodedBytes(JNIEnv* env, jobject thiz,
- jbyteArray inBuffer, jint offset, jint inCount) {
- JpegReader* r_ptr = getRPtr(env, thiz, NULL);
- if (r_ptr == NULL) {
- return J_EXCEPTION;
- }
- // Pin input buffer
- jbyte* in_buf = (jbyte*) env->GetByteArrayElements(inBuffer, 0);
- if (env->ExceptionCheck() || in_buf == NULL) {
- return J_EXCEPTION;
- }
- int8_t* in_bytes = static_cast<int8_t*>(in_buf);
- int32_t in_len = static_cast<int32_t>(inCount);
- int32_t off = static_cast<int32_t>(offset);
- int32_t read = 0;
-
- // Update environment
- r_ptr->updateEnv(env);
- // Read into buffer
- read = r_ptr->read(in_bytes, off, in_len);
-
- // Unpin buffer
- if (read < 0) {
- env->ReleaseByteArrayElements(inBuffer, in_buf, JNI_ABORT);
- } else {
- env->ReleaseByteArrayElements(inBuffer, in_buf, JNI_COMMIT);
- }
- return read;
-}
-
-static jint InputStream_skipDecodedBytes(JNIEnv* env, jobject thiz,
- jint bytes) {
- if (bytes <= 0) {
- return J_ERROR_BAD_ARGS;
- }
- JpegReader* r_ptr = getRPtr(env, thiz, NULL);
- if (r_ptr == NULL) {
- return J_EXCEPTION;
- }
-
- // Update environment
- r_ptr->updateEnv(env);
- int32_t skip = 0;
- // Read with null buffer to skip
- skip = r_ptr->read(NULL, 0, bytes);
- return skip;
-}
-
-static const char *outClassPathName =
- "com/android/gallery3d/jpegstream/JPEGOutputStream";
-static const char *inClassPathName =
- "com/android/gallery3d/jpegstream/JPEGInputStream";
-
-static JNINativeMethod writeMethods[] = { { "setup",
- "(Ljava/io/OutputStream;IIII)I", (void*) OutputStream_setup }, {
- "cleanup", "()V", (void*) OutputStream_cleanup }, { "writeInputBytes",
- "([BII)I", (void*) OutputStream_writeInputBytes } };
-
-static JNINativeMethod readMethods[] = { { "setup",
- "(Landroid/graphics/Point;Ljava/io/InputStream;I)I",
- (void*) InputStream_setup }, { "cleanup", "()V",
- (void*) InputStream_cleanup }, { "readDecodedBytes", "([BII)I",
- (void*) InputStream_readDecodedBytes }, { "skipDecodedBytes", "(I)I",
- (void*) InputStream_skipDecodedBytes } };
-
-static int registerNativeMethods(JNIEnv* env, const char* className,
- JNINativeMethod* gMethods, int numMethods) {
- jclass clazz;
- clazz = env->FindClass(className);
- if (clazz == NULL) {
- LOGE("Native registration unable to find class '%s'", className);
- return JNI_FALSE;
- }
- if (env->RegisterNatives(clazz, gMethods, numMethods) < 0) {
- LOGE("RegisterNatives failed for '%s'", className);
- return JNI_FALSE;
- }
- return JNI_TRUE;
-}
-
-jint JNI_OnLoad(JavaVM* vm, void* reserved) {
- JNIEnv* env;
- if (vm->GetEnv(reinterpret_cast<void**>(&env), JNI_VERSION_1_6) != JNI_OK) {
- LOGE("Error: GetEnv failed in JNI_OnLoad");
- return -1;
- }
- if (!registerNativeMethods(env, outClassPathName, writeMethods,
- sizeof(writeMethods) / sizeof(writeMethods[0]))) {
- LOGE("Error: could not register native methods for JPEGOutputStream");
- return -1;
- }
- if (!registerNativeMethods(env, inClassPathName, readMethods,
- sizeof(readMethods) / sizeof(readMethods[0]))) {
- LOGE("Error: could not register native methods for JPEGInputStream");
- return -1;
- }
- // cache method IDs for OutputStream
- jclass outCls = env->FindClass("java/io/OutputStream");
- if (outCls == NULL) {
- LOGE("Unable to find class 'OutputStream'");
- return -1;
- }
- jmethodID cachedWriteFun = env->GetMethodID(outCls, "write", "([BII)V");
- if (cachedWriteFun == NULL) {
- LOGE("Unable to find write function in class 'OutputStream'");
- return -1;
- }
- OutputStreamWrapper::setWriteMethodID(cachedWriteFun);
-
- // cache method IDs for InputStream
- jclass inCls = env->FindClass("java/io/InputStream");
- if (inCls == NULL) {
- LOGE("Unable to find class 'InputStream'");
- return -1;
- }
- jmethodID cachedReadFun = env->GetMethodID(inCls, "read", "([BII)I");
- if (cachedReadFun == NULL) {
- LOGE("Unable to find read function in class 'InputStream'");
- return -1;
- }
- jmethodID cachedSkipFun = env->GetMethodID(inCls, "skip", "(J)J");
- if (cachedSkipFun == NULL) {
- LOGE("Unable to find skip function in class 'InputStream'");
- return -1;
- }
- InputStreamWrapper::setReadSkipMethodIDs(cachedReadFun, cachedSkipFun);
- return JNI_VERSION_1_6;
-}
-
-#ifdef __cplusplus
-}
-#endif
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