28 lines
800 B
C
28 lines
800 B
C
#include <jni.h>
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#include <sys/mman.h>
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#include <android/log.h>
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#include <string.h>
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#include <errno.h>
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#define LOG_TAG "mmap_utils"
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#include "ehviewer.h"
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// TODO: Replace it with AFileDescriptor_getFd when minsdk 31
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// https://developer.android.com/ndk/reference/group/file-descriptor
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JNIEXPORT jint JNICALL
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Java_com_hippo_Native_getFd(JNIEnv *env, jclass clazz, jobject fileDescriptor) {
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jint fd = -1;
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jclass fdClass = (*env)->FindClass(env, "java/io/FileDescriptor");
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if (fdClass != NULL) {
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jfieldID fdClassDescriptorFieldID = (*env)->GetFieldID(env, fdClass, "descriptor", "I");
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if (fdClassDescriptorFieldID != NULL && fileDescriptor != NULL) {
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fd = (*env)->GetIntField(env, fileDescriptor, fdClassDescriptorFieldID);
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}
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}
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return fd;
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}
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