57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
#include <assert.h>
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#include <jni.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <libdeflate.h>
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#include "jni_util.h"
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JNIEXPORT jlong JNICALL
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Java_com_velocitypowered_natives_compression_NativeZlibInflate_init(JNIEnv *env,
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jclass clazz)
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{
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struct libdeflate_decompressor *decompress = libdeflate_alloc_decompressor();
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if (decompress == NULL) {
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// Out of memory!
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throwException(env, "java/lang/OutOfMemoryError", "libdeflate allocate decompressor");
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return 0;
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}
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return (jlong) decompress;
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}
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JNIEXPORT void JNICALL
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Java_com_velocitypowered_natives_compression_NativeZlibInflate_free(JNIEnv *env,
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jclass clazz,
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jlong ctx)
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{
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libdeflate_free_decompressor((struct libdeflate_decompressor *) ctx);
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}
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JNIEXPORT jboolean JNICALL
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Java_com_velocitypowered_natives_compression_NativeZlibInflate_process(JNIEnv *env,
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jclass clazz,
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jlong ctx,
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jlong sourceAddress,
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jint sourceLength,
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jlong destinationAddress,
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jint destinationLength,
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jlong maximumSize)
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{
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struct libdeflate_decompressor *decompress = (struct libdeflate_decompressor *) ctx;
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enum libdeflate_result result = libdeflate_zlib_decompress(decompress, (void *) sourceAddress,
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sourceLength, (void *) destinationAddress, destinationLength, NULL);
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switch (result) {
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case LIBDEFLATE_SUCCESS:
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// We are happy
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return JNI_TRUE;
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case LIBDEFLATE_BAD_DATA:
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throwException(env, "java/util/zip/DataFormatException", "inflate data is bad");
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return JNI_FALSE;
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case LIBDEFLATE_SHORT_OUTPUT:
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case LIBDEFLATE_INSUFFICIENT_SPACE:
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// These cases are the same for us. We expect the full uncompressed size to be known.
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throwException(env, "java/util/zip/DataFormatException", "uncompressed size is inaccurate");
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return JNI_FALSE;
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}
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} |