JNIEXPORT jint JNICALL Java_org_apache_hadoop_io_compress_snappy_SnappyCompressor_compressBytesDirect
(JNIEnv *env, jobject thisj){
// Get members of SnappyCompressor
jobject clazz = (*env)->GetStaticObjectField(env, thisj, SnappyCompressor_clazz);
jobject uncompressed_direct_buf = (*env)->GetObjectField(env, thisj, SnappyCompressor_uncompressedDirectBuf);
jint uncompressed_direct_buf_len = (*env)->GetIntField(env, thisj, SnappyCompressor_uncompressedDirectBufLen);
jobject compressed_direct_buf = (*env)->GetObjectField(env, thisj, SnappyCompressor_compressedDirectBuf);
jint compressed_direct_buf_len = (*env)->GetIntField(env, thisj, SnappyCompressor_directBufferSize);
size_t buf_len;
// Get the input direct buffer
LOCK_CLASS(env, clazz, "SnappyCompressor");
const char* uncompressed_bytes = (const char*)(*env)->GetDirectBufferAddress(env, uncompressed_direct_buf);
UNLOCK_CLASS(env, clazz, "SnappyCompressor");
if (uncompressed_bytes == 0) {
return (jint)0;
}
// Get the output direct buffer
LOCK_CLASS(env, clazz, "SnappyCompressor");
char* compressed_bytes = (char *)(*env)->GetDirectBufferAddress(env, compressed_direct_buf);
UNLOCK_CLASS(env, clazz, "SnappyCompressor");
if (compressed_bytes == 0) {
return (jint)0;
}
/* size_t should always be 4 bytes or larger. */
buf_len = (size_t)compressed_direct_buf_len;
snappy_status ret = dlsym_snappy_compress(uncompressed_bytes,
uncompressed_direct_buf_len, compressed_bytes, &buf_len);
if (ret != SNAPPY_OK){
THROW(env, "Ljava/lang/InternalError", "Could not compress data. Buffer length is too small.");
return 0;
}
if (buf_len > JINT_MAX) {
THROW(env, "Ljava/lang/InternalError", "Invalid return buffer length.");
return 0;
}
(*env)->SetIntField(env, thisj, SnappyCompressor_uncompressedDirectBufLen, 0);
return (jint)buf_len;
}
JNIEXPORT jint JNICALL Java_com_indeed_util_compress_snappy_SnappyDecompressor_decompressBytesDirect
(JNIEnv *env, jobject thisj){
// Get members of SnappyDecompressor
jobject clazz = (*env)->GetStaticObjectField(env,thisj, SnappyDecompressor_clazz);
jobject compressed_direct_buf = (*env)->GetObjectField(env,thisj, SnappyDecompressor_compressedDirectBuf);
jint compressed_direct_buf_len = (*env)->GetIntField(env,thisj, SnappyDecompressor_compressedDirectBufLen);
jobject uncompressed_direct_buf = (*env)->GetObjectField(env,thisj, SnappyDecompressor_uncompressedDirectBuf);
size_t uncompressed_direct_buf_len = (*env)->GetIntField(env, thisj, SnappyDecompressor_directBufferSize);
// Get the input direct buffer
LOCK_CLASS(env, clazz, "SnappyDecompressor");
const char* compressed_bytes = (const char*)(*env)->GetDirectBufferAddress(env, compressed_direct_buf);
UNLOCK_CLASS(env, clazz, "SnappyDecompressor");
if (compressed_bytes == 0) {
return (jint)0;
}
// Get the output direct buffer
LOCK_CLASS(env, clazz, "SnappyDecompressor");
char* uncompressed_bytes = (char *)(*env)->GetDirectBufferAddress(env, uncompressed_direct_buf);
UNLOCK_CLASS(env, clazz, "SnappyDecompressor");
if (uncompressed_bytes == 0) {
return (jint)0;
}
snappy_status ret = dlsym_snappy_uncompress(compressed_bytes, compressed_direct_buf_len, uncompressed_bytes, &uncompressed_direct_buf_len);
if (ret == SNAPPY_BUFFER_TOO_SMALL){
THROW(env, "java/lang/InternalError", "Could not decompress data. Buffer length is too small.");
} else if (ret == SNAPPY_INVALID_INPUT){
THROW(env, "java/lang/InternalError", "Could not decompress data. Input is invalid.");
} else if (ret != SNAPPY_OK){
THROW(env, "java/lang/InternalError", "Could not decompress data.");
}
(*env)->SetIntField(env, thisj, SnappyDecompressor_compressedDirectBufLen, 0);
return (jint)uncompressed_direct_buf_len;
}
JNIEXPORT jint JNICALL Java_org_apache_hadoop_io_compress_lz4_Lz4Decompressor_decompressBytesDirect
(JNIEnv *env, jobject thisj){
const char *compressed_bytes;
char *uncompressed_bytes;
// Get members of Lz4Decompressor
jobject clazz = (*env)->GetStaticObjectField(env,thisj, Lz4Decompressor_clazz);
jobject compressed_direct_buf = (*env)->GetObjectField(env,thisj, Lz4Decompressor_compressedDirectBuf);
jint compressed_direct_buf_len = (*env)->GetIntField(env,thisj, Lz4Decompressor_compressedDirectBufLen);
jobject uncompressed_direct_buf = (*env)->GetObjectField(env,thisj, Lz4Decompressor_uncompressedDirectBuf);
size_t uncompressed_direct_buf_len = (*env)->GetIntField(env, thisj, Lz4Decompressor_directBufferSize);
// Get the input direct buffer
LOCK_CLASS(env, clazz, "Lz4Decompressor");
compressed_bytes = (const char*)(*env)->GetDirectBufferAddress(env, compressed_direct_buf);
UNLOCK_CLASS(env, clazz, "Lz4Decompressor");
if (compressed_bytes == 0) {
return (jint)0;
}
// Get the output direct buffer
LOCK_CLASS(env, clazz, "Lz4Decompressor");
uncompressed_bytes = (char *)(*env)->GetDirectBufferAddress(env, uncompressed_direct_buf);
UNLOCK_CLASS(env, clazz, "Lz4Decompressor");
if (uncompressed_bytes == 0) {
return (jint)0;
}
uncompressed_direct_buf_len = LZ4_uncompress_unknownOutputSize(compressed_bytes, uncompressed_bytes, compressed_direct_buf_len, uncompressed_direct_buf_len);
if (uncompressed_direct_buf_len < 0) {
THROW(env, "java/lang/InternalError", "LZ4_uncompress_unknownOutputSize failed.");
}
(*env)->SetIntField(env, thisj, Lz4Decompressor_compressedDirectBufLen, 0);
return (jint)uncompressed_direct_buf_len;
}
