xbmc/platform/android/activity/JNIXBMCFile.cpp

   1 /*
   2  *  Copyright (C) 2018 Christian Browet
   3  *  This file is part of Kodi - https://kodi.tv
   4  *
   5  *  SPDX-License-Identifier: GPL-2.0-or-later
   6  *  See LICENSES/README.md for more information.
   7  */
   8
   9 #include "JNIXBMCFile.h"
  10
  11 #include "CompileInfo.h"
  12 #include "utils/FileUtils.h"
  13 #include "utils/log.h"
  14
  15 #include <androidjni/jutils-details.hpp>
  16
  17 #define BUFFSIZE 8192
  18
  19 using namespace jni;
  20
  21 static std::string s_className = std::string(CCompileInfo::GetClass()) + "/XBMCFile";
  22
  23 CJNIXBMCFile::CJNIXBMCFile()
  24   : CJNIBase()
  25 {
  26 }
  27
  28 void CJNIXBMCFile::RegisterNatives(JNIEnv *env)
  29 {
  30   jclass cClass = env->FindClass(s_className.c_str());
  31   if(cClass)
  32   {
  33     JNINativeMethod methods[] =
  34     {
  35       {"_open", "(Ljava/lang/String;)Z", (void*)&CJNIXBMCFile::_open},
  36       {"_close", "()V", (void*)&CJNIXBMCFile::_close},
  37       {"_read", "()[B", (void*)&CJNIXBMCFile::_read},
  38       {"_eof", "()Z", (void*)&CJNIXBMCFile::_eof},
  39     };
  40
  41     env->RegisterNatives(cClass, methods, sizeof(methods)/sizeof(methods[0]));
  42   }
  43 }
  44
  45 jboolean CJNIXBMCFile::_open(JNIEnv *env, jobject thiz, jstring path)
  46 {
  47   std::string strPath = jcast<std::string>(jhstring::fromJNI(path));
  48
  49   if (find_instance(thiz))
  50     return false;
  51
  52   if (!XFILE::CFile::Exists(strPath))
  53     return false;
  54
  55   CJNIXBMCFile* file = new CJNIXBMCFile();
  56   file->m_file.reset(new XFILE::CFile());
  57   bool ret = file->m_file->Open(strPath);
  58   if (!ret)
  59   {
  60     delete file;
  61     return false;
  62   }
  63
  64   jhobject jo = jhobject::fromJNI(thiz);
  65   jo.setGlobal();
  66   add_instance(jo, file);
  67   file->m_eof = false;
  68   return true;
  69 }
  70
  71 void CJNIXBMCFile::_close(JNIEnv *env, jobject thiz)
  72 {
  73   CJNIXBMCFile *inst = find_instance(thiz);
  74   if (inst)
  75   {
  76     inst->m_file->Close();
  77     remove_instance(inst);
  78     delete inst;
  79   }
  80 }
  81
  82 jbyteArray CJNIXBMCFile::_read(JNIEnv *env, jobject thiz)
  83 {
  84   ssize_t sz = 0;
  85   char buffer[BUFFSIZE];
  86
  87   CJNIXBMCFile *inst = find_instance(thiz);
  88   if (inst && inst->m_file)
  89   {
  90     sz = inst->m_file->Read((void*)buffer, BUFFSIZE);
  91     if (sz <= 0)
  92     {
  93       inst->m_eof = true;
  94       sz = 0;
  95     }
  96   }
  97
  98   jbyteArray jba = NULL;
  99   char*   pArray;
 100   jba = env->NewByteArray(sz);
 101   if ((pArray = (char*)env->GetPrimitiveArrayCritical(jba, NULL)))
 102   {
 103     memcpy(pArray, buffer, sz);
 104     env->ReleasePrimitiveArrayCritical(jba, pArray, 0);
 105   }
 106
 107   return jba;
 108 }
 109
 110 jboolean CJNIXBMCFile::_eof(JNIEnv *env, jobject thiz)
 111 {
 112   CJNIXBMCFile *inst = find_instance(thiz);
 113   if (inst)
 114     return inst->m_eof;
 115
 116   return true;
 117 }
 118
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