1 files changed, 290 insertions, 0 deletions
diff --git a/libjava/classpath/native/jni/gstreamer-peer/gst_input_stream.c b/libjava/classpath/native/jni/gstreamer-peer/gst_input_stream.c
new file mode 100644
index 000000000..c5e512954
--- /dev/null
+++ b/libjava/classpath/native/jni/gstreamer-peer/gst_input_stream.c
@@ -0,0 +1,290 @@
+/*GstInputStream.c - Header file for the GstClasspathPlugin
+ Copyright (C) 2007 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+#include <jni.h>
+#include <jcl.h>
+
+#include <string.h>
+#include <stdlib.h>
+
+#include <gdk/gdk.h>
+
+#include <glib.h>
+
+#include "gst_peer.h"
+
+#include "gnu_javax_sound_sampled_gstreamer_io_GstInputStream.h"
+#include "gst_input_stream.h"
+
+/* for caching */
+static jmethodID readID = NULL;
+static jmethodID pointerConstructorID = NULL;
+static jmethodID availableID = NULL;
+
+static jfieldID streamID = NULL;
+static jfieldID pointerDataID = NULL;
+
+struct _GstInputStreamPrivate
+{
+  JavaVM *vm;
+  jclass readerClass;
+  jclass pointerClass;
+  
+  jobject reader;
+};
+
+/* ************************************************************************** */
+
+static void init_pointer_IDs (JNIEnv* env);
+
+/* ************************************************************************** */
+
+/* JNI Methods */
+
+JNIEXPORT void JNICALL
+Java_gnu_javax_sound_sampled_gstreamer_io_GstInputStream_init_1id_1cache
+  (JNIEnv *env, jclass clazz)
+{
+  readID = (*env)->GetMethodID(env, clazz, "read", "([BII)I");
+  availableID = (*env)->GetMethodID(env, clazz, "available", "()I");
+  
+  streamID = (*env)->GetFieldID(env, clazz, "gstInputStream",
+                                "Lgnu/classpath/Pointer;");
+  init_pointer_IDs(env);
+}
+
+JNIEXPORT void JNICALL
+Java_gnu_javax_sound_sampled_gstreamer_io_GstInputStream_init_1instance
+  (JNIEnv *env, jobject reader)
+{
+  GstInputStream *istream = NULL;
+  
+  jclass localReader = NULL;
+  jclass localPointer = NULL;
+  jobject _pointer = NULL;
+  
+  istream = (GstInputStream *) JCL_malloc (env, sizeof (GstInputStream));
+  if (istream == NULL)
+    return;
+   
+  istream->priv = (GstInputStreamPrivate *)
+      JCL_malloc (env, sizeof (GstInputStreamPrivate));
+  if (istream->priv == NULL)
+    {
+      JCL_free (env, istream);
+      return;
+    }
+  
+  /* get a local references first */
+  localReader = (*env)->GetObjectClass(env, reader);
+  if (localReader == NULL)
+    {
+      JCL_free (env, istream->priv);
+      JCL_free (env, istream);
+      JCL_ThrowException (env, "java/lang/InternalError",
+                               "Class Initialization failed.");
+      
+      return;
+    }
+  
+#if SIZEOF_VOID_P == 8
+  localPointer = JCL_FindClass (env, "gnu/classpath/Pointer64");
+#else
+# if SIZEOF_VOID_P == 4
+  localPointer = JCL_FindClass (env, "gnu/classpath/Pointer32");
+# else
+#   error "Pointer size is not supported."
+# endif /* SIZEOF_VOID_P == 4 */
+#endif /* SIZEOF_VOID_P == 8 */
+
+  if (localReader == NULL || localPointer == NULL)
+    { 
+      JCL_free (env, istream->priv);
+      JCL_free (env, istream);
+      JCL_ThrowException (env, "java/lang/InternalError",
+                               "Class Initialization failed.");
+      return;
+    }
+
+  /* fill out our structure */
+  istream->priv->readerClass = (*env)->NewGlobalRef(env, localReader);
+  istream->priv->pointerClass = (*env)->NewGlobalRef(env, localPointer);
+  (*env)->GetJavaVM(env, &istream->priv->vm);
+  istream->priv->reader = (*env)->NewGlobalRef(env, reader);
+  
+  _pointer = (*env)->GetObjectField(env, reader, streamID);
+  
+   /* this should be always null */
+  if (_pointer == NULL)
+    {
+#if SIZEOF_VOID_P == 8
+      _pointer = (*env)->NewObject(env, istream->priv->pointerClass,
+                                   pointerConstructorID, (jlong) istream);
+#else
+      _pointer = (*env)->NewObject(env, istream->priv->pointerClass,
+                                   pointerConstructorID, (jint) istream);
+#endif
+    }
+  else
+    {
+#if SIZEOF_VOID_P == 8
+      (*env)->SetLongField(env, reader, streamID, (jlong) istream);
+#else
+      (*env)->SetIntField(env, reader, streamID, (jint) istream);
+#endif
+    }
+    
+    /* store back our pointer into the calling class */
+    (*env)->SetObjectField(env, reader, streamID, _pointer);
+}
+
+/* exported library functions */
+
+void
+gst_input_stream_clean (GstInputStream *self)
+{
+  JNIEnv *env = NULL;
+  
+  env = gst_get_jenv (self->priv->vm);
+  
+  (*env)->DeleteGlobalRef (env, self->priv->reader);
+  (*env)->DeleteGlobalRef (env, self->priv->readerClass);
+  (*env)->DeleteGlobalRef (env, self->priv->pointerClass);
+  
+  JCL_free (env, self->priv);
+  JCL_free (env, self);
+}
+
+int
+gst_input_stream_available (GstInputStream *self)
+{
+  JNIEnv *env = NULL;
+  
+  if (self == NULL || self->priv == NULL ||
+      self->priv->vm == NULL || self->priv->reader == NULL)
+    {
+      return -1;
+    }
+  
+  env = gst_get_jenv (self->priv->vm);
+  if (env == NULL)
+    {
+      g_warning("GstInputStream::gst_input_stream_available " \
+                "failed to get java env");
+      return -1;
+    }
+  
+  return (*env)->CallIntMethod (env, self->priv->reader, availableID); 
+}
+
+int
+gst_input_stream_read (GstInputStream *self, int *data, int offset,
+                       int length)
+{
+  JNIEnv *env = NULL;
+  
+  int ret = -1;
+  jbyteArray buffer;
+  jbyte *bytes = NULL;
+  
+  if (self == NULL || self->priv == NULL ||
+      self->priv->vm == NULL || self->priv->reader == NULL)
+    {
+      return -1;
+    }
+
+  env = gst_get_jenv (self->priv->vm);
+  if (env == NULL)
+    {
+      g_warning("GstInputStream::gst_input_stream_read failed to get java env");
+      return -1;
+    }
+   
+  buffer = (*env)->NewByteArray (env, length);   
+  if (buffer == NULL)
+    {
+      g_warning ("GstInputStream::gst_input_stream_read called, failed");
+      return -1;
+    }
+
+  ret = (*env)->CallIntMethod (env, self->priv->reader, readID, buffer, 0,
+                               length);
+  if (ret < 0)
+    {
+      (*env)->DeleteLocalRef(env, buffer);
+      return ret;
+    }
+  
+  bytes = (*env)->GetByteArrayElements (env, buffer, NULL);
+  
+  /* copy bytes and release */
+  memcpy (data + offset, bytes, ret);
+  
+  (*env)->ReleaseByteArrayElements (env, buffer, bytes, 0);
+  (*env)->DeleteLocalRef (env, buffer);
+
+  return ret;
+}
+
+/* private functions */
+
+static void init_pointer_IDs (JNIEnv* env)
+{
+  jclass pointerClass = NULL;
+  
+#if SIZEOF_VOID_P == 8
+  pointerClass = JCL_FindClass (env, "gnu/classpath/Pointer64");
+  if (pointerClass != NULL)
+    {
+      pointerDataID = (*env)->GetFieldID (env, pointerClass, "data", "J");
+      pointerConstructorID = (*env)->GetMethodID (env, pointerClass, "<init>",
+                                                  "(J)V");
+    }
+#else
+# if SIZEOF_VOID_P == 4
+  pointerClass = JCL_FindClass (env, "gnu/classpath/Pointer32"); 
+  if (pointerClass != NULL)
+    { 
+      pointerDataID = (*env)->GetFieldID(env, pointerClass, "data", "I");
+      pointerConstructorID = (*env)->GetMethodID(env, pointerClass,
+                                                 "<init>", "(I)V");
+    }
+# else
+#   error "Pointer size is not supported."
+# endif /* SIZEOF_VOID_P == 4 */
+#endif /* SIZEOF_VOID_P == 8 */
+}