gstreamer/sys/androidcamera/gst-android-graphics-surfacetexture.c

/*
 * Copyright (C) 2012, Collabora Ltd.
 * Copyright (C) 2012, Cisco Systems, Inc.
 *   Author: Youness Alaoui <youness.alaoui@collabora.co.uk>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation
 * version 2.1 of the License.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA
 *
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "gst-dvm.h"
#include "gst-android-graphics-surfacetexture.h"


static struct
{
  jclass klass;
  jmethodID constructor;
  jmethodID release;
} android_graphics_surfacetexture;

gboolean
gst_android_graphics_surfacetexture_init ()
{
  JNIEnv *env = gst_dvm_get_env ();

  /* android.graphics.SurfaceTexture */
  GST_DVM_GET_CLASS (android_graphics_surfacetexture,
      "android/graphics/SurfaceTexture");
  GST_DVM_GET_CONSTRUCTOR (android_graphics_surfacetexture, constructor,
      "(I)V");
  GST_DVM_GET_METHOD (android_graphics_surfacetexture, release, "()V");

  return TRUE;
}


/* android.graphics.SurfaceTexture */
GstAGSurfaceTexture *
gst_ag_surfacetexture_new (gint texture_id)
{
  JNIEnv *env = gst_dvm_get_env ();
  jobject object = NULL;
  GstAGSurfaceTexture *tex = NULL;

  object = (*env)->NewObject (env,
      android_graphics_surfacetexture.klass,
      android_graphics_surfacetexture.constructor, texture_id);
  if ((*env)->ExceptionCheck (env) || !object) {
    GST_ERROR ("Failed to call Java method");
    (*env)->ExceptionClear (env);
    return NULL;
  }

  tex = g_slice_new0 (GstAGSurfaceTexture);
  tex->object = (*env)->NewGlobalRef (env, object);
  if (!tex->object) {
    GST_ERROR ("Failed to create global reference");
    (*env)->ExceptionClear (env);
    g_slice_free (GstAGSurfaceTexture, tex);
    tex = NULL;
  }
  (*env)->DeleteLocalRef (env, object);

  return tex;
}

void
gst_ag_surfacetexture_release (GstAGSurfaceTexture * self)
{
  JNIEnv *env = gst_dvm_get_env ();

  (*env)->CallVoidMethod (env, self->object,
      android_graphics_surfacetexture.release);

  (*env)->DeleteGlobalRef (env, self->object);
  g_slice_free (GstAGSurfaceTexture, self);
}