cgit.sxemacs.org Git - harmattan/cameraplus/blob - lib/gst/gstcopy.cpp

   1 /*!
   2  * This file is part of CameraPlus.
   3  *
   4  * Copyright (C) 2012-2013 Mohammed Sameer <msameer@foolab.org>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  19  */
  20
  21 #include "gstcopy.h"
  22
  23 GST_DEBUG_CATEGORY_STATIC (gst_copy_debug);
  24 #define GST_CAT_DEFAULT gst_copy_debug
  25
  26 #ifndef PACKAGE
  27 #define PACKAGE "copy"
  28 #endif
  29
  30 #ifndef VERSION
  31 #define VERSION "0.1"
  32 #endif
  33
  34 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE ("src",
  35                                                                    GST_PAD_SRC,
  36                                                                    GST_PAD_ALWAYS,
  37                                                                    GST_STATIC_CAPS ("ANY")
  38                                                                    );
  39
  40 static GstStaticPadTemplate sink_factory = GST_STATIC_PAD_TEMPLATE ("sink",
  41                                                                     GST_PAD_SINK,
  42                                                                     GST_PAD_ALWAYS,
  43                                                                     GST_STATIC_CAPS ("ANY")
  44                                                                     );
  45
  46 GST_BOILERPLATE (GstCopy, gst_copy, GstBaseTransform,
  47                  GST_TYPE_BASE_TRANSFORM);
  48
  49 static GstFlowReturn gst_copy_transform_ip(GstBaseTransform *trans, GstBuffer *buf);
  50 static GstFlowReturn gst_copy_prepare_output_buffer(GstBaseTransform *trans, GstBuffer *input,
  51                                                     gint size, GstCaps *caps, GstBuffer **buf);
  52
  53 static void
  54 gst_copy_base_init(gpointer gclass) {
  55   GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
  56
  57   gst_element_class_set_details_simple(element_class,
  58                                        "Copy",
  59                                        "Generic",
  60                                        "Copy buffers",
  61                                        "Mohammed Sameer <msameer@foolab.org>>");
  62
  63   gst_element_class_add_pad_template(element_class,
  64                                      gst_static_pad_template_get(&src_factory));
  65   gst_element_class_add_pad_template(element_class,
  66                                      gst_static_pad_template_get(&sink_factory));
  67 }
  68
  69 static void
  70 gst_copy_class_init(GstCopyClass *klass) {
  71   GstBaseTransformClass *gstbasetrans_class = (GstBaseTransformClass *)klass;
  72
  73   gstbasetrans_class->transform_ip = GST_DEBUG_FUNCPTR(gst_copy_transform_ip);
  74   gstbasetrans_class->prepare_output_buffer = GST_DEBUG_FUNCPTR(gst_copy_prepare_output_buffer);
  75 }
  76
  77 static void
  78 gst_copy_init(GstCopy *copy, GstCopyClass *) {
  79   GstBaseTransform *trans = GST_BASE_TRANSFORM(copy);
  80
  81   gst_base_transform_set_passthrough(trans, FALSE);
  82   gst_base_transform_set_in_place(trans, TRUE);
  83 }
  84
  85 static GstFlowReturn
  86 gst_copy_transform_ip(GstBaseTransform *trans, GstBuffer *) {
  87   GST_DEBUG_OBJECT(trans, "transform ip");
  88
  89   return GST_FLOW_OK;
  90 }
  91
  92 static GstFlowReturn
  93 gst_copy_prepare_output_buffer(GstBaseTransform *trans, GstBuffer *input,
  94                                gint, GstCaps *, GstBuffer **buf) {
  95
  96   GST_DEBUG_OBJECT(trans, "prepare output buffer");
  97
  98   *buf = gst_buffer_copy(input);
  99
 100   return GST_FLOW_OK;
 101 }
 102
 103 static gboolean
 104 copy_init(GstPlugin *copy) {
 105   GST_DEBUG_CATEGORY_INIT(gst_copy_debug, "copy",
 106                           0, "Copy element");
 107
 108   return gst_element_register(copy, "copy", GST_RANK_NONE,
 109                               GST_TYPE_COPY);
 110 }
 111
 112
 113 GST_PLUGIN_DEFINE(GST_VERSION_MAJOR, GST_VERSION_MINOR, "copy", "Copy element",
 114                   copy_init, VERSION, "GPL", "", "")
 115
 116 gboolean qt_cam_copy_register() {
 117   return gst_plugin_register_static(GST_VERSION_MAJOR, GST_VERSION_MINOR,
 118                                   "copy", "Copy element",
 119                                   copy_init, VERSION,
 120                                   "GPL", "", "", "");
 121 }