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/* GStreamer
 * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "gstdsp66videokernel.h"

static GstStaticPadTemplate dsp66_video_kernel_src_factory =
GST_STATIC_PAD_TEMPLATE ("src",
    GST_PAD_SRC,
    GST_PAD_ALWAYS,
    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ I420, YV12 }"))
    );

static GstStaticPadTemplate dsp66_video_kernel_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
    GST_PAD_SINK,
    GST_PAD_ALWAYS,
    GST_STATIC_CAPS (GST_VIDEO_CAPS_MAKE ("{ I420, YV12 }"))
    );

/* Kernel signals and args */
enum
{
  /* FILL ME */
  LAST_SIGNAL
};

#define DEFAULT_FILTERSIZE   5
#define DEFAULT_LUM_ONLY     TRUE
#define DEFAULT_KERNELTYPE   GST_DSP66_VIDEO_KERNELTYPE_MEDIAN
enum
{
  PROP_0,
  PROP_FILTERSIZE,
  PROP_LUM_ONLY,
  PROP_KERNELTYPE
};

#define GST_TYPE_VIDEO_KERNEL_FILTERSIZE (gst_dsp66_video_kernel_filtersize_get_type())
#define GST_TYPE_VIDEO_KERNELTYPE (gst_dsp66_video_kerneltype_get_type())

static const GEnumValue dsp66_video_kernel_filtersizes[] = {
  {GST_DSP66_VIDEO_KERNEL_FILTERSIZE_5, "Kernel of 5 neighbour pixels", "5"},
  {GST_DSP66_VIDEO_KERNEL_FILTERSIZE_9, "Kernel of 9 neighbour pixels", "9"},
  {GST_DSP66_VIDEO_KERNEL_FILTERSIZE_25, "Kernel of 25 neighbour pixels", "25"},
  {0, NULL, NULL},
};
static const GEnumValue dsp66_video_kerneltype[] = {
  {GST_DSP66_VIDEO_KERNELTYPE_MEDIAN, "Kernel median", "0"},
  {GST_DSP66_VIDEO_KERNELTYPE_SOBEL, "Kernel sobel", "1"},
  {GST_DSP66_VIDEO_KERNELTYPE_CONV,  "Kernel conv",  "2"},
  {0, NULL, NULL},
};

static GType
gst_dsp66_video_kernel_filtersize_get_type (void)
{
  static GType dsp66_video_kernel_filtersize_type = 0;

  if (!dsp66_video_kernel_filtersize_type) {
    dsp66_video_kernel_filtersize_type = g_enum_register_static ("GstDsp66VideoKernelFilterSize",
        dsp66_video_kernel_filtersizes);
  }
  return dsp66_video_kernel_filtersize_type;
}

static GType
gst_dsp66_video_kerneltype_get_type (void)
{
  static GType dsp66_video_kerneltype_type = 0;

  if (!dsp66_video_kerneltype_type) {
    dsp66_video_kerneltype_type = g_enum_register_static ("GstDsp66VideoKernelType", dsp66_video_kerneltype);
  }
  return dsp66_video_kerneltype_type;
}

#define gst_dsp66_video_kernel_parent_class parent_class
G_DEFINE_TYPE (GstDsp66VideoKernel, gst_dsp66_video_kernel, GST_TYPE_VIDEO_FILTER);

static GstFlowReturn gst_dsp66_video_kernel_transform_frame (GstVideoFilter * filter,
    GstVideoFrame * in_frame, GstVideoFrame * out_frame);

static void gst_dsp66_video_kernel_set_property (GObject * object, guint prop_id,
    const GValue * value, GParamSpec * pspec);
static void gst_dsp66_video_kernel_get_property (GObject * object, guint prop_id,
    GValue * value, GParamSpec * pspec);

static void
gst_dsp66_video_kernel_class_init (GstDsp66VideoKernelClass * klass)
{
  GObjectClass *gobject_class;
  GstElementClass *gstelement_class;
  GstVideoFilterClass *vfilter_class;

  gobject_class = (GObjectClass *) klass;
  gstelement_class = (GstElementClass *) klass;
  vfilter_class = (GstVideoFilterClass *) klass;

  gobject_class->set_property = gst_dsp66_video_kernel_set_property;
  gobject_class->get_property = gst_dsp66_video_kernel_get_property;

  g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_FILTERSIZE,
      g_param_spec_enum ("filtersize", "Filtersize", "The size of the filter (5,9,25)",
          GST_TYPE_VIDEO_KERNEL_FILTERSIZE, DEFAULT_FILTERSIZE,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));

  g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_KERNELTYPE,
      g_param_spec_enum ("kerneltype", "Kerneltype", "Type of kernel (0=median, 1=sobel 2=conv 3=arbitrary)",
          GST_TYPE_VIDEO_KERNELTYPE, DEFAULT_KERNELTYPE,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));

  g_object_class_install_property (G_OBJECT_CLASS (klass), PROP_LUM_ONLY,
      g_param_spec_boolean ("lum-only", "Lum Only", "Only apply filter on "
          "luminance", DEFAULT_LUM_ONLY,
          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));

  gst_element_class_add_pad_template (gstelement_class,
      gst_static_pad_template_get (&dsp66_video_kernel_sink_factory));
  gst_element_class_add_pad_template (gstelement_class,
      gst_static_pad_template_get (&dsp66_video_kernel_src_factory));
  gst_element_class_set_static_metadata (gstelement_class, "Video kernels (choose: kerneltype, filtersize, lum-only, kernelname (opt))",
      "Video Kernel",
      "Apply a kernel via DSP C66 offload to an image",
      "based on work by: Wim Taymans <wim.taymans@gmail.com>");

  vfilter_class->transform_frame =
      GST_DEBUG_FUNCPTR (gst_dsp66_video_kernel_transform_frame);
}

void
gst_dsp66_video_kernel_init (GstDsp66VideoKernel * kernel)
{
  kernel->filtersize = DEFAULT_FILTERSIZE;
  kernel->kerneltype = DEFAULT_KERNELTYPE;
  kernel->lum_only   = DEFAULT_LUM_ONLY;
}

extern int oclconv_kernel(int kernel_type, int kernel_size, unsigned char *src, unsigned char *dest, int width, int height, int sstride, int dstride); 

static int 
imgproc (gint kerneltype, gint filtersize, 
    guint8 * dest, gint dstride, 
    const guint8 * src, gint sstride,
    gint width, gint height)
{
  return oclconv_kernel(kerneltype, filtersize, (unsigned char *)src, (unsigned char *)dest, width, height, sstride, dstride);
}

static GstFlowReturn
gst_dsp66_video_kernel_transform_frame (GstVideoFilter * filter,
    GstVideoFrame * in_frame, GstVideoFrame * out_frame)
{
  GstDsp66VideoKernel *kernel = GST_DSP66_VIDEO_KERNEL (filter);

    if(imgproc (kernel->kerneltype, kernel->filtersize, kernel->arbkernel,
        GST_VIDEO_FRAME_PLANE_DATA (out_frame, 0),
        GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 0),
        GST_VIDEO_FRAME_PLANE_DATA (in_frame, 0),
        GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 0),
        GST_VIDEO_FRAME_WIDTH (in_frame), GST_VIDEO_FRAME_HEIGHT (in_frame)) < 0)
    {
      gst_video_frame_copy_plane (out_frame, in_frame, 0);
      gst_video_frame_copy_plane (out_frame, in_frame, 1);
      gst_video_frame_copy_plane (out_frame, in_frame, 2);
    }
    if (kernel->lum_only) {
      gst_video_frame_copy_plane (out_frame, in_frame, 1);
      gst_video_frame_copy_plane (out_frame, in_frame, 2);
    } else {
      imgproc (kernel->kerneltype, kernel->filtersize,
          GST_VIDEO_FRAME_PLANE_DATA (out_frame, 1),
          GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 1),
          GST_VIDEO_FRAME_PLANE_DATA (in_frame, 1),
          GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 1),
          GST_VIDEO_FRAME_WIDTH (in_frame) / 2,
          GST_VIDEO_FRAME_HEIGHT (in_frame) / 2);
      imgproc (kernel->kerneltype, kernel->filtersize,
          GST_VIDEO_FRAME_PLANE_DATA (out_frame, 2),
          GST_VIDEO_FRAME_PLANE_STRIDE (out_frame, 2),
          GST_VIDEO_FRAME_PLANE_DATA (in_frame, 2),
          GST_VIDEO_FRAME_PLANE_STRIDE (in_frame, 2),
          GST_VIDEO_FRAME_WIDTH (in_frame) / 2,
          GST_VIDEO_FRAME_HEIGHT (in_frame) / 2);
    }

  return GST_FLOW_OK;
}

static void
gst_dsp66_video_kernel_set_property (GObject * object, guint prop_id,
    const GValue * value, GParamSpec * pspec)
{
  GstDsp66VideoKernel *kernel;

  kernel = GST_DSP66_VIDEO_KERNEL (object);

  switch (prop_id) {
    case PROP_FILTERSIZE:
      kernel->filtersize = g_value_get_enum (value);
      break;
    case PROP_LUM_ONLY:
      kernel->lum_only   = g_value_get_boolean (value);
      break;
    case PROP_KERNELTYPE:
      kernel->kerneltype = g_value_get_enum (value);
      break;
    default:
      break;
  }
}

static void
gst_dsp66_video_kernel_get_property (GObject * object, guint prop_id, GValue * value,
    GParamSpec * pspec)
{
  GstDsp66VideoKernel *kernel;

  kernel = GST_DSP66_VIDEO_KERNEL (object);

  switch (prop_id) {
    case PROP_FILTERSIZE:
      g_value_set_enum (value, kernel->filtersize);
      break;
    case PROP_LUM_ONLY:
      g_value_set_boolean (value, kernel->lum_only);
      break;
    case PROP_KERNELTYPE:
      g_value_set_enum (value, kernel->kerneltype);
      break;
    default:
      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
      break;
  }
}
/** nothing past this point **/