/* GStreamer
 * Copyright (C) 2021 Seungha Yang <seungha@centricular.com>
 *
 * 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 "gstqsvallocator_va.h"

GST_DEBUG_CATEGORY_EXTERN (gst_qsv_allocator_debug);
#define GST_CAT_DEFAULT gst_qsv_allocator_debug

struct _GstQsvVaAllocator
{
  GstQsvAllocator parent;

  GstVaDisplay *display;
};

#define gst_qsv_va_allocator_parent_class parent_class
G_DEFINE_TYPE (GstQsvVaAllocator, gst_qsv_va_allocator, GST_TYPE_QSV_ALLOCATOR);

static void gst_qsv_va_allocator_dispose (GObject * object);
static mfxStatus gst_qsv_va_allocator_alloc (GstQsvAllocator * allocator,
    gboolean dummy_alloc, mfxFrameAllocRequest * request,
    mfxFrameAllocResponse * response);
static GstBuffer *gst_qsv_va_allocator_upload (GstQsvAllocator * allocator,
    const GstVideoInfo * info, GstBuffer * buffer, GstBufferPool * pool);
static GstBuffer *gst_qsv_va_allocator_download (GstQsvAllocator * allocator,
    const GstVideoInfo * info, gboolean force_copy, GstQsvFrame * frame,
    GstBufferPool * pool);

static void
gst_qsv_va_allocator_class_init (GstQsvVaAllocatorClass * klass)
{
  GObjectClass *object_class = G_OBJECT_CLASS (klass);
  GstQsvAllocatorClass *alloc_class = GST_QSV_ALLOCATOR_CLASS (klass);

  object_class->dispose = gst_qsv_va_allocator_dispose;

  alloc_class->alloc = GST_DEBUG_FUNCPTR (gst_qsv_va_allocator_alloc);
  alloc_class->upload = GST_DEBUG_FUNCPTR (gst_qsv_va_allocator_upload);
  alloc_class->download = GST_DEBUG_FUNCPTR (gst_qsv_va_allocator_download);
}

static void
gst_qsv_va_allocator_init (GstQsvVaAllocator * self)
{
}

static void
gst_qsv_va_allocator_dispose (GObject * object)
{
  GstQsvVaAllocator *self = GST_QSV_VA_ALLOCATOR (object);

  gst_clear_object (&self->display);

  G_OBJECT_CLASS (parent_class)->dispose (object);
}

static mfxStatus
gst_qsv_va_allocator_alloc (GstQsvAllocator * allocator, gboolean dummy_alloc,
    mfxFrameAllocRequest * request, mfxFrameAllocResponse * response)
{
  GST_ERROR_OBJECT (allocator, "Not implemented");

  return MFX_ERR_UNSUPPORTED;
}

static GstBuffer *
gst_qsv_va_allocator_upload (GstQsvAllocator * allocator,
    const GstVideoInfo * info, GstBuffer * buffer, GstBufferPool * pool)
{
  GST_ERROR_OBJECT (allocator, "Not implemented");

  return nullptr;
}

static GstBuffer *
gst_qsv_va_allocator_download (GstQsvAllocator * allocator,
    const GstVideoInfo * info, gboolean force_copy, GstQsvFrame * frame,
    GstBufferPool * pool)
{
  GST_ERROR_OBJECT (allocator, "Not implemented");

  return nullptr;
}

GstQsvAllocator *
gst_qsv_va_allocator_new (GstVaDisplay * display)
{
  GstQsvVaAllocator *self;

  g_return_val_if_fail (GST_IS_VA_DISPLAY (display), nullptr);

  self = (GstQsvVaAllocator *)
      g_object_new (GST_TYPE_QSV_VA_ALLOCATOR, nullptr);
  self->display = (GstVaDisplay *) gst_object_ref (display);

  gst_object_ref_sink (self);

  return GST_QSV_ALLOCATOR (self);
}