/*
 * Copyright (C) 2018 Red Hat
 *
 * This program 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 of the
 * License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */

#ifndef META_KMS_UPDATE_H
#define META_KMS_UPDATE_H

#include <glib-object.h>
#include <glib.h>
#include <stdint.h>
#include <xf86drmMode.h>

#include "backends/meta-monitor-transform.h"
#include "backends/native/meta-kms-types.h"
#include "meta/boxes.h"

typedef enum _MetaKmsFeedbackResult
{
  META_KMS_FEEDBACK_PASSED,
  META_KMS_FEEDBACK_FAILED,
} MetaKmsFeedbackResult;

typedef enum _MetaKmsAssignPlaneFlag
{
  META_KMS_ASSIGN_PLANE_FLAG_NONE = 0,
  META_KMS_ASSIGN_PLANE_FLAG_FB_UNCHANGED = 1 << 0,
} MetaKmsAssignPlaneFlag;

typedef enum _MetaKmsPageFlipFlag
{
  META_KMS_PAGE_FLIP_FLAG_NONE = 0,
  META_KMS_PAGE_FLIP_FLAG_NO_DISCARD_FEEDBACK = 1 << 0,
} MetaKmsPageFlipFlag;

struct _MetaKmsPageFlipFeedback
{
  void (* flipped) (MetaKmsCrtc  *crtc,
                    unsigned int  sequence,
                    unsigned int  tv_sec,
                    unsigned int  tv_usec,
                    gpointer      user_data);

  void (* mode_set_fallback) (MetaKmsCrtc *crtc,
                              gpointer     user_data);

  void (* discarded) (MetaKmsCrtc  *crtc,
                      gpointer      user_data,
                      const GError *error);
};

typedef int (* MetaKmsCustomPageFlipFunc) (gpointer custom_page_flip_data,
                                           gpointer user_data);

typedef struct _MetaKmsPlaneFeedback
{
  MetaKmsPlane *plane;
  MetaKmsCrtc *crtc;
  GError *error;
} MetaKmsPlaneFeedback;

void meta_kms_feedback_free (MetaKmsFeedback *feedback);

MetaKmsFeedbackResult meta_kms_feedback_get_result (MetaKmsFeedback *feedback);

GList * meta_kms_feedback_get_failed_planes (MetaKmsFeedback *feedback);

const GError * meta_kms_feedback_get_error (MetaKmsFeedback *feedback);

MetaKmsUpdate * meta_kms_update_new (void);

void meta_kms_update_free (MetaKmsUpdate *update);

void meta_kms_update_mode_set (MetaKmsUpdate *update,
                               MetaKmsCrtc   *crtc,
                               GList         *connectors,
                               MetaKmsMode   *mode);

MetaKmsPlaneAssignment * meta_kms_update_assign_plane (MetaKmsUpdate          *update,
                                                       MetaKmsCrtc            *crtc,
                                                       MetaKmsPlane           *plane,
                                                       uint32_t                fb_id,
                                                       MetaFixed16Rectangle    src_rect,
                                                       MetaFixed16Rectangle    dst_rect,
                                                       MetaKmsAssignPlaneFlag  flags);

MetaKmsPlaneAssignment * meta_kms_update_unassign_plane (MetaKmsUpdate *update,
                                                         MetaKmsCrtc   *crtc,
                                                         MetaKmsPlane  *plane);

void meta_kms_update_page_flip (MetaKmsUpdate                 *update,
                                MetaKmsCrtc                   *crtc,
                                const MetaKmsPageFlipFeedback *feedback,
                                MetaKmsPageFlipFlag            flags,
                                gpointer                       user_data);

void meta_kms_update_custom_page_flip (MetaKmsUpdate                 *update,
                                       MetaKmsCrtc                   *crtc,
                                       const MetaKmsPageFlipFeedback *feedback,
                                       gpointer                       user_data,
                                       MetaKmsCustomPageFlipFunc      custom_page_flip_func,
                                       gpointer                       custom_page_flip_user_data);

void meta_kms_plane_assignment_set_cursor_hotspot (MetaKmsPlaneAssignment *plane_assignment,
                                                   int                     x,
                                                   int                     y);

static inline MetaFixed16
meta_fixed_16_from_int (int16_t d)
{
  return d * 65536;
}

static inline int16_t
meta_fixed_16_to_int (MetaFixed16 fixed)
{
  return fixed / 65536;
}

static inline MetaRectangle
meta_fixed_16_rectangle_to_rectangle (MetaFixed16Rectangle fixed_rect)
{
  return (MetaRectangle) {
    .x = meta_fixed_16_to_int (fixed_rect.x),
    .y = meta_fixed_16_to_int (fixed_rect.y),
    .width = meta_fixed_16_to_int (fixed_rect.width),
    .height = meta_fixed_16_to_int (fixed_rect.height),
  };
}

G_DEFINE_AUTOPTR_CLEANUP_FUNC (MetaKmsFeedback, meta_kms_feedback_free)
G_DEFINE_AUTOPTR_CLEANUP_FUNC (MetaKmsUpdate, meta_kms_update_free)

#endif /* META_KMS_UPDATE_H */