// Copyright 2018 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "ui/gfx/linux/drm_util_linux.h"

#include <drm_fourcc.h>

#include "base/notreached.h"

namespace ui {

int GetFourCCFormatFromBufferFormat(gfx::BufferFormat format) {
  switch (format) {
    case gfx::BufferFormat::R_8:
      return DRM_FORMAT_R8;
    case gfx::BufferFormat::R_16:
      return DRM_FORMAT_R16;
    case gfx::BufferFormat::RG_88:
      return DRM_FORMAT_GR88;
    case gfx::BufferFormat::BGR_565:
      return DRM_FORMAT_RGB565;
    case gfx::BufferFormat::RGBA_4444:
      return DRM_FORMAT_INVALID;
    case gfx::BufferFormat::RGBA_8888:
      return DRM_FORMAT_ABGR8888;
    case gfx::BufferFormat::RGBX_8888:
      return DRM_FORMAT_XBGR8888;
    case gfx::BufferFormat::BGRA_8888:
      return DRM_FORMAT_ARGB8888;
    case gfx::BufferFormat::BGRX_8888:
      return DRM_FORMAT_XRGB8888;
    case gfx::BufferFormat::BGRA_1010102:
      return DRM_FORMAT_ARGB2101010;
    case gfx::BufferFormat::RGBA_1010102:
      return DRM_FORMAT_ABGR2101010;
    case gfx::BufferFormat::RGBA_F16:
      return DRM_FORMAT_INVALID;
    case gfx::BufferFormat::YVU_420:
      return DRM_FORMAT_YVU420;
    case gfx::BufferFormat::YUV_420_BIPLANAR:
      return DRM_FORMAT_NV12;
    case gfx::BufferFormat::P010:
      return DRM_FORMAT_P010;
  }
  return DRM_FORMAT_INVALID;
}

gfx::BufferFormat GetBufferFormatFromFourCCFormat(int format) {
  switch (format) {
    case DRM_FORMAT_R8:
      return gfx::BufferFormat::R_8;
    case DRM_FORMAT_GR88:
      return gfx::BufferFormat::RG_88;
    case DRM_FORMAT_ABGR8888:
      return gfx::BufferFormat::RGBA_8888;
    case DRM_FORMAT_XBGR8888:
      return gfx::BufferFormat::RGBX_8888;
    case DRM_FORMAT_ARGB8888:
      return gfx::BufferFormat::BGRA_8888;
    case DRM_FORMAT_XRGB8888:
      return gfx::BufferFormat::BGRX_8888;
    case DRM_FORMAT_ARGB2101010:
      return gfx::BufferFormat::BGRA_1010102;
    case DRM_FORMAT_ABGR2101010:
      return gfx::BufferFormat::RGBA_1010102;
    case DRM_FORMAT_RGB565:
      return gfx::BufferFormat::BGR_565;
    case DRM_FORMAT_NV12:
      return gfx::BufferFormat::YUV_420_BIPLANAR;
    case DRM_FORMAT_YVU420:
      return gfx::BufferFormat::YVU_420;
    case DRM_FORMAT_P010:
      return gfx::BufferFormat::P010;
    default:
      NOTREACHED();
      return gfx::BufferFormat::BGRA_8888;
  }
}

bool IsValidBufferFormat(uint32_t current_format) {
  switch (current_format) {
    case DRM_FORMAT_R8:
    case DRM_FORMAT_GR88:
    case DRM_FORMAT_ABGR8888:
    case DRM_FORMAT_XBGR8888:
    case DRM_FORMAT_ARGB8888:
    case DRM_FORMAT_XRGB8888:
    case DRM_FORMAT_ARGB2101010:
    case DRM_FORMAT_ABGR2101010:
    case DRM_FORMAT_RGB565:
    case DRM_FORMAT_NV12:
    case DRM_FORMAT_YVU420:
    case DRM_FORMAT_P010:
      return true;
    default:
      return false;
  }
}

}  // namespace ui