ppapi/shared_impl/ppb_image_data_shared.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ppapi/shared_impl/ppb_image_data_shared.h"
   6
   7 #include "base/logging.h"
   8 #include "build/build_config.h"
   9
  10 #if !defined(OS_NACL) && !defined(NACL_WIN64)
  11 #include "third_party/skia/include/core/SkTypes.h"
  12 #endif
  13
  14 namespace ppapi {
  15
  16 // static
  17 PP_ImageDataFormat PPB_ImageData_Shared::GetNativeImageDataFormat() {
  18 #if defined(OS_NACL)
  19   // In NaCl, just default to something. If we're wrong, it will be converted
  20   // later.
  21   // TODO(dmichael): Really proxy this.
  22   return PP_IMAGEDATAFORMAT_BGRA_PREMUL;
  23 #elif defined(NACL_WIN64)
  24   // In the NaCl Win64 helper, this shouldn't be called. If we start building
  25   // Chrome on Windows 64 for realz, we should really implement this.
  26   NOTIMPLEMENTED();
  27   return PP_IMAGEDATAFORMAT_BGRA_PREMUL;
  28 #else
  29   if (SK_B32_SHIFT == 0)
  30     return PP_IMAGEDATAFORMAT_BGRA_PREMUL;
  31   else if (SK_R32_SHIFT == 0)
  32     return PP_IMAGEDATAFORMAT_RGBA_PREMUL;
  33   else
  34     return PP_IMAGEDATAFORMAT_BGRA_PREMUL;  // Default to something on failure
  35 #endif
  36 }
  37
  38 // static
  39 PP_Bool PPB_ImageData_Shared::IsImageDataFormatSupported(
  40     PP_ImageDataFormat format) {
  41   return PP_FromBool(format == PP_IMAGEDATAFORMAT_BGRA_PREMUL ||
  42                      format == PP_IMAGEDATAFORMAT_RGBA_PREMUL);
  43 }
  44
  45 // static
  46 PP_Bool PPB_ImageData_Shared::IsImageDataDescValid(
  47     const PP_ImageDataDesc& desc) {
  48   return PP_FromBool(IsImageDataFormatSupported(desc.format) &&
  49                      desc.size.width > 0 && desc.size.height > 0 &&
  50                      desc.stride > 0);
  51 }
  52
  53 }  // namespace ppapi