skia2/include/core/SkYUVASizeInfo.h
Mike Klein c0bd9f9fe5 rewrite includes to not need so much -Ifoo
Current strategy: everything from the top

Things to look at first are the manual changes:

   - added tools/rewrite_includes.py
   - removed -Idirectives from BUILD.gn
   - various compile.sh simplifications
   - tweak tools/embed_resources.py
   - update gn/find_headers.py to write paths from the top
   - update gn/gn_to_bp.py SkUserConfig.h layout
     so that #include "include/config/SkUserConfig.h" always
     gets the header we want.

No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
2019-04-24 16:27:11 +00:00

69 lines
2.1 KiB
C

/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkYUVASizeInfo_DEFINED
#define SkYUVASizeInfo_DEFINED
#include "include/codec/SkEncodedOrigin.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkSize.h"
struct SK_API SkYUVASizeInfo {
static constexpr auto kMaxCount = 4;
SkISize fSizes[kMaxCount];
/**
* While the widths of the Y, U, V and A planes are not restricted, the
* implementation often requires that the width of the memory allocated
* for each plane be a multiple of 8.
*
* This struct allows us to inform the client how many "widthBytes"
* that we need. Note that we use the new idea of "widthBytes"
* because this idea is distinct from "rowBytes" (used elsewhere in
* Skia). "rowBytes" allow the last row of the allocation to not
* include any extra padding, while, in this case, every single row of
* the allocation must be at least "widthBytes".
*/
size_t fWidthBytes[kMaxCount];
/**
* YUVA data often comes from formats like JPEG that support EXIF orientation.
* Code that operates on the raw YUV data often needs to know that orientation.
*/
SkEncodedOrigin fOrigin = kDefault_SkEncodedOrigin;
bool operator==(const SkYUVASizeInfo& that) const {
for (int i = 0; i < kMaxCount; ++i) {
SkASSERT((!fSizes[i].isEmpty() && fWidthBytes[i]) ||
(fSizes[i].isEmpty() && !fWidthBytes[i]));
if (fSizes[i] != that.fSizes[i] || fWidthBytes[i] != that.fWidthBytes[i]) {
return false;
}
}
return true;
}
size_t computeTotalBytes() const {
size_t totalBytes = 0;
for (int i = 0; i < kMaxCount; ++i) {
SkASSERT((!fSizes[i].isEmpty() && fWidthBytes[i]) ||
(fSizes[i].isEmpty() && !fWidthBytes[i]));
totalBytes += fWidthBytes[i] * fSizes[i].height();
}
return totalBytes;
}
void computePlanes(void* base, void* planes[kMaxCount]) const;
};
#endif // SkYUVASizeInfo_DEFINED