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- // Copyright 2015 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/buffer_format_util.h"
- #include "base/check_op.h"
- #include "base/notreached.h"
- #include "base/numerics/safe_math.h"
- #include "ui/gfx/switches.h"
- namespace gfx {
- namespace {
- const BufferFormat kBufferFormats[] = {
- BufferFormat::R_8, BufferFormat::R_16,
- BufferFormat::RG_88, BufferFormat::RG_1616,
- BufferFormat::BGR_565, BufferFormat::RGBA_4444,
- BufferFormat::RGBX_8888, BufferFormat::RGBA_8888,
- BufferFormat::BGRX_8888, BufferFormat::BGRA_1010102,
- BufferFormat::RGBA_1010102, BufferFormat::BGRA_8888,
- BufferFormat::RGBA_F16, BufferFormat::YUV_420_BIPLANAR,
- BufferFormat::YVU_420, BufferFormat::P010};
- static_assert(std::size(kBufferFormats) ==
- (static_cast<int>(BufferFormat::LAST) + 1),
- "BufferFormat::LAST must be last value of kBufferFormats");
- } // namespace
- std::vector<BufferFormat> GetBufferFormatsForTesting() {
- return std::vector<BufferFormat>(kBufferFormats,
- kBufferFormats + std::size(kBufferFormats));
- }
- size_t AlphaBitsForBufferFormat(BufferFormat format) {
- switch (format) {
- case BufferFormat::RGBA_4444:
- return 4;
- case BufferFormat::RGBA_8888:
- return 8;
- case BufferFormat::BGRA_1010102:
- case BufferFormat::RGBA_1010102:
- return 2;
- case BufferFormat::BGRA_8888:
- return 8;
- case BufferFormat::RGBA_F16:
- return 16;
- case BufferFormat::R_8:
- case BufferFormat::R_16:
- case BufferFormat::RG_88:
- case BufferFormat::RG_1616:
- case BufferFormat::BGR_565:
- case BufferFormat::RGBX_8888:
- case BufferFormat::BGRX_8888:
- case BufferFormat::YVU_420:
- case BufferFormat::YUV_420_BIPLANAR:
- case BufferFormat::P010:
- return 0;
- }
- NOTREACHED();
- return 0;
- }
- size_t NumberOfPlanesForLinearBufferFormat(BufferFormat format) {
- switch (format) {
- case BufferFormat::R_8:
- case BufferFormat::R_16:
- case BufferFormat::RG_88:
- case BufferFormat::RG_1616:
- case BufferFormat::BGR_565:
- case BufferFormat::RGBA_4444:
- case BufferFormat::RGBX_8888:
- case BufferFormat::RGBA_8888:
- case BufferFormat::BGRX_8888:
- case BufferFormat::BGRA_1010102:
- case BufferFormat::RGBA_1010102:
- case BufferFormat::BGRA_8888:
- case BufferFormat::RGBA_F16:
- return 1;
- case BufferFormat::YUV_420_BIPLANAR:
- case BufferFormat::P010:
- return 2;
- case BufferFormat::YVU_420:
- return 3;
- }
- NOTREACHED();
- return 0;
- }
- size_t SubsamplingFactorForBufferFormat(BufferFormat format, size_t plane) {
- switch (format) {
- case BufferFormat::R_8:
- case BufferFormat::R_16:
- case BufferFormat::RG_88:
- case BufferFormat::RG_1616:
- case BufferFormat::BGR_565:
- case BufferFormat::RGBA_4444:
- case BufferFormat::RGBX_8888:
- case BufferFormat::RGBA_8888:
- case BufferFormat::BGRX_8888:
- case BufferFormat::BGRA_1010102:
- case BufferFormat::RGBA_1010102:
- case BufferFormat::BGRA_8888:
- case BufferFormat::RGBA_F16:
- return 1;
- case BufferFormat::YVU_420: {
- constexpr size_t factor[] = {1, 2, 2};
- DCHECK_LT(plane, std::size(factor));
- return factor[plane];
- }
- case BufferFormat::YUV_420_BIPLANAR:
- case BufferFormat::P010: {
- constexpr size_t factor[] = {1, 2};
- DCHECK_LT(plane, std::size(factor));
- return factor[plane];
- }
- }
- NOTREACHED();
- return 0;
- }
- size_t PlaneWidthForBufferFormat(size_t width,
- BufferFormat format,
- size_t plane) {
- const size_t subsample = SubsamplingFactorForBufferFormat(format, plane);
- return (width + subsample - 1) / subsample;
- }
- size_t PlaneHeightForBufferFormat(size_t height,
- BufferFormat format,
- size_t plane) {
- const size_t subsample = SubsamplingFactorForBufferFormat(format, plane);
- return (height + subsample - 1) / subsample;
- }
- size_t BytesPerPixelForBufferFormat(BufferFormat format, size_t plane) {
- switch (format) {
- case BufferFormat::R_8:
- return 1;
- case BufferFormat::R_16:
- case BufferFormat::RG_88:
- case BufferFormat::BGR_565:
- case BufferFormat::RGBA_4444:
- return 2;
- case BufferFormat::RG_1616:
- case BufferFormat::BGRX_8888:
- case BufferFormat::BGRA_1010102:
- case BufferFormat::RGBA_1010102:
- case BufferFormat::RGBX_8888:
- case BufferFormat::RGBA_8888:
- case BufferFormat::BGRA_8888:
- return 4;
- case BufferFormat::RGBA_F16:
- return 8;
- case BufferFormat::YVU_420:
- return 1;
- case BufferFormat::YUV_420_BIPLANAR:
- return SubsamplingFactorForBufferFormat(format, plane);
- case BufferFormat::P010:
- return 2 * SubsamplingFactorForBufferFormat(format, plane);
- }
- NOTREACHED();
- return 0;
- }
- size_t RowByteAlignmentForBufferFormat(BufferFormat format, size_t plane) {
- switch (format) {
- case BufferFormat::R_8:
- case BufferFormat::R_16:
- case BufferFormat::RG_88:
- case BufferFormat::BGR_565:
- case BufferFormat::RGBA_4444:
- case BufferFormat::RG_1616:
- case BufferFormat::BGRX_8888:
- case BufferFormat::BGRA_1010102:
- case BufferFormat::RGBA_1010102:
- case BufferFormat::RGBX_8888:
- case BufferFormat::RGBA_8888:
- case BufferFormat::BGRA_8888:
- return 4;
- case BufferFormat::RGBA_F16:
- return 8;
- case BufferFormat::YVU_420:
- return 1;
- case BufferFormat::YUV_420_BIPLANAR:
- case BufferFormat::P010:
- return BytesPerPixelForBufferFormat(format, plane);
- }
- NOTREACHED();
- return 0;
- }
- size_t RowSizeForBufferFormat(size_t width, BufferFormat format, size_t plane) {
- size_t row_size = 0;
- bool valid = RowSizeForBufferFormatChecked(width, format, plane, &row_size);
- DCHECK(valid);
- return row_size;
- }
- bool RowSizeForBufferFormatChecked(size_t width,
- BufferFormat format,
- size_t plane,
- size_t* size_in_bytes) {
- base::CheckedNumeric<size_t> checked_size =
- PlaneWidthForBufferFormat(width, format, plane);
- checked_size *= BytesPerPixelForBufferFormat(format, plane);
- const size_t alignment = RowByteAlignmentForBufferFormat(format, plane);
- checked_size = (checked_size + alignment - 1) & ~(alignment - 1);
- if (!checked_size.IsValid())
- return false;
- *size_in_bytes = checked_size.ValueOrDie();
- return true;
- }
- size_t PlaneSizeForBufferFormat(const Size& size,
- BufferFormat format,
- size_t plane) {
- size_t plane_size = 0;
- bool valid =
- PlaneSizeForBufferFormatChecked(size, format, plane, &plane_size);
- DCHECK(valid);
- return plane_size;
- }
- bool PlaneSizeForBufferFormatChecked(const Size& size,
- BufferFormat format,
- size_t plane,
- size_t* size_in_bytes) {
- size_t row_size = 0;
- if (!RowSizeForBufferFormatChecked(size.width(), format, plane, &row_size))
- return false;
- base::CheckedNumeric<size_t> checked_plane_size = row_size;
- checked_plane_size *=
- PlaneHeightForBufferFormat(size.height(), format, plane);
- if (!checked_plane_size.IsValid())
- return false;
- *size_in_bytes = checked_plane_size.ValueOrDie();
- return true;
- }
- size_t BufferSizeForBufferFormat(const Size& size, BufferFormat format) {
- size_t buffer_size = 0;
- bool valid = BufferSizeForBufferFormatChecked(size, format, &buffer_size);
- DCHECK(valid);
- return buffer_size;
- }
- bool BufferSizeForBufferFormatChecked(const Size& size,
- BufferFormat format,
- size_t* size_in_bytes) {
- base::CheckedNumeric<size_t> checked_size = 0;
- size_t num_planes = NumberOfPlanesForLinearBufferFormat(format);
- for (size_t i = 0; i < num_planes; ++i) {
- size_t plane_size = 0;
- if (!PlaneSizeForBufferFormatChecked(size, format, i, &plane_size))
- return false;
- checked_size += plane_size;
- if (!checked_size.IsValid())
- return false;
- }
- *size_in_bytes = checked_size.ValueOrDie();
- return true;
- }
- size_t BufferOffsetForBufferFormat(const Size& size,
- BufferFormat format,
- size_t plane) {
- DCHECK_LT(plane, gfx::NumberOfPlanesForLinearBufferFormat(format));
- switch (format) {
- case BufferFormat::R_8:
- case BufferFormat::R_16:
- case BufferFormat::RG_88:
- case BufferFormat::RG_1616:
- case BufferFormat::BGR_565:
- case BufferFormat::RGBA_4444:
- case BufferFormat::RGBX_8888:
- case BufferFormat::RGBA_8888:
- case BufferFormat::BGRX_8888:
- case BufferFormat::BGRA_1010102:
- case BufferFormat::RGBA_1010102:
- case BufferFormat::BGRA_8888:
- case BufferFormat::RGBA_F16:
- return 0;
- case BufferFormat::YVU_420:
- case BufferFormat::YUV_420_BIPLANAR:
- case BufferFormat::P010: {
- size_t offset = 0;
- for (size_t i = 0; i < plane; i++) {
- offset += PlaneSizeForBufferFormat(size, format, i);
- }
- return offset;
- }
- }
- NOTREACHED();
- return 0;
- }
- const char* BufferFormatToString(BufferFormat format) {
- switch (format) {
- case BufferFormat::R_8:
- return "R_8";
- case BufferFormat::R_16:
- return "R_16";
- case BufferFormat::RG_88:
- return "RG_88";
- case BufferFormat::RG_1616:
- return "RG_1616";
- case BufferFormat::BGR_565:
- return "BGR_565";
- case BufferFormat::RGBA_4444:
- return "RGBA_4444";
- case BufferFormat::RGBX_8888:
- return "RGBX_8888";
- case BufferFormat::RGBA_8888:
- return "RGBA_8888";
- case BufferFormat::BGRX_8888:
- return "BGRX_8888";
- case BufferFormat::BGRA_1010102:
- return "BGRA_1010102";
- case BufferFormat::RGBA_1010102:
- return "RGBA_1010102";
- case BufferFormat::BGRA_8888:
- return "BGRA_8888";
- case BufferFormat::RGBA_F16:
- return "RGBA_F16";
- case BufferFormat::YVU_420:
- return "YVU_420";
- case BufferFormat::YUV_420_BIPLANAR:
- return "YUV_420_BIPLANAR";
- case BufferFormat::P010:
- return "P010";
- }
- NOTREACHED()
- << "Invalid BufferFormat: "
- << static_cast<typename std::underlying_type<BufferFormat>::type>(format);
- return "Invalid Format";
- }
- const char* BufferPlaneToString(BufferPlane format) {
- switch (format) {
- case BufferPlane::DEFAULT:
- return "DEFAULT";
- case BufferPlane::Y:
- return "Y";
- case BufferPlane::UV:
- return "UV";
- case BufferPlane::U:
- return "U";
- case BufferPlane::V:
- return "V";
- }
- NOTREACHED() << "Invalid BufferPlane: "
- << static_cast<typename std::underlying_type<BufferPlane>::type>(
- format);
- return "Invalid Plane";
- }
- bool IsOddHeightMultiPlanarBuffersAllowed() {
- return base::FeatureList::IsEnabled(features::kOddHeightMultiPlanarBuffers);
- }
- bool IsOddWidthMultiPlanarBuffersAllowed() {
- return base::FeatureList::IsEnabled(features::kOddWidthMultiPlanarBuffers);
- }
- } // namespace gfx
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