429f0d380c
This also switches GrColorType::kR_16 to kAlpha_16 to more closely match raster. Bug: skia:9121 Change-Id: I03c6e6c52c90aa4223478c5ea6c8b2ed8558f677 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/239930 Commit-Queue: Robert Phillips <robertphillips@google.com> Reviewed-by: Mike Klein <mtklein@google.com> Reviewed-by: Brian Salomon <bsalomon@google.com>
1642 lines
63 KiB
C++
1642 lines
63 KiB
C++
/*
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* Copyright 2018 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm/gm.h"
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#include "include/core/SkBitmap.h"
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#include "include/core/SkBlendMode.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkColorFilter.h"
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#include "include/core/SkColorPriv.h"
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#include "include/core/SkColorSpace.h"
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#include "include/core/SkFilterQuality.h"
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#include "include/core/SkFont.h"
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#include "include/core/SkFontStyle.h"
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#include "include/core/SkFontTypes.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkImageGenerator.h"
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#include "include/core/SkImageInfo.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkPath.h"
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#include "include/core/SkPixmap.h"
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#include "include/core/SkPoint.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTypeface.h"
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#include "include/core/SkTypes.h"
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#include "include/core/SkYUVAIndex.h"
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#include "include/core/SkYUVASizeInfo.h"
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#include "include/gpu/GrBackendSurface.h"
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#include "include/gpu/GrConfig.h"
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#include "include/gpu/GrContext.h"
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#include "include/gpu/GrTypes.h"
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#include "include/private/GrTypesPriv.h"
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#include "include/private/SkTArray.h"
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#include "include/private/SkTDArray.h"
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#include "include/private/SkTemplates.h"
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#include "include/utils/SkTextUtils.h"
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#include "src/gpu/GrContextPriv.h"
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#include "src/gpu/GrGpu.h"
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#include "tools/ToolUtils.h"
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#include <math.h>
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#include <string.h>
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#include <initializer_list>
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#include <memory>
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#include <utility>
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class GrRenderTargetContext;
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static const int kTileWidthHeight = 128;
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static const int kLabelWidth = 64;
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static const int kLabelHeight = 32;
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static const int kDomainPadding = 8;
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static const int kPad = 1;
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enum YUVFormat {
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// 4:2:0 formats, 24 bpp
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kP016_YUVFormat, // 16-bit Y plane + 2x2 down sampled interleaved U/V plane (2 textures)
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// 4:2:0 formats, "15 bpp" (but really 24 bpp)
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kP010_YUVFormat, // same as kP016 except "10 bpp". Note that it is the same memory layout
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// except that the bottom 6 bits are zeroed out (2 textures)
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// TODO: we're cheating a bit w/ P010 and just treating it as unorm 16. This means its
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// fully saturated values are 65504 rather than 65535 (that is just .9995 out of 1.0 though).
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// 4:4:4 formats, 64 bpp
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kY416_YUVFormat, // 16-bit AVYU values all interleaved (1 texture)
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// 4:4:4 formats, 32 bpp
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kAYUV_YUVFormat, // 8-bit YUVA values all interleaved (1 texture)
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kY410_YUVFormat, // AVYU w/ 10bpp for YUV and 2 for A all interleaved (1 texture)
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// 4:2:0 formats, 12 bpp
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kNV12_YUVFormat, // 8-bit Y plane + 2x2 down sampled interleaved U/V planes (2 textures)
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kNV21_YUVFormat, // same as kNV12 but w/ U/V reversed in the interleaved texture (2 textures)
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kI420_YUVFormat, // 8-bit Y plane + separate 2x2 down sampled U and V planes (3 textures)
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kYV12_YUVFormat, // 8-bit Y plane + separate 2x2 down sampled V and U planes (3 textures)
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kLast_YUVFormat = kYV12_YUVFormat
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};
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static bool format_uses_16_bpp(YUVFormat yuvFormat) {
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return kP016_YUVFormat == yuvFormat ||
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kP010_YUVFormat == yuvFormat ||
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kY416_YUVFormat == yuvFormat;
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}
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static bool format_has_builtin_alpha(YUVFormat yuvFormat) {
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return kY416_YUVFormat == yuvFormat ||
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kAYUV_YUVFormat == yuvFormat ||
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kY410_YUVFormat == yuvFormat;
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}
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static bool format_cant_be_represented_with_pixmaps(YUVFormat yuvFormat) {
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return kY416_YUVFormat == yuvFormat; // bc missing SkColorType::kRGBA_16161616
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}
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// Helper to setup the SkYUVAIndex array correctly
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// Skia allows the client to tack an additional alpha plane onto any of the standard opaque
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// formats (via the addExtraAlpha) flag. In this case it is assumed to be a stand-alone single-
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// channel plane.
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static void setup_yuv_indices(YUVFormat yuvFormat, bool addExtraAlpha, SkYUVAIndex yuvaIndices[4]) {
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switch (yuvFormat) {
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case kP016_YUVFormat: // fall through
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case kP010_YUVFormat:
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yuvaIndices[0].fIndex = 0;
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yuvaIndices[0].fChannel = SkColorChannel::kA; // bc 16bit is stored in A16 format
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yuvaIndices[1].fIndex = 1;
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yuvaIndices[1].fChannel = SkColorChannel::kR;
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yuvaIndices[2].fIndex = 1;
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yuvaIndices[2].fChannel = SkColorChannel::kG;
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if (addExtraAlpha) {
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yuvaIndices[3].fIndex = 2;
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yuvaIndices[3].fChannel = SkColorChannel::kA; // bc 16bit is stored in A16 format
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} else {
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yuvaIndices[3].fIndex = -1; // No alpha channel
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}
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break;
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case kY416_YUVFormat:
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SkASSERT(!addExtraAlpha); // this format already has an alpha channel
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yuvaIndices[0].fIndex = 0;
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yuvaIndices[0].fChannel = SkColorChannel::kG;
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yuvaIndices[1].fIndex = 0;
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yuvaIndices[1].fChannel = SkColorChannel::kB;
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yuvaIndices[2].fIndex = 0;
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yuvaIndices[2].fChannel = SkColorChannel::kR;
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yuvaIndices[3].fIndex = 0;
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yuvaIndices[3].fChannel = SkColorChannel::kA;
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break;
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case kAYUV_YUVFormat:
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SkASSERT(!addExtraAlpha); // this format already has an alpha channel
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yuvaIndices[0].fIndex = 0;
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yuvaIndices[0].fChannel = SkColorChannel::kR;
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yuvaIndices[1].fIndex = 0;
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yuvaIndices[1].fChannel = SkColorChannel::kG;
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yuvaIndices[2].fIndex = 0;
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yuvaIndices[2].fChannel = SkColorChannel::kB;
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yuvaIndices[3].fIndex = 0;
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yuvaIndices[3].fChannel = SkColorChannel::kA;
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break;
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case kY410_YUVFormat:
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SkASSERT(!addExtraAlpha); // this format already has an alpha channel
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yuvaIndices[0].fIndex = 0;
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yuvaIndices[0].fChannel = SkColorChannel::kG;
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yuvaIndices[1].fIndex = 0;
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yuvaIndices[1].fChannel = SkColorChannel::kB;
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yuvaIndices[2].fIndex = 0;
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yuvaIndices[2].fChannel = SkColorChannel::kR;
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yuvaIndices[3].fIndex = 0;
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yuvaIndices[3].fChannel = SkColorChannel::kA;
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break;
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case kNV12_YUVFormat:
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yuvaIndices[0].fIndex = 0;
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yuvaIndices[0].fChannel = SkColorChannel::kR;
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yuvaIndices[1].fIndex = 1;
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yuvaIndices[1].fChannel = SkColorChannel::kR;
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yuvaIndices[2].fIndex = 1;
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yuvaIndices[2].fChannel = SkColorChannel::kG;
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if (addExtraAlpha) {
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yuvaIndices[3].fIndex = 2;
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yuvaIndices[3].fChannel = SkColorChannel::kA;
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} else {
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yuvaIndices[3].fIndex = -1; // No alpha channel
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}
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break;
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case kNV21_YUVFormat:
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yuvaIndices[0].fIndex = 0;
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yuvaIndices[0].fChannel = SkColorChannel::kR;
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yuvaIndices[1].fIndex = 1;
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yuvaIndices[1].fChannel = SkColorChannel::kG;
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yuvaIndices[2].fIndex = 1;
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yuvaIndices[2].fChannel = SkColorChannel::kR;
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if (addExtraAlpha) {
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yuvaIndices[3].fIndex = 2;
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yuvaIndices[3].fChannel = SkColorChannel::kA;
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} else {
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yuvaIndices[3].fIndex = -1; // No alpha channel
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}
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break;
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case kI420_YUVFormat:
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yuvaIndices[0].fIndex = 0;
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yuvaIndices[0].fChannel = SkColorChannel::kR;
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yuvaIndices[1].fIndex = 1;
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yuvaIndices[1].fChannel = SkColorChannel::kR;
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yuvaIndices[2].fIndex = 2;
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yuvaIndices[2].fChannel = SkColorChannel::kR;
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if (addExtraAlpha) {
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yuvaIndices[3].fIndex = 3;
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yuvaIndices[3].fChannel = SkColorChannel::kA;
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} else {
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yuvaIndices[3].fIndex = -1; // No alpha channel
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}
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break;
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case kYV12_YUVFormat:
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yuvaIndices[0].fIndex = 0;
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yuvaIndices[0].fChannel = SkColorChannel::kR;
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yuvaIndices[1].fIndex = 2;
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yuvaIndices[1].fChannel = SkColorChannel::kR;
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yuvaIndices[2].fIndex = 1;
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yuvaIndices[2].fChannel = SkColorChannel::kR;
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if (addExtraAlpha) {
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yuvaIndices[3].fIndex = 3;
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yuvaIndices[3].fChannel = SkColorChannel::kA;
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} else {
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yuvaIndices[3].fIndex = -1; // No alpha channel
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}
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break;
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}
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}
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// All the planes we need to construct the various YUV formats
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struct PlaneData {
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SkBitmap fYFull;
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SkBitmap fUFull;
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SkBitmap fVFull;
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SkBitmap fAFull;
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SkBitmap fUQuarter; // 2x2 downsampled U channel
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SkBitmap fVQuarter; // 2x2 downsampled V channel
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SkBitmap fFull;
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SkBitmap fQuarter; // 2x2 downsampled YUVA
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};
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// Add a portion of a circle to 'path'. The points 'o1' and 'o2' are on the border of the circle
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// and have tangents 'v1' and 'v2'.
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static void add_arc(SkPath* path,
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const SkPoint& o1, const SkVector& v1,
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const SkPoint& o2, const SkVector& v2,
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SkTDArray<SkRect>* circles, bool takeLongWayRound) {
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SkVector v3 = { -v1.fY, v1.fX };
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SkVector v4 = { v2.fY, -v2.fX };
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SkScalar t = ((o2.fX - o1.fX) * v4.fY - (o2.fY - o1.fY) * v4.fX) / v3.cross(v4);
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SkPoint center = { o1.fX + t * v3.fX, o1.fY + t * v3.fY };
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SkRect r = { center.fX - t, center.fY - t, center.fX + t, center.fY + t };
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if (circles) {
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circles->push_back(r);
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}
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SkVector startV = o1 - center, endV = o2 - center;
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startV.normalize();
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endV.normalize();
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SkScalar startDeg = SkRadiansToDegrees(SkScalarATan2(startV.fY, startV.fX));
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SkScalar endDeg = SkRadiansToDegrees(SkScalarATan2(endV.fY, endV.fX));
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startDeg += 360.0f;
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startDeg = fmodf(startDeg, 360.0f);
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endDeg += 360.0f;
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endDeg = fmodf(endDeg, 360.0f);
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if (endDeg < startDeg) {
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endDeg += 360.0f;
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}
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SkScalar sweepDeg = SkTAbs(endDeg - startDeg);
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if (!takeLongWayRound) {
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sweepDeg = sweepDeg - 360;
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}
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path->arcTo(r, startDeg, sweepDeg, false);
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}
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static SkPath create_splat(const SkPoint& o, SkScalar innerRadius, SkScalar outerRadius,
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SkScalar ratio, int numLobes, SkTDArray<SkRect>* circles) {
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if (numLobes <= 1) {
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return SkPath();
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}
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SkPath p;
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int numDivisions = 2 * numLobes;
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SkScalar fullLobeDegrees = 360.0f / numLobes;
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SkScalar outDegrees = ratio * fullLobeDegrees / (ratio + 1.0f);
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SkScalar innerDegrees = fullLobeDegrees / (ratio + 1.0f);
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SkMatrix outerStep, innerStep;
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outerStep.setRotate(outDegrees);
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innerStep.setRotate(innerDegrees);
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SkVector curV = SkVector::Make(0.0f, 1.0f);
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if (circles) {
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circles->push_back(SkRect::MakeLTRB(o.fX - innerRadius, o.fY - innerRadius,
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o.fX + innerRadius, o.fY + innerRadius));
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}
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p.moveTo(o.fX + innerRadius * curV.fX, o.fY + innerRadius * curV.fY);
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for (int i = 0; i < numDivisions; ++i) {
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SkVector nextV;
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if (0 == (i % 2)) {
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nextV = outerStep.mapVector(curV.fX, curV.fY);
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SkPoint top = SkPoint::Make(o.fX + outerRadius * curV.fX,
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o.fY + outerRadius * curV.fY);
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SkPoint nextTop = SkPoint::Make(o.fX + outerRadius * nextV.fX,
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o.fY + outerRadius * nextV.fY);
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p.lineTo(top);
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add_arc(&p, top, curV, nextTop, nextV, circles, true);
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} else {
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nextV = innerStep.mapVector(curV.fX, curV.fY);
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SkPoint bot = SkPoint::Make(o.fX + innerRadius * curV.fX,
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o.fY + innerRadius * curV.fY);
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SkPoint nextBot = SkPoint::Make(o.fX + innerRadius * nextV.fX,
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o.fY + innerRadius * nextV.fY);
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p.lineTo(bot);
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add_arc(&p, bot, curV, nextBot, nextV, nullptr, false);
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}
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curV = nextV;
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}
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p.close();
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return p;
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}
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static SkBitmap make_bitmap(SkColorType colorType, const SkPath& path,
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const SkTDArray<SkRect>& circles, bool opaque, bool padWithRed) {
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const SkColor kGreen = ToolUtils::color_to_565(SkColorSetARGB(0xFF, 178, 240, 104));
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const SkColor kBlue = ToolUtils::color_to_565(SkColorSetARGB(0xFF, 173, 167, 252));
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const SkColor kYellow = ToolUtils::color_to_565(SkColorSetARGB(0xFF, 255, 221, 117));
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int widthHeight = kTileWidthHeight + (padWithRed ? 2 * kDomainPadding : 0);
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SkImageInfo ii = SkImageInfo::Make(widthHeight, widthHeight,
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colorType, kPremul_SkAlphaType);
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SkBitmap bm;
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bm.allocPixels(ii);
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std::unique_ptr<SkCanvas> canvas = SkCanvas::MakeRasterDirect(ii,
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bm.getPixels(),
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bm.rowBytes());
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if (padWithRed) {
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canvas->clear(SK_ColorRED);
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canvas->translate(kDomainPadding, kDomainPadding);
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canvas->clipRect(SkRect::MakeWH(kTileWidthHeight, kTileWidthHeight));
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}
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canvas->clear(opaque ? kGreen : SK_ColorTRANSPARENT);
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SkPaint paint;
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paint.setAntiAlias(false); // serialize-8888 doesn't seem to work well w/ partial transparency
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paint.setColor(kBlue);
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canvas->drawPath(path, paint);
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paint.setColor(opaque ? kYellow : SK_ColorTRANSPARENT);
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paint.setBlendMode(SkBlendMode::kSrc);
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for (int i = 0; i < circles.count(); ++i) {
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SkRect r = circles[i];
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r.inset(r.width()/4, r.height()/4);
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canvas->drawOval(r, paint);
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}
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return bm;
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}
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static void convert_rgba_to_yuva_601_shared(SkColor col, uint8_t yuv[4],
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uint8_t off, uint8_t range) {
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static const float Kr = 0.299f;
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static const float Kb = 0.114f;
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static const float Kg = 1.0f - Kr - Kb;
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float r = SkColorGetR(col) / 255.0f;
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float g = SkColorGetG(col) / 255.0f;
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float b = SkColorGetB(col) / 255.0f;
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float Ey = Kr * r + Kg * g + Kb * b;
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float Ecb = (b - Ey) / 1.402f;
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float Ecr = (r - Ey) / 1.772;
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SkASSERT(Ey >= 0.0f && Ey <= 1.0f);
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SkASSERT(Ecb >= -0.5f && Ecb <= 0.5f);
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SkASSERT(Ecr >= -0.5f && Ecr <= 0.5f);
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yuv[0] = SkScalarRoundToInt( range * Ey + off );
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yuv[1] = SkScalarRoundToInt( 224 * Ecb + 128 );
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yuv[2] = SkScalarRoundToInt( 224 * Ecr + 128 );
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yuv[3] = SkColorGetA(col);
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}
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static void convert_rgba_to_yuva_jpeg(SkColor col, uint8_t yuv[4]) {
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// full swing from 0..255
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convert_rgba_to_yuva_601_shared(col, yuv, 0, 255);
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}
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static void convert_rgba_to_yuva_601(SkColor col, uint8_t yuv[4]) {
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// partial swing from 16..235
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convert_rgba_to_yuva_601_shared(col, yuv, 16, 219);
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}
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static void convert_rgba_to_yuva_709(SkColor col, uint8_t yuv[4]) {
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static const float Kr = 0.2126f;
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static const float Kb = 0.0722f;
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static const float Kg = 1.0f - Kr - Kb;
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float r = SkColorGetR(col) / 255.0f;
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float g = SkColorGetG(col) / 255.0f;
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float b = SkColorGetB(col) / 255.0f;
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float Ey = Kr * r + Kg * g + Kb * b;
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float Ecb = (b - Ey) / 1.8556f;
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float Ecr = (r - Ey) / 1.5748;
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SkASSERT(Ey >= 0.0f && Ey <= 1.0f);
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SkASSERT(Ecb >= -0.5f && Ecb <= 0.5f);
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SkASSERT(Ecr >= -0.5f && Ecr <= 0.5f);
|
|
|
|
yuv[0] = SkScalarRoundToInt( 219 * Ey + 16 );
|
|
yuv[1] = SkScalarRoundToInt( 224 * Ecb + 128 );
|
|
yuv[2] = SkScalarRoundToInt( 224 * Ecr + 128 );
|
|
|
|
yuv[3] = SkColorGetA(col);
|
|
}
|
|
|
|
|
|
static SkPMColor convert_yuva_to_rgba_jpeg(uint8_t y, uint8_t u, uint8_t v, uint8_t a) {
|
|
uint8_t r = SkScalarPin(SkScalarRoundToInt( 1.0f * y + 1.402f * v - 0.703749f * 255),
|
|
0, 255);
|
|
uint8_t g = SkScalarPin(SkScalarRoundToInt( 1.0f * y - (0.344136f * u) - (0.714136f * v) + 0.531211f * 255),
|
|
0, 255);
|
|
uint8_t b = SkScalarPin(SkScalarRoundToInt( 1.0f * y + 1.772f * u - 0.889475f * 255),
|
|
0, 255);
|
|
|
|
SkPMColor c = SkPremultiplyARGBInline(a, b, g, r);
|
|
return c;
|
|
}
|
|
|
|
static SkPMColor convert_yuva_to_rgba_601(uint8_t y, uint8_t u, uint8_t v, uint8_t a) {
|
|
uint8_t r = SkScalarPin(SkScalarRoundToInt( 1.164f * y + 1.596f * v - 0.87075f * 255), 0, 255);
|
|
uint8_t g = SkScalarPin(SkScalarRoundToInt( 1.164f * y - (0.391f * u) - (0.813f * v) + 0.52925f * 255), 0, 255);
|
|
uint8_t b = SkScalarPin(SkScalarRoundToInt( 1.164f * y + 2.018f * u - 1.08175f * 255), 0, 255);
|
|
|
|
SkPMColor c = SkPremultiplyARGBInline(a, b, g, r);
|
|
return c;
|
|
}
|
|
|
|
static SkPMColor convert_yuva_to_rgba_709(uint8_t y, uint8_t u, uint8_t v, uint8_t a) {
|
|
uint8_t r = SkScalarPin(SkScalarRoundToInt( 1.164f * y + (1.793f * v) - 0.96925f * 255), 0, 255);
|
|
uint8_t g = SkScalarPin(SkScalarRoundToInt( 1.164f * y - (0.213f * u) - (0.533f * v) + 0.30025f * 255), 0, 255);
|
|
uint8_t b = SkScalarPin(SkScalarRoundToInt( 1.164f * y + (2.112f * u) - 1.12875f * 255), 0, 255);
|
|
|
|
SkPMColor c = SkPremultiplyARGBInline(a, b, g, r);
|
|
return c;
|
|
}
|
|
|
|
static void extract_planes(const SkBitmap& bm, SkYUVColorSpace yuvColorSpace, PlaneData* planes) {
|
|
if (kIdentity_SkYUVColorSpace == yuvColorSpace) {
|
|
// To test the identity color space we use JPEG YUV planes
|
|
yuvColorSpace = kJPEG_SkYUVColorSpace;
|
|
}
|
|
|
|
SkASSERT(!(bm.width() % 2));
|
|
SkASSERT(!(bm.height() % 2));
|
|
planes->fYFull.allocPixels(SkImageInfo::Make(bm.width(), bm.height(), kGray_8_SkColorType,
|
|
kUnpremul_SkAlphaType));
|
|
planes->fUFull.allocPixels(SkImageInfo::Make(bm.width(), bm.height(), kGray_8_SkColorType,
|
|
kUnpremul_SkAlphaType));
|
|
planes->fVFull.allocPixels(SkImageInfo::Make(bm.width(), bm.height(), kGray_8_SkColorType,
|
|
kUnpremul_SkAlphaType));
|
|
planes->fAFull.allocPixels(SkImageInfo::MakeA8(bm.width(), bm.height()));
|
|
planes->fUQuarter.allocPixels(SkImageInfo::Make(bm.width()/2, bm.height()/2,
|
|
kGray_8_SkColorType, kUnpremul_SkAlphaType));
|
|
planes->fVQuarter.allocPixels(SkImageInfo::Make(bm.width()/2, bm.height()/2,
|
|
kGray_8_SkColorType, kUnpremul_SkAlphaType));
|
|
|
|
planes->fFull.allocPixels(SkImageInfo::Make(bm.width(), bm.height(),
|
|
kRGBA_F32_SkColorType, kUnpremul_SkAlphaType));
|
|
planes->fQuarter.allocPixels(SkImageInfo::Make(bm.width()/2, bm.height()/2,
|
|
kRGBA_F32_SkColorType, kUnpremul_SkAlphaType));
|
|
|
|
SkColor4f* dst = (SkColor4f *) planes->fFull.getAddr(0, 0);
|
|
for (int y = 0; y < bm.height(); ++y) {
|
|
for (int x = 0; x < bm.width(); ++x) {
|
|
SkColor col = bm.getColor(x, y);
|
|
|
|
uint8_t yuva[4];
|
|
|
|
if (kJPEG_SkYUVColorSpace == yuvColorSpace) {
|
|
convert_rgba_to_yuva_jpeg(col, yuva);
|
|
} else if (kRec601_SkYUVColorSpace == yuvColorSpace) {
|
|
convert_rgba_to_yuva_601(col, yuva);
|
|
} else {
|
|
SkASSERT(kRec709_SkYUVColorSpace == yuvColorSpace);
|
|
convert_rgba_to_yuva_709(col, yuva);
|
|
}
|
|
|
|
*planes->fYFull.getAddr8(x, y) = yuva[0];
|
|
*planes->fUFull.getAddr8(x, y) = yuva[1];
|
|
*planes->fVFull.getAddr8(x, y) = yuva[2];
|
|
*planes->fAFull.getAddr8(x, y) = yuva[3];
|
|
|
|
// TODO: render in F32 rather than converting here
|
|
dst->fR = yuva[0] / 255.0f;
|
|
dst->fG = yuva[1] / 255.0f;
|
|
dst->fB = yuva[2] / 255.0f;
|
|
dst->fA = yuva[3] / 255.0f;
|
|
++dst;
|
|
}
|
|
}
|
|
|
|
dst = (SkColor4f *) planes->fQuarter.getAddr(0, 0);
|
|
for (int y = 0; y < bm.height()/2; ++y) {
|
|
for (int x = 0; x < bm.width()/2; ++x) {
|
|
uint32_t yAccum = 0, uAccum = 0, vAccum = 0, aAccum = 0;
|
|
|
|
yAccum += *planes->fYFull.getAddr8(2*x, 2*y);
|
|
yAccum += *planes->fYFull.getAddr8(2*x+1, 2*y);
|
|
yAccum += *planes->fYFull.getAddr8(2*x, 2*y+1);
|
|
yAccum += *planes->fYFull.getAddr8(2*x+1, 2*y+1);
|
|
|
|
uAccum += *planes->fUFull.getAddr8(2*x, 2*y);
|
|
uAccum += *planes->fUFull.getAddr8(2*x+1, 2*y);
|
|
uAccum += *planes->fUFull.getAddr8(2*x, 2*y+1);
|
|
uAccum += *planes->fUFull.getAddr8(2*x+1, 2*y+1);
|
|
|
|
*planes->fUQuarter.getAddr8(x, y) = uAccum / 4.0f;
|
|
|
|
vAccum += *planes->fVFull.getAddr8(2*x, 2*y);
|
|
vAccum += *planes->fVFull.getAddr8(2*x+1, 2*y);
|
|
vAccum += *planes->fVFull.getAddr8(2*x, 2*y+1);
|
|
vAccum += *planes->fVFull.getAddr8(2*x+1, 2*y+1);
|
|
|
|
*planes->fVQuarter.getAddr8(x, y) = vAccum / 4.0f;
|
|
|
|
aAccum += *planes->fAFull.getAddr8(2*x, 2*y);
|
|
aAccum += *planes->fAFull.getAddr8(2*x+1, 2*y);
|
|
aAccum += *planes->fAFull.getAddr8(2*x, 2*y+1);
|
|
aAccum += *planes->fAFull.getAddr8(2*x+1, 2*y+1);
|
|
|
|
// TODO: render in F32 rather than converting here
|
|
dst->fR = yAccum / (4.0f * 255.0f);
|
|
dst->fG = uAccum / (4.0f * 255.0f);
|
|
dst->fB = vAccum / (4.0f * 255.0f);
|
|
dst->fA = aAccum / (4.0f * 255.0f);
|
|
++dst;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Create a 2x2 downsampled SkBitmap. It is stored in an RG texture. It can optionally be
|
|
// uv (i.e., NV12) or vu (i.e., NV21).
|
|
static SkBitmap make_quarter_2_channel(const SkBitmap& fullY,
|
|
const SkBitmap& quarterU,
|
|
const SkBitmap& quarterV,
|
|
bool uv) {
|
|
SkBitmap result;
|
|
|
|
result.allocPixels(SkImageInfo::Make(fullY.width()/2,
|
|
fullY.height()/2,
|
|
kRG_88_SkColorType,
|
|
kUnpremul_SkAlphaType));
|
|
|
|
for (int y = 0; y < fullY.height()/2; ++y) {
|
|
for (int x = 0; x < fullY.width()/2; ++x) {
|
|
uint8_t u8 = *quarterU.getAddr8(x, y);
|
|
uint8_t v8 = *quarterV.getAddr8(x, y);
|
|
|
|
if (uv) {
|
|
*result.getAddr16(x, y) = (v8 << 8) | u8;
|
|
} else {
|
|
*result.getAddr16(x, y) = (u8 << 8) | v8;
|
|
}
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
// Extract one channel of 'src' into a single channel 16 bit result. Optionally, set
|
|
// the lower 6 bits to 0 for the 10bpp formats (i.e., P010).
|
|
static SkBitmap make_single_channel_16(const SkBitmap& src, int channel, bool tenBitsPP) {
|
|
SkASSERT(0 <= channel && channel <= 3);
|
|
SkASSERT(src.colorType() == kRGBA_F32_SkColorType);
|
|
|
|
SkBitmap result;
|
|
|
|
result.allocPixels(SkImageInfo::Make(src.width(), src.height(),
|
|
kAlpha_16_SkColorType,
|
|
kUnpremul_SkAlphaType));
|
|
|
|
const float* pixels = (const float*) src.getAddr(0, 0);
|
|
for (int y = 0; y < src.height(); ++y) {
|
|
for (int x = 0; x < src.width(); ++x) {
|
|
uint32_t val16 = SkScalarRoundToInt(pixels[channel] * 65535.0f);
|
|
|
|
if (tenBitsPP) {
|
|
val16 &= 0xFFC0;
|
|
}
|
|
|
|
*result.getAddr16(x, y) = val16;
|
|
pixels += 4;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
// Extract the green and blue channels from src into an 16bit per channel
|
|
// RG texture.
|
|
static SkBitmap make_two_channel_16(const SkBitmap& src, bool tenBitsPP) {
|
|
SkASSERT(src.colorType() == kRGBA_F32_SkColorType);
|
|
|
|
SkBitmap result;
|
|
|
|
result.allocPixels(SkImageInfo::Make(src.width(), src.height(),
|
|
kRG_1616_SkColorType,
|
|
kUnpremul_SkAlphaType));
|
|
|
|
float* pixels = (float*) src.getAddr(0, 0);
|
|
for (int y = 0; y < src.height(); ++y) {
|
|
for (int x = 0; x < src.width(); ++x) {
|
|
uint32_t u16 = SkScalarRoundToInt(pixels[1] * 65535.0f);
|
|
uint32_t v16 = SkScalarRoundToInt(pixels[2] * 65535.0f);
|
|
|
|
if (tenBitsPP) {
|
|
u16 &= 0xFFC0;
|
|
v16 &= 0xFFC0;
|
|
}
|
|
|
|
*result.getAddr32(x, y) = (v16 << 16) | u16;
|
|
pixels += 4;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
// Recombine the separate planes into some YUV format
|
|
static void create_YUV(const PlaneData& planes, YUVFormat yuvFormat,
|
|
SkBitmap resultBMs[], SkYUVAIndex yuvaIndices[4], bool opaque) {
|
|
int nextLayer = 0;
|
|
|
|
switch (yuvFormat) {
|
|
case kY416_YUVFormat: {
|
|
// Although this is 16 bpp, store the data in an 8 bpp SkBitmap
|
|
SkBitmap yuvaFull;
|
|
|
|
yuvaFull.allocPixels(SkImageInfo::Make(planes.fYFull.width(), planes.fYFull.height(),
|
|
kRGBA_8888_SkColorType, kUnpremul_SkAlphaType));
|
|
|
|
for (int y = 0; y < planes.fYFull.height(); ++y) {
|
|
for (int x = 0; x < planes.fYFull.width(); ++x) {
|
|
|
|
uint8_t Y = *planes.fYFull.getAddr8(x, y);
|
|
uint8_t U = *planes.fUFull.getAddr8(x, y);
|
|
uint8_t V = *planes.fVFull.getAddr8(x, y);
|
|
uint8_t A = *planes.fAFull.getAddr8(x, y);
|
|
|
|
// NOT premul!
|
|
// U and V swapped to match RGBA layout
|
|
SkColor c = SkColorSetARGB(A, U, Y, V);
|
|
*yuvaFull.getAddr32(x, y) = c;
|
|
}
|
|
}
|
|
|
|
resultBMs[nextLayer++] = yuvaFull;
|
|
|
|
setup_yuv_indices(yuvFormat, false, yuvaIndices);
|
|
break;
|
|
}
|
|
case kAYUV_YUVFormat: {
|
|
SkBitmap yuvaFull;
|
|
|
|
yuvaFull.allocPixels(SkImageInfo::Make(planes.fYFull.width(), planes.fYFull.height(),
|
|
kRGBA_8888_SkColorType, kUnpremul_SkAlphaType));
|
|
|
|
for (int y = 0; y < planes.fYFull.height(); ++y) {
|
|
for (int x = 0; x < planes.fYFull.width(); ++x) {
|
|
|
|
uint8_t Y = *planes.fYFull.getAddr8(x, y);
|
|
uint8_t U = *planes.fUFull.getAddr8(x, y);
|
|
uint8_t V = *planes.fVFull.getAddr8(x, y);
|
|
uint8_t A = *planes.fAFull.getAddr8(x, y);
|
|
|
|
// NOT premul!
|
|
// V and Y swapped to match RGBA layout
|
|
SkColor c = SkColorSetARGB(A, V, U, Y);
|
|
*yuvaFull.getAddr32(x, y) = c;
|
|
}
|
|
}
|
|
|
|
resultBMs[nextLayer++] = yuvaFull;
|
|
|
|
setup_yuv_indices(yuvFormat, false, yuvaIndices);
|
|
break;
|
|
}
|
|
case kY410_YUVFormat: {
|
|
SkBitmap yuvaFull;
|
|
uint32_t Y, U, V;
|
|
uint8_t A;
|
|
|
|
yuvaFull.allocPixels(SkImageInfo::Make(planes.fYFull.width(), planes.fYFull.height(),
|
|
kRGBA_1010102_SkColorType,
|
|
kUnpremul_SkAlphaType));
|
|
|
|
for (int y = 0; y < planes.fYFull.height(); ++y) {
|
|
for (int x = 0; x < planes.fYFull.width(); ++x) {
|
|
|
|
Y = SkScalarRoundToInt((*planes.fYFull.getAddr8(x, y) / 255.0f) * 1023.0f);
|
|
U = SkScalarRoundToInt((*planes.fUFull.getAddr8(x, y) / 255.0f) * 1023.0f);
|
|
V = SkScalarRoundToInt((*planes.fVFull.getAddr8(x, y) / 255.0f) * 1023.0f);
|
|
A = SkScalarRoundToInt((*planes.fAFull.getAddr8(x, y) / 255.0f) * 3.0f);
|
|
|
|
// NOT premul!
|
|
// AVYU but w/ V and U swapped to match RGBA layout
|
|
*yuvaFull.getAddr32(x, y) = (A << 30) | (U << 20) | (Y << 10) | (V << 0);
|
|
}
|
|
}
|
|
|
|
resultBMs[nextLayer++] = yuvaFull;
|
|
|
|
setup_yuv_indices(yuvFormat, false, yuvaIndices);
|
|
break;
|
|
}
|
|
case kP016_YUVFormat: // fall through
|
|
case kP010_YUVFormat: {
|
|
resultBMs[nextLayer++] = make_single_channel_16(planes.fFull, 0,
|
|
yuvFormat == kP010_YUVFormat);
|
|
resultBMs[nextLayer++] = make_two_channel_16(planes.fQuarter,
|
|
yuvFormat == kP010_YUVFormat);
|
|
|
|
if (!opaque) {
|
|
resultBMs[nextLayer] = make_single_channel_16(planes.fFull, 3,
|
|
yuvFormat == kP010_YUVFormat);
|
|
}
|
|
setup_yuv_indices(yuvFormat, !opaque, yuvaIndices);
|
|
return;
|
|
}
|
|
case kNV12_YUVFormat: {
|
|
SkBitmap uvQuarter = make_quarter_2_channel(planes.fYFull,
|
|
planes.fUQuarter,
|
|
planes.fVQuarter, true);
|
|
resultBMs[nextLayer++] = planes.fYFull;
|
|
resultBMs[nextLayer++] = uvQuarter;
|
|
|
|
setup_yuv_indices(yuvFormat, !opaque, yuvaIndices);
|
|
break;
|
|
}
|
|
case kNV21_YUVFormat: {
|
|
SkBitmap vuQuarter = make_quarter_2_channel(planes.fYFull,
|
|
planes.fUQuarter,
|
|
planes.fVQuarter, false);
|
|
resultBMs[nextLayer++] = planes.fYFull;
|
|
resultBMs[nextLayer++] = vuQuarter;
|
|
|
|
setup_yuv_indices(yuvFormat, !opaque, yuvaIndices);
|
|
break;
|
|
}
|
|
case kI420_YUVFormat:
|
|
resultBMs[nextLayer++] = planes.fYFull;
|
|
resultBMs[nextLayer++] = planes.fUQuarter;
|
|
resultBMs[nextLayer++] = planes.fVQuarter;
|
|
|
|
setup_yuv_indices(yuvFormat, !opaque, yuvaIndices);
|
|
break;
|
|
case kYV12_YUVFormat:
|
|
resultBMs[nextLayer++] = planes.fYFull;
|
|
resultBMs[nextLayer++] = planes.fVQuarter;
|
|
resultBMs[nextLayer++] = planes.fUQuarter;
|
|
|
|
setup_yuv_indices(yuvFormat, !opaque, yuvaIndices);
|
|
break;
|
|
}
|
|
|
|
if (!format_has_builtin_alpha(yuvFormat) && !opaque) {
|
|
resultBMs[nextLayer] = planes.fAFull;
|
|
}
|
|
}
|
|
|
|
static uint8_t look_up(float x1, float y1, const SkBitmap& bm, SkColorChannel channel) {
|
|
uint8_t result;
|
|
|
|
SkASSERT(x1 > 0 && x1 < 1.0f);
|
|
SkASSERT(y1 > 0 && y1 < 1.0f);
|
|
int x = SkScalarFloorToInt(x1 * bm.width());
|
|
int y = SkScalarFloorToInt(y1 * bm.height());
|
|
|
|
if (kAlpha_8_SkColorType == bm.colorType() || kGray_8_SkColorType == bm.colorType()) {
|
|
SkASSERT(SkColorChannel::kA == channel || SkColorChannel::kR == channel);
|
|
result = *bm.getAddr8(x, y);
|
|
} else if (kAlpha_16_SkColorType == bm.colorType()) {
|
|
SkASSERT(SkColorChannel::kA == channel);
|
|
result = (*bm.getAddr16(x, y) >> 8);
|
|
} else if (kRG_88_SkColorType == bm.colorType() || kRG_1616_SkColorType == bm.colorType()) {
|
|
SkASSERT(SkColorChannel::kR == channel || SkColorChannel::kG == channel);
|
|
SkColor c = bm.getColor(x, y);
|
|
|
|
switch (channel) {
|
|
case SkColorChannel::kR:
|
|
result = SkColorGetR(c);
|
|
break;
|
|
case SkColorChannel::kG:
|
|
result = SkColorGetG(c);
|
|
break;
|
|
case SkColorChannel::kB:
|
|
result = 0;
|
|
break;
|
|
case SkColorChannel::kA:
|
|
result = 255;
|
|
break;
|
|
}
|
|
} else if (kRGBA_8888_SkColorType == bm.colorType()) {
|
|
SkColor c = *bm.getAddr32(x, y);
|
|
|
|
switch (channel) {
|
|
case SkColorChannel::kR:
|
|
result = SkColorGetB(c);
|
|
break;
|
|
case SkColorChannel::kG:
|
|
result = SkColorGetG(c);
|
|
break;
|
|
case SkColorChannel::kB:
|
|
result = SkColorGetR(c);
|
|
break;
|
|
case SkColorChannel::kA:
|
|
result = SkColorGetA(c);
|
|
break;
|
|
}
|
|
} else {
|
|
SkASSERT(kRGBA_1010102_SkColorType == bm.colorType());
|
|
|
|
SkColor c = *bm.getAddr32(x, y);
|
|
|
|
switch (channel) {
|
|
case SkColorChannel::kR:
|
|
result = SkScalarRoundToInt(((c >> 0) & 0x3ff) * (255.0f/1023.0f));
|
|
break;
|
|
case SkColorChannel::kG:
|
|
result = SkScalarRoundToInt(((c >> 10) & 0x3ff) * (255.0f/1023.0f));
|
|
break;
|
|
case SkColorChannel::kB:
|
|
result = SkScalarRoundToInt(((c >> 20) & 0x3ff) * (255.0f/1023.0f));
|
|
break;
|
|
case SkColorChannel::kA:
|
|
result = SkScalarRoundToInt(((c >> 30) & 0x3) * (255.0f/3.0f));
|
|
break;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
class YUVGenerator : public SkImageGenerator {
|
|
public:
|
|
YUVGenerator(const SkImageInfo& ii,
|
|
SkYUVColorSpace yuvColorSpace,
|
|
SkYUVAIndex yuvaIndices[SkYUVAIndex::kIndexCount],
|
|
SkBitmap bitmaps[SkYUVASizeInfo::kMaxCount])
|
|
: SkImageGenerator(ii)
|
|
, fYUVColorSpace(yuvColorSpace)
|
|
, fAllA8(true) {
|
|
memcpy(fYUVAIndices, yuvaIndices, sizeof(fYUVAIndices));
|
|
|
|
SkAssertResult(SkYUVAIndex::AreValidIndices(fYUVAIndices, &fNumBitmaps));
|
|
SkASSERT(fNumBitmaps > 0 && fNumBitmaps <= SkYUVASizeInfo::kMaxCount);
|
|
|
|
for (int i = 0; i < fNumBitmaps; ++i) {
|
|
fYUVBitmaps[i] = bitmaps[i];
|
|
if (kAlpha_8_SkColorType != fYUVBitmaps[i].colorType()) {
|
|
fAllA8 = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
protected:
|
|
bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes,
|
|
const Options&) override {
|
|
|
|
if (kUnknown_SkColorType == fFlattened.colorType()) {
|
|
fFlattened.allocPixels(info);
|
|
SkASSERT(kPremul_SkAlphaType == info.alphaType());
|
|
|
|
for (int y = 0; y < info.height(); ++y) {
|
|
for (int x = 0; x < info.width(); ++x) {
|
|
|
|
float x1 = (x + 0.5f) / info.width();
|
|
float y1 = (y + 0.5f) / info.height();
|
|
|
|
uint8_t Y = look_up(x1, y1,
|
|
fYUVBitmaps[fYUVAIndices[0].fIndex],
|
|
fYUVAIndices[0].fChannel);
|
|
|
|
uint8_t U = look_up(x1, y1,
|
|
fYUVBitmaps[fYUVAIndices[1].fIndex],
|
|
fYUVAIndices[1].fChannel);
|
|
|
|
|
|
uint8_t V = look_up(x1, y1,
|
|
fYUVBitmaps[fYUVAIndices[2].fIndex],
|
|
fYUVAIndices[2].fChannel);
|
|
|
|
uint8_t A = 255;
|
|
if (fYUVAIndices[3].fIndex >= 0) {
|
|
A = look_up(x1, y1,
|
|
fYUVBitmaps[fYUVAIndices[3].fIndex],
|
|
fYUVAIndices[3].fChannel);
|
|
}
|
|
|
|
// Making premul here.
|
|
switch (fYUVColorSpace) {
|
|
case kJPEG_SkYUVColorSpace:
|
|
*fFlattened.getAddr32(x, y) = convert_yuva_to_rgba_jpeg(Y, U, V, A);
|
|
break;
|
|
case kRec601_SkYUVColorSpace:
|
|
*fFlattened.getAddr32(x, y) = convert_yuva_to_rgba_601(Y, U, V, A);
|
|
break;
|
|
case kRec709_SkYUVColorSpace:
|
|
*fFlattened.getAddr32(x, y) = convert_yuva_to_rgba_709(Y, U, V, A);
|
|
break;
|
|
case kIdentity_SkYUVColorSpace:
|
|
*fFlattened.getAddr32(x, y) = SkPremultiplyARGBInline(A, V, U, Y);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return fFlattened.readPixels(info, pixels, rowBytes, 0, 0);
|
|
}
|
|
|
|
bool onQueryYUVA8(SkYUVASizeInfo* size,
|
|
SkYUVAIndex yuvaIndices[SkYUVAIndex::kIndexCount],
|
|
SkYUVColorSpace* yuvColorSpace) const override {
|
|
|
|
// The onQueryYUVA8/onGetYUVA8Planes can only handle A8 planes
|
|
if (!fAllA8) {
|
|
return false;
|
|
}
|
|
|
|
memcpy(yuvaIndices, fYUVAIndices, sizeof(fYUVAIndices));
|
|
*yuvColorSpace = fYUVColorSpace;
|
|
|
|
int i = 0;
|
|
for ( ; i < fNumBitmaps; ++i) {
|
|
size->fSizes[i].fWidth = fYUVBitmaps[i].width();
|
|
size->fSizes[i].fHeight = fYUVBitmaps[i].height();
|
|
size->fWidthBytes[i] = fYUVBitmaps[i].rowBytes();
|
|
}
|
|
for ( ; i < SkYUVASizeInfo::kMaxCount; ++i) {
|
|
size->fSizes[i].fWidth = 0;
|
|
size->fSizes[i].fHeight = 0;
|
|
size->fWidthBytes[i] = 0;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool onGetYUVA8Planes(const SkYUVASizeInfo&, const SkYUVAIndex[SkYUVAIndex::kIndexCount],
|
|
void* planes[SkYUVASizeInfo::kMaxCount]) override {
|
|
SkASSERT(fAllA8);
|
|
for (int i = 0; i < fNumBitmaps; ++i) {
|
|
planes[i] = fYUVBitmaps[i].getPixels();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
private:
|
|
SkYUVColorSpace fYUVColorSpace;
|
|
SkYUVAIndex fYUVAIndices[SkYUVAIndex::kIndexCount];
|
|
int fNumBitmaps;
|
|
SkBitmap fYUVBitmaps[SkYUVASizeInfo::kMaxCount];
|
|
SkBitmap fFlattened;
|
|
bool fAllA8; // are all the SkBitmaps in "fYUVBitmaps" A8?
|
|
|
|
};
|
|
|
|
static sk_sp<SkImage> make_yuv_gen_image(const SkImageInfo& ii,
|
|
SkYUVColorSpace yuvColorSpace,
|
|
SkYUVAIndex yuvaIndices[SkYUVAIndex::kIndexCount],
|
|
SkBitmap bitmaps[]) {
|
|
std::unique_ptr<SkImageGenerator> gen(new YUVGenerator(ii, yuvColorSpace,
|
|
yuvaIndices, bitmaps));
|
|
|
|
return SkImage::MakeFromGenerator(std::move(gen));
|
|
}
|
|
|
|
static void draw_col_label(SkCanvas* canvas, int x, int yuvColorSpace, bool opaque) {
|
|
static const char* kYUVColorSpaceNames[] = { "JPEG", "601", "709", "Identity" };
|
|
GR_STATIC_ASSERT(SK_ARRAY_COUNT(kYUVColorSpaceNames) == kLastEnum_SkYUVColorSpace+1);
|
|
|
|
SkPaint paint;
|
|
SkFont font(ToolUtils::create_portable_typeface(nullptr, SkFontStyle::Bold()), 16);
|
|
font.setEdging(SkFont::Edging::kAlias);
|
|
|
|
SkRect textRect;
|
|
SkString colLabel;
|
|
|
|
colLabel.printf("%s", kYUVColorSpaceNames[yuvColorSpace]);
|
|
font.measureText(colLabel.c_str(), colLabel.size(), SkTextEncoding::kUTF8, &textRect);
|
|
int y = textRect.height();
|
|
|
|
SkTextUtils::DrawString(canvas, colLabel.c_str(), x, y, font, paint, SkTextUtils::kCenter_Align);
|
|
|
|
colLabel.printf("%s", opaque ? "Opaque" : "Transparent");
|
|
|
|
font.measureText(colLabel.c_str(), colLabel.size(), SkTextEncoding::kUTF8, &textRect);
|
|
y += textRect.height();
|
|
|
|
SkTextUtils::DrawString(canvas, colLabel.c_str(), x, y, font, paint, SkTextUtils::kCenter_Align);
|
|
}
|
|
|
|
static void draw_row_label(SkCanvas* canvas, int y, int yuvFormat) {
|
|
static const char* kYUVFormatNames[] = {
|
|
"P016", "P010", "Y416", "AYUV", "Y410", "NV12", "NV21", "I420", "YV12"
|
|
};
|
|
GR_STATIC_ASSERT(SK_ARRAY_COUNT(kYUVFormatNames) == kLast_YUVFormat+1);
|
|
|
|
SkPaint paint;
|
|
SkFont font(ToolUtils::create_portable_typeface(nullptr, SkFontStyle::Bold()), 16);
|
|
font.setEdging(SkFont::Edging::kAlias);
|
|
|
|
SkRect textRect;
|
|
SkString rowLabel;
|
|
|
|
rowLabel.printf("%s", kYUVFormatNames[yuvFormat]);
|
|
font.measureText(rowLabel.c_str(), rowLabel.size(), SkTextEncoding::kUTF8, &textRect);
|
|
y += kTileWidthHeight/2 + textRect.height()/2;
|
|
|
|
canvas->drawString(rowLabel, 0, y, font, paint);
|
|
}
|
|
|
|
static void make_RGBA_16(const GrCaps* caps,
|
|
const SkBitmap& bm,
|
|
YUVFormat yuvFormat,
|
|
SkAutoTMalloc<uint8_t>* pixels,
|
|
GrBackendFormat* format,
|
|
size_t* rowBytes) {
|
|
SkASSERT(kY416_YUVFormat == yuvFormat);
|
|
SkASSERT(kRGBA_8888_SkColorType == bm.colorType());
|
|
|
|
uint16_t y16, u16, v16, a16;
|
|
*rowBytes = 4 * sizeof(uint16_t) * bm.width();
|
|
pixels->reset(*rowBytes * bm.height());
|
|
uint16_t* currPixel = (uint16_t*) pixels->get();
|
|
for (int y = 0; y < bm.height(); ++y) {
|
|
for (int x = 0; x < bm.width(); ++x) {
|
|
SkColor color = bm.getColor(x, y);
|
|
|
|
y16 = SkScalarRoundToInt((SkColorGetR(color) / 255.0f) * 65535.0f);
|
|
u16 = SkScalarRoundToInt((SkColorGetG(color) / 255.0f) * 65535.0f);
|
|
v16 = SkScalarRoundToInt((SkColorGetB(color) / 255.0f) * 65535.0f);
|
|
a16 = SkScalarRoundToInt((SkColorGetA(color) / 255.0f) * 65535.0f);
|
|
|
|
currPixel[0] = y16;
|
|
currPixel[1] = u16;
|
|
currPixel[2] = v16;
|
|
currPixel[3] = a16;
|
|
currPixel += 4;
|
|
}
|
|
}
|
|
|
|
*format = caps->getDefaultBackendFormat(GrColorType::kRGBA_16161616, GrRenderable::kNo);
|
|
return;
|
|
}
|
|
|
|
static GrBackendTexture create_yuva_texture(GrContext* context, const SkBitmap& bm,
|
|
SkYUVAIndex yuvaIndices[4], int texIndex,
|
|
YUVFormat yuvFormat) {
|
|
SkASSERT(texIndex >= 0 && texIndex <= 3);
|
|
int channelCount = 0;
|
|
for (int i = 0; i < SkYUVAIndex::kIndexCount; ++i) {
|
|
if (yuvaIndices[i].fIndex == texIndex) {
|
|
++channelCount;
|
|
}
|
|
}
|
|
|
|
if (format_uses_16_bpp(yuvFormat) || 2 == channelCount) {
|
|
if (2 == channelCount) {
|
|
if (format_uses_16_bpp(yuvFormat)) {
|
|
SkASSERT(kRG_1616_SkColorType == bm.colorType());
|
|
|
|
return context->priv().createBackendTexture(&bm.pixmap(), 1,
|
|
GrRenderable::kNo, GrProtected::kNo);
|
|
} else {
|
|
SkASSERT(kRG_88_SkColorType == bm.colorType());
|
|
|
|
return context->priv().createBackendTexture(&bm.pixmap(), 1,
|
|
GrRenderable::kNo, GrProtected::kNo);
|
|
}
|
|
} else {
|
|
if (kRGBA_8888_SkColorType == bm.colorType()) {
|
|
// Due to the limitations of SkPixmap these cases need to be handled separately
|
|
const GrCaps* caps = context->priv().caps();
|
|
GrGpu* gpu = context->priv().getGpu();
|
|
|
|
SkAutoTMalloc<uint8_t> pixels;
|
|
GrBackendFormat format;
|
|
size_t rowBytes;
|
|
|
|
make_RGBA_16(caps, bm, yuvFormat, &pixels, &format, &rowBytes);
|
|
|
|
// TODO: SkColorType needs to be expanded to allow RGBA_16 to be done
|
|
// via GrContext::createBackendTexture
|
|
return gpu->createBackendTexture(bm.width(), bm.height(), format,
|
|
GrMipMapped::kNo, GrRenderable::kNo,
|
|
pixels, rowBytes, nullptr, GrProtected::kNo);
|
|
} else {
|
|
SkASSERT(kAlpha_16_SkColorType == bm.colorType());
|
|
|
|
return context->priv().createBackendTexture(&bm.pixmap(), 1,
|
|
GrRenderable::kNo, GrProtected::kNo);
|
|
}
|
|
}
|
|
}
|
|
|
|
return context->priv().createBackendTexture(&bm.pixmap(), 1,
|
|
GrRenderable::kNo, GrProtected::kNo);
|
|
}
|
|
|
|
static sk_sp<SkColorFilter> yuv_to_rgb_colorfilter() {
|
|
static const float kJPEGConversionMatrix[20] = {
|
|
1.0f, 0.0f, 1.402f, 0.0f, -180.0f/255,
|
|
1.0f, -0.344136f, -0.714136f, 0.0f, 136.0f/255,
|
|
1.0f, 1.772f, 0.0f, 0.0f, -227.6f/255,
|
|
0.0f, 0.0f, 0.0f, 1.0f, 0.0f
|
|
};
|
|
|
|
return SkColorFilters::Matrix(kJPEGConversionMatrix);
|
|
}
|
|
|
|
namespace skiagm {
|
|
|
|
// This GM creates an opaque and transparent bitmap, extracts the planes and then recombines
|
|
// them into various YUV formats. It then renders the results in the grid:
|
|
//
|
|
// JPEG 601 709 Identity
|
|
// Transparent Opaque Transparent Opaque Transparent Opaque Transparent Opaque
|
|
// originals
|
|
// P016
|
|
// P010
|
|
// Y416
|
|
// AYUV
|
|
// Y410
|
|
// NV12
|
|
// NV21
|
|
// I420
|
|
// YV12
|
|
class WackyYUVFormatsGM : public GM {
|
|
public:
|
|
WackyYUVFormatsGM(bool useTargetColorSpace, bool useDomain)
|
|
: fUseTargetColorSpace(useTargetColorSpace)
|
|
, fUseDomain(useDomain) {
|
|
this->setBGColor(0xFFCCCCCC);
|
|
}
|
|
|
|
protected:
|
|
|
|
SkString onShortName() override {
|
|
SkString name("wacky_yuv_formats");
|
|
if (fUseTargetColorSpace) {
|
|
name += "_cs";
|
|
}
|
|
if (fUseDomain) {
|
|
name += "_domain";
|
|
}
|
|
|
|
return name;
|
|
}
|
|
|
|
SkISize onISize() override {
|
|
int numCols = 2 * (kLastEnum_SkYUVColorSpace + 1); // opacity x color-space
|
|
int numRows = 1 + (kLast_YUVFormat + 1); // origin + # yuv formats
|
|
int wh = SkScalarCeilToInt(kTileWidthHeight * (fUseDomain ? 1.5f : 1.f));
|
|
return SkISize::Make(kLabelWidth + numCols * (wh + kPad),
|
|
kLabelHeight + numRows * (wh + kPad));
|
|
}
|
|
|
|
void onOnceBeforeDraw() override {
|
|
SkPoint origin = { kTileWidthHeight/2.0f, kTileWidthHeight/2.0f };
|
|
float outerRadius = kTileWidthHeight/2.0f - 20.0f;
|
|
float innerRadius = 20.0f;
|
|
|
|
{
|
|
// transparent
|
|
SkTDArray<SkRect> circles;
|
|
SkPath path = create_splat(origin, innerRadius, outerRadius, 1.0f, 5, &circles);
|
|
fOriginalBMs[0] = make_bitmap(kRGBA_8888_SkColorType, path, circles, false, fUseDomain);
|
|
}
|
|
|
|
{
|
|
// opaque
|
|
SkTDArray<SkRect> circles;
|
|
SkPath path = create_splat(origin, innerRadius, outerRadius, 1.0f, 7, &circles);
|
|
fOriginalBMs[1] = make_bitmap(kRGBA_8888_SkColorType, path, circles, true, fUseDomain);
|
|
}
|
|
|
|
if (fUseTargetColorSpace) {
|
|
fTargetColorSpace = SkColorSpace::MakeSRGB()->makeColorSpin();
|
|
}
|
|
}
|
|
|
|
void createImages(GrContext* context) {
|
|
int counter = 0;
|
|
for (bool opaque : { false, true }) {
|
|
for (int cs = kJPEG_SkYUVColorSpace; cs <= kLastEnum_SkYUVColorSpace; ++cs) {
|
|
PlaneData planes;
|
|
extract_planes(fOriginalBMs[opaque], (SkYUVColorSpace) cs, &planes);
|
|
|
|
for (int format = kP016_YUVFormat; format <= kLast_YUVFormat; ++format) {
|
|
SkBitmap resultBMs[4];
|
|
SkYUVAIndex yuvaIndices[4];
|
|
|
|
create_YUV(planes, (YUVFormat) format, resultBMs, yuvaIndices, opaque);
|
|
|
|
int numTextures;
|
|
if (!SkYUVAIndex::AreValidIndices(yuvaIndices, &numTextures)) {
|
|
continue;
|
|
}
|
|
|
|
if (context) {
|
|
if (context->abandoned()) {
|
|
return;
|
|
}
|
|
|
|
GrBackendTexture yuvaTextures[4];
|
|
SkPixmap yuvaPixmaps[4];
|
|
|
|
for (int i = 0; i < numTextures; ++i) {
|
|
yuvaTextures[i] = create_yuva_texture(context, resultBMs[i],
|
|
yuvaIndices, i,
|
|
(YUVFormat) format);
|
|
if (yuvaTextures[i].isValid()) {
|
|
fBackendTextures.push_back(yuvaTextures[i]);
|
|
}
|
|
yuvaPixmaps[i] = resultBMs[i].pixmap();
|
|
}
|
|
|
|
int counterMod = counter % 3;
|
|
if (format_cant_be_represented_with_pixmaps((YUVFormat) format) &&
|
|
counterMod == 2) {
|
|
// These formats don't work as pixmaps
|
|
counterMod = 1;
|
|
} else if (fUseDomain && counterMod == 0) {
|
|
// Copies flatten to RGB when they copy the YUVA data, which doesn't
|
|
// know about the intended domain and the domain padding bleeds in
|
|
counterMod = 1;
|
|
}
|
|
switch (counterMod) {
|
|
case 0:
|
|
fImages[opaque][cs][format] = SkImage::MakeFromYUVATexturesCopy(
|
|
context,
|
|
(SkYUVColorSpace)cs,
|
|
yuvaTextures,
|
|
yuvaIndices,
|
|
{ fOriginalBMs[opaque].width(), fOriginalBMs[opaque].height() },
|
|
kTopLeft_GrSurfaceOrigin);
|
|
break;
|
|
case 1:
|
|
fImages[opaque][cs][format] = SkImage::MakeFromYUVATextures(
|
|
context,
|
|
(SkYUVColorSpace)cs,
|
|
yuvaTextures,
|
|
yuvaIndices,
|
|
{ fOriginalBMs[opaque].width(), fOriginalBMs[opaque].height() },
|
|
kTopLeft_GrSurfaceOrigin);
|
|
break;
|
|
case 2:
|
|
default:
|
|
fImages[opaque][cs][format] = SkImage::MakeFromYUVAPixmaps(
|
|
context,
|
|
(SkYUVColorSpace)cs,
|
|
yuvaPixmaps,
|
|
yuvaIndices,
|
|
{ fOriginalBMs[opaque].width(), fOriginalBMs[opaque].height() },
|
|
kTopLeft_GrSurfaceOrigin, true);
|
|
break;
|
|
}
|
|
++counter;
|
|
} else {
|
|
fImages[opaque][cs][format] = make_yuv_gen_image(
|
|
fOriginalBMs[opaque].info(),
|
|
(SkYUVColorSpace) cs,
|
|
yuvaIndices,
|
|
resultBMs);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void onDraw(SkCanvas* canvas) override {
|
|
this->createImages(canvas->getGrContext());
|
|
|
|
SkRect srcRect = SkRect::MakeWH(fOriginalBMs[0].width(), fOriginalBMs[0].height());
|
|
SkRect dstRect = SkRect::MakeXYWH(kLabelWidth, 0.f, srcRect.width(), srcRect.height());
|
|
|
|
SkCanvas::SrcRectConstraint constraint = SkCanvas::kFast_SrcRectConstraint;
|
|
if (fUseDomain) {
|
|
srcRect.inset(kDomainPadding, kDomainPadding);
|
|
// Draw a larger rectangle to ensure bilerp filtering would normally read outside the
|
|
// srcRect and hit the red pixels, if strict constraint weren't used.
|
|
dstRect.fRight = kLabelWidth + 1.5f * srcRect.width();
|
|
dstRect.fBottom = 1.5f * srcRect.height();
|
|
constraint = SkCanvas::kStrict_SrcRectConstraint;
|
|
}
|
|
|
|
for (int cs = kJPEG_SkYUVColorSpace; cs <= kLastEnum_SkYUVColorSpace; ++cs) {
|
|
SkPaint paint;
|
|
paint.setFilterQuality(kLow_SkFilterQuality);
|
|
if (kIdentity_SkYUVColorSpace == cs) {
|
|
// The identity color space needs post processing to appear correctly
|
|
paint.setColorFilter(yuv_to_rgb_colorfilter());
|
|
}
|
|
|
|
for (int opaque : { 0, 1 }) {
|
|
dstRect.offsetTo(dstRect.fLeft, kLabelHeight);
|
|
|
|
draw_col_label(canvas, dstRect.fLeft + dstRect.height() / 2, cs, opaque);
|
|
|
|
canvas->drawBitmapRect(fOriginalBMs[opaque], srcRect, dstRect, nullptr, constraint);
|
|
dstRect.offset(0.f, dstRect.height() + kPad);
|
|
|
|
for (int format = kP016_YUVFormat; format <= kLast_YUVFormat; ++format) {
|
|
draw_row_label(canvas, dstRect.fTop, format);
|
|
if (fUseTargetColorSpace && fImages[opaque][cs][format]) {
|
|
// Making a CS-specific version of a kIdentity_SkYUVColorSpace YUV image
|
|
// doesn't make a whole lot of sense. The colorSpace conversion will
|
|
// operate on the YUV components rather than the RGB components.
|
|
sk_sp<SkImage> csImage =
|
|
fImages[opaque][cs][format]->makeColorSpace(fTargetColorSpace);
|
|
canvas->drawImageRect(csImage, srcRect, dstRect, &paint, constraint);
|
|
} else {
|
|
canvas->drawImageRect(fImages[opaque][cs][format], srcRect, dstRect, &paint,
|
|
constraint);
|
|
}
|
|
dstRect.offset(0.f, dstRect.height() + kPad);
|
|
}
|
|
|
|
dstRect.offset(dstRect.width() + kPad, 0.f);
|
|
}
|
|
}
|
|
if (auto context = canvas->getGrContext()) {
|
|
if (!context->abandoned()) {
|
|
context->flush();
|
|
GrGpu* gpu = context->priv().getGpu();
|
|
SkASSERT(gpu);
|
|
gpu->testingOnly_flushGpuAndSync();
|
|
for (const auto& tex : fBackendTextures) {
|
|
context->deleteBackendTexture(tex);
|
|
}
|
|
fBackendTextures.reset();
|
|
}
|
|
}
|
|
SkASSERT(!fBackendTextures.count());
|
|
}
|
|
|
|
private:
|
|
SkBitmap fOriginalBMs[2];
|
|
sk_sp<SkImage> fImages[2][kLastEnum_SkYUVColorSpace + 1][kLast_YUVFormat + 1];
|
|
SkTArray<GrBackendTexture> fBackendTextures;
|
|
bool fUseTargetColorSpace;
|
|
bool fUseDomain;
|
|
sk_sp<SkColorSpace> fTargetColorSpace;
|
|
|
|
typedef GM INHERITED;
|
|
};
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
DEF_GM(return new WackyYUVFormatsGM(/* cs */ false, /* domain */ false);)
|
|
DEF_GM(return new WackyYUVFormatsGM(/* cs */ true, /* domain */ false);)
|
|
DEF_GM(return new WackyYUVFormatsGM(/* cs */ false, /* domain */ true);)
|
|
|
|
class YUVMakeColorSpaceGM : public GpuGM {
|
|
public:
|
|
YUVMakeColorSpaceGM() {
|
|
this->setBGColor(0xFFCCCCCC);
|
|
}
|
|
|
|
protected:
|
|
SkString onShortName() override {
|
|
return SkString("yuv_make_color_space");
|
|
}
|
|
|
|
SkISize onISize() override {
|
|
int numCols = 4; // (transparent, opaque) x (untagged, tagged)
|
|
int numRows = 5; // original, YUV, subset, readPixels, makeNonTextureImage
|
|
return SkISize::Make(numCols * (kTileWidthHeight + kPad) + kPad,
|
|
numRows * (kTileWidthHeight + kPad) + kPad);
|
|
}
|
|
|
|
void onOnceBeforeDraw() override {
|
|
SkPoint origin = { kTileWidthHeight/2.0f, kTileWidthHeight/2.0f };
|
|
float outerRadius = kTileWidthHeight/2.0f - 20.0f;
|
|
float innerRadius = 20.0f;
|
|
|
|
{
|
|
// transparent
|
|
SkTDArray<SkRect> circles;
|
|
SkPath path = create_splat(origin, innerRadius, outerRadius, 1.0f, 5, &circles);
|
|
fOriginalBMs[0] = make_bitmap(kN32_SkColorType, path, circles, false, false);
|
|
}
|
|
|
|
{
|
|
// opaque
|
|
SkTDArray<SkRect> circles;
|
|
SkPath path = create_splat(origin, innerRadius, outerRadius, 1.0f, 7, &circles);
|
|
fOriginalBMs[1] = make_bitmap(kN32_SkColorType, path, circles, true, false);
|
|
}
|
|
|
|
fTargetColorSpace = SkColorSpace::MakeSRGB()->makeColorSpin();
|
|
}
|
|
|
|
void createImages(GrContext* context) {
|
|
for (bool opaque : { false, true }) {
|
|
PlaneData planes;
|
|
extract_planes(fOriginalBMs[opaque], kJPEG_SkYUVColorSpace, &planes);
|
|
|
|
SkBitmap resultBMs[4];
|
|
SkYUVAIndex yuvaIndices[4];
|
|
|
|
create_YUV(planes, kAYUV_YUVFormat, resultBMs, yuvaIndices, opaque);
|
|
|
|
int numTextures;
|
|
if (!SkYUVAIndex::AreValidIndices(yuvaIndices, &numTextures)) {
|
|
continue;
|
|
}
|
|
|
|
GrBackendTexture yuvaTextures[4];
|
|
for (int i = 0; i < numTextures; ++i) {
|
|
yuvaTextures[i] = create_yuva_texture(context, resultBMs[i], yuvaIndices, i,
|
|
kAYUV_YUVFormat);
|
|
if (yuvaTextures[i].isValid()) {
|
|
fBackendTextures.push_back(yuvaTextures[i]);
|
|
}
|
|
}
|
|
|
|
fImages[opaque][0] = SkImage::MakeFromYUVATextures(
|
|
context,
|
|
kJPEG_SkYUVColorSpace,
|
|
yuvaTextures,
|
|
yuvaIndices,
|
|
{ fOriginalBMs[opaque].width(), fOriginalBMs[opaque].height() },
|
|
kTopLeft_GrSurfaceOrigin);
|
|
fImages[opaque][1] = SkImage::MakeFromYUVATextures(
|
|
context,
|
|
kJPEG_SkYUVColorSpace,
|
|
yuvaTextures,
|
|
yuvaIndices,
|
|
{ fOriginalBMs[opaque].width(), fOriginalBMs[opaque].height() },
|
|
kTopLeft_GrSurfaceOrigin,
|
|
SkColorSpace::MakeSRGB());
|
|
}
|
|
}
|
|
|
|
void onDraw(GrContext* context, GrRenderTargetContext*, SkCanvas* canvas) override {
|
|
this->createImages(context);
|
|
|
|
int x = kPad;
|
|
for (int tagged : { 0, 1 }) {
|
|
for (int opaque : { 0, 1 }) {
|
|
int y = kPad;
|
|
|
|
auto raster = SkImage::MakeFromBitmap(fOriginalBMs[opaque])
|
|
->makeColorSpace(fTargetColorSpace);
|
|
canvas->drawImage(raster, x, y);
|
|
y += kTileWidthHeight + kPad;
|
|
|
|
auto yuv = fImages[opaque][tagged]->makeColorSpace(fTargetColorSpace);
|
|
SkASSERT(SkColorSpace::Equals(yuv->colorSpace(), fTargetColorSpace.get()));
|
|
canvas->drawImage(yuv, x, y);
|
|
y += kTileWidthHeight + kPad;
|
|
|
|
auto subset = yuv->makeSubset(SkIRect::MakeWH(kTileWidthHeight / 2,
|
|
kTileWidthHeight / 2));
|
|
canvas->drawImage(subset, x, y);
|
|
y += kTileWidthHeight + kPad;
|
|
|
|
auto nonTexture = yuv->makeNonTextureImage();
|
|
canvas->drawImage(nonTexture, x, y);
|
|
y += kTileWidthHeight + kPad;
|
|
|
|
SkBitmap readBack;
|
|
readBack.allocPixels(yuv->imageInfo());
|
|
yuv->readPixels(readBack.pixmap(), 0, 0);
|
|
canvas->drawBitmap(readBack, x, y);
|
|
|
|
x += kTileWidthHeight + kPad;
|
|
}
|
|
}
|
|
|
|
context->flush();
|
|
GrGpu* gpu = context->priv().getGpu();
|
|
SkASSERT(gpu);
|
|
gpu->testingOnly_flushGpuAndSync();
|
|
for (const auto& tex : fBackendTextures) {
|
|
context->deleteBackendTexture(tex);
|
|
}
|
|
fBackendTextures.reset();
|
|
}
|
|
|
|
private:
|
|
SkBitmap fOriginalBMs[2];
|
|
sk_sp<SkImage> fImages[2][2];
|
|
SkTArray<GrBackendTexture> fBackendTextures;
|
|
sk_sp<SkColorSpace> fTargetColorSpace;
|
|
|
|
typedef GM INHERITED;
|
|
};
|
|
|
|
DEF_GM(return new YUVMakeColorSpaceGM();)
|
|
|
|
}
|
|
|
|
///////////////
|
|
|
|
#include "include/effects/SkColorMatrix.h"
|
|
#include "src/core/SkAutoPixmapStorage.h"
|
|
#include "src/core/SkYUVMath.h"
|
|
#include "tools/Resources.h"
|
|
|
|
static void draw_into_alpha(const SkImage* img, sk_sp<SkColorFilter> cf, const SkPixmap& dst) {
|
|
auto canvas = SkCanvas::MakeRasterDirect(dst.info(), dst.writable_addr(), dst.rowBytes());
|
|
canvas->scale(1.0f * dst.width() / img->width(), 1.0f * dst.height() / img->height());
|
|
SkPaint paint;
|
|
paint.setFilterQuality(kLow_SkFilterQuality);
|
|
paint.setColorFilter(cf);
|
|
paint.setBlendMode(SkBlendMode::kSrc);
|
|
canvas->drawImage(img, 0, 0, &paint);
|
|
}
|
|
|
|
static void split_into_yuv(const SkImage* img, SkYUVColorSpace cs, const SkPixmap dst[3]) {
|
|
float m[20];
|
|
SkColorMatrix_RGB2YUV(cs, m);
|
|
|
|
memcpy(m + 15, m + 0, 5 * sizeof(float)); // copy Y into A
|
|
draw_into_alpha(img, SkColorFilters::Matrix(m), dst[0]);
|
|
|
|
memcpy(m + 15, m + 5, 5 * sizeof(float)); // copy U into A
|
|
draw_into_alpha(img, SkColorFilters::Matrix(m), dst[1]);
|
|
|
|
memcpy(m + 15, m + 10, 5 * sizeof(float)); // copy V into A
|
|
draw_into_alpha(img, SkColorFilters::Matrix(m), dst[2]);
|
|
}
|
|
|
|
static void draw_diff(SkCanvas* canvas, SkScalar x, SkScalar y,
|
|
const SkImage* a, const SkImage* b) {
|
|
auto sh = SkShaders::Blend(SkBlendMode::kDifference, a->makeShader(), b->makeShader());
|
|
SkPaint paint;
|
|
paint.setShader(sh);
|
|
canvas->save();
|
|
canvas->translate(x, y);
|
|
canvas->drawRect(SkRect::MakeWH(a->width(), a->height()), paint);
|
|
|
|
SkColorMatrix cm;
|
|
cm.setScale(64, 64, 64);
|
|
paint.setShader(sh->makeWithColorFilter(SkColorFilters::Matrix(cm)));
|
|
canvas->translate(0, a->height());
|
|
canvas->drawRect(SkRect::MakeWH(a->width(), a->height()), paint);
|
|
|
|
canvas->restore();
|
|
}
|
|
|
|
// Exercises SkColorMatrix_RGB2YUV for yuv colorspaces, showing the planes, and the
|
|
// resulting (recombined) images (gpu only for now).
|
|
//
|
|
class YUVSplitterGM : public skiagm::GM {
|
|
sk_sp<SkImage> fOrig;
|
|
SkAutoPixmapStorage fStorage[3];
|
|
SkPixmap fPM[3];
|
|
|
|
public:
|
|
YUVSplitterGM() {}
|
|
|
|
protected:
|
|
|
|
SkString onShortName() override {
|
|
return SkString("yuv_splitter");
|
|
}
|
|
|
|
SkISize onISize() override {
|
|
return SkISize::Make(1024, 768);
|
|
}
|
|
|
|
void onOnceBeforeDraw() override {
|
|
fOrig = GetResourceAsImage("images/mandrill_256.png");
|
|
|
|
SkImageInfo info = SkImageInfo::Make(fOrig->width(), fOrig->height(), kAlpha_8_SkColorType,
|
|
kPremul_SkAlphaType);
|
|
fStorage[0].alloc(info);
|
|
if (0) {
|
|
// if you want to scale U,V down by 1/2
|
|
info = info.makeWH(info.width()/2, info.height()/2);
|
|
}
|
|
fStorage[1].alloc(info);
|
|
fStorage[2].alloc(info);
|
|
for (int i = 0; i < 3; ++i) {
|
|
fPM[i] = fStorage[i];
|
|
}
|
|
}
|
|
|
|
void onDraw(SkCanvas* canvas) override {
|
|
SkYUVAIndex indices[4];
|
|
indices[SkYUVAIndex::kY_Index] = {0, SkColorChannel::kR};
|
|
indices[SkYUVAIndex::kU_Index] = {1, SkColorChannel::kR};
|
|
indices[SkYUVAIndex::kV_Index] = {2, SkColorChannel::kR};
|
|
indices[SkYUVAIndex::kA_Index] = {-1, SkColorChannel::kR};
|
|
|
|
canvas->translate(fOrig->width(), 0);
|
|
canvas->save();
|
|
for (auto cs : {kRec709_SkYUVColorSpace, kRec601_SkYUVColorSpace, kJPEG_SkYUVColorSpace}) {
|
|
split_into_yuv(fOrig.get(), cs, fPM);
|
|
auto img = SkImage::MakeFromYUVAPixmaps(canvas->getGrContext(), cs, fPM, indices,
|
|
fPM[0].info().dimensions(),
|
|
kTopLeft_GrSurfaceOrigin,
|
|
false, false, nullptr);
|
|
if (img) {
|
|
canvas->drawImage(img, 0, 0, nullptr);
|
|
draw_diff(canvas, 0, fOrig->height(), fOrig.get(), img.get());
|
|
}
|
|
canvas->translate(fOrig->width(), 0);
|
|
}
|
|
canvas->restore();
|
|
canvas->translate(-fOrig->width(), 0);
|
|
|
|
canvas->drawImage(SkImage::MakeRasterCopy(fPM[0]), 0, 0, nullptr);
|
|
canvas->drawImage(SkImage::MakeRasterCopy(fPM[1]), 0, fPM[0].height(), nullptr);
|
|
canvas->drawImage(SkImage::MakeRasterCopy(fPM[2]),
|
|
0, fPM[0].height() + fPM[1].height(), nullptr);
|
|
}
|
|
|
|
private:
|
|
typedef GM INHERITED;
|
|
};
|
|
DEF_GM( return new YUVSplitterGM; )
|