SkJpegEncoderImpl.cpp File Reference

#include "src/encode/SkJpegEncoderImpl.h"
#include "include/core/SkAlphaType.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkColorType.h"
#include "include/core/SkData.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkPixmap.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkStream.h"
#include "include/core/SkYUVAInfo.h"
#include "include/core/SkYUVAPixmaps.h"
#include "include/encode/SkEncoder.h"
#include "include/encode/SkJpegEncoder.h"
#include "include/private/base/SkAssert.h"
#include "include/private/base/SkNoncopyable.h"
#include "include/private/base/SkTemplates.h"
#include "src/base/SkMSAN.h"
#include "src/codec/SkJpegConstants.h"
#include "src/codec/SkJpegPriv.h"
#include "src/encode/SkImageEncoderFns.h"
#include "src/encode/SkImageEncoderPriv.h"
#include "src/encode/SkJPEGWriteUtility.h"
#include "src/image/SkImage_Base.h"
#include <csetjmp>
#include <cstdint>
#include <cstring>
#include <memory>
#include <utility>
#include "jpeglib.h"

Go to the source code of this file.

Classes
class	SkJpegEncoderMgr

Namespaces
namespace	SkJpegEncoder
namespace	SkJpegMetadataEncoder

Functions
static void	yuva_copy_row (const SkYUVAPixmaps &src, int row, uint8_t *dst)
SK_API bool	SkJpegEncoder::Encode (SkWStream *dst, const SkPixmap &src, const Options &options)
SK_API bool	SkJpegEncoder::Encode (SkWStream *dst, const SkYUVAPixmaps &src, const SkColorSpace *srcColorSpace, const Options &options)
SK_API sk_sp< SkData >	SkJpegEncoder::Encode (GrDirectContext *ctx, const SkImage *img, const Options &options)
SK_API std::unique_ptr< SkEncoder >	SkJpegEncoder::Make (SkWStream *dst, const SkPixmap &src, const Options &options)
SK_API std::unique_ptr< SkEncoder >	SkJpegEncoder::Make (SkWStream *dst, const SkYUVAPixmaps &src, const SkColorSpace *srcColorSpace, const Options &options)
void	SkJpegMetadataEncoder::AppendICC (SegmentList &segmentList, const SkJpegEncoder::Options &options, const SkColorSpace *colorSpace)
void	SkJpegMetadataEncoder::AppendXMPStandard (SegmentList &segmentList, const SkData *xmpMetadata)

Function Documentation

yuva_copy_row()

static void yuva_copy_row ( const SkYUVAPixmaps &  src, int  row, uint8_t *  dst  )

static

Definition at line 186 of file SkJpegEncoderImpl.cpp.

                                                                           {
    int width = src.plane(0).width();
    switch (src.yuvaInfo().planeConfig()) {
        case SkYUVAInfo::PlaneConfig::kY_U_V: {
            auto [ssWidthU, ssHeightU] = src.yuvaInfo().planeSubsamplingFactors(1);
            auto [ssWidthV, ssHeightV] = src.yuvaInfo().planeSubsamplingFactors(2);
            const uint8_t* srcY = reinterpret_cast<const uint8_t*>(src.plane(0).addr(0, row));
            const uint8_t* srcU =
                    reinterpret_cast<const uint8_t*>(src.plane(1).addr(0, row / ssHeightU));
            const uint8_t* srcV =
                    reinterpret_cast<const uint8_t*>(src.plane(2).addr(0, row / ssHeightV));
            for (int col = 0; col < width; ++col) {
                dst[3 * col + 0] = srcY[col];
                dst[3 * col + 1] = srcU[col / ssWidthU];
                dst[3 * col + 2] = srcV[col / ssWidthV];
            }
            break;
        }
        case SkYUVAInfo::PlaneConfig::kY_UV: {
            auto [ssWidthUV, ssHeightUV] = src.yuvaInfo().planeSubsamplingFactors(1);
            const uint8_t* srcY = reinterpret_cast<const uint8_t*>(src.plane(0).addr(0, row));
            const uint8_t* srcUV =
                    reinterpret_cast<const uint8_t*>(src.plane(1).addr(0, row / ssHeightUV));
            for (int col = 0; col < width; ++col) {
                dst[3 * col + 0] = srcY[col];
                dst[3 * col + 1] = srcUV[2 * (col / ssWidthUV) + 0];
                dst[3 * col + 2] = srcUV[2 * (col / ssWidthUV) + 1];
            }
            break;
        }
        default:
            break;
    }
}