SkWebpCodec.cpp File Reference

#include "src/codec/SkWebpCodec.h"
#include "include/codec/SkCodec.h"
#include "include/codec/SkCodecAnimation.h"
#include "include/codec/SkWebpDecoder.h"
#include "include/core/SkAlphaType.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkColorType.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkRect.h"
#include "include/core/SkSize.h"
#include "include/core/SkStream.h"
#include "include/private/base/SkAlign.h"
#include "include/private/base/SkMath.h"
#include "include/private/base/SkTFitsIn.h"
#include "include/private/base/SkTemplates.h"
#include "include/private/base/SkTo.h"
#include "modules/skcms/skcms.h"
#include "src/codec/SkParseEncodedOrigin.h"
#include "src/codec/SkSampler.h"
#include "src/core/SkRasterPipeline.h"
#include "src/core/SkRasterPipelineOpContexts.h"
#include "src/core/SkRasterPipelineOpList.h"
#include "src/core/SkStreamPriv.h"
#include <algorithm>
#include <cstdint>
#include <cstring>
#include <utility>
#include "webp/decode.h"
#include "webp/demux.h"
#include "webp/mux_types.h"

Go to the source code of this file.

Namespaces
namespace	SkWebpDecoder

Functions
static WEBP_CSP_MODE	webp_decode_mode (SkColorType dstCT, bool premultiply)
static bool	is_8888 (SkColorType colorType)
static void	blend_line (SkColorType dstCT, void *dst, SkColorType srcCT, const void *src, SkAlphaType dstAt, bool srcHasAlpha, int width)
SK_API bool	SkWebpDecoder::IsWebp (const void *, size_t)
SK_API std::unique_ptr< SkCodec >	SkWebpDecoder::Decode (std::unique_ptr< SkStream >, SkCodec::Result *, SkCodecs::DecodeContext=nullptr)
SK_API std::unique_ptr< SkCodec >	SkWebpDecoder::Decode (sk_sp< SkData >, SkCodec::Result *, SkCodecs::DecodeContext=nullptr)

Function Documentation

blend_line()

static void blend_line ( SkColorType  dstCT, void *  dst, SkColorType  srcCT, const void *  src, SkAlphaType  dstAt, bool  srcHasAlpha, int  width  )

static

Definition at line 338 of file SkWebpCodec.cpp.

                                  {
    SkRasterPipeline_MemoryCtx dst_ctx = {                   dst,  0 },
                               src_ctx = { const_cast<void*>(src), 0 };
 
    SkRasterPipeline_<256> p;
 
    p.appendLoadDst(dstCT, &dst_ctx);
    if (kUnpremul_SkAlphaType == dstAt) {
        p.append(SkRasterPipelineOp::premul_dst);
    }
 
    p.appendLoad(srcCT, &src_ctx);
    if (srcHasAlpha) {
        p.append(SkRasterPipelineOp::premul);
    }
 
    p.append(SkRasterPipelineOp::srcover);
 
    if (kUnpremul_SkAlphaType == dstAt) {
        p.append(SkRasterPipelineOp::unpremul);
    }
    p.appendStore(dstCT, &dst_ctx);
 
    p.run(0,0, width,1);
}

is_8888()

static bool is_8888 ( SkColorType  colorType )

static

Definition at line 327 of file SkWebpCodec.cpp.

                                           {
    switch (colorType) {
        case kRGBA_8888_SkColorType:
        case kBGRA_8888_SkColorType:
            return true;
        default:
            return false;
    }
}

webp_decode_mode()

static WEBP_CSP_MODE webp_decode_mode ( SkColorType  dstCT, bool  premultiply  )

static

Definition at line 200 of file SkWebpCodec.cpp.

                                                                           {
    switch (dstCT) {
        case kBGRA_8888_SkColorType:
            return premultiply ? MODE_bgrA : MODE_BGRA;
        case kRGBA_8888_SkColorType:
            return premultiply ? MODE_rgbA : MODE_RGBA;
        case kRGB_565_SkColorType:
            return MODE_RGB_565;
        default:
            return MODE_LAST;
    }
}