SkImageEncoder_NDK.cpp File Reference

#include "include/core/SkBitmap.h"
#include "include/core/SkPixmap.h"
#include "include/core/SkStream.h"
#include "include/encode/SkJpegEncoder.h"
#include "include/encode/SkPngEncoder.h"
#include "include/encode/SkWebpEncoder.h"
#include "include/private/base/SkTFitsIn.h"
#include "include/private/base/SkTo.h"
#include "src/encode/SkImageEncoderPriv.h"
#include "src/image/SkImage_Base.h"
#include "src/ports/SkNDKConversions.h"

Go to the source code of this file.

Namespaces
namespace	SkPngEncoder
namespace	SkJpegEncoder
namespace	SkWebpEncoder

Functions
static AndroidBitmapInfo	info_for_pixmap (const SkPixmap &pmap)
static bool	write_image_to_stream (SkWStream *stream, const SkPixmap &pmap, AndroidBitmapCompressFormat androidFormat, int quality)
SK_API std::unique_ptr< SkEncoder >	SkPngEncoder::Make (SkWStream *dst, const SkPixmap &src, const Options &options)
SK_API bool	SkPngEncoder::Encode (SkWStream *dst, const SkPixmap &src, const Options &options)
SK_API sk_sp< SkData >	SkPngEncoder::Encode (GrDirectContext *ctx, const SkImage *img, const Options &options)
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)
SK_API bool	SkWebpEncoder::Encode (SkWStream *dst, const SkPixmap &src, const Options &options)
SK_API sk_sp< SkData >	SkWebpEncoder::Encode (GrDirectContext *ctx, const SkImage *img, const Options &options)
SK_API bool	SkWebpEncoder::EncodeAnimated (SkWStream *dst, SkSpan< const SkEncoder::Frame > src, const Options &options)

Function Documentation

info_for_pixmap()

static AndroidBitmapInfo info_for_pixmap ( const SkPixmap &  pmap )

static

Definition at line 20 of file SkImageEncoder_NDK.cpp.

                                                               {
    // If any of these values is invalid (e.g. set to zero), the info will be rejected by
    // AndroidBitmap_compress.
    AndroidBitmapInfo info {
        .width  = SkTFitsIn<uint32_t>(pmap.width())    ? SkToU32(pmap.width())    : 0,
        .height = SkTFitsIn<uint32_t>(pmap.height())   ? SkToU32(pmap.height())   : 0,
        .stride = SkTFitsIn<uint32_t>(pmap.rowBytes()) ? SkToU32(pmap.rowBytes()) : 0,
        .format = SkNDKConversions::toAndroidBitmapFormat(pmap.colorType())
    };
 
    switch (pmap.alphaType()) {
        case kPremul_SkAlphaType:
            info.flags = ANDROID_BITMAP_FLAGS_ALPHA_PREMUL;
            break;
        case kOpaque_SkAlphaType:
            info.flags = ANDROID_BITMAP_FLAGS_ALPHA_OPAQUE;
            break;
        case kUnpremul_SkAlphaType:
            info.flags = ANDROID_BITMAP_FLAGS_ALPHA_UNPREMUL;
            break;
        default:
            SkDEBUGFAIL("unspecified alphaType");
            info.flags = ANDROID_BITMAP_FLAGS_ALPHA_OPAQUE;
            break;
    }
    return info;
}

write_image_to_stream()

static bool write_image_to_stream ( SkWStream *  stream, const SkPixmap &  pmap, AndroidBitmapCompressFormat  androidFormat, int  quality  )

static

Definition at line 48 of file SkImageEncoder_NDK.cpp.

                                               {
    AndroidBitmapInfo info = info_for_pixmap(pmap);
 
    auto write_to_stream = [](void* userContext, const void* data, size_t size) {
        return reinterpret_cast<SkWStream*>(userContext)->write(data, size);
    };
 
    return ANDROID_BITMAP_RESULT_SUCCESS == AndroidBitmap_compress(&info,
            SkNDKConversions::toDataSpace(pmap.colorSpace()), pmap.addr(), androidFormat, quality,
            reinterpret_cast<void*>(stream), write_to_stream);
}