std::unique_ptr<SkEncoder> SkJpegEncoder::Make(SkWStream* dst, const SkPixmap& src,
const Options& options) {
if (!SkPixmapIsValid(src, options.fBlendBehavior)) {
return nullptr;
}
std::unique_ptr<SkJpegEncoderMgr> encoderMgr = SkJpegEncoderMgr::Make(dst);
if (setjmp(encoderMgr->jmpBuf())) {
return nullptr;
}
if (!encoderMgr->setParams(src.info(), options)) {
return nullptr;
}
jpeg_set_quality(encoderMgr->cinfo(), options.fQuality, TRUE);
jpeg_start_compress(encoderMgr->cinfo(), TRUE);
sk_sp<SkData> icc = icc_from_color_space(src.info());
if (icc) {
// Create a contiguous block of memory with the icc signature followed by the profile.
sk_sp<SkData> markerData =
SkData::MakeUninitialized(kICCMarkerHeaderSize + icc->size());
uint8_t* ptr = (uint8_t*) markerData->writable_data();
memcpy(ptr, kICCSig, sizeof(kICCSig));
ptr += sizeof(kICCSig);
*ptr++ = 1; // This is the first marker.
*ptr++ = 1; // Out of one total markers.
memcpy(ptr, icc->data(), icc->size());
jpeg_write_marker(encoderMgr->cinfo(), kICCMarker, markerData->bytes(), markerData->size());
}
return std::unique_ptr<SkJpegEncoder>(new SkJpegEncoder(std::move(encoderMgr), src));
}
std::unique_ptr<SkEncoder> SkPngEncoder::Make(SkWStream* dst, const SkPixmap& src,
const Options& options) {
if (!SkPixmapIsValid(src)) {
return nullptr;
}
std::unique_ptr<SkPngEncoderMgr> encoderMgr = SkPngEncoderMgr::Make(dst);
if (!encoderMgr) {
return nullptr;
}
if (!encoderMgr->setHeader(src.info(), options)) {
return nullptr;
}
if (!encoderMgr->setColorSpace(src.info())) {
return nullptr;
}
if (!encoderMgr->writeInfo(src.info())) {
return nullptr;
}
encoderMgr->chooseProc(src.info());
return std::unique_ptr<SkPngEncoder>(new SkPngEncoder(std::move(encoderMgr), src));
}