how to create heif,hif format picture by vb6?vb6 webp

[xiaoyao]

libheif/libheif at master · strukturag/libheif
https://github.com/strukturag/libhei...master/libheif

HEIF Image Extensions - Microsoft Apps
https://apps.microsoft.com/detail/9p...ab&hl=en&gl=NL

use this can show hif picture by wic,how to load png file,and save as heic/hif format?webp format?

[xiaoyao]

jpgQuality=100%?301KB
jpgQuality=NULL?149KB
WHY? NOT SET ImageQuality:
pEnc.CreateNewFrame pTFrame, Nothing
hr = pTFrame.Initialize(Nothing)

        If SaveFormat = "jpg" And jpgQuality <> 101 Then
            pEnc.CreateNewFrame pTFrame, ppbag
            
            Dim optImgQuality As PROPBAG2
            optImgQuality.pstrName = StrPtr("ImageQuality")
            Dim pv As Variant, bfb As Single
            bfb = jpgQuality / 100
            pv = bfb
            ppbag.Write 1&, optImgQuality, VarPtr(pv)
            hr = pTFrame.Initialize(ppbag)
        Else
            pEnc.CreateNewFrame pTFrame, Nothing
            hr = pTFrame.Initialize(Nothing)
        End If

[Arnoutdv]

jpgQuality=100%?301KB
jpgQuality=NULL?149KB
WHY? NOT SET ImageQuality:

Maybe because the default is like 70% or 80% when nothing is specified?

[xiaoyao]

Maybe because the default is like 70% or 80% when nothing is specified?

When converting to Jpg without specifying a quality, GDIPLUS defaults to 90%

[Arnoutdv]

Then set it to 90% if you want to be sure it's 90%

[xiaoyao]

Index of downloads.webmproject.org/releases/webp
https://storage.googleapis.com/downl...ebp/index.html
https://storage.googleapis.com/downl...x86-no-wic.zip
https://storage.googleapis.com/downl...indows-x86.zip

how to use by vb6 without exe?

[fafalone]

IIRC WIC can only read HEIF, not save in it. libwebp isn't a WIC codec, you'd need to use that library directly.

[VanGoghGaming]

The BitmapEncoder Class can create HEIF format.

[k_zeon]

The BitmapEncoder Class can create HEIF format.

would be really great if someone who knows can create a small example that we can use to save images in the HEIF format.

[fafalone]

It looks like it just wraps WIC (the sample code uses WIC error codes).. has the save part been tried?

[xiaoyao]

I LOAD A WEBP FILE,WHY guid,uuid not webp?

pDecoder.GetFrame mFrame, pFrame
pDecoder.GetContainerFormat tCF
tcf UUID={1F122879-EBA0-4670-98C5-CF29F3B98711}
1F122879, 0xEBA0, 0x4670, 0x98, 0xC5, 0xCF, 0x29, 0xF3, 0xB9, 0x87, 0x11
https://github.com/webmproject/webp-...ain/src/uuid.h

https://github.com/webmproject/webp-wic-codec

Windows Imaging Component wrapper around libwebp for WebP support.
Currently, only decoding is supported, but that allows to e.g., see the files
in Windows PhotoViewer.

        If imgFormat = 0 Then: If IsEqualIID(tCF, GUID_ContainerFormatWebp) Then imgFormat = WFF_WEBP
Static iid As UUID
     If (iid.data1 = 0&) Then Call DEFINE_UUID(iid, &HE094B0E2, &H67F2, &H45B3, &HB0, &HEA, &H11, &H53, &H37, &HCA, &H7C, &HF3)
    GUID_ContainerFormatWebp = iid
End Function

[xiaoyao]

It looks like it just wraps WIC (the sample code uses WIC error codes).. has the save part been tried?

i try to load img by your wic lib,can show images,can save as png/jpg, but can't save as webp,heif format image.

i have a dll can save as webp image.

Function ImageToWebp(ByVal ImageFile As String, ByVal SaveAsWebp As String, Optional jpgQuality As Long = 90, Optional ByRef BackWebpimgPtr As Long) As Boolean
        Dim Ret As Long
        Dim Buffer() As Byte
        Dim FromImgPtr As Long, BufferLenA As Long
        Static WebpimgPtr As Long
        Dim WebpLen As Long
        
        GetFileByte ImageFile, Buffer
        FromImgPtr = VarPtr(Buffer(0))
        BufferLenA = UBound(Buffer) + 1

        If WebpimgPtr <> 0 Then FreeWebpData WebpimgPtr
        Ret = SaveImageAsWebp(FromImgPtr, BufferLenA, VarPtr(WebpimgPtr), VarPtr(WebpLen), jpgQuality)
        If SaveAsWebp <> "" Then
                SaveFileByAPI SaveAsWebp, WebpimgPtr, WebpLen
                FreeWebpData WebpimgPtr
                WebpimgPtr = 0
        Else
            BackWebpimgPtr = WebpimgPtr
        End If
        ImageToWebp = WebpLen > 0
End Function

[-Franky-]

First you have to identify all WIC encoders/decoders. Only then can you see which image formats can be read or written. You can find an example on ActiveVB in the Up/Download area -> VBC_WIC_Codecs.zip As always without TLB.

[fafalone]

If you've installed additional ones sure; but even if some new Win11 version started including it with the preinstalled set, they probably wouldn't even give it to 10, let alone 7.

"Currently, only decoding is supported, but that allows to e.g., see the files
in Windows PhotoViewer."

That means you CANNOT SAVE WEBP WITH WIC USING THAT PROJECT, xaioyao.

I swear this guy must have deep burning hatred for using a decent translator.

[xiaoyao]

If you've installed additional ones sure; but even if some new Win11 version started including it with the preinstalled set, they probably wouldn't even give it to 10, let alone 7.

"Currently, only decoding is supported, but that allows to e.g., see the files
in Windows PhotoViewer."

That means you CANNOT SAVE WEBP WITH WIC USING THAT PROJECT, xaioyao.

I swear this guy must have deep burning hatred for using a decent translator.

IT'S COPY FROM HERE:
https://github.com/webmproject/webp-wic-codec

[fafalone]

Yes and "only decoding supported" means it cannot save (encode).

Decode = Open
Encode = Save

"Only decode" = Open only, no saving.

[-Franky-]

WIC can read and write Heic and Heif. Only read Webp. As already written. List all WIC encoders and decoders, then you will know. I can read the following image formats on my PC:
BMP Decoder: *.bmp;*.dib;*.rle
GIF Decoder: *.gif
ICO Decoder: *.ico;*.icon
CUR Decoder: *.cur
JPEG Decoder: *.jpeg;*.jpe;*.jpg;*.jfif;*.exif
PNG Decoder: *.png
TIFF Decoder: *.tiff;*.tif
DNG Decoder: *.dng
WMPhoto Decoder: *.wdp;*.jxr
DDS Decoder: *.dds
Microsoft HEIF Decoder: *.heic;*.heif;*.hif;*.avci;*.heics;*.heifs;*.avcs;*.avif;*.avifs
Microsoft Webp Decoder: *.webp
Microsoft Raw Image Decoder: *.3fr;*.ari;*.arw;*.bay;*.cap;*.cr2;*.cr3;*.crw;*.dcs;*.dcr;*.drf;*.eip;*.erf;*.fff;*.iiq;*.k25;*.kd c;*.mef;*.mos;*.mrw;*.nef;*.nrw;*.orf;*.ori;*.pef;*.ptx;*.pxn;*.raf;*.raw;*.rw2;*.rwl;*.sr2;*.srf;*. srw;*.x3f;*.dng
Microsoft Camera Raw Decoder: *.arw;*.cr2;*.crw;*.erf;*.kdc;*.mrw;*.nef;*.nrw;*.orf;*.pef;*.raf;*.raw;*.rw2;*.rwl;*.sr2;*.srw;*.dn g

and write the following:
BMP Encoder: *.bmp;*.dib;*.rle
GIF Encoder: *.gif
JPEG Encoder: *.jpeg;*.jpe;*.jpg;*.jfif;*.exif
PNG Encoder: *.png
TIFF Encoder: *.tiff;*.tif
WMPhoto Encoder: *.wdp;*.jxr
DDS Encoder: *.dds
Microsoft HEIF Encoder: *.heic;*.heif;*.hif

In addition to the free Heic/Heif codec from the Windows Store, you also need HEVC video extensions from the Windows Store: -> Images saved in HEIF files with the file extension ".heic" are compressed using the HEVC format. These files also require the HEVC video extensions package to be installed. If the HEVC video extensions package is not installed, the HEIF image extension cannot read or write HEIC files.

[xiaoyao]

WIC can read and write Heic and Heif. Only read Webp. As already written. List all WIC encoders and decoders, then you will know. I can read the following image formats on my PC:
BMP Decoder: *.bm
Microsoft HEIF Encoder: *.heic;*.heif;*.hif

In addition to the free Heic/Heif codec from the Windows Store, you also need HEVC video extensions from the Windows Store: -> Images saved in HEIF files with the file extension ".heic" are compressed using the HEVC format. These files also require the HEVC video extensions package to be installed. If the HEVC video extensions package is not installed, the HEIF image extension cannot read or write HEIC files.

What code can be used to list all the encoders and decoders?
This needs additional installation. Microsoft HEIF Encoder:

25 years ago, our broadband speed was only 128kb/PS. That's because photoshop provides a function that can export multiple images. Format It displays GIF, PNG, JPG, the size of each image, and the clarity that can be viewed directly.
Now the hard disk is big enough to consider this matter, but for some specialized image services, they are more important.

[-Franky-]

What code can be used to list all the encoders and decoders?

See post #13.

[VanGoghGaming]

It looks like it just wraps WIC (the sample code uses WIC error codes).. has the save part been tried?

Can confirm that it successfully saves HEIF files but only after installing "HEVC Video Extensions" from the Microsoft Store (costs $0.99 lolz).

[-Franky-]

Technically speaking, there are two "HEVC Video Extensions" in the store. The one you find in the store costs $0.99. The one you can no longer find in the store is the "HEVC Video Extensions from Manufacturer" and that was free. There is a little trick to download the free extension from the store. Go to store.rg-adguard.net/ Change to ProductID and search for 9n4wgh0z6vhq. Download the Microsoft.HEVCVideoExtension_2.2.9.0_neutral_~_8wekyb3d8bbwe.appxbundle there and install it accordingly.

[fafalone]

Can confirm that it successfully saves HEIF files but only after installing "HEVC Video Extensions" from the Microsoft Store (costs $0.99 lolz).

and regular WIC doesn't after that?

[VanGoghGaming]

I dunno, it probably should work as well, I just never played with WIC. The WinRT way is pretty slick though! You could give it a go using Franky's trick above, that works too!

[-Franky-]

and regular WIC doesn't after that?

For WIC to read and write .heic/.heif, the Heic/Heif codec and the HEVC video extensions from the store are required.
Without "HEVC video extensions" WIC should give the error 0xC00D5212 = MF_E_TOPO_CODEC_NOT_FOUND when trying to read or write a HEIC/HEIF. The error is produced by the Media Foundation.