Function avifEncoderDataCreateExifItem

src/write.c:1112–1133

}

static avifResult avifEncoderDataCreateExifItem(avifEncoderData * data, const avifRWData * exif)
{
    size_t exifTiffHeaderOffset;
    const avifResult result = avifGetExifTiffHeaderOffset(exif->data, exif->size, &exifTiffHeaderOffset);
    if (result != AVIF_RESULT_OK) {
        // Couldn't find the TIFF header
        return result;
    }

    avifEncoderItem * exifItem = avifEncoderDataCreateItem(data, "Exif", "Exif", 5, 0);
    if (!exifItem) {
        return AVIF_RESULT_OUT_OF_MEMORY;
    }
    exifItem->irefToID = data->primaryItemID;
    exifItem->irefType = "cdsc";

    const uint32_t offset32bit = avifHTONL((uint32_t)exifTiffHeaderOffset);
    AVIF_CHECKRES(avifRWDataRealloc(&exifItem->metadataPayload, sizeof(offset32bit) + exif->size));
    memcpy(exifItem->metadataPayload.data, &offset32bit, sizeof(offset32bit));
    memcpy(exifItem->metadataPayload.data + sizeof(offset32bit), exif->data, exif->size);
    return AVIF_RESULT_OK;
}

static avifResult avifEncoderDataCreateXMPItem(avifEncoderData * data, const avifRWData * xmp)
{