It is often the output format of choice for scanners, so viewer/editor support is fairly common. TIFF can also support either big-endian or little-endian and up to 16-bits per sample. Once you get the header done, then you can stream the raw pixel data in rasterized RGB or RGBA order as it's generated. It is not as streamable and requires offset tables, but you can get around this with brute-force precalculation and by defining the entire image as a single strip. TIFF design is focused on storing rasterized scans of documents and uses a more complex TTLV-style header. If your data is not in BGR/BGRA order and you can't or don't want to convert it, my second recommendation would be TIFF: TGA format isn't as widely supported as GIF/JPEG/PNG, but you should find some viewers capable of rendering it.įor BGR data, the header would probably be (hexadecimal values):Ġx00 0x00 0x02 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 The width/height fields in the header must be 16-bit little-endian. The biggest limitation is samples must be in rasterized BGR order with an optional fourth channel (usually alpha but can be anything). There is no requirement for length/offset/CRC tables. It's streamable, meaning image data can be written as generated, provided it's rasterized. It has a very simple 18-byte header, then raw pixel data. TGA was designed to store rasterized images that could be quickly loaded for display into frame buffers. Uncompressed JPEG and PNG are non-trivial, and the results would likely have portability issues. But you still need to take care of how the pixels are organized in memory (for example, one byte per channel? RGB? BGR? RGBA ?) and perhaps some other issues (for example, BMP requires that the bytes per line are multiple of 4). You can use your own or some standard RAW format, or the quasi-raw BMP format. IN that case, of course, you cannot write a PNG or JPEG image. That is, you want to write the pixels in your unencoded ("raw") format. Second, it seems that you want to avoid not exactly (only) the compression, but the encoding. However: a) there are few scenarios in which that "optimization" would make a critical difference, the normal compressors are quite quick.ī) Even when encoding using some compression_level=0 setting, you are still encoding the image in a particular format (typically a header, to start with). PNG and JPEG are compressed formats, though you can instruct the encoder (at least in some PNG implementations) to use the "no compress" setting. You can also save the images to your clipboard, online or to share with others.There seem to be two different issues or motivations on your part.įirst, there is the desire to write an image in some uncompressed format to (presumably) gain speed.
#Duckcapture make jpeg and png images software
The software can not edit, but you can capture scrolling pages. Four modes allow for easy captureĭuckCapture allows you to easily capture screen shots depending on your needs. If you are skilled in writing scripts, DuckCapture can be extended to provide additional functionality. You can't delay the capture to take timed screenshots. There is no editing feature, unlike Screenpresso and Snagit. Once you have assigned the hotkeys, you can use them to call up your favorite capture modes. You can assign buttons to different tasks if you are frustrated searching for screen capture functions. These annotations are saved to your screen so others can see them.
After selecting the screen area to capture, you can add text in different font sizes and styles. Shortcuts and informative annotationsĭuckCapture allows you to add annotations. This means you don't have any work to do. DuckCapture will slow scroll the page down for you once you have selected the scroll function. You can capture a whole screen, a region, a page, or a scrolling high page. There are three options for saving: JPG, BMP and PNG. You can either save the image to your clipboard, or transfer it to Minus which is an online file sharing site. It is as easy as choosing the area to capture and drawing an outline. Different ways to capture the screenĭuckCapture is a screen-capturing tool that makes it easier to do the job. This software program is easy to use with three different save formats. You can snap a screenshot from your computer using four capture modes. Screen capture tool that can be used to capture screen images on a flexible basis
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