File include/brisk/graphics/ImageFormats.hpp¶
ImageCodec enum¶
enum class ImageCodec
Enum representing the various image codecs supported for encoding and decoding.
PNG enumerator (ImageCodec::PNG)¶
Portable Network Graphics
BMP enumerator (ImageCodec::BMP)¶
Bitmap Image File
JPEG enumerator (ImageCodec::JPEG)¶
Joint Photographic Experts Group
WEBP enumerator (ImageCodec::WEBP)¶
WebP Image Format
ImageIoError enum¶
enum class ImageIoError
Enum representing potential image I/O errors.
CodecError enumerator (ImageIoError::CodecError)¶
Error related to codec processing
InvalidFormat enumerator (ImageIoError::InvalidFormat)¶
Error due to an invalid image format
defaultImageQuality variable¶
inline int defaultImageQuality = 98
Default image quality for encoding.
This value is used as the default quality setting when encoding images, with a typical range of 0 (lowest quality) to 100 (highest quality).
ColorSubsampling enum¶
enum class ColorSubsampling
Enum representing color subsampling methods for images.
S444 enumerator (ColorSubsampling::S444)¶
4:4:4 color subsampling (no subsampling)
S422 enumerator (ColorSubsampling::S422)¶
4:2:2 color subsampling (horizontal subsampling)
S420 enumerator (ColorSubsampling::S420)¶
4:2:0 color subsampling (both horizontal and vertical subsampling)
defaultColorSubsampling variable¶
inline ColorSubsampling defaultColorSubsampling =
ColorSubsampling::S420
Default color subsampling method.
guessImageCodec function¶
std::optional<ImageCodec> guessImageCodec(BytesView bytes)
Guesses the image codec based on the provided byte data.
Param bytes A view of the byte data to analyze for codec detection.
Returns An std::optional ImageCodec if the codec can be guessed; otherwise, an empty std::optional.
pngEncode function¶
Bytes pngEncode(Rc<Image> image)
Encodes an image to PNG format.
Param image A reference-counted pointer to the image to be encoded.
Returns A byte vector containing the encoded PNG image data.
bmpEncode function¶
Bytes bmpEncode(Rc<Image> image)
Encodes an image to BMP format.
Param image A reference-counted pointer to the image to be encoded.
Returns A byte vector containing the encoded BMP image data.
jpegEncode function¶
Bytes jpegEncode(
Rc<Image> image,
std::optional<int> quality = std::nullopt,
std::optional<ColorSubsampling> ss = std::nullopt)
Encodes an image to JPEG format.
Param image A reference-counted pointer to the image to be encoded.
Param quality Optional quality parameter for encoding (default is std::nullopt, which uses default
quality).
Param ss Optional color subsampling parameter (default is std::nullopt).
Returns A byte vector containing the encoded JPEG image data.
webpEncode function¶
Bytes webpEncode(
Rc<Image> image,
std::optional<float> quality = std::nullopt,
bool lossless = false)
Encodes an image to WEBP format.
Param image A reference-counted pointer to the image to be encoded.
Param quality Optional quality parameter for encoding (default is std::nullopt).
Param lossless Flag indicating whether to use lossless encoding (default is false).
Returns A byte vector containing the encoded WEBP image data.
WebpAnimationEncoder class¶
WebpAnimationEncoder
Private class (WebpAnimationEncoder::Private)¶
Private
imageEncode function¶
Bytes imageEncode(
ImageCodec codec, Rc<Image> image,
std::optional<int> quality = std::nullopt,
std::optional<ColorSubsampling> ss = std::nullopt)
Encodes an image to the specified format using the provided codec.
Param codec The image codec to use for encoding.
Param image A reference-counted pointer to the image to be encoded.
Param quality Optional quality parameter for encoding (default is std::nullopt).
Param ss Optional color subsampling parameter (default is std::nullopt).
Returns A byte vector containing the encoded image data.
pngDecode function¶
expected<Rc<Image>, ImageIoError>
pngDecode(BytesView bytes,
ImageFormat format = ImageFormat::Unknown,
bool premultiplyAlpha = false)
Decodes a PNG image from the provided byte data.
Param bytes A view of the byte data representing a PNG image.
Param format Optional image format to use for decoding (returns original format if not specified).
Returns An expected result containing a reference-counted pointer to the decoded image or an ImageIoError.
bmpDecode function¶
expected<Rc<Image>, ImageIoError>
bmpDecode(BytesView bytes,
ImageFormat format = ImageFormat::Unknown,
bool premultiplyAlpha = false)
Decodes a BMP image from the provided byte data.
Param bytes A view of the byte data representing a BMP image.
Param format Optional image format to use for decoding (returns original format if not specified).
Returns An expected result containing a reference-counted pointer to the decoded image or an ImageIoError.
jpegDecode function¶
expected<Rc<Image>, ImageIoError>
jpegDecode(BytesView bytes,
ImageFormat format = ImageFormat::Unknown)
Decodes a JPEG image from the provided byte data.
Param bytes A view of the byte data representing a JPEG image.
Param format Optional image format to use for decoding (returns original format if not specified).
Returns An expected result containing a reference-counted pointer to the decoded image or an ImageIoError.
webpDecode function¶
expected<Rc<Image>, ImageIoError>
webpDecode(BytesView bytes,
ImageFormat format = ImageFormat::Unknown,
bool premultiplyAlpha = false)
Decodes a WEBP image from the provided byte data.
Param bytes A view of the byte data representing a WEBP image.
Param format Optional image format to use for decoding (returns original format if not specified).
Returns An expected result containing a reference-counted pointer to the decoded image or an ImageIoError.
imageDecode function¶
expected<Rc<Image>, ImageIoError>
imageDecode(ImageCodec codec, BytesView bytes,
ImageFormat format = ImageFormat::Unknown,
bool premultiplyAlpha = false)
Decodes an image from the provided byte data using the specified codec.
Param codec The image codec to use for decoding.
Param bytes A view of the byte data representing the image.
Param format Optional image format to use for decoding (returns original format if not specified).
Returns An expected result containing a reference-counted pointer to the decoded image or an ImageIoError.
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