Crate hpvca 

Structs

ColorEncoding

CICP-style colour encoding: the primaries + transfer + matrix the image is authored in, plus the sample range. Drives both the HEIF colr (nclx) box and the HEVC VUI signalling.

ContentLightLevel

HDR content light level (CTA-861.3 / ISOBMFF clli): the maximum content light level (MaxCLL) and maximum frame-average light level (MaxFALL), both in cd/m² (nits). Written as the ContentLightLevelBox.

EncodeConfig

Encoder configuration shared by all entry points.

Metadata

All optional metadata passed to the encoder, threaded through crate::EncodeConfig.

Yuv

Planar YCbCr image

Enums

BitDepth

ChromaFormat

Chroma subsampling mode.

ColorMetadata

How the output colour space is described in the file. Either an enumerated CICP encoding (compact nclx) or an embedded ICC profile (prof).

EncodeError

MatrixCoefficients

CICP matrix coefficients for RGB→YCbCr (ISO/IEC 23091-2 Table 4).

Orientation

Primaries

CICP colour primaries (ISO/IEC 23091-2 Table 2).

TransferFunction

CICP transfer characteristics (ISO/IEC 23091-2 Table 3).

Functions

encode_gray8

Encode a packed 8-bit greyscale image to HEIC (monochrome, no chroma).

encode_gray10

Encode a 10-bit greyscale image to HEIC.

encode_gray12

Encode a 12-bit greyscale image to HEIC.

encode_gray_alpha8

Encode a packed 8-bit greyscale + alpha image to HEIC. Alpha is discarded. Use encode_gray_alpha8_with_alpha to preserve it.

encode_gray_alpha8_with_alpha

Encode a packed 8-bit greyscale + alpha image to HEIC with a separate alpha auxiliary image per ISO/IEC 23008-12.

encode_gray_alpha10

Encode a 10-bit greyscale + alpha image to HEIC. Alpha is discarded.

encode_gray_alpha12

Encode a 12-bit greyscale + alpha image to HEIC. Alpha is discarded.

encode_gray_alpha10_with_alpha

Encode a 10-bit greyscale + alpha image to HEIC with a separate alpha auxiliary image.

encode_gray_alpha12_with_alpha

Encode a 12-bit greyscale + alpha image to HEIC with a separate alpha auxiliary image.

encode_rgb8

Encode a packed 8-bit RGB image to HEIC.

encode_rgb10

Encode a 10-bit RGB image to HEIC.

encode_rgb12

Encode a 12-bit RGB image to HEIC.

encode_rgba8

Encode a packed 8-bit RGBA image to HEIC. Alpha is discarded. Use encode_rgba8_with_alpha to preserve it.

encode_rgba8_with_alpha

Encode a packed 8-bit RGBA image to HEIC, writing alpha as a separate monochrome auxiliary image per ISO/IEC 23008-12.

encode_rgba10

Encode a 10-bit RGBA image to HEIC. Alpha is discarded.

encode_rgba12

Encode a 12-bit RGBA image to HEIC. Alpha is discarded.

encode_rgba10_with_alpha

Encode a 10-bit RGBA image to HEIC with a separate alpha auxiliary image.

encode_rgba12_with_alpha

Encode a 12-bit RGBA image to HEIC with a separate alpha auxiliary image.

encode_yuv

Encode pre-converted planar YCbCr directly, skipping the RGB→YCbCr step.