Struct AVFilmGrainH274Params

#[repr(C)]
pub struct AVFilmGrainH274Params {Show 15 fields
    pub model_id: i32,
    pub bit_depth_luma: i32,
    pub bit_depth_chroma: i32,
    pub color_range: u32,
    pub color_primaries: u32,
    pub color_trc: u32,
    pub color_space: u32,
    pub blending_mode_id: i32,
    pub log2_scale_factor: i32,
    pub component_model_present: [i32; 3],
    pub num_intensity_intervals: [u16; 3],
    pub num_model_values: [u8; 3],
    pub intensity_interval_lower_bound: [[u8; 256]; 3],
    pub intensity_interval_upper_bound: [[u8; 256]; 3],
    pub comp_model_value: [[[i16; 6]; 256]; 3],
}

Expand description

This structure describes how to handle film grain synthesis for codecs using the ITU-T H.274 Versatile suplemental enhancement information message.

@note The struct must be allocated as part of AVFilmGrainParams using av_film_grain_params_alloc(). Its size is not a part of the public ABI.

Fields§

§model_id: i32

Specifies the film grain simulation mode. 0 = Frequency filtering, 1 = Auto-regression

§bit_depth_luma: i32

Specifies the bit depth used for the luma component.

@deprecated use AVFilmGrainParams.bit_depth_luma.

§bit_depth_chroma: i32

Specifies the bit depth used for the chroma components.

@deprecated use AVFilmGrainParams.bit_depth_chroma.

§color_range: u32

Specifies the video signal characteristics.

@deprecated use AVFilmGrainParams.color_{range,primaries,trc,space}.

§color_primaries: u32§color_trc: u32§color_space: u32§blending_mode_id: i32

Specifies the blending mode used to blend the simulated film grain with the decoded images.

0 = Additive, 1 = Multiplicative

§log2_scale_factor: i32

Specifies a scale factor used in the film grain characterization equations.

§component_model_present: [i32; 3]

Indicates if the modelling of film grain for a given component is present.

§num_intensity_intervals: [u16; 3]

Specifies the number of intensity intervals for which a specific set of model values has been estimated, with a range of [1, 256].

§num_model_values: [u8; 3]

Specifies the number of model values present for each intensity interval in which the film grain has been modelled, with a range of [1, 6].

§intensity_interval_lower_bound: [[u8; 256]; 3]

Specifies the lower ounds of each intensity interval for whichthe set of model values applies for the component.

§intensity_interval_upper_bound: [[u8; 256]; 3]

Specifies the upper bound of each intensity interval for which the set of model values applies for the component.

§comp_model_value: [[[i16; 6]; 256]; 3]

Specifies the model values for the component for each intensity interval.

When model_id == 0, the following applies: For comp_model_value[y], the range of values is [0, 2^bit_depth_luma - 1] For comp_model_value[cb..cr], the range of values is [0, 2^bit_depth_chroma - 1]
Otherwise, the following applies: For comp_model_value[y], the range of values is [-2^(bit_depth_luma - 1), 2^(bit_depth_luma - 1) - 1] For comp_model_value[cb..cr], the range of values is [-2^(bit_depth_chroma - 1), 2^(bit_depth_chroma - 1) - 1]