Struct mozjpeg::CompInfo
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#[repr(C)]pub struct CompInfo { pub component_id: i32, pub component_index: i32, pub h_samp_factor: i32, pub v_samp_factor: i32, pub quant_tbl_no: i32, pub dc_tbl_no: i32, pub ac_tbl_no: i32, pub width_in_blocks: u32, pub height_in_blocks: u32, pub quant_table: *mut JQUANT_TBL, // some fields omitted }
Fields
component_id: i32
identifier for this component (0..255)
component_index: i32
its index in SOF or cinfo->comp_info[]
h_samp_factor: i32
horizontal sampling factor (1..4)
v_samp_factor: i32
vertical sampling factor (1..4)
quant_tbl_no: i32
quantization table selector (0..3)
dc_tbl_no: i32
DC entropy table selector (0..3)
These values may vary between scans. For compression, they must be supplied by parameter setup; for decompression, they are read from the SOS marker. The decompressor output side may not use these variables.
ac_tbl_no: i32
AC entropy table selector (0..3)
width_in_blocks: u32
height_in_blocks: u32
quant_table: *mut JQUANT_TBL
Trait Implementations
impl Default for jpeg_component_info
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fn default() -> jpeg_component_info
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Returns the "default value" for a type. Read more
impl CompInfoExt for CompInfo
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fn qtable(&self) -> Option<QTable>
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fn sampling(&self) -> (u8, u8)
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h,v samplinig (1..4). Number of pixels per sample (may be opposite of what you expect!)
fn row_stride(&self) -> usize
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Number of pixels per row, including padding to MCU
fn col_stride(&self) -> usize
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Total height, including padding to MCU