j2k-native 0.7.0

Pure-Rust JPEG 2000 and HTJ2K codec engine for j2k
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137

// SPDX-License-Identifier: MIT OR Apache-2.0

//! Direct single-tile encoding from borrowed precomputed coefficient trees.

use super::super::{
    block_coding_mode, profile, EncodeComponentSampleInfo, EncodeOptions,
    J2kEncodeStageAccelerator, NativeEncodePipelineError, NativeEncodePipelineResult,
    NativeEncodeSession, PrecomputedHtj2k53Image, PrecomputedHtj2k97Image, Vec,
};
use super::finalize::finalize_precomputed_codestream;
use super::plan::{
    build_single_tile_plan, validate_non_pixel_single_tile_request, NonPixelSingleTileRequest,
};
use super::tile_encode::encode_tile_packets;

pub(in crate::j2c::encode) fn encode_precomputed_53_single_tile(
    image: &PrecomputedHtj2k53Image,
    options: &EncodeOptions,
    component_sample_info: &[EncodeComponentSampleInfo],
    session: &NativeEncodeSession<'_>,
    accelerator: &mut impl J2kEncodeStageAccelerator,
) -> NativeEncodePipelineResult<Vec<u8>> {
    let num_components = u16::try_from(image.components.len()).map_err(|_| {
        NativeEncodePipelineError::unsupported("component count exceeds the JPEG 2000 Part 1 limit")
    })?;
    let coding_mode = block_coding_mode(options);
    let validated = validate_non_pixel_single_tile_request(&NonPixelSingleTileRequest {
        width: image.width,
        height: image.height,
        num_components,
        bit_depth: image.bit_depth,
        options,
        block_coding_mode: coding_mode,
        component_sample_info,
        multi_tile_error: "precomputed DWT encode requires a single whole-image tile",
        session,
    })?;
    let profile_enabled = profile::profile_stages_enabled();
    let total_start = profile::profile_now(profile_enabled);
    let plan = build_single_tile_plan(
        validated,
        image.width,
        image.height,
        num_components,
        image.bit_depth,
        image.signed,
        options,
        coding_mode,
        &[],
        component_sample_info,
        session,
    )?;
    let encoded = encode_tile_packets(
        image.width,
        image.height,
        num_components,
        image.bit_depth,
        options,
        component_sample_info,
        &plan,
        &image.components,
        0,
        profile_enabled,
        session,
        accelerator,
    )?;
    let final_plan = plan.into_codestream_final_plan();
    finalize_precomputed_codestream(
        options,
        &final_plan,
        &encoded,
        profile_enabled,
        total_start,
        session,
    )
}

pub(in crate::j2c::encode) fn encode_precomputed_97_single_tile(
    image: &PrecomputedHtj2k97Image,
    options: &EncodeOptions,
    session: &NativeEncodeSession<'_>,
    accelerator: &mut impl J2kEncodeStageAccelerator,
) -> NativeEncodePipelineResult<Vec<u8>> {
    let num_components = u16::try_from(image.components.len()).map_err(|_| {
        NativeEncodePipelineError::unsupported("component count exceeds the JPEG 2000 Part 1 limit")
    })?;
    let coding_mode = block_coding_mode(options);
    let validated = validate_non_pixel_single_tile_request(&NonPixelSingleTileRequest {
        width: image.width,
        height: image.height,
        num_components,
        bit_depth: image.bit_depth,
        options,
        block_coding_mode: coding_mode,
        component_sample_info: &[],
        multi_tile_error: "precomputed DWT encode requires a single whole-image tile",
        session,
    })?;
    let profile_enabled = profile::profile_stages_enabled();
    let total_start = profile::profile_now(profile_enabled);
    let plan = build_single_tile_plan(
        validated,
        image.width,
        image.height,
        num_components,
        image.bit_depth,
        image.signed,
        options,
        coding_mode,
        &[],
        &[],
        session,
    )?;
    let encoded = encode_tile_packets(
        image.width,
        image.height,
        num_components,
        image.bit_depth,
        options,
        &[],
        &plan,
        &image.components,
        0,
        profile_enabled,
        session,
        accelerator,
    )?;
    let final_plan = plan.into_codestream_final_plan();
    finalize_precomputed_codestream(
        options,
        &final_plan,
        &encoded,
        profile_enabled,
        total_start,
        session,
    )
}