j2k-cuda 0.11.1

CUDA adapter for resident HTJ2K decode/encode and shared JPEG 2000 stages
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

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

use j2k_native::{
    HtCodeBlockPayloadRanges, HtOwnedCodeBlockBatchJob, HtOwnedSubBandPlan,
    J2kClassicCodeBlockPayload, J2kCodeBlockSegment, J2kCodeBlockStyle, J2kCodestreamRange,
    J2kDirectGrayscalePlan, J2kDirectGrayscaleStep, J2kOwnedCodeBlockBatchJob, J2kOwnedSubBandPlan,
    J2kRect, J2kSubBandType,
};

use super::*;

fn rect() -> J2kRect {
    J2kRect {
        x0: 0,
        y0: 0,
        x1: 1,
        y1: 1,
    }
}

fn referenced_mixed_plan() -> J2kDirectGrayscalePlan {
    J2kDirectGrayscalePlan {
        dimensions: (1, 1),
        bit_depth: 8,
        steps: vec![
            J2kDirectGrayscaleStep::HtSubBand(HtOwnedSubBandPlan {
                band_id: 0,
                rect: rect(),
                width: 1,
                height: 1,
                irreversible_midpoint: false,
                jobs: vec![HtOwnedCodeBlockBatchJob {
                    output_x: 0,
                    output_y: 0,
                    data: Vec::new(),
                    cleanup_length: 1,
                    refinement_length: 0,
                    width: 1,
                    height: 1,
                    output_stride: 1,
                    missing_bit_planes: 7,
                    number_of_coding_passes: 1,
                    num_bitplanes: 8,
                    roi_shift: 0,
                    stripe_causal: false,
                    strict: true,
                    dequantization_step: 1.0,
                }],
            }),
            J2kDirectGrayscaleStep::ClassicSubBand(J2kOwnedSubBandPlan {
                band_id: 1,
                rect: rect(),
                width: 1,
                height: 1,
                irreversible_midpoint: false,
                jobs: vec![J2kOwnedCodeBlockBatchJob {
                    output_x: 0,
                    output_y: 0,
                    data: Vec::new(),
                    segments: vec![J2kCodeBlockSegment {
                        data_offset: 0,
                        data_length: 1,
                        start_coding_pass: 0,
                        end_coding_pass: 1,
                        use_arithmetic: true,
                    }],
                    width: 1,
                    height: 1,
                    output_stride: 1,
                    missing_bit_planes: 7,
                    number_of_coding_passes: 1,
                    total_bitplanes: 8,
                    roi_shift: 0,
                    sub_band_type: J2kSubBandType::LowLow,
                    style: J2kCodeBlockStyle {
                        selective_arithmetic_coding_bypass: false,
                        reset_context_probabilities: false,
                        termination_on_each_pass: false,
                        vertically_causal_context: false,
                        segmentation_symbols: false,
                    },
                    strict: true,
                    dequantization_step: 1.0,
                }],
            }),
        ],
    }
}

#[test]
fn referenced_htj2k_tile_accepts_observed_classic_and_ht_steps() {
    let encoded = [0xAA, 0xBB];
    let ht_payloads = [HtCodeBlockPayloadRanges {
        cleanup: J2kCodestreamRange {
            offset: 0,
            length: 1,
        },
        refinement: None,
    }];
    let classic_payloads = [J2kClassicCodeBlockPayload {
        first_range: 0,
        range_count: 1,
        combined_length: 1,
    }];
    let classic_ranges = [J2kCodestreamRange {
        offset: 1,
        length: 1,
    }];
    let mut shared_payload = Vec::new();
    let mut budget = HostPhaseBudget::new("mixed referenced CUDA plan test");

    let plan = CudaHtj2kDecodePlan::from_referenced_tile_grayscale_plan_into_shared(
        &referenced_mixed_plan(),
        &ht_payloads,
        &classic_payloads,
        &classic_ranges,
        &encoded,
        PixelFormat::Gray8,
        (0, 0),
        (1, 1),
        &mut shared_payload,
        &mut budget,
    )
    .expect("mixed referenced HTJ2K tile must retain both entropy coders");

    assert_eq!(shared_payload, encoded);
    assert_eq!(plan.code_blocks().len(), 1);
    assert_eq!(plan.classic_code_blocks().len(), 1);
    assert_eq!(plan.code_blocks()[0].payload_offset, 0);
    assert_eq!(plan.classic_code_blocks()[0].payload_offset, 1);
}