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
|
#pragma once
#include <vector>
#include <kms++/framebuffer.h>
#include <kms++util/color16.h>
#include "conv-common.h"
namespace kms
{
/* YUV Planar Packed (only X403 for now) */
struct X403_Layout : FormatLayout <
PlaneLayout<uint32_t,
ComponentLayout<ComponentType::Y, 10, 0>,
ComponentLayout<ComponentType::Y, 10, 10>,
ComponentLayout<ComponentType::Y, 10, 20>,
ComponentLayout<ComponentType::X, 2, 30>>,
PlaneLayout<uint32_t,
ComponentLayout<ComponentType::Cb, 10, 0>,
ComponentLayout<ComponentType::Cb, 10, 10>,
ComponentLayout<ComponentType::Cb, 10, 20>,
ComponentLayout<ComponentType::X, 2, 30>>,
PlaneLayout<uint32_t,
ComponentLayout<ComponentType::Cr, 10, 0>,
ComponentLayout<ComponentType::Cr, 10, 10>,
ComponentLayout<ComponentType::Cr, 10, 20>,
ComponentLayout<ComponentType::X, 2, 30>>
>
{
static constexpr size_t y_plane = 0;
static constexpr size_t cb_plane = 1;
static constexpr size_t cr_plane = 2;
};
template<typename Format>
class YUVPlanarPackedWriter
{
using YLayout = Format::template plane<Format::y_plane>;
using CbLayout = Format::template plane<Format::cb_plane>;
using CrLayout = Format::template plane<Format::cr_plane>;
using TY = typename YLayout::storage_type;
using TCb = typename CbLayout::storage_type;
using TCr = typename CrLayout::storage_type;
static constexpr size_t pixels_in_group = 3;
// Helper to extract the correct component based on component type
template<ComponentType CType>
static uint16_t extract_component(const YUV16& pixel)
{
if constexpr (CType == ComponentType::Y)
return pixel.y;
else if constexpr (CType == ComponentType::Cb)
return pixel.u;
else if constexpr (CType == ComponentType::Cr)
return pixel.v;
else
return 0; // For padding or other component types
}
public:
static void write_pattern(IFramebuffer& fb, size_t start_y, size_t end_y,
auto&& generate_line)
{
// Line buffers
std::vector<YUV16> linebuf(fb.width());
// Views to all planes
auto y_buf = make_strided_fb_view<TY>(fb.map(Format::y_plane),
fb.height(), fb.width(),
fb.stride(Format::y_plane));
auto cb_buf = make_strided_fb_view<TCb>(fb.map(Format::cb_plane),
fb.height(), fb.width(),
fb.stride(Format::cb_plane));
auto cr_buf = make_strided_fb_view<TCr>(fb.map(Format::cr_plane),
fb.height(), fb.width(),
fb.stride(Format::cr_plane));
for (size_t y_src = start_y; y_src <= end_y; y_src++) {
generate_line(y_src, linebuf);
write_samples<YLayout, ComponentType::Y>(md::submdspan(y_buf, y_src, md::full_extent), linebuf, fb.width());
write_samples<CbLayout, ComponentType::Cb>(md::submdspan(cb_buf, y_src, md::full_extent), linebuf, fb.width());
write_samples<CrLayout, ComponentType::Cr>(md::submdspan(cr_buf, y_src, md::full_extent), linebuf, fb.width());
}
}
private:
template<typename Plane, ComponentType CType, typename Buf>
static void write_samples(Buf&& view, auto&& linebuf, size_t num_pixels)
{
for (size_t x_src = 0; x_src < num_pixels; x_src += pixels_in_group) {
auto x_dst = x_src / pixels_in_group;
write_group<Plane, CType>(view, linebuf, x_src, x_dst,
std::make_index_sequence<pixels_in_group>{});
}
}
template<typename Plane, ComponentType CType, typename YBuf, size_t... I>
static void write_group(YBuf&& view, auto&& linebuf, size_t x_src,
size_t x_dst, std::index_sequence<I...>)
{
std::array<component_storage_type, Plane::num_components> values{
static_cast<component_storage_type>(
(extract_component<CType>(linebuf[x_src + I]) >>
(16 - Plane::template component_size<I>)))...
};
// Set padding bits to 0
if constexpr (Plane::template component_count<ComponentType::X>())
values[Plane::template find_pos<ComponentType::X>()] = 0;
view[x_dst] = Plane::pack(values);
}
};
} // namespace kms
|
