1
2 #include <cstring>
3 #include <cerrno>
4
5 #include <stdexcept>
6 #include <sys/mman.h>
7 #include <xf86drm.h>
8 #include <xf86drmMode.h>
9
10 #include <kms++/kms++.h>
11
12 using namespace std;
13
14 namespace kms
15 {
ExtFramebuffer(Card & card,uint32_t width,uint32_t height,PixelFormat format,vector<uint32_t> handles,vector<uint32_t> pitches,vector<uint32_t> offsets,vector<uint64_t> modifiers)16 ExtFramebuffer::ExtFramebuffer(Card& card, uint32_t width, uint32_t height, PixelFormat format,
17 vector<uint32_t> handles, vector<uint32_t> pitches, vector<uint32_t> offsets, vector<uint64_t> modifiers)
18 : Framebuffer(card, width, height)
19 {
20 m_format = format;
21
22 const PixelFormatInfo& format_info = get_pixel_format_info(format);
23
24 m_num_planes = format_info.num_planes;
25
26 if (handles.size() != m_num_planes || pitches.size() != m_num_planes || offsets.size() != m_num_planes)
27 throw std::invalid_argument("the size of handles, pitches and offsets has to match number of planes");
28
29 for (int i = 0; i < format_info.num_planes; ++i) {
30 FramebufferPlane& plane = m_planes.at(i);
31
32 plane.handle = handles[i];
33 plane.stride = pitches[i];
34 plane.offset = offsets[i];
35 plane.modifier = modifiers.empty() ? 0 : modifiers[i];
36 plane.size = plane.stride * height;
37 plane.map = 0;
38 }
39
40 uint32_t id;
41 handles.resize(4);
42 pitches.resize(4);
43 offsets.resize(4);
44 int r;
45
46 if (modifiers.empty()) {
47 r = drmModeAddFB2(card.fd(), width, height, (uint32_t)format, handles.data(), pitches.data(), offsets.data(), &id, 0);
48 } else {
49 modifiers.resize(4);
50 r = drmModeAddFB2WithModifiers(card.fd(), width, height, (uint32_t)format, handles.data(), pitches.data(), offsets.data(), modifiers.data(), &id, DRM_MODE_FB_MODIFIERS);
51 }
52
53 if (r)
54 throw std::invalid_argument(string("Failed to create ExtFramebuffer: ") + strerror(r));
55
56 set_id(id);
57 }
58
~ExtFramebuffer()59 ExtFramebuffer::~ExtFramebuffer()
60 {
61 drmModeRmFB(card().fd(), id());
62 }
63
64 } // namespace kms
65