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#include <cstring>
#include <cerrno>
#include <stdexcept>
#include <sys/mman.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <kms++/kms++.h>
using namespace std;
namespace kms
{
ExtFramebuffer::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)
: Framebuffer(card, width, height)
{
m_format = format;
const PixelFormatInfo& format_info = get_pixel_format_info(format);
m_num_planes = format_info.num_planes;
if (handles.size() != m_num_planes || pitches.size() != m_num_planes || offsets.size() != m_num_planes)
throw std::invalid_argument("the size of handles, pitches and offsets has to match number of planes");
for (int i = 0; i < format_info.num_planes; ++i) {
FramebufferPlane& plane = m_planes.at(i);
plane.handle = handles[i];
plane.stride = pitches[i];
plane.offset = offsets[i];
plane.modifier = modifiers.empty() ? 0 : modifiers[i];
plane.size = plane.stride * height;
plane.map = 0;
}
uint32_t id;
handles.resize(4);
pitches.resize(4);
offsets.resize(4);
int r;
if (modifiers.empty()) {
r = drmModeAddFB2(card.fd(), width, height, (uint32_t)format, handles.data(), pitches.data(), offsets.data(), &id, 0);
}
else {
modifiers.resize(4);
r = drmModeAddFB2WithModifiers(card.fd(), width, height, (uint32_t)format, handles.data(), pitches.data(), offsets.data(), modifiers.data(), &id, DRM_MODE_FB_MODIFIERS);
}
if (r)
throw std::invalid_argument(string("Failed to create ExtFramebuffer: ") + strerror(r));
set_id(id);
}
ExtFramebuffer::~ExtFramebuffer()
{
drmModeRmFB(card().fd(), id());
}
}
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