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#include <xf86drm.h>
#include <xf86drmMode.h>
#include <cmath>
#include <sstream>
#include <kms++/format.h>
#include <kms++/kms++.h>
#include "helpers.h"
using namespace std;
namespace kms
{
bool Videomode::valid() const
{
return !!clock;
}
unique_ptr<Blob> Videomode::to_blob(Card& card) const
{
drmModeModeInfo drm_mode = video_mode_to_drm_mode(*this);
return unique_ptr<Blob>(new Blob(card, &drm_mode, sizeof(drm_mode)));
}
float Videomode::calculated_vrefresh() const
{
// XXX interlace should only halve visible vertical lines, not blanking
float refresh = (clock * 1000.0) / (htotal * vtotal) * (interlace() ? 2 : 1);
return roundf(refresh * 100.0) / 100.0;
}
bool Videomode::interlace() const
{
return flags & DRM_MODE_FLAG_INTERLACE;
}
SyncPolarity Videomode::hsync() const
{
if (flags & DRM_MODE_FLAG_PHSYNC)
return SyncPolarity::Positive;
if (flags & DRM_MODE_FLAG_NHSYNC)
return SyncPolarity::Negative;
return SyncPolarity::Undefined;
}
SyncPolarity Videomode::vsync() const
{
if (flags & DRM_MODE_FLAG_PVSYNC)
return SyncPolarity::Positive;
if (flags & DRM_MODE_FLAG_NVSYNC)
return SyncPolarity::Negative;
return SyncPolarity::Undefined;
}
void Videomode::set_interlace(bool ilace)
{
if (ilace)
flags |= DRM_MODE_FLAG_INTERLACE;
else
flags &= ~DRM_MODE_FLAG_INTERLACE;
}
void Videomode::set_hsync(SyncPolarity pol)
{
flags &= ~(DRM_MODE_FLAG_PHSYNC | DRM_MODE_FLAG_NHSYNC);
switch (pol) {
case SyncPolarity::Positive:
flags |= DRM_MODE_FLAG_PHSYNC;
break;
case SyncPolarity::Negative:
flags |= DRM_MODE_FLAG_NHSYNC;
break;
default:
break;
}
}
void Videomode::set_vsync(SyncPolarity pol)
{
flags &= ~(DRM_MODE_FLAG_PVSYNC | DRM_MODE_FLAG_NVSYNC);
switch (pol) {
case SyncPolarity::Positive:
flags |= DRM_MODE_FLAG_PVSYNC;
break;
case SyncPolarity::Negative:
flags |= DRM_MODE_FLAG_NVSYNC;
break;
default:
break;
}
}
string Videomode::to_string_short() const
{
return fmt::format("{}x{}{}@{:.2f}", hdisplay, vdisplay, interlace() ? "i" : "", calculated_vrefresh());
}
static char sync_to_char(SyncPolarity pol)
{
switch (pol) {
case SyncPolarity::Positive:
return '+';
case SyncPolarity::Negative:
return '-';
default:
return '?';
}
}
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
template<typename T>
std::string join(const T& values, const std::string& delim)
{
std::ostringstream ss;
for (const auto& v : values) {
if (&v != &values[0])
ss << delim;
ss << v;
}
return ss.str();
}
static const map<int, string> mode_type_map = {
// the deprecated ones don't care about a short name
{ DRM_MODE_TYPE_BUILTIN, "builtin" }, // deprecated
{ DRM_MODE_TYPE_CLOCK_C, "clock_c" }, // deprecated
{ DRM_MODE_TYPE_CRTC_C, "crtc_c" }, // deprecated
{ DRM_MODE_TYPE_PREFERRED, "P" },
{ DRM_MODE_TYPE_DEFAULT, "default" }, // deprecated
{ DRM_MODE_TYPE_USERDEF, "U" },
{ DRM_MODE_TYPE_DRIVER, "D" },
};
static const map<int, string> mode_flag_map = {
// the first 5 flags are displayed elsewhere
{ DRM_MODE_FLAG_PHSYNC, "" },
{ DRM_MODE_FLAG_NHSYNC, "" },
{ DRM_MODE_FLAG_PVSYNC, "" },
{ DRM_MODE_FLAG_NVSYNC, "" },
{ DRM_MODE_FLAG_INTERLACE, "" },
{ DRM_MODE_FLAG_DBLSCAN, "dblscan" },
{ DRM_MODE_FLAG_CSYNC, "csync" },
{ DRM_MODE_FLAG_PCSYNC, "pcsync" },
{ DRM_MODE_FLAG_NCSYNC, "ncsync" },
{ DRM_MODE_FLAG_HSKEW, "hskew" },
{ DRM_MODE_FLAG_BCAST, "bcast" }, // deprecated
{ DRM_MODE_FLAG_PIXMUX, "pixmux" }, // deprecated
{ DRM_MODE_FLAG_DBLCLK, "2x" },
{ DRM_MODE_FLAG_CLKDIV2, "clkdiv2" },
};
static const map<int, string> mode_3d_map = {
{ DRM_MODE_FLAG_3D_NONE, "" },
{ DRM_MODE_FLAG_3D_FRAME_PACKING, "3dfp" },
{ DRM_MODE_FLAG_3D_FIELD_ALTERNATIVE, "3dfa" },
{ DRM_MODE_FLAG_3D_LINE_ALTERNATIVE, "3dla" },
{ DRM_MODE_FLAG_3D_SIDE_BY_SIDE_FULL, "3dsbs" },
{ DRM_MODE_FLAG_3D_L_DEPTH, "3dldepth" },
{ DRM_MODE_FLAG_3D_L_DEPTH_GFX_GFX_DEPTH, "3dgfx" },
{ DRM_MODE_FLAG_3D_TOP_AND_BOTTOM, "3dtab" },
{ DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF, "3dsbs" },
};
static const map<int, string> mode_aspect_map = {
{ DRM_MODE_FLAG_PIC_AR_NONE, "" },
{ DRM_MODE_FLAG_PIC_AR_4_3, "4:3" },
{ DRM_MODE_FLAG_PIC_AR_16_9, "16:9" },
{ DRM_MODE_FLAG_PIC_AR_64_27, "64:27" },
{ DRM_MODE_FLAG_PIC_AR_256_135, "256:135" },
};
static string mode_type_str(uint32_t val)
{
vector<string> s;
for (const auto& [k, v] : mode_type_map) {
if (val & k) {
if (!v.empty())
s.push_back(v);
val &= ~k;
}
}
// any unknown bits
if (val != 0)
s.push_back(fmt::format("{:#x}", val));
return join(s, "|");
}
static string mode_flag_str(uint32_t val)
{
vector<string> s;
for (const auto& [k, v] : mode_flag_map) {
if (val & k) {
if (!v.empty())
s.push_back(v);
val &= ~k;
}
}
auto it = mode_3d_map.find(val & DRM_MODE_FLAG_3D_MASK);
if (it != mode_3d_map.end()) {
if (!it->second.empty())
s.push_back(it->second);
val &= ~DRM_MODE_FLAG_3D_MASK;
}
it = mode_aspect_map.find(val & DRM_MODE_FLAG_PIC_AR_MASK);
if (it != mode_aspect_map.end()) {
if (!it->second.empty())
s.push_back(it->second);
val &= ~DRM_MODE_FLAG_PIC_AR_MASK;
}
// any unknown bits
if (val != 0)
s.push_back(fmt::format("{:#x}", val));
return join(s, "|");
}
string Videomode::to_string_long() const
{
string h = fmt::format("{}/{}/{}/{}/{}", hdisplay, hfp(), hsw(), hbp(), sync_to_char(hsync()));
string v = fmt::format("{}/{}/{}/{}/{}", vdisplay, vfp(), vsw(), vbp(), sync_to_char(vsync()));
string str = fmt::format("{} {:.3f} {} {} {} ({:.2f}) {} {}",
to_string_short(),
clock / 1000.0,
h, v,
vrefresh, calculated_vrefresh(),
mode_type_str(type),
mode_flag_str(flags));
return str;
}
string Videomode::to_string_long_padded() const
{
string h = fmt::format("{}/{}/{}/{}/{}", hdisplay, hfp(), hsw(), hbp(), sync_to_char(hsync()));
string v = fmt::format("{}/{}/{}/{}/{}", vdisplay, vfp(), vsw(), vbp(), sync_to_char(vsync()));
string str = fmt::format("{:<16} {:7.3f} {:<18} {:<18} {:2} ({:.2f}) {:<5} {}",
to_string_short(),
clock / 1000.0,
h, v,
vrefresh, calculated_vrefresh(),
mode_type_str(type),
mode_flag_str(flags));
return str;
}
Videomode videomode_from_timings(uint32_t clock_khz,
uint16_t hact, uint16_t hfp, uint16_t hsw, uint16_t hbp,
uint16_t vact, uint16_t vfp, uint16_t vsw, uint16_t vbp)
{
Videomode m{};
m.clock = clock_khz;
m.hdisplay = hact;
m.hsync_start = hact + hfp;
m.hsync_end = hact + hfp + hsw;
m.htotal = hact + hfp + hsw + hbp;
m.vdisplay = vact;
m.vsync_start = vact + vfp;
m.vsync_end = vact + vfp + vsw;
m.vtotal = vact + vfp + vsw + vbp;
return m;
}
} // namespace kms
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