libkms++/connector.cpp

   1 #include <stdio.h>
   2 #include <iostream>
   3 #include <unistd.h>
   4 #include <fcntl.h>
   5 #include <cassert>
   6
   7 #include "kms++.h"
   8 #include "helpers.h"
   9
  10 using namespace std;
  11
  12 #define DEF_CONN(c) [DRM_MODE_CONNECTOR_##c] = #c
  13
  14 namespace kms
  15 {
  16
  17 static const char * connector_names[] = {
  18         DEF_CONN(Unknown),
  19         DEF_CONN(VGA),
  20         DEF_CONN(DVII),
  21         DEF_CONN(DVID),
  22         DEF_CONN(DVIA),
  23         DEF_CONN(Composite),
  24         DEF_CONN(SVIDEO),
  25         DEF_CONN(LVDS),
  26         DEF_CONN(Component),
  27         DEF_CONN(9PinDIN),
  28         DEF_CONN(DisplayPort),
  29         DEF_CONN(HDMIA),
  30         DEF_CONN(HDMIB),
  31         DEF_CONN(TV),
  32         DEF_CONN(eDP),
  33         DEF_CONN(VIRTUAL),
  34         DEF_CONN(DSI),
  35 };
  36
  37 static const char *connection_str[] = {
  38         [0] = "<unknown>",
  39         [DRM_MODE_CONNECTED] = "Connected",
  40         [DRM_MODE_DISCONNECTED] = "Disconnected",
  41         [DRM_MODE_UNKNOWNCONNECTION] = "Unknown",
  42 };
  43
  44 struct ConnectorPriv
  45 {
  46         drmModeConnectorPtr drm_connector;
  47 };
  48
  49 Connector::Connector(Card &card, uint32_t id, uint32_t idx)
  50         :DrmObject(card, id, DRM_MODE_OBJECT_CONNECTOR, idx)
  51 {
  52         m_priv = new ConnectorPriv();
  53
  54         m_priv->drm_connector = drmModeGetConnector(this->card().fd(), this->id());
  55         assert(m_priv->drm_connector);
  56
  57         auto name = connector_names[m_priv->drm_connector->connector_type];
  58         m_fullname = std::string(string(name) + std::to_string(m_priv->drm_connector->connector_type_id));
  59 }
  60
  61
  62 Connector::~Connector()
  63 {
  64         drmModeFreeConnector(m_priv->drm_connector);
  65         delete m_priv;
  66 }
  67
  68 void Connector::setup()
  69 {
  70         if (m_priv->drm_connector->encoder_id != 0) {
  71                 auto enc = card().get_encoder(m_priv->drm_connector->encoder_id);
  72                 if (enc)
  73                         m_current_crtc = enc->get_crtc();
  74         }
  75
  76         m_saved_crtc = m_current_crtc;
  77 }
  78
  79 void Connector::restore_mode()
  80 {
  81         if (m_saved_crtc)
  82                 m_saved_crtc->restore_mode(this);
  83 }
  84
  85 void Connector::print_short() const
  86 {
  87         auto c = m_priv->drm_connector;
  88
  89         printf("Connector %d, %s, %dx%dmm, %s\n", id(), m_fullname.c_str(),
  90                c->mmWidth, c->mmHeight, connection_str[c->connection]);
  91 }
  92
  93 Videomode Connector::get_default_mode() const
  94 {
  95         drmModeModeInfo drmmode = m_priv->drm_connector->modes[0];
  96
  97         return drm_mode_to_video_mode(drmmode);
  98 }
  99
 100 Videomode Connector::get_mode(const string& mode) const
 101 {
 102         auto c = m_priv->drm_connector;
 103
 104         for (int i = 0; i < c->count_modes; i++)
 105                 if (mode == c->modes[i].name)
 106                         return drm_mode_to_video_mode(c->modes[i]);
 107
 108         throw invalid_argument(mode + ": mode not found");
 109 }
 110
 111 bool Connector::connected() const
 112 {
 113         return m_priv->drm_connector->connection == DRM_MODE_CONNECTED;
 114 }
 115
 116 vector<Crtc*> Connector::get_possible_crtcs() const
 117 {
 118         vector<Crtc*> crtcs;
 119
 120         for (int i = 0; i < m_priv->drm_connector->count_encoders; ++i) {
 121                 auto enc = card().get_encoder(m_priv->drm_connector->encoders[i]);
 122
 123                 auto l = enc->get_possible_crtcs();
 124
 125                 crtcs.insert(crtcs.end(), l.begin(), l.end());
 126         }
 127
 128         return crtcs;
 129 }
 130 }