git.sesse.net Git - casparcg/blob - core/frame/gpu_frame.cpp

   1 #include "../StdAfx.h"\r
   2 \r
   3 #include "gpu_frame.h"\r
   4 #include "../../common/utility/memory.h"\r
   5 #include "../../common/gl/gl_check.h"\r
   6 #include "../../common/gl/pixel_buffer_object.h"\r
   7 \r
   8 namespace caspar { namespace core {\r
   9         \r
  10 GLubyte progressive_pattern[] = {\r
  11         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  12         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  13         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  14         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  15         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  16         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  17         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  18         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  19         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  20         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  21         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  22         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  23         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  24         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  25         0xff, 0xff, 0xFF, 0xff, 0xff, 0xff, 0xff, 0xff,\r
  26         0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};\r
  27         \r
  28 GLubyte upper_pattern[] = {\r
  29         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  30         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  31         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  32         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  33         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  34         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  35         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  36         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  37         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  38         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  39         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  40         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  41         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  42         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  43         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  44         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00};\r
  45                 \r
  46 GLubyte lower_pattern[] = {\r
  47                                                         0x00, 0x00, 0x00, 0x00,\r
  48         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  49         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  50         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  51         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  52         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  53         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  54         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  55         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  56         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  57         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  58         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  59         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  60         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  61         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  62         0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00,\r
  63         0xff, 0xff, 0xff, 0xff};\r
  64                                                                                                                                                                                                                                                                                                                 \r
  65 struct gpu_frame::implementation : boost::noncopyable\r
  66 {\r
  67         implementation(size_t width, size_t height) \r
  68                 : pbo_(width, height), data_(nullptr), width_(width), height_(height), \r
  69                         size_(width*height*4), reading_(false), alpha_(1.0f), \r
  70                         x_(0.0f), y_(0.0f), mode_(video_mode::progressive), \r
  71                         texcoords_(0.0, 1.0, 1.0, 0.0), writing_(false), mapped_(false)\r
  72         {       \r
  73                 if(width > 0 && height > 0)\r
  74                         end_write();\r
  75         }\r
  76         \r
  77         void begin_write()\r
  78         {\r
  79                 data_ = nullptr;\r
  80                 pbo_.begin_write();             \r
  81         }\r
  82 \r
  83         void end_write()\r
  84         {\r
  85                 data_ = static_cast<unsigned char*>(pbo_.end_write());\r
  86         }\r
  87         \r
  88         void begin_read()\r
  89         {       \r
  90                 data_ = nullptr;\r
  91                 pbo_.begin_read();\r
  92         }\r
  93 \r
  94         void end_read()\r
  95         {\r
  96                 data_ = static_cast<unsigned char*>(pbo_.end_read());\r
  97         }\r
  98 \r
  99         void draw()\r
 100         {\r
 101                 glPushMatrix();\r
 102                 glTranslated(x_*2.0, y_*2.0, 0.0);\r
 103                 glColor4d(1.0, 1.0, 1.0, alpha_);\r
 104 \r
 105                 if(mode_ == video_mode::progressive)\r
 106                         glPolygonStipple(progressive_pattern);\r
 107                 else if(mode_ == video_mode::upper)\r
 108                         glPolygonStipple(upper_pattern);\r
 109                 else if(mode_ == video_mode::lower)\r
 110                         glPolygonStipple(lower_pattern);\r
 111 \r
 112                 pbo_.bind_texture();\r
 113                 glBegin(GL_QUADS);\r
 114                         glTexCoord2d(texcoords_.left,   texcoords_.bottom); glVertex2d(-1.0, -1.0);\r
 115                         glTexCoord2d(texcoords_.right,  texcoords_.bottom); glVertex2d( 1.0, -1.0);\r
 116                         glTexCoord2d(texcoords_.right,  texcoords_.top);        glVertex2d( 1.0,  1.0);\r
 117                         glTexCoord2d(texcoords_.left,   texcoords_.top);        glVertex2d(-1.0,  1.0);\r
 118                 glEnd();\r
 119                 glPopMatrix();\r
 120         }\r
 121                 \r
 122         unsigned char* data()\r
 123         {\r
 124                 if(data_ == nullptr)\r
 125                         BOOST_THROW_EXCEPTION(invalid_operation());\r
 126                 return data_;\r
 127         }\r
 128 \r
 129         void reset()\r
 130         {\r
 131                 audio_data_.clear();\r
 132                 alpha_     = 1.0f;\r
 133                 x_         = 0.0f;\r
 134                 y_         = 0.0f;\r
 135                 texcoords_ = rectangle(0.0, 1.0, 1.0, 0.0);\r
 136                 mode_      = video_mode::progressive;\r
 137         }\r
 138 \r
 139         common::gl::pixel_buffer_object pbo_;\r
 140         gpu_frame* self_;\r
 141         unsigned char* data_;\r
 142         size_t width_;\r
 143         size_t height_;\r
 144         size_t size_;\r
 145 \r
 146         bool reading_;\r
 147         bool writing_;\r
 148         bool mapped_;\r
 149 \r
 150         std::vector<short> audio_data_;\r
 151 \r
 152         double alpha_;\r
 153         double x_;\r
 154         double y_;\r
 155         video_mode mode_;\r
 156         rectangle texcoords_;\r
 157 };\r
 158 \r
 159 gpu_frame::gpu_frame(size_t width, size_t height) \r
 160         : impl_(new implementation(width, height)){}\r
 161 void gpu_frame::begin_write(){impl_->begin_write();}\r
 162 void gpu_frame::end_write(){impl_->end_write();}        \r
 163 void gpu_frame::begin_read(){impl_->begin_read();}\r
 164 void gpu_frame::end_read(){impl_->end_read();}\r
 165 void gpu_frame::draw(){impl_->draw();}\r
 166 unsigned char* gpu_frame::data(){return impl_->data();}\r
 167 size_t gpu_frame::size() const { return impl_->size_; }\r
 168 size_t gpu_frame::width() const { return impl_->width_;}\r
 169 size_t gpu_frame::height() const { return impl_->height_;}\r
 170 const std::vector<short>& gpu_frame::audio_data() const{return impl_->audio_data_;}     \r
 171 std::vector<short>& gpu_frame::audio_data() { return impl_->audio_data_; }\r
 172 void gpu_frame::reset(){impl_->reset();}\r
 173 double gpu_frame::alpha() const{ return impl_->alpha_;}\r
 174 void gpu_frame::alpha(double value){ impl_->alpha_ = value;}\r
 175 double gpu_frame::x() const { return impl_->x_;}\r
 176 double gpu_frame::y() const { return impl_->y_;}\r
 177 void gpu_frame::translate(double x, double y) { impl_->x_ += x; impl_->y_ += y; }\r
 178 void gpu_frame::texcoords(const rectangle& texcoords){impl_->texcoords_ = texcoords;}\r
 179 void gpu_frame::mode(video_mode mode){ impl_->mode_ = mode;}\r
 180 video_mode gpu_frame::mode() const{ return impl_->mode_;}\r
 181 }}