src/gallium/auxiliary/vl/vl_compositor.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2009 Younes Manton.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #ifndef vl_compositor_h
  29 #define vl_compositor_h
  30
  31 #include "pipe/p_state.h"
  32 #include "pipe/p_video_decoder.h"
  33 #include "pipe/p_video_state.h"
  34
  35 #include "vl_types.h"
  36
  37 struct pipe_context;
  38
  39 /**
  40  * composing and displaying of image data
  41  */
  42
  43 #define VL_COMPOSITOR_MAX_LAYERS 16
  44
  45 struct vl_compositor_layer
  46 {
  47    bool clearing;
  48
  49    void *fs;
  50    void *samplers[3];
  51    void *blend;
  52
  53    struct pipe_sampler_view *sampler_views[3];
  54    struct {
  55       struct vertex2f tl, br;
  56    } src, dst;
  57 };
  58
  59 struct vl_compositor
  60 {
  61    struct pipe_context *pipe;
  62
  63    struct pipe_framebuffer_state fb_state;
  64    struct pipe_viewport_state viewport;
  65    struct pipe_vertex_buffer vertex_buf;
  66    struct pipe_resource *csc_matrix;
  67
  68    void *sampler_linear;
  69    void *sampler_nearest;
  70    void *blend_clear, *blend_add;
  71    void *rast;
  72    void *dsa;
  73    void *vertex_elems_state;
  74
  75    void *vs;
  76    void *fs_video_buffer;
  77    void *fs_rgba;
  78
  79    struct {
  80       void *rgb;
  81       void *yuv;
  82    } fs_palette;
  83
  84    union pipe_color_union clear_color;
  85    struct vertex2f dirty_tl, dirty_br;
  86
  87    unsigned used_layers:VL_COMPOSITOR_MAX_LAYERS;
  88    struct vl_compositor_layer layers[VL_COMPOSITOR_MAX_LAYERS];
  89 };
  90
  91 /**
  92  * initialize this compositor
  93  */
  94 bool
  95 vl_compositor_init(struct vl_compositor *compositor, struct pipe_context *pipe);
  96
  97 /**
  98  * set yuv -> rgba conversion matrix
  99  */
 100 void
 101 vl_compositor_set_csc_matrix(struct vl_compositor *compositor, const float mat[16]);
 102
 103 /**
 104  * reset dirty area, so it's cleared with the clear colour
 105  */
 106 void
 107 vl_compositor_reset_dirty_area(struct vl_compositor *compositor);
 108
 109 /**
 110  * set the clear color
 111  */
 112 void
 113 vl_compositor_set_clear_color(struct vl_compositor *compositor, union pipe_color_union *color);
 114
 115 /**
 116  * get the clear color
 117  */
 118 void
 119 vl_compositor_get_clear_color(struct vl_compositor *compositor, union pipe_color_union *color);
 120
 121 /**
 122  * set overlay samplers
 123  */
 124 /*@{*/
 125
 126 /**
 127  * reset all currently set layers
 128  */
 129 void
 130 vl_compositor_clear_layers(struct vl_compositor *compositor);
 131
 132 /**
 133  * set the blender used to render a layer
 134  */
 135 void
 136 vl_compositor_set_layer_blend(struct vl_compositor *compositor,
 137                               unsigned layer, void *blend, bool is_clearing);
 138
 139 /**
 140  * set a video buffer as a layer to render
 141  */
 142 void
 143 vl_compositor_set_buffer_layer(struct vl_compositor *compositor,
 144                                unsigned layer,
 145                                struct pipe_video_buffer *buffer,
 146                                struct pipe_video_rect *src_rect,
 147                                struct pipe_video_rect *dst_rect);
 148
 149 /**
 150  * set a paletted sampler as a layer to render
 151  */
 152 void
 153 vl_compositor_set_palette_layer(struct vl_compositor *compositor,
 154                                 unsigned layer,
 155                                 struct pipe_sampler_view *indexes,
 156                                 struct pipe_sampler_view *palette,
 157                                 struct pipe_video_rect *src_rect,
 158                                 struct pipe_video_rect *dst_rect,
 159                                 bool include_color_conversion);
 160
 161 /**
 162  * set a rgba sampler as a layer to render
 163  */
 164 void
 165 vl_compositor_set_rgba_layer(struct vl_compositor *compositor,
 166                              unsigned layer,
 167                              struct pipe_sampler_view *rgba,
 168                              struct pipe_video_rect *src_rect,
 169                              struct pipe_video_rect *dst_rect);
 170
 171 /*@}*/
 172
 173 /**
 174  * render the layers to the frontbuffer
 175  */
 176 void
 177 vl_compositor_render(struct vl_compositor   *compositor,
 178                      struct pipe_surface    *dst_surface,
 179                      struct pipe_video_rect *dst_area,
 180                      struct pipe_video_rect *dst_clip,
 181                      bool clear_dirty_area);
 182
 183 /**
 184  * destroy this compositor
 185  */
 186 void
 187 vl_compositor_cleanup(struct vl_compositor *compositor);
 188
 189 #endif /* vl_compositor_h */