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 #define VL_COMPOSITOR_SAMPLERS 4
  45
  46 struct vl_compositor_layer
  47 {
  48    bool clearing, custom_dest_rect;
  49
  50    void *fs;
  51    void *samplers[VL_COMPOSITOR_SAMPLERS];
  52    void *blend;
  53
  54    struct pipe_sampler_view *sampler_views[VL_COMPOSITOR_SAMPLERS];
  55    struct {
  56       struct vertex2f tl, br;
  57    } src, dst;
  58 };
  59
  60 struct vl_compositor
  61 {
  62    struct pipe_context *pipe;
  63
  64    struct pipe_framebuffer_state fb_state;
  65    struct pipe_viewport_state viewport;
  66    struct pipe_vertex_buffer vertex_buf;
  67    struct pipe_resource *csc_matrix, *video_res[5];
  68    struct pipe_sampler_view *video_sv[5];
  69    struct pipe_surface *video_surf[5];
  70
  71    void *sampler_linear;
  72    void *sampler_nearest;
  73    void *sampler_repeat;
  74    void *blend_clear, *blend_add;
  75    void *rast;
  76    void *dsa;
  77    void *vertex_elems_state;
  78
  79    void *vs;
  80    void *fs_video_buffer[4];
  81    void *fs_weave[6];
  82    void *fs_rgba;
  83
  84    struct {
  85       void *rgb;
  86       void *yuv;
  87    } fs_palette;
  88
  89    union pipe_color_union clear_color;
  90    struct vertex2f dirty_tl, dirty_br;
  91
  92    enum pipe_video_chroma_format chroma;
  93    unsigned video_w, video_h;
  94    unsigned used_layers:VL_COMPOSITOR_MAX_LAYERS;
  95    struct vl_compositor_layer layers[VL_COMPOSITOR_MAX_LAYERS];
  96    float original_sizes[8], csc[16];
  97 };
  98
  99 /**
 100  * initialize this compositor
 101  */
 102 bool
 103 vl_compositor_init(struct vl_compositor *compositor, struct pipe_context *pipe);
 104
 105 /**
 106  * initialize this compositor for video
 107  */
 108 bool
 109 vl_compositor_init_video(struct vl_compositor *compositor, struct pipe_context *pipe,
 110                          enum pipe_video_chroma_format chroma,
 111                          unsigned width, unsigned height);
 112
 113 /**
 114  * set yuv -> rgba conversion matrix
 115  */
 116 void
 117 vl_compositor_set_csc_matrix(struct vl_compositor *compositor, const float mat[16]);
 118
 119 /**
 120  * reset dirty area, so it's cleared with the clear colour
 121  */
 122 void
 123 vl_compositor_reset_dirty_area(struct vl_compositor *compositor);
 124
 125 /**
 126  * set the clear color
 127  */
 128 void
 129 vl_compositor_set_clear_color(struct vl_compositor *compositor, union pipe_color_union *color);
 130
 131 /**
 132  * get the clear color
 133  */
 134 void
 135 vl_compositor_get_clear_color(struct vl_compositor *compositor, union pipe_color_union *color);
 136
 137 /**
 138  * set overlay samplers
 139  */
 140 /*@{*/
 141
 142 /**
 143  * reset all currently set layers
 144  */
 145 void
 146 vl_compositor_clear_layers(struct vl_compositor *compositor);
 147
 148 /**
 149  * set the blender used to render a layer
 150  */
 151 void
 152 vl_compositor_set_layer_blend(struct vl_compositor *compositor,
 153                               unsigned layer, void *blend, bool is_clearing);
 154
 155 /**
 156  * set a video buffer as a layer to render
 157  */
 158 void
 159 vl_compositor_set_buffer_layer(struct vl_compositor *c, unsigned layer,
 160                                enum pipe_video_picture_structure field,
 161                                struct pipe_video_buffer *buffer,
 162                                struct pipe_video_rect *src_rect,
 163                                struct pipe_video_rect *dst_rect,
 164                                unsigned past_count,
 165                                struct pipe_video_buffer **past,
 166                                unsigned future_count,
 167                                struct pipe_video_buffer **future);
 168
 169 /**
 170  * set a paletted sampler as a layer to render
 171  */
 172 void
 173 vl_compositor_set_palette_layer(struct vl_compositor *compositor,
 174                                 unsigned layer,
 175                                 struct pipe_sampler_view *indexes,
 176                                 struct pipe_sampler_view *palette,
 177                                 struct pipe_video_rect *src_rect,
 178                                 struct pipe_video_rect *dst_rect,
 179                                 bool include_color_conversion);
 180
 181 /**
 182  * set a rgba sampler as a layer to render
 183  */
 184 void
 185 vl_compositor_set_rgba_layer(struct vl_compositor *compositor,
 186                              unsigned layer,
 187                              struct pipe_sampler_view *rgba,
 188                              struct pipe_video_rect *src_rect,
 189                              struct pipe_video_rect *dst_rect);
 190
 191 /*@}*/
 192
 193 /**
 194  * render the layers to the frontbuffer
 195  */
 196 void
 197 vl_compositor_render(struct vl_compositor   *compositor,
 198                      struct pipe_surface    *dst_surface,
 199                      struct pipe_video_rect *dst_area,
 200                      struct pipe_video_rect *dst_clip,
 201                      bool clear_dirty_area);
 202
 203 /**
 204  * destroy this compositor
 205  */
 206 void
 207 vl_compositor_cleanup(struct vl_compositor *compositor);
 208
 209 #endif /* vl_compositor_h */