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
  52    struct pipe_sampler_view *sampler_views[3];
  53    struct {
  54       struct vertex2f tl, br;
  55    } src, dst;
  56 };
  57
  58 struct vl_compositor
  59 {
  60    struct pipe_context *pipe;
  61
  62    struct pipe_framebuffer_state fb_state;
  63    struct pipe_viewport_state viewport;
  64    struct pipe_vertex_buffer vertex_buf;
  65    struct pipe_resource *csc_matrix;
  66
  67    void *sampler_linear;
  68    void *sampler_nearest;
  69    void *blend;
  70    void *rast;
  71    void *vertex_elems_state;
  72
  73    void *vs;
  74    void *fs_video_buffer;
  75    void *fs_palette;
  76    void *fs_rgba;
  77
  78    float clear_color[4];
  79    struct vertex2f dirty_tl, dirty_br;
  80
  81    unsigned used_layers:VL_COMPOSITOR_MAX_LAYERS;
  82    struct vl_compositor_layer layers[VL_COMPOSITOR_MAX_LAYERS];
  83 };
  84
  85 /**
  86  * initialize this compositor
  87  */
  88 bool
  89 vl_compositor_init(struct vl_compositor *compositor, struct pipe_context *pipe);
  90
  91 /**
  92  * set yuv -> rgba conversion matrix
  93  */
  94 void
  95 vl_compositor_set_csc_matrix(struct vl_compositor *compositor, const float mat[16]);
  96
  97 /**
  98  * reset dirty area, so it's cleared with the clear colour
  99  */
 100 void
 101 vl_compositor_reset_dirty_area(struct vl_compositor *compositor);
 102
 103 /**
 104  * set the clear color
 105  */
 106 void
 107 vl_compositor_set_clear_color(struct vl_compositor *compositor, float color[4]);
 108
 109 /**
 110  * set overlay samplers
 111  */
 112 /*@{*/
 113
 114 /**
 115  * reset all currently set layers
 116  */
 117 void
 118 vl_compositor_clear_layers(struct vl_compositor *compositor);
 119
 120 /**
 121  * set a video buffer as a layer to render
 122  */
 123 void
 124 vl_compositor_set_buffer_layer(struct vl_compositor *compositor,
 125                                unsigned layer,
 126                                struct pipe_video_buffer *buffer,
 127                                struct pipe_video_rect *src_rect,
 128                                struct pipe_video_rect *dst_rect);
 129
 130 /**
 131  * set a paletted sampler as a layer to render
 132  */
 133 void
 134 vl_compositor_set_palette_layer(struct vl_compositor *compositor,
 135                                 unsigned layer,
 136                                 struct pipe_sampler_view *indexes,
 137                                 struct pipe_sampler_view *palette,
 138                                 struct pipe_video_rect *src_rect,
 139                                 struct pipe_video_rect *dst_rect);
 140
 141 /**
 142  * set a rgba sampler as a layer to render
 143  */
 144 void
 145 vl_compositor_set_rgba_layer(struct vl_compositor *compositor,
 146                              unsigned layer,
 147                              struct pipe_sampler_view *rgba,
 148                              struct pipe_video_rect *src_rect,
 149                              struct pipe_video_rect *dst_rect);
 150
 151 /*@}*/
 152
 153 /**
 154  * render the layers to the frontbuffer
 155  */
 156 void
 157 vl_compositor_render(struct vl_compositor          *compositor,
 158                      enum pipe_mpeg12_picture_type picture_type,
 159                      struct pipe_surface           *dst_surface,
 160                      struct pipe_video_rect        *dst_area,
 161                      struct pipe_fence_handle      **fence);
 162
 163 /**
 164 * destroy this compositor
 165 */
 166 void
 167 vl_compositor_cleanup(struct vl_compositor *compositor);
 168
 169 #endif /* vl_compositor_h */