src/gallium/auxiliary/vl/vl_mpeg12_mc_renderer.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_mpeg12_mc_renderer_h
  29 #define vl_mpeg12_mc_renderer_h
  30
  31 #include <pipe/p_compiler.h>
  32 #include <pipe/p_state.h>
  33 #include <pipe/p_video_state.h>
  34
  35 struct pipe_context;
  36 struct pipe_video_surface;
  37 struct pipe_macroblock;
  38
  39 /* A slice is video-width (rounded up to a multiple of macroblock width) x macroblock height */
  40 enum VL_MPEG12_MC_RENDERER_BUFFER_MODE
  41 {
  42    VL_MPEG12_MC_RENDERER_BUFFER_SLICE,  /* Saves memory at the cost of smaller batches */
  43    VL_MPEG12_MC_RENDERER_BUFFER_PICTURE /* Larger batches, more memory */
  44 };
  45
  46 enum VL_MPEG12_MC_RENDERER_EMPTY_BLOCK
  47 {
  48    VL_MPEG12_MC_RENDERER_EMPTY_BLOCK_XFER_ALL, /* Waste of memory bandwidth */
  49    VL_MPEG12_MC_RENDERER_EMPTY_BLOCK_XFER_ONE, /* Can only do point-filtering when interpolating subsampled chroma channels */
  50    VL_MPEG12_MC_RENDERER_EMPTY_BLOCK_XFER_NONE /* Needs conditional texel fetch! */
  51 };
  52
  53 struct vertex2f
  54 {
  55    float x, y;
  56 };
  57
  58 struct vl_mpeg12_mc_renderer
  59 {
  60    struct pipe_context *pipe;
  61    unsigned picture_width;
  62    unsigned picture_height;
  63    enum pipe_video_chroma_format chroma_format;
  64    enum VL_MPEG12_MC_RENDERER_BUFFER_MODE bufmode;
  65    enum VL_MPEG12_MC_RENDERER_EMPTY_BLOCK eb_handling;
  66    bool pot_buffers;
  67    unsigned macroblocks_per_batch;
  68
  69    struct pipe_viewport_state viewport;
  70    struct pipe_constant_buffer vs_const_buf;
  71    struct pipe_framebuffer_state fb_state;
  72    struct pipe_vertex_element vertex_elems[8];
  73
  74    union
  75    {
  76       void *all[5];
  77       struct { void *y, *cb, *cr, *ref[2]; } individual;
  78    } samplers;
  79
  80    void *i_vs, *p_vs[2], *b_vs[2];
  81    void *i_fs, *p_fs[2], *b_fs[2];
  82
  83    union
  84    {
  85       struct pipe_texture *all[5];
  86       struct { struct pipe_texture *y, *cb, *cr, *ref[2]; } individual;
  87    } textures;
  88
  89    union
  90    {
  91       struct pipe_vertex_buffer all[3];
  92       struct { struct pipe_vertex_buffer ycbcr, ref[2]; } individual;
  93    } vertex_bufs;
  94
  95    struct pipe_texture *surface, *past, *future;
  96    struct pipe_fence_handle **fence;
  97    unsigned num_macroblocks;
  98    struct pipe_mpeg12_macroblock *macroblock_buf;
  99    struct pipe_transfer *tex_transfer[3];
 100    short *texels[3];
 101    struct vertex2f surface_tex_inv_size;
 102    struct vertex2f zero_block[3];
 103 };
 104
 105 bool vl_mpeg12_mc_renderer_init(struct vl_mpeg12_mc_renderer *renderer,
 106                                 struct pipe_context *pipe,
 107                                 unsigned picture_width,
 108                                 unsigned picture_height,
 109                                 enum pipe_video_chroma_format chroma_format,
 110                                 enum VL_MPEG12_MC_RENDERER_BUFFER_MODE bufmode,
 111                                 enum VL_MPEG12_MC_RENDERER_EMPTY_BLOCK eb_handling,
 112                                 bool pot_buffers);
 113
 114 void vl_mpeg12_mc_renderer_cleanup(struct vl_mpeg12_mc_renderer *renderer);
 115
 116 void vl_mpeg12_mc_renderer_render_macroblocks(struct vl_mpeg12_mc_renderer *renderer,
 117                                               struct pipe_texture *surface,
 118                                               struct pipe_texture *past,
 119                                               struct pipe_texture *future,
 120                                               unsigned num_macroblocks,
 121                                               struct pipe_mpeg12_macroblock *mpeg12_macroblocks,
 122                                               struct pipe_fence_handle **fence);
 123
 124 #endif /* vl_mpeg12_mc_renderer_h */