src/gallium/auxiliary/vl/vl_vertex_buffers.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2010 Christian König
   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 VMWARE 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 #ifndef vl_vertex_buffers_h
  28 #define vl_vertex_buffers_h
  29
  30 #include "pipe/p_state.h"
  31 #include "pipe/p_video_state.h"
  32
  33 #include "vl_defines.h"
  34 #include "vl_types.h"
  35
  36 /* vertex buffers act as a todo list
  37  * uploading all the usefull informations to video ram
  38  * so a vertex shader can work with them
  39  */
  40
  41 /* inputs to the vertex shaders */
  42 enum VS_INPUT
  43 {
  44    VS_I_RECT = 0,
  45    VS_I_VPOS = 1,
  46
  47    VS_I_BLOCK_NUM = 2,
  48
  49    VS_I_MV_TOP = 2,
  50    VS_I_MV_BOTTOM = 3,
  51
  52    NUM_VS_INPUTS = 4
  53 };
  54
  55 enum vl_mv_weight
  56 {
  57    PIPE_VIDEO_MV_WEIGHT_MIN = 0,
  58    PIPE_VIDEO_MV_WEIGHT_HALF = 128,
  59    PIPE_VIDEO_MV_WEIGHT_MAX = 256
  60 };
  61
  62 enum vl_field_select
  63 {
  64    PIPE_VIDEO_FRAME = 0,
  65    PIPE_VIDEO_TOP_FIELD = 1,
  66    PIPE_VIDEO_BOTTOM_FIELD = 3,
  67
  68    /* TODO
  69    PIPE_VIDEO_DUALPRIME
  70    PIPE_VIDEO_16x8
  71    */
  72 };
  73
  74 struct vl_motionvector
  75 {
  76    struct {
  77       int16_t x, y;
  78       int16_t field_select; /**< enum pipe_video_field_select */
  79       int16_t weight;  /**< enum pipe_video_mv_weight  */
  80    } top, bottom;
  81 };
  82
  83 struct vl_ycbcr_block
  84 {
  85    uint8_t x, y;
  86    uint8_t intra;
  87    uint8_t coding;
  88    float block_num;
  89 };
  90
  91 struct vl_vertex_buffer
  92 {
  93    unsigned width, height;
  94
  95    struct {
  96       struct pipe_resource  *resource;
  97       struct pipe_transfer  *transfer;
  98       struct vl_ycbcr_block *vertex_stream;
  99    } ycbcr[VL_NUM_COMPONENTS];
 100
 101    struct {
 102       struct pipe_resource   *resource;
 103       struct pipe_transfer   *transfer;
 104       struct vl_motionvector *vertex_stream;
 105    } mv[VL_MAX_REF_FRAMES];
 106 };
 107
 108 struct pipe_vertex_buffer vl_vb_upload_quads(struct pipe_context *pipe);
 109
 110 struct pipe_vertex_buffer vl_vb_upload_pos(struct pipe_context *pipe, unsigned width, unsigned height);
 111
 112 void *vl_vb_get_ves_ycbcr(struct pipe_context *pipe);
 113
 114 void *vl_vb_get_ves_mv(struct pipe_context *pipe);
 115
 116 bool vl_vb_init(struct vl_vertex_buffer *buffer,
 117                 struct pipe_context *pipe,
 118                 unsigned width, unsigned height);
 119
 120 unsigned vl_vb_attributes_per_plock(struct vl_vertex_buffer *buffer);
 121
 122 void vl_vb_map(struct vl_vertex_buffer *buffer, struct pipe_context *pipe);
 123
 124 struct pipe_vertex_buffer vl_vb_get_ycbcr(struct vl_vertex_buffer *buffer, int component);
 125
 126 struct vl_ycbcr_block *vl_vb_get_ycbcr_stream(struct vl_vertex_buffer *buffer, int component);
 127
 128 struct pipe_vertex_buffer vl_vb_get_mv(struct vl_vertex_buffer *buffer, int ref_frame);
 129
 130 unsigned vl_vb_get_mv_stream_stride(struct vl_vertex_buffer *buffer);
 131
 132 struct vl_motionvector *vl_vb_get_mv_stream(struct vl_vertex_buffer *buffer, int ref_frame);
 133
 134 void vl_vb_unmap(struct vl_vertex_buffer *buffer, struct pipe_context *pipe);
 135
 136 void vl_vb_cleanup(struct vl_vertex_buffer *buffer);
 137
 138 #endif /* vl_vertex_buffers_h */