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 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 #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 */
139