summaryrefslogtreecommitdiffstats
path: root/src/gallium/drivers/svga/include/svga_overlay.h
blob: 0f242dd402c1f53b7a5436957d5d4e6a2e7ae8e1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
/**********************************************************
 * Copyright 2007-2014 VMware, Inc.  All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use, copy,
 * modify, merge, publish, distribute, sublicense, and/or sell copies
 * of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 **********************************************************/

/*
 * svga_overlay.h --
 *
 *    Definitions for video-overlay support.
 */

#ifndef _SVGA_OVERLAY_H_
#define _SVGA_OVERLAY_H_

#include "svga_reg.h"

/*
 * Video formats we support
 */

#define VMWARE_FOURCC_YV12 0x32315659 // 'Y' 'V' '1' '2'
#define VMWARE_FOURCC_YUY2 0x32595559 // 'Y' 'U' 'Y' '2'
#define VMWARE_FOURCC_UYVY 0x59565955 // 'U' 'Y' 'V' 'Y'

typedef enum {
   SVGA_OVERLAY_FORMAT_INVALID = 0,
   SVGA_OVERLAY_FORMAT_YV12 = VMWARE_FOURCC_YV12,
   SVGA_OVERLAY_FORMAT_YUY2 = VMWARE_FOURCC_YUY2,
   SVGA_OVERLAY_FORMAT_UYVY = VMWARE_FOURCC_UYVY,
} SVGAOverlayFormat;

#define SVGA_VIDEO_COLORKEY_MASK             0x00ffffff

#define SVGA_ESCAPE_VMWARE_VIDEO             0x00020000

#define SVGA_ESCAPE_VMWARE_VIDEO_SET_REGS    0x00020001
        /* FIFO escape layout:
         * Type, Stream Id, (Register Id, Value) pairs */

#define SVGA_ESCAPE_VMWARE_VIDEO_FLUSH       0x00020002
        /* FIFO escape layout:
         * Type, Stream Id */

typedef
struct SVGAEscapeVideoSetRegs {
   struct {
      uint32 cmdType;
      uint32 streamId;
   } header;

   // May include zero or more items.
   struct {
      uint32 registerId;
      uint32 value;
   } items[1];
} SVGAEscapeVideoSetRegs;

typedef
struct SVGAEscapeVideoFlush {
   uint32 cmdType;
   uint32 streamId;
} SVGAEscapeVideoFlush;


/*
 * Struct definitions for the video overlay commands built on
 * SVGAFifoCmdEscape.
 */
typedef
struct {
   uint32 command;
   uint32 overlay;
} SVGAFifoEscapeCmdVideoBase;

typedef
struct {
   SVGAFifoEscapeCmdVideoBase videoCmd;
} SVGAFifoEscapeCmdVideoFlush;

typedef
struct {
   SVGAFifoEscapeCmdVideoBase videoCmd;
   struct {
      uint32 regId;
      uint32 value;
   } items[1];
} SVGAFifoEscapeCmdVideoSetRegs;

typedef
struct {
   SVGAFifoEscapeCmdVideoBase videoCmd;
   struct {
      uint32 regId;
      uint32 value;
   } items[SVGA_VIDEO_NUM_REGS];
} SVGAFifoEscapeCmdVideoSetAllRegs;


/*
 *----------------------------------------------------------------------
 *
 * VMwareVideoGetAttributes --
 *
 *      Computes the size, pitches and offsets for YUV frames.
 *
 * Results:
 *      TRUE on success; otherwise FALSE on failure.
 *
 * Side effects:
 *      Pitches and offsets for the given YUV frame are put in 'pitches'
 *      and 'offsets' respectively. They are both optional though.
 *
 *----------------------------------------------------------------------
 */

static INLINE Bool
VMwareVideoGetAttributes(const SVGAOverlayFormat format,    // IN
                         uint32 *width,                     // IN / OUT
                         uint32 *height,                    // IN / OUT
                         uint32 *size,                      // OUT
                         uint32 *pitches,                   // OUT (optional)
                         uint32 *offsets)                   // OUT (optional)
{
    int tmp;

    *width = (*width + 1) & ~1;

    if (offsets) {
        offsets[0] = 0;
    }

    switch (format) {
    case VMWARE_FOURCC_YV12:
       *height = (*height + 1) & ~1;
       *size = (*width) * (*height);

       if (pitches) {
          pitches[0] = *width;
       }

       if (offsets) {
          offsets[1] = *size;
       }

       tmp = *width >> 1;

       if (pitches) {
          pitches[1] = pitches[2] = tmp;
       }

       tmp *= (*height >> 1);
       *size += tmp;

       if (offsets) {
          offsets[2] = *size;
       }

       *size += tmp;
       break;

    case VMWARE_FOURCC_YUY2:
    case VMWARE_FOURCC_UYVY:
       *size = *width * 2;

       if (pitches) {
          pitches[0] = *size;
       }

       *size *= *height;
       break;

    default:
       return FALSE;
    }

    return TRUE;
}

#endif // _SVGA_OVERLAY_H_