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/drivers/gpu/drm/vmwgfx/svga_overlay.h

https://gitlab.com/TeamTators/hp-kernel-tenderloin
C Header | 201 lines | 106 code | 38 blank | 57 comment | 7 complexity | 72d6126abdcf5961d6a58bc32dd52bd5 MD5 | raw file
  1/**********************************************************
  2 * Copyright 2007-2009 VMware, Inc.  All rights reserved.
  3 *
  4 * Permission is hereby granted, free of charge, to any person
  5 * obtaining a copy of this software and associated documentation
  6 * files (the "Software"), to deal in the Software without
  7 * restriction, including without limitation the rights to use, copy,
  8 * modify, merge, publish, distribute, sublicense, and/or sell copies
  9 * of the Software, and to permit persons to whom the Software is
 10 * furnished to do so, subject to the following conditions:
 11 *
 12 * The above copyright notice and this permission notice shall be
 13 * included in all copies or substantial portions of the Software.
 14 *
 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 22 * SOFTWARE.
 23 *
 24 **********************************************************/
 25
 26/*
 27 * svga_overlay.h --
 28 *
 29 *    Definitions for video-overlay support.
 30 */
 31
 32#ifndef _SVGA_OVERLAY_H_
 33#define _SVGA_OVERLAY_H_
 34
 35#include "svga_reg.h"
 36
 37/*
 38 * Video formats we support
 39 */
 40
 41#define VMWARE_FOURCC_YV12 0x32315659 // 'Y' 'V' '1' '2'
 42#define VMWARE_FOURCC_YUY2 0x32595559 // 'Y' 'U' 'Y' '2'
 43#define VMWARE_FOURCC_UYVY 0x59565955 // 'U' 'Y' 'V' 'Y'
 44
 45typedef enum {
 46   SVGA_OVERLAY_FORMAT_INVALID = 0,
 47   SVGA_OVERLAY_FORMAT_YV12 = VMWARE_FOURCC_YV12,
 48   SVGA_OVERLAY_FORMAT_YUY2 = VMWARE_FOURCC_YUY2,
 49   SVGA_OVERLAY_FORMAT_UYVY = VMWARE_FOURCC_UYVY,
 50} SVGAOverlayFormat;
 51
 52#define SVGA_VIDEO_COLORKEY_MASK             0x00ffffff
 53
 54#define SVGA_ESCAPE_VMWARE_VIDEO             0x00020000
 55
 56#define SVGA_ESCAPE_VMWARE_VIDEO_SET_REGS    0x00020001
 57        /* FIFO escape layout:
 58         * Type, Stream Id, (Register Id, Value) pairs */
 59
 60#define SVGA_ESCAPE_VMWARE_VIDEO_FLUSH       0x00020002
 61        /* FIFO escape layout:
 62         * Type, Stream Id */
 63
 64typedef
 65struct SVGAEscapeVideoSetRegs {
 66   struct {
 67      uint32 cmdType;
 68      uint32 streamId;
 69   } header;
 70
 71   // May include zero or more items.
 72   struct {
 73      uint32 registerId;
 74      uint32 value;
 75   } items[1];
 76} SVGAEscapeVideoSetRegs;
 77
 78typedef
 79struct SVGAEscapeVideoFlush {
 80   uint32 cmdType;
 81   uint32 streamId;
 82} SVGAEscapeVideoFlush;
 83
 84
 85/*
 86 * Struct definitions for the video overlay commands built on
 87 * SVGAFifoCmdEscape.
 88 */
 89typedef
 90struct {
 91   uint32 command;
 92   uint32 overlay;
 93} SVGAFifoEscapeCmdVideoBase;
 94
 95typedef
 96struct {
 97   SVGAFifoEscapeCmdVideoBase videoCmd;
 98} SVGAFifoEscapeCmdVideoFlush;
 99
100typedef
101struct {
102   SVGAFifoEscapeCmdVideoBase videoCmd;
103   struct {
104      uint32 regId;
105      uint32 value;
106   } items[1];
107} SVGAFifoEscapeCmdVideoSetRegs;
108
109typedef
110struct {
111   SVGAFifoEscapeCmdVideoBase videoCmd;
112   struct {
113      uint32 regId;
114      uint32 value;
115   } items[SVGA_VIDEO_NUM_REGS];
116} SVGAFifoEscapeCmdVideoSetAllRegs;
117
118
119/*
120 *----------------------------------------------------------------------
121 *
122 * VMwareVideoGetAttributes --
123 *
124 *      Computes the size, pitches and offsets for YUV frames.
125 *
126 * Results:
127 *      TRUE on success; otherwise FALSE on failure.
128 *
129 * Side effects:
130 *      Pitches and offsets for the given YUV frame are put in 'pitches'
131 *      and 'offsets' respectively. They are both optional though.
132 *
133 *----------------------------------------------------------------------
134 */
135
136static inline bool
137VMwareVideoGetAttributes(const SVGAOverlayFormat format,    // IN
138                         uint32 *width,                     // IN / OUT
139                         uint32 *height,                    // IN / OUT
140                         uint32 *size,                      // OUT
141                         uint32 *pitches,                   // OUT (optional)
142                         uint32 *offsets)                   // OUT (optional)
143{
144    int tmp;
145
146    *width = (*width + 1) & ~1;
147
148    if (offsets) {
149        offsets[0] = 0;
150    }
151
152    switch (format) {
153    case VMWARE_FOURCC_YV12:
154       *height = (*height + 1) & ~1;
155       *size = (*width + 3) & ~3;
156
157       if (pitches) {
158          pitches[0] = *size;
159       }
160
161       *size *= *height;
162
163       if (offsets) {
164          offsets[1] = *size;
165       }
166
167       tmp = ((*width >> 1) + 3) & ~3;
168
169       if (pitches) {
170          pitches[1] = pitches[2] = tmp;
171       }
172
173       tmp *= (*height >> 1);
174       *size += tmp;
175
176       if (offsets) {
177          offsets[2] = *size;
178       }
179
180       *size += tmp;
181       break;
182
183    case VMWARE_FOURCC_YUY2:
184    case VMWARE_FOURCC_UYVY:
185       *size = *width * 2;
186
187       if (pitches) {
188          pitches[0] = *size;
189       }
190
191       *size *= *height;
192       break;
193
194    default:
195       return false;
196    }
197
198    return true;
199}
200
201#endif // _SVGA_OVERLAY_H_