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/**********************************************************
* Copyright 2007-2009 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 + 3) & ~3;
if (pitches) {
pitches[0] = *size;
}
*size *= *height;
if (offsets) {
offsets[1] = *size;
}
tmp = ((*width >> 1) + 3) & ~3;
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_
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