path: root/src/r128_video.c

/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/ati/r128_video.c,v 1.30 2003/11/10 18:22:18 tsi Exp $ */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "r128.h"
#include "r128_reg.h"

#ifdef XF86DRI
#include "r128_common.h"
#include "r128_sarea.h"
#endif

#include "xf86.h"
#include "dixstruct.h"

#include <X11/extensions/Xv.h>
#include "fourcc.h"

#define OFF_DELAY       250  /* milliseconds */
#define FREE_DELAY      15000

#define OFF_TIMER       0x01
#define FREE_TIMER      0x02
#define CLIENT_VIDEO_ON 0x04

#define TIMER_MASK      (OFF_TIMER | FREE_TIMER)

static XF86VideoAdaptorPtr R128SetupImageVideo(ScreenPtr);
static int  R128SetPortAttribute(ScrnInfoPtr, Atom, INT32, pointer);
static int  R128GetPortAttribute(ScrnInfoPtr, Atom ,INT32 *, pointer);
static void R128StopVideo(ScrnInfoPtr, pointer, Bool);
static void R128QueryBestSize(ScrnInfoPtr, Bool, short, short, short, short,
			unsigned int *, unsigned int *, pointer);
static int  R128PutImage(ScrnInfoPtr, short, short, short, short, short,
			short, short, short, int, unsigned char*, short,
			short, Bool, RegionPtr, pointer);
static int  R128QueryImageAttributes(ScrnInfoPtr, int, unsigned short *,
			unsigned short *,  int *, int *);


static void R128ResetVideo(ScrnInfoPtr);

static void R128VideoTimerCallback(ScrnInfoPtr pScrn, Time now);


#define MAKE_ATOM(a) MakeAtom(a, sizeof(a) - 1, TRUE)

static Atom xvBrightness, xvColorKey, xvSaturation, xvDoubleBuffer;


typedef struct {
   int           brightness;
   int           saturation;
   Bool          doubleBuffer;
   unsigned char currentBuffer;
   FBLinearPtr   linear;
   RegionRec     clip;
   CARD32        colorKey;
   CARD32        videoStatus;
   Time          offTime;
   Time          freeTime;
   int           ecp_div;
} R128PortPrivRec, *R128PortPrivPtr;

static void R128ECP(ScrnInfoPtr pScrn, R128PortPrivPtr pPriv)
{
    R128InfoPtr     info      = R128PTR(pScrn);
    unsigned char   *R128MMIO = info->MMIO;
    int             dot_clock = info->ModeReg.dot_clock_freq;

    if (dot_clock < 12500)      pPriv->ecp_div = 0;
    else if (dot_clock < 25000) pPriv->ecp_div = 1;
    else                        pPriv->ecp_div = 2;

    OUTPLLP(pScrn, R128_VCLK_ECP_CNTL, pPriv->ecp_div<<8, ~R128_ECP_DIV_MASK);
}

void R128InitVideo(ScreenPtr pScreen)
{
    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
    XF86VideoAdaptorPtr *adaptors, *newAdaptors = NULL;
    XF86VideoAdaptorPtr newAdaptor = NULL;
    int num_adaptors;

    newAdaptor = R128SetupImageVideo(pScreen);

    num_adaptors = xf86XVListGenericAdaptors(pScrn, &adaptors);

    if(newAdaptor) {
	if(!num_adaptors) {
	    num_adaptors = 1;
	    adaptors = &newAdaptor;
	} else {
	    newAdaptors =  /* need to free this someplace */
		xalloc((num_adaptors + 1) * sizeof(XF86VideoAdaptorPtr*));
	    if(newAdaptors) {
		memcpy(newAdaptors, adaptors, num_adaptors *
					sizeof(XF86VideoAdaptorPtr));
		newAdaptors[num_adaptors] = newAdaptor;
		adaptors = newAdaptors;
		num_adaptors++;
	    }
	}
    }

    if(num_adaptors)
	xf86XVScreenInit(pScreen, adaptors, num_adaptors);

    if(newAdaptors)
	xfree(newAdaptors);
}

#define MAXWIDTH 2048
#define MAXHEIGHT 2048

/* client libraries expect an encoding */
static XF86VideoEncodingRec DummyEncoding =
{
   0,
   "XV_IMAGE",
   MAXWIDTH, MAXHEIGHT,
   {1, 1}
};

#define NUM_FORMATS 12

static XF86VideoFormatRec Formats[NUM_FORMATS] =
{
   {8, TrueColor}, {8, DirectColor}, {8, PseudoColor},
   {8, GrayScale}, {8, StaticGray}, {8, StaticColor},
   {15, TrueColor}, {16, TrueColor}, {24, TrueColor},
   {15, DirectColor}, {16, DirectColor}, {24, DirectColor}
};


#define NUM_ATTRIBUTES 4

static XF86AttributeRec Attributes[NUM_ATTRIBUTES] =
{
   {XvSettable | XvGettable, 0, (1 << 24) - 1, "XV_COLORKEY"},
   {XvSettable | XvGettable, -64, 63, "XV_BRIGHTNESS"},
   {XvSettable | XvGettable, 0, 31, "XV_SATURATION"},
   {XvSettable | XvGettable, 0, 1, "XV_DOUBLE_BUFFER"}
};

#define NUM_IMAGES 4

static XF86ImageRec Images[NUM_IMAGES] =
{
	XVIMAGE_YUY2,
	XVIMAGE_UYVY,
	XVIMAGE_YV12,
	XVIMAGE_I420
};

static void
R128ResetVideo(ScrnInfoPtr pScrn)
{
    R128InfoPtr   info      = R128PTR(pScrn);
    unsigned char *R128MMIO = info->MMIO;
    R128PortPrivPtr pPriv = info->adaptor->pPortPrivates[0].ptr;


    OUTREG(R128_OV0_SCALE_CNTL, 0x80000000);
    OUTREG(R128_OV0_EXCLUSIVE_HORZ, 0);
    OUTREG(R128_OV0_AUTO_FLIP_CNTL, 0);   /* maybe */
    OUTREG(R128_OV0_FILTER_CNTL, 0x0000000f);
    OUTREG(R128_OV0_COLOUR_CNTL, (pPriv->brightness & 0x7f) |
				 (pPriv->saturation << 8) |
				 (pPriv->saturation << 16));
    OUTREG(R128_OV0_GRAPHICS_KEY_MSK, (1 << pScrn->depth) - 1);
    OUTREG(R128_OV0_GRAPHICS_KEY_CLR, pPriv->colorKey);
    OUTREG(R128_OV0_KEY_CNTL, R128_GRAPHIC_KEY_FN_NE);
    OUTREG(R128_OV0_TEST, 0);
}


static XF86VideoAdaptorPtr
R128AllocAdaptor(ScrnInfoPtr pScrn)
{
    XF86VideoAdaptorPtr adapt;
    R128InfoPtr info = R128PTR(pScrn);
    R128PortPrivPtr pPriv;

    if(!(adapt = xf86XVAllocateVideoAdaptorRec(pScrn)))
	return NULL;

    if(!(pPriv = xcalloc(1, sizeof(R128PortPrivRec) + sizeof(DevUnion))))
    {
	xfree(adapt);
	return NULL;
    }

    adapt->pPortPrivates = (DevUnion*)(&pPriv[1]);
    adapt->pPortPrivates[0].ptr = (pointer)pPriv;

    xvBrightness   = MAKE_ATOM("XV_BRIGHTNESS");
    xvSaturation   = MAKE_ATOM("XV_SATURATION");
    xvColorKey     = MAKE_ATOM("XV_COLORKEY");
    xvDoubleBuffer = MAKE_ATOM("XV_DOUBLE_BUFFER");

    pPriv->colorKey = info->videoKey;
    pPriv->doubleBuffer = TRUE;
    pPriv->videoStatus = 0;
    pPriv->brightness = 0;
    pPriv->saturation = 16;
    pPriv->currentBuffer = 0;
    R128ECP(pScrn, pPriv);

    return adapt;
}

static XF86VideoAdaptorPtr
R128SetupImageVideo(ScreenPtr pScreen)
{
    ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
    R128InfoPtr info = R128PTR(pScrn);
    R128PortPrivPtr pPriv;
    XF86VideoAdaptorPtr adapt;

    if(!(adapt = R128AllocAdaptor(pScrn)))
	return NULL;

    adapt->type = XvWindowMask | XvInputMask | XvImageMask;
    adapt->flags = VIDEO_OVERLAID_IMAGES | VIDEO_CLIP_TO_VIEWPORT;
    adapt->name = "ATI Rage128 Video Overlay";
    adapt->nEncodings = 1;
    adapt->pEncodings = &DummyEncoding;
    adapt->nFormats = NUM_FORMATS;
    adapt->pFormats = Formats;
    adapt->nPorts = 1;
    adapt->nAttributes = NUM_ATTRIBUTES;
    adapt->pAttributes = Attributes;
    adapt->nImages = NUM_IMAGES;
    adapt->pImages = Images;
    adapt->PutVideo = NULL;
    adapt->PutStill = NULL;
    adapt->GetVideo = NULL;
    adapt->GetStill = NULL;
    adapt->StopVideo = R128StopVideo;
    adapt->SetPortAttribute = R128SetPortAttribute;
    adapt->GetPortAttribute = R128GetPortAttribute;
    adapt->QueryBestSize = R128QueryBestSize;
    adapt->PutImage = R128PutImage;
    adapt->QueryImageAttributes = R128QueryImageAttributes;

    info->adaptor = adapt;

    pPriv = (R128PortPrivPtr)(adapt->pPortPrivates[0].ptr);
    REGION_NULL(pScreen, &(pPriv->clip));

    R128ResetVideo(pScrn);

    return adapt;
}

static void
R128StopVideo(ScrnInfoPtr pScrn, pointer data, Bool cleanup)
{
  R128InfoPtr info = R128PTR(pScrn);
  unsigned char *R128MMIO = info->MMIO;
  R128PortPrivPtr pPriv = (R128PortPrivPtr)data;

  REGION_EMPTY(pScrn->pScreen, &pPriv->clip);

  if(cleanup) {
     if(pPriv->videoStatus & CLIENT_VIDEO_ON) {
	OUTREG(R128_OV0_SCALE_CNTL, 0);
     }
     if(pPriv->linear) {
	xf86FreeOffscreenLinear(pPriv->linear);
	pPriv->linear = NULL;
     }
     pPriv->videoStatus = 0;
  } else {
     if(pPriv->videoStatus & CLIENT_VIDEO_ON) {
	pPriv->videoStatus |= OFF_TIMER;
	pPriv->offTime = currentTime.milliseconds + OFF_DELAY;
     }
  }
}

static int
R128SetPortAttribute(
  ScrnInfoPtr pScrn,
  Atom attribute,
  INT32 value,
  pointer data
){
  R128InfoPtr info = R128PTR(pScrn);
  unsigned char *R128MMIO = info->MMIO;
  R128PortPrivPtr pPriv = (R128PortPrivPtr)data;

  if(attribute == xvBrightness) {
	if((value < -64) || (value > 63))
	   return BadValue;
	pPriv->brightness = value;

	OUTREG(R128_OV0_COLOUR_CNTL, (pPriv->brightness & 0x7f) |
				     (pPriv->saturation << 8) |
				     (pPriv->saturation << 16));
  } else
  if(attribute == xvSaturation) {
	if((value < 0) || (value > 31))
	   return BadValue;
	pPriv->saturation = value;

	OUTREG(R128_OV0_COLOUR_CNTL, (pPriv->brightness & 0x7f) |
				     (pPriv->saturation << 8) |
				     (pPriv->saturation << 16));
  } else
  if(attribute == xvDoubleBuffer) {
	if((value < 0) || (value > 1))
	   return BadValue;
	pPriv->doubleBuffer = value;
  } else
  if(attribute == xvColorKey) {
	pPriv->colorKey = value;
	OUTREG(R128_OV0_GRAPHICS_KEY_CLR, pPriv->colorKey);

	REGION_EMPTY(pScrn->pScreen, &pPriv->clip);
  } else return BadMatch;

  return Success;
}

static int
R128GetPortAttribute(
  ScrnInfoPtr pScrn,
  Atom attribute,
  INT32 *value,
  pointer data
){
  R128PortPrivPtr pPriv = (R128PortPrivPtr)data;

  if(attribute == xvBrightness) {
	*value = pPriv->brightness;
  } else
  if(attribute == xvSaturation) {
	*value = pPriv->saturation;
  } else
  if(attribute == xvDoubleBuffer) {
	*value = pPriv->doubleBuffer ? 1 : 0;
  } else
  if(attribute == xvColorKey) {
	*value = pPriv->colorKey;
  } else return BadMatch;

  return Success;
}


static void
R128QueryBestSize(
  ScrnInfoPtr pScrn,
  Bool motion,
  short vid_w, short vid_h,
  short drw_w, short drw_h,
  unsigned int *p_w, unsigned int *p_h,
  pointer data
){
   if(vid_w > (drw_w << 4))
	drw_w = vid_w >> 4;
   if(vid_h > (drw_h << 4))
	drw_h = vid_h >> 4;

  *p_w = drw_w;
  *p_h = drw_h;
}


/*
 *
 * R128DMA - abuse the texture blit ioctl to transfer rectangular blocks
 *
 * The block is split into 'passes' pieces of 'hpass' lines which fit entirely
 * into an indirect buffer
 *
 */

static Bool
R128DMA(
  R128InfoPtr info,
  unsigned char *src,
  unsigned char *dst,
  int srcPitch,
  int dstPitch,
  int h,
  int w
){

#ifdef XF86DRI

#define BUFSIZE (R128_BUFFER_SIZE - R128_HOSTDATA_BLIT_OFFSET)
#define MAXPASSES (MAXHEIGHT/(BUFSIZE/(MAXWIDTH*2))+1)

    unsigned char *buf;
    int err=-1, i, idx, offset, hpass, passes, srcpassbytes, dstpassbytes;
    int sizes[MAXPASSES], list[MAXPASSES];
    drmDMAReq req;
    drmR128Blit blit;

    /* Verify conditions and bail out as early as possible */
    if (!info->directRenderingEnabled || !info->DMAForXv)
        return FALSE;

    if ((hpass = min(h,(BUFSIZE/w))) == 0)
	return FALSE;

    if ((passes = (h+hpass-1)/hpass) > MAXPASSES)
        return FALSE;

    /* Request indirect buffers */
    srcpassbytes = w*hpass;

    req.context		= info->drmCtx;
    req.send_count	= 0;
    req.send_list	= NULL;
    req.send_sizes	= NULL;
    req.flags		= DRM_DMA_LARGER_OK;
    req.request_count	= passes;
    req.request_size	= srcpassbytes + R128_HOSTDATA_BLIT_OFFSET;
    req.request_list	= &list[0];
    req.request_sizes	= &sizes[0];
    req.granted_count	= 0;

    if (drmDMA(info->drmFD, &req))
        return FALSE;

    if (req.granted_count < passes) {
        drmFreeBufs(info->drmFD, req.granted_count, req.request_list);
	return FALSE;
    }

    /* Copy parts of the block into buffers and fire them */
    dstpassbytes = hpass*dstPitch;
    dstPitch /= 8;

    for (i=0, offset=dst-info->FB; i<passes; i++, offset+=dstpassbytes) {
        if (i == (passes-1) && (h % hpass) != 0) {
	    hpass = h % hpass;
	    srcpassbytes = w*hpass;
	}

	idx = req.request_list[i];
	buf = (unsigned char *) info->buffers->list[idx].address + R128_HOSTDATA_BLIT_OFFSET;

	if (srcPitch == w) {
            memcpy(buf, src, srcpassbytes);
	    src += srcpassbytes;
	} else {
	    int count = hpass;
	    while(count--) {
		memcpy(buf, src, w);
		src += srcPitch;
		buf += w;
	    }
	}

        blit.idx = idx;
        blit.offset = offset;
        blit.pitch = dstPitch;
        blit.format = (R128_DATATYPE_CI8 >> 16);
        blit.x = (offset % 32);
        blit.y = 0;
        blit.width = w;
        blit.height = hpass;

	if ((err = drmCommandWrite(info->drmFD, DRM_R128_BLIT,
                                   &blit, sizeof(drmR128Blit))) < 0)
	    break;
    }

    drmFreeBufs(info->drmFD, req.granted_count, req.request_list);

    return (err==0) ? TRUE : FALSE;

#else

    /* This is to avoid cluttering the rest of the code with '#ifdef XF86DRI' */
    return FALSE;

#endif	/* XF86DRI */

}


static void
R128CopyData422(
  R128InfoPtr info,
  unsigned char *src,
  unsigned char *dst,
  int srcPitch,
  int dstPitch,
  int h,
  int w
){
    w <<= 1;

    /* Attempt data transfer with DMA and fall back to memcpy */

    if (!R128DMA(info, src, dst, srcPitch, dstPitch, h, w)) {
        while(h--) {
	    memcpy(dst, src, w);
	    src += srcPitch;
	    dst += dstPitch;
	}
    }
}

static void
R128CopyData420(
   R128InfoPtr info,
   unsigned char *src1,
   unsigned char *src2,
   unsigned char *src3,
   unsigned char *dst1,
   unsigned char *dst2,
   unsigned char *dst3,
   int srcPitch,
   int srcPitch2,
   int dstPitch,
   int h,
   int w
){
   int count;

   /* Attempt data transfer with DMA and fall back to memcpy */

   if (!R128DMA(info, src1, dst1, srcPitch, dstPitch, h, w)) {
       count = h;
       while(count--) {
	   memcpy(dst1, src1, w);
	   src1 += srcPitch;
	   dst1 += dstPitch;
       }
   }

   w >>= 1;
   h >>= 1;
   dstPitch >>= 1;

   if (!R128DMA(info, src2, dst2, srcPitch2, dstPitch, h, w)) {
       count = h;
       while(count--) {
	   memcpy(dst2, src2, w);
	   src2 += srcPitch2;
	   dst2 += dstPitch;
       }
   }

   if (!R128DMA(info, src3, dst3, srcPitch2, dstPitch, h, w)) {
       count = h;
       while(count--) {
	   memcpy(dst3, src3, w);
	   src3 += srcPitch2;
	   dst3 += dstPitch;
       }
   }
}


static FBLinearPtr
R128AllocateMemory(
   ScrnInfoPtr pScrn,
   FBLinearPtr linear,
   int size
){
   ScreenPtr pScreen;
   FBLinearPtr new_linear;

   if(linear) {
	if(linear->size >= size)
	   return linear;

	if(xf86ResizeOffscreenLinear(linear, size))
	   return linear;

	xf86FreeOffscreenLinear(linear);
   }

   pScreen = screenInfo.screens[pScrn->scrnIndex];

   new_linear = xf86AllocateOffscreenLinear(pScreen, size, 8,
						NULL, NULL, NULL);

   if(!new_linear) {
	int max_size;

	xf86QueryLargestOffscreenLinear(pScreen, &max_size, 8,
						PRIORITY_EXTREME);

	if(max_size < size)
	   return NULL;

	xf86PurgeUnlockedOffscreenAreas(pScreen);
	new_linear = xf86AllocateOffscreenLinear(pScreen, size, 8,
						NULL, NULL, NULL);
   }

   return new_linear;
}

static void
R128DisplayVideo422(
    ScrnInfoPtr pScrn,
    int id,
    int offset,
    short width, short height,
    int pitch,
    int left, int right, int top,
    BoxPtr dstBox,
    short src_w, short src_h,
    short drw_w, short drw_h
){
    R128InfoPtr info = R128PTR(pScrn);
    unsigned char *R128MMIO = info->MMIO;
    R128PortPrivPtr pPriv = info->adaptor->pPortPrivates[0].ptr;
    int v_inc, h_inc, step_by, tmp;
    int p1_h_accum_init, p23_h_accum_init;
    int p1_v_accum_init;

    R128ECP(pScrn, pPriv);

    v_inc = (src_h << 20) / drw_h;
    h_inc = (src_w << (12 + pPriv->ecp_div)) / drw_w;
    step_by = 1;

    while(h_inc >= (2 << 12)) {
	step_by++;
	h_inc >>= 1;
    }

    /* keep everything in 16.16 */

    offset += ((left >> 16) & ~7) << 1;

    tmp = (left & 0x0003ffff) + 0x00028000 + (h_inc << 3);
    p1_h_accum_init = ((tmp <<  4) & 0x000f8000) |
		      ((tmp << 12) & 0xf0000000);

    tmp = ((left >> 1) & 0x0001ffff) + 0x00028000 + (h_inc << 2);
    p23_h_accum_init = ((tmp <<  4) & 0x000f8000) |
		       ((tmp << 12) & 0x70000000);

    tmp = (top & 0x0000ffff) + 0x00018000;
    p1_v_accum_init = ((tmp << 4) & 0x03ff8000) | 0x00000001;

    left = (left >> 16) & 7;

    OUTREG(R128_OV0_REG_LOAD_CNTL, 1);
    while(!(INREG(R128_OV0_REG_LOAD_CNTL) & (1 << 3)));

    OUTREG(R128_OV0_H_INC, h_inc | ((h_inc >> 1) << 16));
    OUTREG(R128_OV0_STEP_BY, step_by | (step_by << 8));
    OUTREG(R128_OV0_Y_X_START, dstBox->x1 | (dstBox->y1 << 16));
    OUTREG(R128_OV0_Y_X_END,   dstBox->x2 | (dstBox->y2 << 16));
    OUTREG(R128_OV0_V_INC, v_inc);
    OUTREG(R128_OV0_P1_BLANK_LINES_AT_TOP, 0x00000fff | ((src_h - 1) << 16));
    OUTREG(R128_OV0_VID_BUF_PITCH0_VALUE, pitch);
    OUTREG(R128_OV0_P1_X_START_END, (width - 1) | (left << 16));
    left >>= 1; width >>= 1;
    OUTREG(R128_OV0_P2_X_START_END, (width - 1) | (left << 16));
    OUTREG(R128_OV0_P3_X_START_END, (width - 1) | (left << 16));
    OUTREG(R128_OV0_VID_BUF0_BASE_ADRS, offset & 0xfffffff0);
    OUTREG(R128_OV0_P1_V_ACCUM_INIT, p1_v_accum_init);
    OUTREG(R128_OV0_P23_V_ACCUM_INIT, 0);
    OUTREG(R128_OV0_P1_H_ACCUM_INIT, p1_h_accum_init);
    OUTREG(R128_OV0_P23_H_ACCUM_INIT, p23_h_accum_init);

    if(id == FOURCC_UYVY)
       OUTREG(R128_OV0_SCALE_CNTL, 0x41FF8C03);
    else
       OUTREG(R128_OV0_SCALE_CNTL, 0x41FF8B03);

    OUTREG(R128_OV0_REG_LOAD_CNTL, 0);
}

static void
R128DisplayVideo420(
    ScrnInfoPtr pScrn,
    short width, short height,
    int pitch,
    int offset1, int offset2, int offset3,
    int left, int right, int top,
    BoxPtr dstBox,
    short src_w, short src_h,
    short drw_w, short drw_h
){
    R128InfoPtr info = R128PTR(pScrn);
    unsigned char *R128MMIO = info->MMIO;
    R128PortPrivPtr pPriv = info->adaptor->pPortPrivates[0].ptr;
    int v_inc, h_inc, step_by, tmp, leftUV;
    int p1_h_accum_init, p23_h_accum_init;
    int p1_v_accum_init, p23_v_accum_init;

    v_inc = (src_h << 20) / drw_h;
    h_inc = (src_w << (12 + pPriv->ecp_div)) / drw_w;
    step_by = 1;

    while(h_inc >= (2 << 12)) {
	step_by++;
	h_inc >>= 1;
    }

    /* keep everything in 16.16 */

    offset1 += (left >> 16) & ~15;
    offset2 += (left >> 17) & ~15;
    offset3 += (left >> 17) & ~15;

    tmp = (left & 0x0003ffff) + 0x00028000 + (h_inc << 3);
    p1_h_accum_init = ((tmp <<  4) & 0x000f8000) |
		      ((tmp << 12) & 0xf0000000);

    tmp = ((left >> 1) & 0x0001ffff) + 0x00028000 + (h_inc << 2);
    p23_h_accum_init = ((tmp <<  4) & 0x000f8000) |
		       ((tmp << 12) & 0x70000000);

    tmp = (top & 0x0000ffff) + 0x00018000;
    p1_v_accum_init = ((tmp << 4) & 0x03ff8000) | 0x00000001;

    tmp = ((top >> 1) & 0x0000ffff) + 0x00018000;
    p23_v_accum_init = ((tmp << 4) & 0x01ff8000) | 0x00000001;

    leftUV = (left >> 17) & 15;
    left = (left >> 16) & 15;

    OUTREG(R128_OV0_REG_LOAD_CNTL, 1);
    while(!(INREG(R128_OV0_REG_LOAD_CNTL) & (1 << 3)));

    OUTREG(R128_OV0_H_INC, h_inc | ((h_inc >> 1) << 16));
    OUTREG(R128_OV0_STEP_BY, step_by | (step_by << 8));
    OUTREG(R128_OV0_Y_X_START, dstBox->x1 | (dstBox->y1 << 16));
    OUTREG(R128_OV0_Y_X_END,   dstBox->x2 | (dstBox->y2 << 16));
    OUTREG(R128_OV0_V_INC, v_inc);
    OUTREG(R128_OV0_P1_BLANK_LINES_AT_TOP, 0x00000fff | ((src_h - 1) << 16));
    src_h = (src_h + 1) >> 1;
    OUTREG(R128_OV0_P23_BLANK_LINES_AT_TOP, 0x000007ff | ((src_h - 1) << 16));
    OUTREG(R128_OV0_VID_BUF_PITCH0_VALUE, pitch);
    OUTREG(R128_OV0_VID_BUF_PITCH1_VALUE, pitch >> 1);
    OUTREG(R128_OV0_P1_X_START_END, (width - 1) | (left << 16));
    width >>= 1;
    OUTREG(R128_OV0_P2_X_START_END, (width - 1) | (leftUV << 16));
    OUTREG(R128_OV0_P3_X_START_END, (width - 1) | (leftUV << 16));
    OUTREG(R128_OV0_VID_BUF0_BASE_ADRS, offset1 & 0xfffffff0);
    OUTREG(R128_OV0_VID_BUF1_BASE_ADRS, (offset2 & 0xfffffff0) | 0x00000001);
    OUTREG(R128_OV0_VID_BUF2_BASE_ADRS, (offset3 & 0xfffffff0) | 0x00000001);
    OUTREG(R128_OV0_P1_V_ACCUM_INIT, p1_v_accum_init);
    OUTREG(R128_OV0_P23_V_ACCUM_INIT, p23_v_accum_init);
    OUTREG(R128_OV0_P1_H_ACCUM_INIT, p1_h_accum_init);
    OUTREG(R128_OV0_P23_H_ACCUM_INIT, p23_h_accum_init);
    OUTREG(R128_OV0_SCALE_CNTL, 0x41FF8A03);

    OUTREG(R128_OV0_REG_LOAD_CNTL, 0);
}



static int
R128PutImage(
  ScrnInfoPtr pScrn,
  short src_x, short src_y,
  short drw_x, short drw_y,
  short src_w, short src_h,
  short drw_w, short drw_h,
  int id, unsigned char* buf,
  short width, short height,
  Bool Sync,
  RegionPtr clipBoxes, pointer data
){
   R128InfoPtr info = R128PTR(pScrn);
   R128PortPrivPtr pPriv = (R128PortPrivPtr)data;
   INT32 xa, xb, ya, yb;
   int new_size, offset, s1offset, s2offset, s3offset;
   int srcPitch, srcPitch2, dstPitch;
   int d1line, d2line, d3line, d1offset, d2offset, d3offset;
   int top, left, npixels, nlines, bpp;
   BoxRec dstBox;
   CARD32 tmp;
#if X_BYTE_ORDER == X_BIG_ENDIAN
   unsigned char *R128MMIO = info->MMIO;
   CARD32 config_cntl = INREG(R128_CONFIG_CNTL);

   /* We need to disable byte swapping, or the data gets mangled */
   OUTREG(R128_CONFIG_CNTL, config_cntl &
	  ~(APER_0_BIG_ENDIAN_16BPP_SWAP | APER_0_BIG_ENDIAN_32BPP_SWAP));
#endif

   /*
    * s1offset, s2offset, s3offset - byte offsets to the Y, U and V planes
    *                                of the source.
    *
    * d1offset, d2offset, d3offset - byte offsets to the Y, U and V planes
    *                                of the destination.
    *
    * offset - byte offset within the framebuffer to where the destination
    *          is stored.
    *
    * d1line, d2line, d3line - byte offsets within the destination to the
    *                          first displayed scanline in each plane.
    *
    */

   if(src_w > (drw_w << 4))
	drw_w = src_w >> 4;
   if(src_h > (drw_h << 4))
	drw_h = src_h >> 4;

   /* Clip */
   xa = src_x;
   xb = src_x + src_w;
   ya = src_y;
   yb = src_y + src_h;

   dstBox.x1 = drw_x;
   dstBox.x2 = drw_x + drw_w;
   dstBox.y1 = drw_y;
   dstBox.y2 = drw_y + drw_h;

   if(!xf86XVClipVideoHelper(&dstBox, &xa, &xb, &ya, &yb,
			     clipBoxes, width, height))
	return Success;

   dstBox.x1 -= pScrn->frameX0;
   dstBox.x2 -= pScrn->frameX0;
   dstBox.y1 -= pScrn->frameY0;
   dstBox.y2 -= pScrn->frameY0;

   bpp = pScrn->bitsPerPixel >> 3;

   switch(id) {
   case FOURCC_YV12:
   case FOURCC_I420:
	srcPitch = (width + 3) & ~3;
	srcPitch2 = ((width >> 1) + 3) & ~3;
	dstPitch = (width + 31) & ~31;  /* of luma */
	new_size = ((dstPitch * (height + (height >> 1))) + bpp - 1) / bpp;
	s1offset = 0;
	s2offset = srcPitch * height;
	s3offset = (srcPitch2 * (height >> 1)) + s2offset;
	break;
   case FOURCC_UYVY:
   case FOURCC_YUY2:
   default:
	srcPitch = width << 1;
	srcPitch2 = 0;
	dstPitch = ((width << 1) + 15) & ~15;
	new_size = ((dstPitch * height) + bpp - 1) / bpp;
	s1offset = 0;
	s2offset = 0;
	s3offset = 0;
	break;
   }

   if(!(pPriv->linear = R128AllocateMemory(pScrn, pPriv->linear,
		pPriv->doubleBuffer ? (new_size << 1) : new_size)))
   {
	return BadAlloc;
   }

   pPriv->currentBuffer ^= 1;

    /* copy data */
   top = ya >> 16;
   left = (xa >> 16) & ~1;
   npixels = ((((xb + 0xffff) >> 16) + 1) & ~1) - left;

   offset = pPriv->linear->offset * bpp;
   if(pPriv->doubleBuffer)
	offset += pPriv->currentBuffer * new_size * bpp;

   switch(id) {
    case FOURCC_YV12:
    case FOURCC_I420:
	d1line = top * dstPitch;
	d2line = (height * dstPitch) + ((top >> 1) * (dstPitch >> 1));
	d3line = d2line + ((height >> 1) * (dstPitch >> 1));

	top &= ~1;

	d1offset = (top * dstPitch) + left + offset;
	d2offset = d2line + (left >> 1) + offset;
	d3offset = d3line + (left >> 1) + offset;

	s1offset += (top * srcPitch) + left;
	tmp = ((top >> 1) * srcPitch2) + (left >> 1);
	s2offset += tmp;
	s3offset += tmp;
	if(id == FOURCC_YV12) {
	   tmp = s2offset;
	   s2offset = s3offset;
	   s3offset = tmp;
	}

	nlines = ((((yb + 0xffff) >> 16) + 1) & ~1) - top;
	R128CopyData420(info, buf + s1offset, buf + s2offset, buf + s3offset,
			info->FB+d1offset, info->FB+d2offset, info->FB+d3offset,
			srcPitch, srcPitch2, dstPitch, nlines, npixels);
	break;
    case FOURCC_UYVY:
    case FOURCC_YUY2:
    default:
	left <<= 1;
	d1line = top * dstPitch;
	d2line = 0;
	d3line = 0;
	d1offset = d1line + left + offset;
	d2offset = 0;
	d3offset = 0;
	s1offset += (top * srcPitch) + left;
	nlines = ((yb + 0xffff) >> 16) - top;
	R128CopyData422(info, buf + s1offset, info->FB + d1offset,
			srcPitch, dstPitch, nlines, npixels);
	break;
    }

#if X_BYTE_ORDER == X_BIG_ENDIAN
    /* restore byte swapping */
    OUTREG(R128_CONFIG_CNTL, config_cntl);
#endif

    /* update cliplist */
    if(!REGION_EQUAL(pScrn->pScreen, &pPriv->clip, clipBoxes)) {
	REGION_COPY(pScrn->pScreen, &pPriv->clip, clipBoxes);
	/* draw these */
	xf86XVFillKeyHelper(pScrn->pScreen, pPriv->colorKey, clipBoxes);
    }


    switch(id) {
     case FOURCC_YV12:
     case FOURCC_I420:
	R128DisplayVideo420(pScrn, width, height, dstPitch,
		     offset + d1line, offset + d2line, offset + d3line,
		     xa, xb, ya, &dstBox, src_w, src_h, drw_w, drw_h);
	break;
     case FOURCC_UYVY:
     case FOURCC_YUY2:
     default:
	R128DisplayVideo422(pScrn, id, offset + d1line, width, height, dstPitch,
		     xa, xb, ya, &dstBox, src_w, src_h, drw_w, drw_h);
	break;
    }

    pPriv->videoStatus = CLIENT_VIDEO_ON;

    info->VideoTimerCallback = R128VideoTimerCallback;

    return Success;
}


static int
R128QueryImageAttributes(
    ScrnInfoPtr pScrn,
    int id,
    unsigned short *w, unsigned short *h,
    int *pitches, int *offsets
){
    int size, tmp;

    if(*w > MAXWIDTH) *w = MAXWIDTH;
    if(*h > MAXHEIGHT) *h = MAXHEIGHT;

    *w = (*w + 1) & ~1;
    if(offsets) offsets[0] = 0;

    switch(id) {
    case FOURCC_YV12:
    case FOURCC_I420:
	*h = (*h + 1) & ~1;
	size = (*w + 3) & ~3;
	if(pitches) pitches[0] = size;
	size *= *h;
	if(offsets) offsets[1] = size;
	tmp = ((*w >> 1) + 3) & ~3;
	if(pitches) pitches[1] = pitches[2] = tmp;
	tmp *= (*h >> 1);
	size += tmp;
	if(offsets) offsets[2] = size;
	size += tmp;
	break;
    case FOURCC_UYVY:
    case FOURCC_YUY2:
    default:
	size = *w << 1;
	if(pitches) pitches[0] = size;
	size *= *h;
	break;
    }

    return size;
}

static void
R128VideoTimerCallback(ScrnInfoPtr pScrn, Time now)
{
    R128InfoPtr info = R128PTR(pScrn);
    R128PortPrivPtr pPriv = info->adaptor->pPortPrivates[0].ptr;

    if(pPriv->videoStatus & TIMER_MASK) {
	if(pPriv->videoStatus & OFF_TIMER) {
	    if(pPriv->offTime < now) {
		unsigned char *R128MMIO = info->MMIO;
		OUTREG(R128_OV0_SCALE_CNTL, 0);
		pPriv->videoStatus = FREE_TIMER;
		pPriv->freeTime = now + FREE_DELAY;
	    }
	} else {  /* FREE_TIMER */
	    if(pPriv->freeTime < now) {
		if(pPriv->linear) {
		   xf86FreeOffscreenLinear(pPriv->linear);
		   pPriv->linear = NULL;
		}
		pPriv->videoStatus = 0;
		info->VideoTimerCallback = NULL;
	    }
	}
    } else  /* shouldn't get here */
	info->VideoTimerCallback = NULL;
}