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/**********************************************************************
*
* Copyright(c) 2008 Imagination Technologies Ltd. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful but, except
* as otherwise stated in writing, without any warranty; without even the
* implied warranty of merchantability or fitness for a particular purpose.
* See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
*
* The full GNU General Public License is included in this distribution in
* the file called "COPYING".
*
* Contact Information:
* Imagination Technologies Ltd. <gpl-support@imgtec.com>
* Home Park Estate, Kings Langley, Herts, WD4 8LZ, UK
*
******************************************************************************/
#include "bufferclass_example.h"
#include "bufferclass_example_private.h"
#define MIN(a, b) ((a) < (b) ? (a) : (b))
static void FillYUV420Image(void __iomem *pvDest, int width, int height,
int bytestride)
{
static int iPhase;
int i, j;
unsigned char u, v, y;
unsigned char *pui8y = (unsigned char __force *)pvDest;
unsigned short *pui16uv;
unsigned int count = 0;
for (j = 0; j < height; j++)
for (i = 0; i < width; i++) {
y = (((i + iPhase) >> 6) % (2) == 0) ? 0x7f : 0x00;
pui8y[count++] = y;
}
pui16uv = (unsigned short *)
((unsigned char __force *)pvDest + (width * height));
count = 0;
for (j = 0; j < height; j += 2)
for (i = 0; i < width; i += 2) {
u = (j < (height / 2)) ?
((i < (width / 2)) ? 0xFF : 0x33) :
((i < (width / 2)) ? 0x33 : 0xAA);
v = (j < (height / 2)) ?
((i < (width / 2)) ? 0xAC : 0x0) :
((i < (width / 2)) ? 0x03 : 0xEE);
pui16uv[count++] = (v << 8) | u;
}
iPhase++;
}
static void FillYUV422Image(void __iomem *pvDest, int width, int height,
int bytestride)
{
static int iPhase;
int x, y;
unsigned char u, v, y0, y1;
unsigned int *pui32yuv = (unsigned int __force *)pvDest;
unsigned int count = 0;
for (y = 0; y < height; y++)
for (x = 0; x < width; x += 2) {
u = (y < (height / 2)) ?
((x < (width / 2)) ? 0xFF : 0x33) :
((x < (width / 2)) ? 0x33 : 0xAA);
v = (y < (height / 2)) ?
((x < (width / 2)) ? 0xAA : 0x0) :
((x < (width / 2)) ? 0x03 : 0xEE);
y0 = y1 =
(((x + iPhase) >> 6) % (2) == 0) ? 0x7f : 0x00;
pui32yuv[count++] =
(y1 << 24) | (v << 16) | (y0 << 8) | u;
}
iPhase++;
}
static void FillRGB565Image(void __iomem *pvDest, int width, int height,
int bytestride)
{
int i, Count;
unsigned long *pui32Addr = (unsigned long __force *)pvDest;
unsigned short *pui16Addr = (unsigned short __force *)pvDest;
unsigned long Colour32;
unsigned short Colour16;
static unsigned char Colour8;
Colour16 = (Colour8 >> 3) | ((Colour8 >> 2) << 5) |
((Colour8 >> 3) << 11);
Colour32 = Colour16 | Colour16 << 16;
Count = (height * bytestride) >> 2;
for (i = 0; i < Count; i++)
pui32Addr[i] = Colour32;
Count = height;
pui16Addr = (unsigned short *)
((unsigned char __force *)pvDest + (2 * Colour8));
for (i = 0; i < Count; i++) {
*pui16Addr = 0xF800;
pui16Addr =
(unsigned short *)((unsigned char *)pui16Addr + bytestride);
}
Count = bytestride >> 2;
pui32Addr = (unsigned long *)((unsigned char __force *)pvDest +
(bytestride * (MIN(height - 1, 0xFF) - Colour8)));
for (i = 0; i < Count; i++)
pui32Addr[i] = 0x001F001F;
Colour8 = (Colour8 + 1) % MIN(height - 1, 0xFF);
}
int FillBuffer(unsigned int ui32BufferIndex)
{
struct BC_EXAMPLE_DEVINFO *psDevInfo = GetAnchorPtr();
struct BC_EXAMPLE_BUFFER *psBuffer;
struct BUFFER_INFO *psBufferInfo;
struct PVRSRV_SYNC_DATA *psSyncData;
if (psDevInfo == NULL)
return -1;
psBuffer = &psDevInfo->psSystemBuffer[ui32BufferIndex];
psBufferInfo = &psDevInfo->sBufferInfo;
psSyncData = psBuffer->psSyncData;
if (psSyncData) {
if (psSyncData->ui32ReadOpsPending !=
psSyncData->ui32ReadOpsComplete)
return -1;
psSyncData->ui32WriteOpsPending++;
}
switch (psBufferInfo->pixelformat) {
case PVRSRV_PIXEL_FORMAT_RGB565:
default:
FillRGB565Image(psBuffer->sCPUVAddr, BC_EXAMPLE_WIDTH,
BC_EXAMPLE_HEIGHT, BC_EXAMPLE_STRIDE);
break;
case PVRSRV_PIXEL_FORMAT_FOURCC_ORG_UYVY:
FillYUV422Image(psBuffer->sCPUVAddr, BC_EXAMPLE_WIDTH,
BC_EXAMPLE_HEIGHT, BC_EXAMPLE_STRIDE);
break;
case PVRSRV_PIXEL_FORMAT_NV12:
FillYUV420Image(psBuffer->sCPUVAddr, BC_EXAMPLE_WIDTH,
BC_EXAMPLE_HEIGHT, BC_EXAMPLE_STRIDE);
break;
}
if (psSyncData)
psSyncData->ui32WriteOpsComplete++;
return 0;
}
int GetBufferCount(unsigned int *pui32BufferCount)
{
struct BC_EXAMPLE_DEVINFO *psDevInfo = GetAnchorPtr();
if (psDevInfo == NULL)
return -1;
*pui32BufferCount = psDevInfo->sBufferInfo.ui32BufferCount;
return 0;
}
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