When you utilize "Memory_contigAlloc()", you're building in a dependency
on a Codec Engine API. This API, when on Linux, simply wraps the CMEM
APIs.
Because 1) this app may not care about cross-OS compatibility, and 2)
you want to minimize dependencies - always a good goal, you may want to
just use the CMEM API (rather than the CE APIs). There are Codec Engine
independent CMEM example apps in the DVEVM's
cmem_1_??/packages/ti/sdo/linuxutils/cmem/apps/* directory.
[ However, if this app _will_ become Codec Engine dependent, you may
want to continue using Memory_* APIs, and set up the build environment,
configuration, etc. You can see the examples in
codec_engine_1_??/examples/* to see how to do that. ]
Also, don't forget to Memory_contigFree(). ;)
Chris
________________________________
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
Behalf Of Harrison
Sent: Monday, February 05, 2007 1:19 AM
To: davinci-linux-open-source
Subject: how to compile a user space code below ?
Memory_contigAlloc() usedin it >.
anyone can provide a makefile or the approach for compiling it ?
it seems that XDC tools should been considered .... any help
will be appreciated ! thanks
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/time.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include <sched.h>
#include <pthread.h>
#include <asm/types.h>
#include <linux/fb.h>
#include <xdc/std.h>
#include <ti/sdo/ce/Engine.h>
#include <ti/sdo/ce/osal/Memory.h>
#include <ti/sdo/ce/CERuntime.h>
#define D1_WIDTH 360
#define D1_HEIGHT 240
#define SCREEN_BPP 16
#define D1_FRAME_SIZE D1_WIDTH*SCREEN_BPP/8
#define READBUFSIZE D1_FRAME_SIZE*D1_HEIGHT
#define FAILURE -1
#define SUCCESS 0
#define UYVY_BLACK 0x10801080
struct Zoom_Params
{
unsigned int WindowID;
unsigned int Zoom_H;
unsigned int Zoom_V;
};
#define RESIZER_MAGIC 'N'
#define SET_INPUT_ADDR _IOW(RESIZER_MAGIC,1,int)
#define SET_OUTPUT_ADDR _IOW(RESIZER_MAGIC,2,int)
#define PROCESS_ONE_FRAME _IOW(RESIZER_MAGIC,3,int)
#define FBIO_SETZOOM _IOW('F', 0x24, struct Zoom_Params)
#define FBIO_WAITFORVSYNC _IOW('F', 0x20, unsigned int)
#define FBIO_GETSTD _IOR('F', 0x25, unsigned int)
#define DEBUG(fmt,args...) printf(fmt,##args)
static int initDisplayDevice(char *display[])
{
struct fb_var_screeninfo varInfo;
struct Zoom_Params zoom;
unsigned int *buf;
int fb;
int i;
int std;
fb = open("/dev/fb/3",O_RDWR);
if (fb == -1) {
DEBUG("open file error \n");
return FAILURE;
}
if (ioctl(fb, FBIO_GETSTD, &std) == -1) {
DEBUG("Failed to get video standard from display device
driver\n");
return FAILURE;
}
if ((std >> 16) == 0x1) {
DEBUG("NTSC selected\n");
}else {
DEBUG("PAL selected\n");
}
if (ioctl(fb, FBIOGET_VSCREENINFO, &varInfo) == -1) {
DEBUG("Failed FBIOGET_VSCREENINFO \n");
return FAILURE;
}
varInfo.xres = D1_WIDTH;
varInfo.yres = D1_HEIGHT;
varInfo.bits_per_pixel = SCREEN_BPP;
if (ioctl(fb, FBIOPUT_VSCREENINFO, &varInfo) == -1) {
DEBUG("Failed FBIOPUT_VSCREENINFO \n");
return FAILURE;
}
if (varInfo.xres != D1_WIDTH ||
varInfo.yres != D1_HEIGHT ||
varInfo.bits_per_pixel != SCREEN_BPP) {
DEBUG("Failed to get the requested screen size: %dx%d at
%d bpp\n",D1_WIDTH,D1_HEIGHT, SCREEN_BPP);
return FAILURE;
}
display[0] = (char *) mmap (NULL,D1_FRAME_SIZE,PROT_READ |
PROT_WRITE,MAP_SHARED,fb,0);
buf = (unsigned int *) display[0];
for (i=0; i<D1_FRAME_SIZE / sizeof(unsigned int); i++) {
buf[i] = UYVY_BLACK;
}
zoom.WindowID = 1; //VID1_INDEX
zoom.Zoom_H = 0; //ZOOM_1X
zoom.Zoom_V = 0; //ZOOM_1X
if (ioctl(fb, FBIO_SETZOOM, &zoom)) {
DEBUG("Failed setting zoom parameters\n");
return FAILURE;
}
return fb;
}
int main(){
int resizer,fb,pic,numBytes;
char * readBuf;
char *display[1];
resizer = open("/dev/resizer", O_RDWR);
if (resizer == -1) {
DEBUG("open file error \n");
return FAILURE;
}
fb = initDisplayDevice(display);
DEBUG("init display device is ok! \n");
if(fb==FAILURE){
close(resizer);
return FAILURE;
}
pic = open("/pic", O_RDWR);
if (pic == -1) {
DEBUG("open file error \n");
return FAILURE;
}
DEBUG("open picture ok! \n");
readBuf=(char
*)Memory_contigAlloc(READBUFSIZE,Memory_DEFAULTALIGNMENT);
if(readBuf == NULL){
DEBUG("fail to allocate contilsguous memory block.\n");
goto fail;
}
DEBUG("READ PIC\n");
numBytes = read(pic,readBuf,READBUFSIZE);
if(numBytes != READBUFSIZE){
DEBUG("fail to read the whole pic.\n");
return FAILURE;
}
DEBUG("SET_INPUT_ADDR\n");
if(ioctl(resizer,SET_INPUT_ADDR,(Memory_getPhysicalAddress(readBuf))) ==
-1){
DEBUG("set input addr error.\n");
return FAILURE;
}
DEBUG("SET_OUTPUT_ADDR\n");
if(ioctl(resizer,SET_OUTPUT_ADDR,(Memory_getPhysicalAddress(display[0]))
) == -1){
DEBUG("set input addr error.\n");
return FAILURE;
}
DEBUG("PROCESS_ONE_FRAME\n");
if(ioctl(resizer,PROCESS_ONE_FRAME,0x00000001) == -1){
DEBUG("set input addr error.\n");
return FAILURE;
}
fail:
close(resizer);
close(fb);
close(pic);
return 0;
}
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