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Hello ! I am trying to display an image on TMS320C6711 processor.I am not able to display the image properly. Infact I am getting sometimes three images of input image or I am getting some small portion of the input image. The code I am trying out is #include<stdio.h> typedef struct { unsigned char signature[2]; long filesize; long reserved; long dataoffset; }filehead; typedef struct { long header_size; long width; long height; unsigned planes; unsigned bitcount; long compression; long imagesize; long hres; long vres; long color_used; long imp_color; }infohead; void main() { long rows; long cols; filehead fileh; infohead infoh; int i,j; unsigned char *r,*g,*b; int cnt=0,*Out; unsigned char pixel; FILE *fp; fp=fopen("c:\\baby3.bmp","rb"); fread(&fileh.signature,2,1,fp); fread(&fileh.filesize,4,1,fp); fread(&fileh.reserved,4,1,fp); fread(&fileh.dataoffset,4,1,fp); fread(&infoh.header_size,4,1,fp); fread(&infoh.width,4,1,fp); fread(&infoh.height,4,1,fp); fread(&infoh.planes,2,1,fp); fread(&infoh.bitcount,2,1,fp); fread(&infoh.compression,4,1,fp); fread(&infoh.imagesize,4,1,fp); fread(&infoh.hres,4,1,fp); fread(&infoh.vres,4,1,fp); fread(&infoh.color_used,4,1,fp); fread(&infoh.imp_color,4,1,fp); fseek(fp,fileh.dataoffset,0); rows=infoh.height; cols=infoh.width; cnt=cols%4; printf("\n filesize=%d",fileh.filesize); printf("\n dataoffset=%d",fileh.dataoffset); printf("\n header_size=%d",infoh.header_size); printf("\n cols=%d",infoh.width); printf("\n rows=%d",infoh.height); printf("\n imagesize=%d",infoh.imagesize); printf("\n color_used=%d",infoh.color_used); printf("\n imp_color=%d",infoh.imp_color); r=(unsigned char *)malloc(rows*cols); g=(unsigned char *)malloc(rows*cols); b=(unsigned char *)malloc(rows*cols); Out=(int *)malloc(rows*cols); for(i=rows-1;i>=0;i--) { for(j=cols-1;j>=0;j--) { pixel=getc(fp); r[i*cols+j]=(unsigned char)pixel; g[i*cols+j]=(unsigned char)pixel; b[i*cols+j]=(unsigned char)pixel; } } } |
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Display of bmp image on TMS320C6711
Started by ●November 3, 2004
Reply by ●November 3, 20042004-11-03
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long is 40-bits on C6x. Rather use int-32 bits. If you truly need the 40-bit use %ld when printing to a file. Regds JS >er_narin wrote: > > Hello ! I am trying to display an image on TMS320C6711 processor.I am > not able to display the image properly. Infact I am getting sometimes > three images of input image or I am getting some small portion of the > input image. The code I am trying out is > > #include<stdio.h> > > typedef struct > { > unsigned char signature[2]; > long filesize; > long reserved; > long dataoffset; > }filehead; > > typedef struct > { > long header_size; > long width; > long height; > unsigned planes; > unsigned bitcount; > long compression; > long imagesize; > long hres; > long vres; > long color_used; > long imp_color; > }infohead; > > void main() > { > > long rows; > long cols; > filehead fileh; > infohead infoh; > int i,j; > unsigned char *r,*g,*b; > int cnt=0,*Out; > unsigned char pixel; > FILE *fp; > fp=fopen("c:\\baby3.bmp","rb"); > fread(&fileh.signature,2,1,fp); > fread(&fileh.filesize,4,1,fp); > fread(&fileh.reserved,4,1,fp); > fread(&fileh.dataoffset,4,1,fp); > > fread(&infoh.header_size,4,1,fp); > fread(&infoh.width,4,1,fp); > fread(&infoh.height,4,1,fp); > fread(&infoh.planes,2,1,fp); > fread(&infoh.bitcount,2,1,fp); > fread(&infoh.compression,4,1,fp); > fread(&infoh.imagesize,4,1,fp); > fread(&infoh.hres,4,1,fp); > fread(&infoh.vres,4,1,fp); > fread(&infoh.color_used,4,1,fp); > fread(&infoh.imp_color,4,1,fp); > fseek(fp,fileh.dataoffset,0); > rows=infoh.height; > cols=infoh.width; > > cnt=cols%4; > printf("\n filesize=%d",fileh.filesize); > printf("\n dataoffset=%d",fileh.dataoffset); > printf("\n header_size=%d",infoh.header_size); > printf("\n cols=%d",infoh.width); > printf("\n rows=%d",infoh.height); > printf("\n imagesize=%d",infoh.imagesize); > printf("\n color_used=%d",infoh.color_used); > printf("\n imp_color=%d",infoh.imp_color); > r=(unsigned char *)malloc(rows*cols); > g=(unsigned char *)malloc(rows*cols); > b=(unsigned char *)malloc(rows*cols); > Out=(int *)malloc(rows*cols); > > for(i=rows-1;i>=0;i--) > { > for(j=cols-1;j>=0;j--) > { > pixel=getc(fp); > r[i*cols+j]=(unsigned char)pixel; > g[i*cols+j]=(unsigned char)pixel; > b[i*cols+j]=(unsigned char)pixel; > > } > } > } > _____________________________________ > Note: If you do a simple "reply" with your email client, only the author of this message will receive your answer. You need to do a "reply all" if you want your answer to be distributed to the entire group. > > _____________________________________ > About this discussion group: > > To Join: Send an email to > > To Post: Send an email to > > To Leave: Send an email to > > Archives: http://www.yahoogroups.com/group/c6x > > Other Groups: http://www.dsprelated.com > > Yahoo! Groups Links > > |
Reply by ●November 3, 20042004-11-03
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Where do you want to display the image? You want to display it once to view it in CCS with view/graph/image? Or you want to output it continously? You open a file on your harddisk from the DSP? How is your PC connected to the DSP? I suppose its Jtag. Maybe the reason for troubles is the communication between PC and the DSP. Can you give us some more details about your hardware configuration? In case you are thinking about outputting your image to some output from the DSP directly: For example - in good old monochrome standard PAL, you have 768x576 Pixels, along with the blank lines maybe 64s to process one line to meet the real time targets. Maybe you want to have 50% idle time after reading in and outputting the image you have maybe 15s to process one line of maybe 900 Pixels (including blanks). In your loop you touch each and every pixel one by one. I doubt that this will be fast enough. In one of my projects I copy the data using EDMA to a Fifo (in a Xilinx-PLD), this takes about 8-10s for a line with 32Bit transfers including some overhead like checking linenumbers... bye, thomas > Hello ! I am trying to display an image on TMS320C6711 processor.I am > not able to display the image properly. Infact I am getting sometimes > three images of input image or I am getting some small portion of the > input image. The code I am trying out is > #include<stdio.h> > > typedef struct > { > unsigned char signature[2]; > long filesize; > long reserved; > long dataoffset; > }filehead; > > typedef struct > { > long header_size; > long width; > long height; > unsigned planes; > unsigned bitcount; > long compression; > long imagesize; > long hres; > long vres; > long color_used; > long imp_color; > }infohead; > > void main() > { > > long rows; > long cols; > filehead fileh; > infohead infoh; > int i,j; > unsigned char *r,*g,*b; > int cnt=0,*Out; > unsigned char pixel; > FILE *fp; > fp=fopen("c:\\baby3.bmp","rb"); > fread(&fileh.signature,2,1,fp); > fread(&fileh.filesize,4,1,fp); > fread(&fileh.reserved,4,1,fp); > fread(&fileh.dataoffset,4,1,fp); > fread(&infoh.header_size,4,1,fp); > fread(&infoh.width,4,1,fp); > fread(&infoh.height,4,1,fp); > fread(&infoh.planes,2,1,fp); > fread(&infoh.bitcount,2,1,fp); > fread(&infoh.compression,4,1,fp); > fread(&infoh.imagesize,4,1,fp); > fread(&infoh.hres,4,1,fp); > fread(&infoh.vres,4,1,fp); > fread(&infoh.color_used,4,1,fp); > fread(&infoh.imp_color,4,1,fp); > fseek(fp,fileh.dataoffset,0); > rows=infoh.height; > cols=infoh.width; > > cnt=cols%4; > printf("\n filesize=%d",fileh.filesize); > printf("\n dataoffset=%d",fileh.dataoffset); > printf("\n header_size=%d",infoh.header_size); > printf("\n cols=%d",infoh.width); > printf("\n rows=%d",infoh.height); > printf("\n imagesize=%d",infoh.imagesize); > printf("\n color_used=%d",infoh.color_used); > printf("\n imp_color=%d",infoh.imp_color); > r=(unsigned char *)malloc(rows*cols); > g=(unsigned char *)malloc(rows*cols); > b=(unsigned char *)malloc(rows*cols); > Out=(int *)malloc(rows*cols); > > for(i=rows-1;i>=0;i--) > { > for(j=cols-1;j>=0;j--) > { > pixel=getc(fp); > r[i*cols+j]=(unsigned char)pixel; > g[i*cols+j]=(unsigned char)pixel; > b[i*cols+j]=(unsigned char)pixel; > > } > } > } > > _____________________________________ > Note: If you do a simple "reply" with your email client, only the author > of this message will receive your answer. You need to do a "reply all" if > you want your answer to be distributed to the entire group. > > _____________________________________ > About this discussion group: > > To Join: Send an email to > > To Post: Send an email to > > To Leave: Send an email to > > Archives: http://www.yahoogroups.com/group/c6x > > Other Groups: http://www.dsprelated.com > > Yahoo! Groups Links > > -- NEU +++ DSL Komplett von GMX +++ http://www.gmx.net/de/go/dsl GMX DSL-Netzanschluss + Tarif zum supergstigen Komplett-Preis! |
Reply by ●November 4, 20042004-11-04
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Yes, I've seen your query in the Yahoo forum. I haven't a clear answer for that, but my suggestion is don't use the standard I/O library, because it assumes there is an easy path between the hard disk and the DSP, which isn't always true. In addition, I don't know what kind of board you are using (DSK, EVM, user defined). Instead, I would convert the image into a TI format, and load it using file->data->load in CCS or a GEL function. Hava a look at the help to see how's the TI format hex file defined. -----Mensaje original----- De: er_narin [mailto:] Enviado el: jueves, 04 de noviembre de 2004 4:50 Para: Asunto: Display of bmp image on TMS320C6711 Hello friend I am trying to read a bmp image from disk and want to display it with view option on CCS. My problem is I am not able to display the image properly. Can you send me some C code for the same. |
