source: titan/titan/fb.h @ 15297

#ifndef FB_H
#define FB_H

struct fb* getfb(char *name)
{
        debug(1000, "in");
        struct fb *node = fb;

        while(node != NULL)
        {
                if(strstr(node->name, name) != NULL)
                {
                        debug(1000, "out");
                        return node;
                }

                node = node->next;
        }
        debug(100, "framebuffer not found (%s)", name);
        return NULL;
}

long getfbsize(int dev)
{
        debug(1000, "in");
        struct fb* node = fb;
        unsigned long fbmemcount = 0;
        struct fb_fix_screeninfo fix_screeninfo;

        if(fb == NULL)
        {
                debug(1000, "out -> NULL dedect");
                return 0;
        }

#ifndef NOFB
        if(ioctl(fb->fd, FBIOGET_FSCREENINFO, &fix_screeninfo) == -1)
        {
                perr("ioctl FBIOGET_FSCREENINFO failed");
                return 0;
        }
#else
        fix_screeninfo.smem_len = 16*1024*1024;
#endif

        while(node != NULL)
        {
                if(node->dev == dev)
                        fbmemcount = fbmemcount + node->varfbsize;
                node = node->next;
        }

        debug(1000, "out");
        return fix_screeninfo.smem_len - fbmemcount;
}

struct fb* addfb(char *fbname, int dev, int width, int height, int colbytes, int fd, unsigned char* mmapfb, unsigned long fixfbsize)
{
        debug(1000, "in");
        struct fb *newnode = NULL, *node = fb;
        char *name = NULL;
        long ret = 0;

        name = ostrcat(fbname, "", 0, 0);
        if(name == NULL)
        {
                err("no memory");
                return NULL;
        }

        newnode = (struct fb*)malloc(sizeof(struct fb));        
        if(newnode == NULL)
        {
                err("no memory");
                free(name);
                return NULL;
        }

        memset(newnode, 0, sizeof(struct fb));
        newnode->name = name;
        newnode->dev = dev;
        newnode->width = width;
        newnode->height = height;
        newnode->colbytes = colbytes;
        newnode->pitch = newnode->width * newnode->colbytes;
        newnode->fb = mmapfb;
        newnode->fblong = (unsigned long*)newnode->fb;
        newnode->fd = fd;
        newnode->fixfbsize = fixfbsize;
        
        if(ostrcmp(name, FB) == 0)
                setfbvarsize(newnode);
        else if(ostrcmp(name, FB1) == 0)
                newnode->varfbsize = 720 * 576 * newnode->colbytes;
        else
                newnode->varfbsize = width * height * newnode->colbytes;

        /*eigener Buffer zB fuer LCD*/
        if(dev == 999)
                return newnode; 
        
        if(node != NULL)
        {
                while(node->next != NULL)
                        node = node->next;
                node->next = newnode;
        }
        else
                fb = newnode;

        ret = getfbsize(dev);
        if(ret < 0)
        {
                err("framebuffermem (%s) to small, needed = %ld", name, ret * -1);
                free(newnode);
                if(newnode == fb) fb = NULL;
                return NULL;
        }

        debug(100, "fbname=%s, fbwidth=%d, fbheight=%d, fbcol=%d, fbsize=%ld", newnode->name, newnode->width, newnode->height, newnode->colbytes, newnode->varfbsize);
        debug(1000, "out");
        return newnode;
}

void fb2png_thread()
{
        while (writeFBfile.buf1 != NULL || writeFBfile.buf2 != NULL) {
                if(writeFBfile.buf1 != NULL) {
                        writeFBfile.ActBuf = writeFBfile.buf1;
                        fb2png(writeFBfile.buf1, 320, 240, "/tmp/titanlcd.png");
                        free(writeFBfile.buf1); writeFBfile.buf1 = NULL;
                        if(writeFBfile.buf2 != NULL)
                                usleep(500000);
                }
                if(writeFBfile.buf2 != NULL) {
                        writeFBfile.ActBuf = writeFBfile.buf2;
                        fb2png(writeFBfile.buf2, 320, 240, "/tmp/titanlcd.png");
                        free(writeFBfile.buf2); writeFBfile.buf2 = NULL;
                        if(writeFBfile.buf1 != NULL)
                                usleep(500000);
                }
        }
        writeFBfile.ActBuf = NULL;
}

void delfb(char *name)
{
        debug(1000, "in");
        struct fb *node = fb, *prev = fb;

        while(node != NULL)
        {
                if(ostrcmp(node->name, name) == 0)
                {
                        if(node == fb)
                                fb = node->next;
                        else
                                prev->next = node->next;

                        free(node->name);
                        node->name = NULL;

                        free(node);
                        node = NULL;
                        break;
                }

                prev = node;
                node = node->next;
        }
        debug(1000, "out");
}

void freefb()
{
        debug(1000, "in");
        struct fb *node = fb, *prev = fb;

        while(node != NULL)
        {
                prev = node;
                node = node->next;
                if(prev != NULL)
                        delfb(prev->name);
        }
        debug(1000, "out");
}

struct fb* openfb(char *fbdev, int devnr)
{
        debug(1000, "in");
        int fd = -1;
        unsigned char *mmapfb = NULL;
        struct fb_var_screeninfo var_screeninfo;
        struct fb_fix_screeninfo fix_screeninfo;
        struct fb* node = NULL;

        if(fbdev == NULL)
        {
                err("failed to find fbdev in config file");
                return NULL;
        }

#ifndef NOFB
        fd = open(fbdev, O_RDWR);
        if(fd == -1)
        {
                perr("failed to open %s", fbdev);
                return NULL;
        }
        closeonexec(fd);

        if(ioctl(fd, FBIOGET_VSCREENINFO, &var_screeninfo) == -1)
        {
                perr("ioctl FBIOGET_VSCREENINFO failed");
                close(fd);
                return NULL;
        }

        if(ioctl(fd, FBIOGET_FSCREENINFO, &fix_screeninfo) == -1)
        {
                perr("ioctl FBIOGET_FSCREENINFO failed");
                close(fd);
                return NULL;
        }

        if(!(mmapfb = (unsigned char*)mmap(0, fix_screeninfo.smem_len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0)))
        {
                perr("mmap framebuffer");
                close(fd);
                return NULL;
        }

        if(devnr == 0)
                node = addfb(FB, devnr, var_screeninfo.xres, var_screeninfo.yres, var_screeninfo.bits_per_pixel / 8, fd, mmapfb, fix_screeninfo.smem_len);
        if(devnr == 1)
                node = addfb(FB1, devnr, var_screeninfo.xres, var_screeninfo.yres, var_screeninfo.bits_per_pixel / 8, fd, mmapfb, fix_screeninfo.smem_len);

#else

        mmapfb = malloc(16 * 1024 * 1024);
        if(devnr == 0)
                node = addfb(FB, devnr, getconfigint("skinfbwidth", NULL), getconfigint("skinfbheight", NULL), 4, -1, mmapfb, 16*1024*1024);
        if(devnr == 1)
                node = addfb(FB1, devnr, getconfigint("skinfbwidth", NULL), getconfigint("skinfbheight", NULL), 4, -1, mmapfb, 16*1024*1024);

#endif

        debug(1000, "out");
        return node;
}

void closefb()
{
        if(fb != NULL)
        {
                if(fb->fb != NULL)
                        munmap(fb->fb, fb->fixfbsize);
                if(fb->fd != -1)
                        close(fb->fd);
#ifdef NOFB
        free(fb->fb);
#endif
        }
}

void clearfball()
{
        if(fb->fb != NULL)
                memset(fb->fb, 0, fb->fixfbsize);
}

void clearfb(struct fb *node)
{
        if(node != NULL)
                memset(node->fb, 0, node->varfbsize);
}

void blitfb(int flag)
{
        blitfb2(skinfb, flag);
}

void changefbresolution(char *value)
{
        if(ostrcmp("pal", value) == 0)
        {
                fb->width = 720;
                fb->height = 576;
                fb->pitch = fb->width * fb->colbytes;
        }
        else if(ostrncmp("576", value, 3) == 0)
        {
                fb->width = 720;
                fb->height = 576;
                fb->pitch = fb->width * fb->colbytes;
        }
        else if(ostrncmp("720", value, 3) == 0)
        {
                fb->width = 1280;
                fb->height = 720;
                fb->pitch = fb->width * fb->colbytes;
        }
        else if(ostrncmp("1080", value, 4) == 0)
        {
                fb->width = 1920;
                fb->height = 1080;
                fb->pitch = fb->width * fb->colbytes;
        }
        if(skinfb == fb)
        {
                skin->width = skinfb->width;
                skin->height = skinfb->height;
                skin->iwidth = skinfb->width;
                skin->iheight = skinfb->height;
                skin->rwidth = skinfb->width;
                skin->rheight = skinfb->height;
        }
        clearfb(fb);
        clearfb(skinfb);
}

static void write_PNG(unsigned char *outbuffer, char *filename, 
                                int width, int height, int interlace)
{
        int i;
        int bit_depth=0, color_type;
        png_bytep row_pointers[height];
        png_structp png_ptr;
        png_infop info_ptr;
        FILE *outfile = fopen(filename, "wb");

        for (i=0; i<height; i++)
                row_pointers[i] = outbuffer + i * 4 * width;
                
        if (!outfile)
        {
                fprintf (stderr, "Error: Couldn't fopen %s.\n", filename);
                exit(EXIT_FAILURE);
        }
    
        png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, 
        (png_voidp) NULL, (png_error_ptr) NULL, (png_error_ptr) NULL);
    
        if (!png_ptr)
                err("Error: Couldn't create PNG write struct.");
    
        info_ptr = png_create_info_struct(png_ptr);
        if (!info_ptr)
        {
                png_destroy_write_struct(&png_ptr, (png_infopp) NULL);
                err("Error: Couldn't create PNG info struct.");
        }
    
        png_init_io(png_ptr, outfile);
    
        png_set_compression_level(png_ptr, Z_BEST_COMPRESSION);
    
        bit_depth = 8;
        color_type = PNG_COLOR_TYPE_RGB_ALPHA;
        //color_type = PNG_COLOR_TYPE_RGB;
        png_set_invert_alpha(png_ptr);
        png_set_bgr(png_ptr);

        png_set_IHDR(png_ptr, info_ptr, width, height, 
        bit_depth, color_type, interlace, 
        PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
    
        png_write_info(png_ptr, info_ptr);
    
        printf ("Now writing PNG file\n");
    
        png_write_image(png_ptr, row_pointers);
    
        png_write_end(png_ptr, info_ptr);
        /* puh, done, now freeing memory... */
        png_destroy_write_struct(&png_ptr, &info_ptr);
    
        if (outfile != NULL)
                (void) fclose(outfile);
} 

static void convert_and_write(unsigned char *inbuffer, char *filename, 
                                int width, int height, int bits, int interlace)
{
        size_t bufsize = (size_t) width * height * 4;

        unsigned char *outbuffer = malloc(bufsize);

        if (outbuffer == NULL)
                err("Not enough memory");
        
        memset(outbuffer, 0, bufsize);
        write_PNG(inbuffer, filename, width, height, interlace);
        (void) free(outbuffer);
}

int fb2png(unsigned char *buf_p, int width, int height, char *outfile)
{
        int interlace = PNG_INTERLACE_ADAM7;
        int bitdepth = 32;
                
        size_t help = 0;
        while(help <= (width * height * 4))
        {
                buf_p[help+3] = 0x00;
                help = help + 4;
        }
                
        convert_and_write(buf_p, outfile, width, height, bitdepth, interlace);
   

    return 0;
}

void pngforlcd()
{
        fb2png(skinfb->fb, 320, 240, "/tmp/titanlcd.png");
        
/*      FILE *fd;
        fd=fopen("/tmp/titanlcd.raw", "w");
        int help = 0;
        int i = 0;
        while (i < 240) {
                fwrite(skinfb->fb+help,320*4,1,fd);
                help = help + (skinfb->width * 4);
                i++;
        }
        fclose(fd);*/
}

void write_FB_to_JPEG_file(unsigned char *inbuffer, int image_width, int image_height, char * filename, int quality)
{
        
                
        size_t helpb = 0;
        size_t help = 0;
        unsigned char *helpbuffer = malloc(image_width*image_height*3);
        
        //delete alpha byte
        while(help <= (image_width*image_height*4))
        {
                helpbuffer[helpb+0] = inbuffer[help+0];
                helpbuffer[helpb+1] = inbuffer[help+1];
                helpbuffer[helpb+2] = inbuffer[help+2];
                help = help + 4;
                helpb = helpb + 3;
        }
        
        JSAMPLE *image_buffer = helpbuffer;
        struct jpeg_compress_struct cinfo;
        struct jpeg_error_mgr jerr;
        FILE * outfile;
        
        JSAMPROW row_pointer[1];
        int row_stride;
        
        cinfo.err = jpeg_std_error(&jerr);
        jpeg_create_compress(&cinfo);
        if ((outfile = fopen(filename, "wb")) == NULL) {
                fprintf(stderr, "can't open %s\n", filename);
                exit(1);
        }
        jpeg_stdio_dest(&cinfo, outfile);
        cinfo.image_width = image_width;        /* image width and height, in pixels */
        cinfo.image_height = image_height;
        cinfo.input_components = 3;             /* # of color components per pixel */
        cinfo.in_color_space = JCS_RGB; 

        jpeg_set_defaults(&cinfo);
        jpeg_set_quality(&cinfo, quality, TRUE);

        jpeg_start_compress(&cinfo, TRUE);
        row_stride = image_width * 3;

        while (cinfo.next_scanline < cinfo.image_height) {
                row_pointer[0] = & image_buffer[cinfo.next_scanline * row_stride];
                (void) jpeg_write_scanlines(&cinfo, row_pointer, 1);
        }

        jpeg_finish_compress(&cinfo);
        fclose(outfile);
        jpeg_destroy_compress(&cinfo);
   
        free(helpbuffer);
}

#endif