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Rev 1547 Rev 1555
Line 54... Line 54...
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        *num += **data - '0';
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        *num += **data - '0';
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        (*data)++;
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        (*data)++;
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    }
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    }
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}
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}
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int ppm_get_data(unsigned char *data, size_t dtsz, int *width, int *height)
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{
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    /* Read magic */
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    if (data[0] != 'P' || data[1] != '6')
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        return EINVAL;
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    data+=2;
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    skip_whitespace(&data);
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    read_num(&data, width);
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    skip_whitespace(&data);
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    read_num(&data,height);
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    return 0;
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}
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/** Draw PPM pixmap
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/** Draw PPM pixmap
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 *
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 *
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 * @param data Pointer to PPM data
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 * @param data Pointer to PPM data
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 * @param datasz Maximum data size
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 * @param datasz Maximum data size
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 * @param x Coordinate of upper left corner
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 * @param x Coordinate of upper left corner
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 * @param y Coordinate of upper left corner
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 * @param y Coordinate of upper left corner
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 * @param maxwidth Maximum allowed width for picture
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 * @param maxwidth Maximum allowed width for picture
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 * @param maxheight Maximum allowed height for picture
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 * @param maxheight Maximum allowed height for picture
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 * @param putpixel Putpixel function used to print bitmap
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 * @param putpixel Putpixel function used to print bitmap
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 */
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 */
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int draw_ppm(unsigned char *data, size_t datasz, unsigned int sx,
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int ppm_draw(unsigned char *data, size_t datasz, unsigned int sx,
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         unsigned int sy,
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         unsigned int sy,
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         unsigned int maxwidth, unsigned int maxheight,
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         unsigned int maxwidth, unsigned int maxheight,
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         void (*putpixel)(int,unsigned int, unsigned int, int),int vp)
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         void (*putpixel)(int,unsigned int, unsigned int, int),int vp)
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{
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{
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    unsigned int width, height;
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    unsigned int width, height;
Line 102... Line 117...
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        /* Crop picture if we don't fit into region */
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        /* Crop picture if we don't fit into region */
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        if (i % width > maxwidth || i/width > maxheight) {
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        if (i % width > maxwidth || i/width > maxheight) {
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            data += 3;
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            data += 3;
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            continue;
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            continue;
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        }
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        }
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        color = ((data[0]*coef) << 16) + ((data[1]*coef) << 8) + data[0]*coef;
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        color = ((data[0]*coef) << 16) + ((data[1]*coef) << 8) + data[2]*coef;
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        (*putpixel)(vp, sx+(i % width), sy+(i / width), color);
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        (*putpixel)(vp, sx+(i % width), sy+(i / width), color);
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        data += 3;
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        data += 3;
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    }
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    }
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}
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}