76     struct jpeg_decompress_struct cinfo; /* JPEG decompression struct */  in readjpeg()  local
96     cinfo.err = jpeg_std_error(&jerr); /* Set JPEG error handler to default */  in readjpeg()
98     jpeg_create_decompress(&cinfo); /* Create decompression context */  in readjpeg()
99     jpeg_stdio_src(&cinfo, ifp); /* Set input mechanism to stdio type */  in readjpeg()
100     jpeg_read_header(&cinfo, TRUE); /* Read the JPEG header for info */  in readjpeg()
101     jpeg_start_decompress(&cinfo); /* Prepare for actual decompression */  in readjpeg()
103     *xres = cinfo.output_width; /* set returned image width */  in readjpeg()
104     *yres = cinfo.output_height; /* set returned image height */  in readjpeg()
107     row_stride = cinfo.output_width * cinfo.output_components;  in readjpeg()
110     *imgdata = (unsigned char *)malloc(row_stride * cinfo.output_height);  in readjpeg()
113     while (cinfo.output_scanline < cinfo.output_height) {  in readjpeg()
114         row_pointer[0] = &((*imgdata)[(cinfo.output_scanline) * row_stride]);  in readjpeg()
115         jpeg_read_scanlines(&cinfo, row_pointer, 1);  in readjpeg()
118     jpeg_finish_decompress(&cinfo); /* Tell the JPEG library to cleanup */  in readjpeg()
119     jpeg_destroy_decompress(&cinfo); /* Destroy JPEG decompression context */  in readjpeg()