108   int        cols;  member
124 #define secs(cols) \  argument
125   ((double)(cols) * p->step_size * p->block_steps / effp->in_signal.rate)
454   if (p->cols == p->x_size) {  in do_column()
457       lsx_report("PNG truncated at %g seconds", secs(p->cols));  in do_column()
461   ++p->cols;  in do_column()
462   p->dBfs = lsx_realloc(p->dBfs, p->cols * p->rows * sizeof(*p->dBfs));  in do_column()
467     p->dBfs[(p->cols - 1) * p->rows + i] = dBfs + p->gain;  in do_column()
549     lsx_debug("cols=%i left=%i end=%i", p->cols, p->read, p->end);  in drain()
558     lsx_debug("flushed cols=%i left=%i end=%i", p->cols, p->read, p->end);  in drain()
712 #define pixel(x,y) pixels[(y) * cols + (x)]
713 #define print_at(x,y,c,t) print_at_(pixels,cols,x,y,c,t,0)
714 #define print_up(x,y,c,t) print_at_(pixels,cols,x,y,c,t,1)
716 static void print_at_(png_byte *pixels, int cols, int x, int y, int c,  in print_at_()  argument
783   int         cols     = p->raw? p->cols : left + p->cols + between + spectrum_width + right;  in stop()  local
784   png_byte   *pixels   = lsx_malloc(cols * rows * sizeof(*pixels));  in stop()
817   memset(pixels, Background, cols * rows * sizeof(*pixels));  in stop()
821   png_set_IHDR(png, png_info, cols, rows, 8,  in stop()
826     png_rows[rows - 1 - j] = pixels + j * cols;  in stop()
841       for (i = p->rows * p->cols; i > 0; i--)  in stop()
848       for (i = 0; i < p->cols; ++i)  in stop()
852         pixel(left - 1, base + j) = pixel(left + p->cols, base + j) = Grid;  in stop()
856       for (i = -1; i <= p->cols; ++i)  in stop()
861     if (p->title && (i = strlen(p->title) * font_X) < cols + 1) /* Title */  in stop()
862       print_at((cols - i) / 2, rows - font_y, Text, p->title);  in stop()
864     if (strlen(p->comment) * font_X < cols + 1)     /* Footer comment */  in stop()
868     step = axis(secs(p->cols), p->cols / (font_X * 9 / 2), &limit, &prefix);  in stop()
870     print_at(left + (p->cols - font_X * strlen(text)) / 2, 24, Text, text);  in stop()
873       int x = limit ? (double)i / limit * p->cols + .5 : 0;  in stop()
902           pixel(left-1-x, base+y) = pixel(left+p->cols+x, base+y) = Grid;  in stop()
910         print_at(left + p->cols + 6, base + y + 5, Labels, text);  in stop()
917     print_at(cols - right - 2 - font_X, base - 13, Text, "dBFS");/* Axis label */  in stop()
921         pixel(cols - right - 1 - i, base + j) = b;  in stop()
929       print_at(cols - right + 1, base + y + 5, Labels, text);  in stop()