} else {
next = pnmctx.bytestream - pnmctx.bytestream_start
+ av_image_get_buffer_size(avctx->pix_fmt, avctx->width, avctx->height, 1);
} else {
next = pnmctx.bytestream - pnmctx.bytestream_start
+ av_image_get_buffer_size(avctx->pix_fmt, avctx->width, avctx->height, 1);